diff --git a/toolchain/gcc/Config.version b/toolchain/gcc/Config.version
index 808c0c2..5d393c5 100644
--- a/toolchain/gcc/Config.version
+++ b/toolchain/gcc/Config.version
@@ -6,7 +6,7 @@ config GCC_VERSION
 	string
 	default "4.8-linaro"    if GCC_VERSION_4_8_LINARO
 	default "arc-2015.06"   if GCC_VERSION_4_8_ARC
-	default "5.2.0"
+	default "5.3.0"
 
 config GCC_VERSION_4_8
 	bool
diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index 6ac5a46..e1580cf 100644
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -28,8 +28,8 @@ GCC_DIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_URL:=@GNU/gcc/gcc-$(PKG_VERSION)
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 
-ifeq ($(PKG_VERSION),5.2.0)
-  PKG_MD5SUM:=a51bcfeb3da7dd4c623e27207ed43467
+ifeq ($(PKG_VERSION),5.3.0)
+  PKG_MD5SUM:=c9616fd448f980259c31de613e575719
 endif
 
 ifneq ($(CONFIG_GCC_VERSION_4_8_ARC),)
diff --git a/toolchain/gcc/patches/5.2.0/001-revert_register_mode_search.patch b/toolchain/gcc/patches/5.2.0/001-revert_register_mode_search.patch
deleted file mode 100644
index 06373eb..0000000
--- a/toolchain/gcc/patches/5.2.0/001-revert_register_mode_search.patch
+++ /dev/null
@@ -1,65 +0,0 @@
-Revert of:
-
-commit 275035b56823b26d5fb7e90fad945b998648edf2
-Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date:   Thu Sep 5 14:09:07 2013 +0000
-
-        PR target/58139
-        * reginfo.c (choose_hard_reg_mode): Scan through all mode classes
-        looking for widest mode.
-
-
-    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
-
-
---- a/gcc/reginfo.c
-+++ b/gcc/reginfo.c
-@@ -665,35 +665,40 @@ choose_hard_reg_mode (unsigned int regno
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-+  if (found_mode != VOIDmode)
-+    return found_mode;
-+
-   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
-        mode != VOIDmode;
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-+  if (found_mode != VOIDmode)
-+    return found_mode;
-+
-   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
-        mode != VOIDmode;
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-+  if (found_mode != VOIDmode)
-+    return found_mode;
-+
-   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
-        mode != VOIDmode;
-        mode = GET_MODE_WIDER_MODE (mode))
-     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
- 	&& HARD_REGNO_MODE_OK (regno, mode)
--	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
--	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
-+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
-       found_mode = mode;
- 
-   if (found_mode != VOIDmode)
diff --git a/toolchain/gcc/patches/5.2.0/002-case_insensitive.patch b/toolchain/gcc/patches/5.2.0/002-case_insensitive.patch
deleted file mode 100644
index b3d2dbe..0000000
--- a/toolchain/gcc/patches/5.2.0/002-case_insensitive.patch
+++ /dev/null
@@ -1,14 +0,0 @@
---- a/include/filenames.h
-+++ b/include/filenames.h
-@@ -43,11 +43,6 @@ extern "C" {
- #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
- #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
- #else /* not DOSish */
--#  if defined(__APPLE__)
--#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
--#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
--#    endif
--#  endif /* __APPLE__ */
- #  define HAS_DRIVE_SPEC(f) (0)
- #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
- #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
diff --git a/toolchain/gcc/patches/5.2.0/010-documentation.patch b/toolchain/gcc/patches/5.2.0/010-documentation.patch
deleted file mode 100644
index 07064a9..0000000
--- a/toolchain/gcc/patches/5.2.0/010-documentation.patch
+++ /dev/null
@@ -1,23 +0,0 @@
---- a/gcc/Makefile.in
-+++ b/gcc/Makefile.in
-@@ -2941,18 +2941,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
- doc/gccint.info: $(TEXI_GCCINT_FILES)
- doc/cppinternals.info: $(TEXI_CPPINT_FILES)
- 
--doc/%.info: %.texi
--	if [ x$(BUILD_INFO) = xinfo ]; then \
--		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
--			-I $(gcc_docdir)/include -o $@ $<; \
--	fi
-+doc/%.info:
- 
- # Duplicate entry to handle renaming of gccinstall.info
--doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
--	if [ x$(BUILD_INFO) = xinfo ]; then \
--		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
--			-I $(gcc_docdir)/include -o $@ $<; \
--	fi
-+doc/gccinstall.info:
- 
- doc/cpp.dvi: $(TEXI_CPP_FILES)
- doc/gcc.dvi: $(TEXI_GCC_FILES)
diff --git a/toolchain/gcc/patches/5.2.0/020-no-plt-backport.patch b/toolchain/gcc/patches/5.2.0/020-no-plt-backport.patch
deleted file mode 100644
index b9702c9..0000000
--- a/toolchain/gcc/patches/5.2.0/020-no-plt-backport.patch
+++ /dev/null
@@ -1,28 +0,0 @@
---- a/gcc/calls.c
-+++ b/gcc/calls.c
-@@ -225,6 +225,12 @@ prepare_call_address (tree fndecl_or_typ
- 	       && targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
- 	      ? force_not_mem (memory_address (FUNCTION_MODE, funexp))
- 	      : memory_address (FUNCTION_MODE, funexp));
-+  else if (flag_pic && !flag_plt && fndecl_or_type
-+	   && TREE_CODE (fndecl_or_type) == FUNCTION_DECL
-+	   && !targetm.binds_local_p (fndecl_or_type))
-+    {
-+      funexp = force_reg (Pmode, funexp);
-+    }
-   else if (! sibcallp)
-     {
- #ifndef NO_FUNCTION_CSE
---- a/gcc/common.opt
-+++ b/gcc/common.opt
-@@ -1779,6 +1779,10 @@ fpie
- Common Report Var(flag_pie,1) Negative(fPIC)
- Generate position-independent code for executables if possible (small mode)
- 
-+fplt
-+Common Report Var(flag_plt) Init(1)
-+Use PLT for PIC calls (-fno-plt: load the address from GOT at call site)
-+
- fplugin=
- Common Joined RejectNegative Var(common_deferred_options) Defer
- Specify a plugin to load
diff --git a/toolchain/gcc/patches/5.2.0/030-fix-arm-codegen-PR-65932.patch b/toolchain/gcc/patches/5.2.0/030-fix-arm-codegen-PR-65932.patch
deleted file mode 100644
index 7f0b43c..0000000
--- a/toolchain/gcc/patches/5.2.0/030-fix-arm-codegen-PR-65932.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-Fix from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932
-
---- a/gcc/config/arm/arm.h
-+++ b/gcc/config/arm/arm.h
-@@ -628,16 +628,10 @@ extern int arm_arch_crc;
-    type, but kept valid in the wider mode.  The signedness of the
-    extension may differ from that of the type.  */
- 
--/* It is far faster to zero extend chars than to sign extend them */
--
- #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE)	\
-   if (GET_MODE_CLASS (MODE) == MODE_INT		\
-       && GET_MODE_SIZE (MODE) < 4)      	\
-     {						\
--      if (MODE == QImode)			\
--	UNSIGNEDP = 1;				\
--      else if (MODE == HImode)			\
--	UNSIGNEDP = 1;				\
-       (MODE) = SImode;				\
-     }
- 
diff --git a/toolchain/gcc/patches/5.2.0/040-fix-mips-ICE-PR-68400.patch b/toolchain/gcc/patches/5.2.0/040-fix-mips-ICE-PR-68400.patch
deleted file mode 100644
index e88af34..0000000
--- a/toolchain/gcc/patches/5.2.0/040-fix-mips-ICE-PR-68400.patch
+++ /dev/null
@@ -1,23 +0,0 @@
---- a/gcc/config/mips/mips.c
-+++ b/gcc/config/mips/mips.c
-@@ -8001,9 +8001,17 @@ mask_low_and_shift_p (machine_mode mode,
- bool
- and_operands_ok (machine_mode mode, rtx op1, rtx op2)
- {
--  return (memory_operand (op1, mode)
--	  ? and_load_operand (op2, mode)
--	  : and_reg_operand (op2, mode));
-+  if (!memory_operand (op1, mode))
-+    return and_reg_operand (op2, mode);
-+
-+  if (!and_load_operand (op2, mode))
-+    return false;
-+
-+  if (!TARGET_MIPS16 || si_mask_operand(op2, mode))
-+    return true;
-+
-+  op1 = XEXP (op1, 0);
-+  return !(REG_P (op1) && REGNO (op1) == STACK_POINTER_REGNUM);
- }
- 
- /* The canonical form of a mask-low-and-shift-left operation is
diff --git a/toolchain/gcc/patches/5.2.0/050-ARM-PR-target-68059-libgcc-should-not-use-__write-fo.patch b/toolchain/gcc/patches/5.2.0/050-ARM-PR-target-68059-libgcc-should-not-use-__write-fo.patch
deleted file mode 100644
index 371ca51..0000000
--- a/toolchain/gcc/patches/5.2.0/050-ARM-PR-target-68059-libgcc-should-not-use-__write-fo.patch
+++ /dev/null
@@ -1,35 +0,0 @@
-From: nsz <nsz@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Mon, 23 Nov 2015 15:17:55 +0000
-Subject: [PATCH] [ARM] PR target/68059 libgcc should not use __write for
- printing fatal error
-
-libgcc/
-	PR target/68059
-	* config/arm/linux-atomic-64bit.c (__write): Rename to...
-	(write): ...this and fix the return type.
-
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230762 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/libgcc/config/arm/linux-atomic-64bit.c
-+++ b/libgcc/config/arm/linux-atomic-64bit.c
-@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTI
-    kernels; we check for that in an init section and bail out rather
-    unceremoneously.  */
- 
--extern unsigned int __write (int fd, const void *buf, unsigned int count);
-+extern int write (int fd, const void *buf, unsigned int count);
- extern void abort (void);
- 
- /* Kernel helper for compare-and-exchange.  */
-@@ -56,7 +56,7 @@ static void __check_for_sync8_kernelhelp
- 	 for the user - I'm not sure I can rely on much else being
- 	 available at this point, so do the same as generic-morestack.c
- 	 write () and abort ().  */
--      __write (2 /* stderr.  */, err, sizeof (err));
-+      write (2 /* stderr.  */, err, sizeof (err));
-       abort ();
-     }
- };
diff --git a/toolchain/gcc/patches/5.2.0/100-uclibc-conf.patch b/toolchain/gcc/patches/5.2.0/100-uclibc-conf.patch
deleted file mode 100644
index ff9ad94..0000000
--- a/toolchain/gcc/patches/5.2.0/100-uclibc-conf.patch
+++ /dev/null
@@ -1,33 +0,0 @@
---- a/contrib/regression/objs-gcc.sh
-+++ b/contrib/regression/objs-gcc.sh
-@@ -106,6 +106,10 @@ if [ $H_REAL_TARGET = $H_REAL_HOST -a $H
-  then
-   make all-gdb all-dejagnu all-ld || exit 1
-   make install-gdb install-dejagnu install-ld || exit 1
-+elif [ $H_REAL_TARGET = $H_REAL_HOST -a $H_REAL_TARGET = i686-pc-linux-uclibc ]
-+ then
-+  make all-gdb all-dejagnu all-ld || exit 1
-+  make install-gdb install-dejagnu install-ld || exit 1
- elif [ $H_REAL_TARGET = $H_REAL_HOST ] ; then
-   make bootstrap || exit 1
-   make install || exit 1
---- a/libjava/classpath/ltconfig
-+++ b/libjava/classpath/ltconfig
-@@ -603,7 +603,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-
- 
- # Transform linux* to *-*-linux-gnu*, to support old configure scripts.
- case $host_os in
--linux-gnu*) ;;
-+linux-gnu*|linux-uclibc*) ;;
- linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
- esac
- 
-@@ -1247,7 +1247,7 @@ linux-gnuoldld* | linux-gnuaout* | linux
-   ;;
- 
- # This must be Linux ELF.
--linux-gnu*)
-+linux*)
-   version_type=linux
-   need_lib_prefix=no
-   need_version=no
diff --git a/toolchain/gcc/patches/5.2.0/200-musl_config.patch b/toolchain/gcc/patches/5.2.0/200-musl_config.patch
deleted file mode 100644
index a2b41b3..0000000
--- a/toolchain/gcc/patches/5.2.0/200-musl_config.patch
+++ /dev/null
@@ -1,309 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Fri, 8 May 2015 08:25:47 +0000 (+0000)
-Subject: [PATCH 2/13] musl libc config
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a9173ceabaf29c16f8ef226fbf98af373a4b2ceb
-
-[PATCH 2/13] musl libc config
-
-2015-05-08  Gregor Richards  <gregor.richards@uwaterloo.ca>
-	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config.gcc (LIBC_MUSL): New tm_defines macro.
-	* config/linux.h (OPTION_MUSL): Define.
-	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER32,)
-	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32,)
-	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
-	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
-	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
-	* config/linux.opt (mmusl): New option.
-	* doc/invoke.texi (GNU/Linux Options): Document -mmusl.
-	* configure.ac (gcc_cv_libc_provides_ssp): Add *-*-musl*.
-	(gcc_cv_target_dl_iterate_phdr): Add *-linux-musl*.
-	* configure: Regenerate.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222904 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config.gcc
-+++ b/gcc/config.gcc
-@@ -575,7 +575,7 @@ case ${target} in
- esac
- 
- # Common C libraries.
--tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
-+tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
- 
- # 32-bit x86 processors supported by --with-arch=.  Each processor
- # MUST be separated by exactly one space.
-@@ -720,6 +720,9 @@ case ${target} in
-     *-*-*uclibc*)
-       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
-       ;;
-+    *-*-*musl*)
-+      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
-+      ;;
-     *)
-       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
-       ;;
---- a/gcc/config/linux.h
-+++ b/gcc/config/linux.h
-@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI
- #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
- #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
- #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
-+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
- #else
- #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
- #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
- #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
-+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
- #endif
- 
- #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
-@@ -50,21 +52,25 @@ see the files COPYING3 and COPYING.RUNTI
-     } while (0)
- 
- /* Determine which dynamic linker to use depending on whether GLIBC or
--   uClibc or Bionic is the default C library and whether
--   -muclibc or -mglibc or -mbionic has been passed to change the default.  */
-+   uClibc or Bionic or musl is the default C library and whether
-+   -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
-+   the default.  */
- 
--#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
--  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
-+#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
-+  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
- 
- #if DEFAULT_LIBC == LIBC_GLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
--  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
- #elif DEFAULT_LIBC == LIBC_UCLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
--  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
- #elif DEFAULT_LIBC == LIBC_BIONIC
--#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
--  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
-+#elif DEFAULT_LIBC == LIBC_MUSL
-+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
-+  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
- #else
- #error "Unsupported DEFAULT_LIBC"
- #endif /* DEFAULT_LIBC */
-@@ -81,24 +87,100 @@ see the files COPYING3 and COPYING.RUNTI
- #define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
- #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
- #define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
-+/* Should be redefined for each target that supports musl.  */
-+#define MUSL_DYNAMIC_LINKER "/dev/null"
-+#define MUSL_DYNAMIC_LINKER32 "/dev/null"
-+#define MUSL_DYNAMIC_LINKER64 "/dev/null"
-+#define MUSL_DYNAMIC_LINKERX32 "/dev/null"
- 
- #define GNU_USER_DYNAMIC_LINKER						\
-   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
--			 BIONIC_DYNAMIC_LINKER)
-+			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
- #define GNU_USER_DYNAMIC_LINKER32					\
-   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
--			 BIONIC_DYNAMIC_LINKER32)
-+			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
- #define GNU_USER_DYNAMIC_LINKER64					\
-   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
--			 BIONIC_DYNAMIC_LINKER64)
-+			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
- #define GNU_USER_DYNAMIC_LINKERX32					\
-   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
--			 BIONIC_DYNAMIC_LINKERX32)
-+			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
- 
- /* Whether we have Bionic libc runtime */
- #undef TARGET_HAS_BIONIC
- #define TARGET_HAS_BIONIC (OPTION_BIONIC)
- 
-+/* musl avoids problematic includes by rearranging the include directories.
-+ * Unfortunately, this is mostly duplicated from cppdefault.c */
-+#if DEFAULT_LIBC == LIBC_MUSL
-+#define INCLUDE_DEFAULTS_MUSL_GPP			\
-+    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
-+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
-+    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
-+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
-+    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
-+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
-+
-+#ifdef LOCAL_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
-+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
-+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_LOCAL
-+#endif
-+
-+#ifdef PREFIX_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
-+    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_PREFIX
-+#endif
-+
-+#ifdef CROSS_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_CROSS			\
-+    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_CROSS
-+#endif
-+
-+#ifdef TOOL_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_TOOL			\
-+    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_TOOL
-+#endif
-+
-+#ifdef NATIVE_SYSTEM_HEADER_DIR
-+#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
-+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
-+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_NATIVE
-+#endif
-+
-+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
-+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
-+# define INCLUDE_DEFAULTS_MUSL_LOCAL
-+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
-+# define INCLUDE_DEFAULTS_MUSL_NATIVE
-+#else
-+# undef INCLUDE_DEFAULTS_MUSL_CROSS
-+# define INCLUDE_DEFAULTS_MUSL_CROSS
-+#endif
-+
-+#undef INCLUDE_DEFAULTS
-+#define INCLUDE_DEFAULTS				\
-+  {							\
-+    INCLUDE_DEFAULTS_MUSL_GPP				\
-+    INCLUDE_DEFAULTS_MUSL_PREFIX			\
-+    INCLUDE_DEFAULTS_MUSL_CROSS				\
-+    INCLUDE_DEFAULTS_MUSL_TOOL				\
-+    INCLUDE_DEFAULTS_MUSL_NATIVE			\
-+    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
-+    { 0, 0, 0, 0, 0, 0 }				\
-+  }
-+#endif
-+
- #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
- /* This is a *uclinux* target.  We don't define below macros to normal linux
-    versions, because doing so would require *uclinux* targets to include
---- a/gcc/config/linux.opt
-+++ b/gcc/config/linux.opt
-@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_l
- Use GNU C library
- 
- muclibc
--Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
-+Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl)
- Use uClibc C library
-+
-+mmusl
-+Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic)
-+Use musl C library
---- a/gcc/configure
-+++ b/gcc/configure
-@@ -27742,6 +27742,9 @@ if test "${gcc_cv_libc_provides_ssp+set}
- else
-   gcc_cv_libc_provides_ssp=no
-     case "$target" in
-+       *-*-musl*)
-+	 # All versions of musl provide stack protector
-+	 gcc_cv_libc_provides_ssp=yes;;
-        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
-       # glibc 2.4 and later provides __stack_chk_fail and
-       # either __stack_chk_guard, or TLS access to stack guard canary.
-@@ -27774,6 +27777,7 @@ fi
- 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
- 	 # simply assert that glibc does provide this, which is true for all
- 	 # realistically usable GNU/Hurd configurations.
-+	 # All supported versions of musl provide it as well
- 	 gcc_cv_libc_provides_ssp=yes;;
-        *-*-darwin* | *-*-freebsd*)
- 	 ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
-@@ -27870,6 +27874,9 @@ case "$target" in
-       gcc_cv_target_dl_iterate_phdr=no
-     fi
-     ;;
-+  *-linux-musl*)
-+    gcc_cv_target_dl_iterate_phdr=yes
-+    ;;
- esac
- 
- if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
---- a/gcc/configure.ac
-+++ b/gcc/configure.ac
-@@ -5229,6 +5229,9 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
-       gcc_cv_libc_provides_ssp,
-       [gcc_cv_libc_provides_ssp=no
-     case "$target" in
-+       *-*-musl*)
-+	 # All versions of musl provide stack protector
-+	 gcc_cv_libc_provides_ssp=yes;;
-        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
-       # glibc 2.4 and later provides __stack_chk_fail and
-       # either __stack_chk_guard, or TLS access to stack guard canary.
-@@ -5255,6 +5258,7 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
- 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
- 	 # simply assert that glibc does provide this, which is true for all
- 	 # realistically usable GNU/Hurd configurations.
-+	 # All supported versions of musl provide it as well
- 	 gcc_cv_libc_provides_ssp=yes;;
-        *-*-darwin* | *-*-freebsd*)
- 	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
-@@ -5328,6 +5332,9 @@ case "$target" in
-       gcc_cv_target_dl_iterate_phdr=no
-     fi
-     ;;
-+  *-linux-musl*)
-+    gcc_cv_target_dl_iterate_phdr=yes
-+    ;;
- esac
- GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
- if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -667,7 +667,7 @@ Objective-C and Objective-C++ Dialects}.
- -mcpu=@var{cpu}}
- 
- @emph{GNU/Linux Options}
--@gccoptlist{-mglibc -muclibc -mbionic -mandroid @gol
-+@gccoptlist{-mglibc -muclibc -mmusl -mbionic -mandroid @gol
- -tno-android-cc -tno-android-ld}
- 
- @emph{H8/300 Options}
-@@ -15324,13 +15324,19 @@ These @samp{-m} options are defined for
- @item -mglibc
- @opindex mglibc
- Use the GNU C library.  This is the default except
--on @samp{*-*-linux-*uclibc*} and @samp{*-*-linux-*android*} targets.
-+on @samp{*-*-linux-*uclibc*}, @samp{*-*-linux-*musl*} and
-+@samp{*-*-linux-*android*} targets.
- 
- @item -muclibc
- @opindex muclibc
- Use uClibc C library.  This is the default on
- @samp{*-*-linux-*uclibc*} targets.
- 
-+@item -mmusl
-+@opindex mmusl
-+Use the musl C library.  This is the default on
-+@samp{*-*-linux-*musl*} targets.
-+
- @item -mbionic
- @opindex mbionic
- Use Bionic C library.  This is the default on
diff --git a/toolchain/gcc/patches/5.2.0/201-musl_arm.patch b/toolchain/gcc/patches/5.2.0/201-musl_arm.patch
deleted file mode 100644
index 27a26af..0000000
--- a/toolchain/gcc/patches/5.2.0/201-musl_arm.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Wed, 27 May 2015 13:17:11 +0000 (+0000)
-Subject: [PATCH 4/13] arm musl support
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=de799bd087ab9a179768fea75bd195a31d3432a4
-
-[PATCH 4/13] arm musl support
-
-On behalf of szabolcs.nagy@arm.com
-
-2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
-
-	* config/arm/linux-eabi.h (MUSL_DYNAMIC_LINKER): Define.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223749 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -77,6 +77,23 @@
-     %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
-     %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
- 
-+/* For ARM musl currently supports four dynamic linkers:
-+   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
-+   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
-+   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
-+   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
-+   musl does not support the legacy OABI mode.
-+   All the dynamic linkers live in /lib.
-+   We default to soft-float, EL. */
-+#undef  MUSL_DYNAMIC_LINKER
-+#if TARGET_BIG_ENDIAN_DEFAULT
-+#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
-+#else
-+#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
-+#endif
-+#define MUSL_DYNAMIC_LINKER \
-+  "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
-+
- /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
-    use the GNU/Linux version, not the generic BPABI version.  */
- #undef  LINK_SPEC
diff --git a/toolchain/gcc/patches/5.2.0/202-musl_mips.patch b/toolchain/gcc/patches/5.2.0/202-musl_mips.patch
deleted file mode 100644
index 816dd8d..0000000
--- a/toolchain/gcc/patches/5.2.0/202-musl_mips.patch
+++ /dev/null
@@ -1,35 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Fri, 8 May 2015 15:16:50 +0000 (+0000)
-Subject: [PATCH 6/13] mips musl support
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=2550b6a866c887472b587bef87d433c51cf1ebc8
-
-[PATCH 6/13] mips musl support
-
-2015-05-08  Gregor Richards  <gregor.richards@uwaterloo.ca>
-	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config/mips/linux.h (MUSL_DYNAMIC_LINKER32): Define.
-	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERN32): Define.
-	(GNU_USER_DYNAMIC_LINKERN32): Update.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222915 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config/mips/linux.h
-+++ b/gcc/config/mips/linux.h
-@@ -37,7 +37,13 @@ along with GCC; see the file COPYING3.
- #define UCLIBC_DYNAMIC_LINKERN32 \
-   "%{mnan=2008:/lib32/ld-uClibc-mipsn8.so.0;:/lib32/ld-uClibc.so.0}"
- 
-+#undef MUSL_DYNAMIC_LINKER32
-+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-mips%{EL:el}%{msoft-float:-sf}.so.1"
-+#undef MUSL_DYNAMIC_LINKER64
-+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-mips64%{EL:el}%{msoft-float:-sf}.so.1"
-+#define MUSL_DYNAMIC_LINKERN32 "/lib/ld-musl-mipsn32%{EL:el}%{msoft-float:-sf}.so.1"
-+
- #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
- #define GNU_USER_DYNAMIC_LINKERN32 \
-   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
--                         BIONIC_DYNAMIC_LINKERN32)
-+                         BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKERN32)
diff --git a/toolchain/gcc/patches/5.2.0/203-musl_powerpc.patch b/toolchain/gcc/patches/5.2.0/203-musl_powerpc.patch
deleted file mode 100644
index 2783b27..0000000
--- a/toolchain/gcc/patches/5.2.0/203-musl_powerpc.patch
+++ /dev/null
@@ -1,209 +0,0 @@
-
-gcc/Changelog:
-
-2015-04-24  Gregor Richards  <gregor.richards@uwaterloo.ca>
-	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config.gcc (secure_plt): Add *-linux*-musl*.
-	* config/rs6000/linux64.h (MUSL_DYNAMIC_LINKER32): Define.
-	(MUSL_DYNAMIC_LINKER64): Define.
-	(GNU_USER_DYNAMIC_LINKER32): Update.
-	(GNU_USER_DYNAMIC_LINKER64): Update.
-	(CHOOSE_DYNAMIC_LINKER): Update.
-
-	* config/rs6000/secureplt.h (LINK_SECURE_PLT_DEFAULT_SPEC): Define.
-	* config/rs6000/sysv4.h (GNU_USER_DYNAMIC_LINKER): Update.
-	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER_E,)
-	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
-	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
-	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
-	(LINK_SECURE_PLT_DEFAULT_SPEC): Define.
-	(CHOOSE_DYNAMIC_LINKER, LINK_TARGET_SPEC, LINK_OS_LINUX_SPEC): Update.
-
-	* config/rs6000/sysv4le.h (MUSL_DYNAMIC_LINKER_E): Define.
-
---- a/gcc/config/rs6000/linux64.h
-+++ b/gcc/config/rs6000/linux64.h
-@@ -365,17 +365,21 @@ extern int dot_symbols;
- #endif
- #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
- #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
-+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
-+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E ".so.1"
- #if DEFAULT_LIBC == LIBC_UCLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
-+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
- #elif DEFAULT_LIBC == LIBC_GLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
-+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
-+#elif DEFAULT_LIBC == LIBC_MUSL
-+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
- #else
- #error "Unsupported DEFAULT_LIBC"
- #endif
- #define GNU_USER_DYNAMIC_LINKER32 \
--  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
-+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
- #define GNU_USER_DYNAMIC_LINKER64 \
--  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
-+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
- 
- #undef  DEFAULT_ASM_ENDIAN
- #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
---- a/gcc/config/rs6000/secureplt.h
-+++ b/gcc/config/rs6000/secureplt.h
-@@ -18,3 +18,4 @@ along with GCC; see the file COPYING3.
- <http://www.gnu.org/licenses/>.  */
- 
- #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
-+#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
---- a/gcc/config/rs6000/sysv4.h
-+++ b/gcc/config/rs6000/sysv4.h
-@@ -537,6 +537,9 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
- #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
- #define CC1_SECURE_PLT_DEFAULT_SPEC ""
- #endif
-+#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
-+#define LINK_SECURE_PLT_DEFAULT_SPEC ""
-+#endif
- 
- /* Pass -G xxx to the compiler.  */
- #undef CC1_SPEC
-@@ -586,7 +589,8 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
- 
- /* Override the default target of the linker.  */
- #define	LINK_TARGET_SPEC \
--  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
-+  ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
-+  "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
- 
- /* Any specific OS flags.  */
- #define LINK_OS_SPEC "\
-@@ -762,17 +766,22 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
- 
- #define LINK_START_LINUX_SPEC ""
- 
-+#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","")
-+
- #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
- #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
-+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
- #if DEFAULT_LIBC == LIBC_UCLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
-+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
-+#elif DEFAULT_LIBC == LIBC_MUSL
-+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
- #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
--#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
-+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
- #else
- #error "Unsupported DEFAULT_LIBC"
- #endif
- #define GNU_USER_DYNAMIC_LINKER \
--  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
-+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
- 
- #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
-   %{rdynamic:-export-dynamic} \
-@@ -895,6 +904,7 @@ ncrtn.o%s"
-   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
-   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
-   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
-+  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
-   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
-   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
-   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
-@@ -949,3 +959,72 @@ ncrtn.o%s"
- /* This target uses the sysv4.opt file.  */
- #define TARGET_USES_SYSV4_OPT 1
- 
-+/* Include order changes for musl, same as in generic linux.h.  */
-+#if DEFAULT_LIBC == LIBC_MUSL
-+#define INCLUDE_DEFAULTS_MUSL_GPP			\
-+    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
-+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
-+    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
-+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
-+    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
-+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
-+
-+#ifdef LOCAL_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
-+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
-+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_LOCAL
-+#endif
-+
-+#ifdef PREFIX_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
-+    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_PREFIX
-+#endif
-+
-+#ifdef CROSS_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_CROSS			\
-+    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_CROSS
-+#endif
-+
-+#ifdef TOOL_INCLUDE_DIR
-+#define INCLUDE_DEFAULTS_MUSL_TOOL			\
-+    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_TOOL
-+#endif
-+
-+#ifdef NATIVE_SYSTEM_HEADER_DIR
-+#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
-+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
-+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
-+#else
-+#define INCLUDE_DEFAULTS_MUSL_NATIVE
-+#endif
-+
-+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
-+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
-+# define INCLUDE_DEFAULTS_MUSL_LOCAL
-+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
-+# define INCLUDE_DEFAULTS_MUSL_NATIVE
-+#else
-+# undef INCLUDE_DEFAULTS_MUSL_CROSS
-+# define INCLUDE_DEFAULTS_MUSL_CROSS
-+#endif
-+
-+#undef INCLUDE_DEFAULTS
-+#define INCLUDE_DEFAULTS				\
-+  {							\
-+    INCLUDE_DEFAULTS_MUSL_GPP				\
-+    INCLUDE_DEFAULTS_MUSL_PREFIX			\
-+    INCLUDE_DEFAULTS_MUSL_CROSS				\
-+    INCLUDE_DEFAULTS_MUSL_TOOL				\
-+    INCLUDE_DEFAULTS_MUSL_NATIVE			\
-+    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
-+    { 0, 0, 0, 0, 0, 0 }				\
-+  }
-+#endif
---- a/gcc/config/rs6000/sysv4le.h
-+++ b/gcc/config/rs6000/sysv4le.h
-@@ -35,3 +35,5 @@
- /* Little-endian PowerPC64 Linux uses the ELF v2 ABI by default.  */
- #define LINUX64_DEFAULT_ABI_ELFv2
- 
-+#undef MUSL_DYNAMIC_LINKER_E
-+#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","le")
---- a/gcc/config.gcc
-+++ b/gcc/config.gcc
-@@ -2410,6 +2410,10 @@ powerpc*-*-linux*)
- 	    powerpc*-*-linux*paired*)
- 		tm_file="${tm_file} rs6000/750cl.h" ;;
- 	esac
-+	case ${target} in
-+		*-linux*-musl*)
-+			enable_secureplt=yes ;;
-+	esac
- 	if test x${enable_secureplt} = xyes; then
- 		tm_file="rs6000/secureplt.h ${tm_file}"
- 	fi
diff --git a/toolchain/gcc/patches/5.2.0/204-musl_sh.patch b/toolchain/gcc/patches/5.2.0/204-musl_sh.patch
deleted file mode 100644
index 8c3753d..0000000
--- a/toolchain/gcc/patches/5.2.0/204-musl_sh.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-gcc/Changelog:
-
-2015-04-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
-	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config/sh/linux.h (MUSL_DYNAMIC_LINKER): Define.
-	(MUSL_DYNAMIC_LINKER_E, MUSL_DYNAMIC_LINKER_FP): Define.
-
---- a/gcc/config/sh/linux.h
-+++ b/gcc/config/sh/linux.h
-@@ -43,6 +43,28 @@ along with GCC; see the file COPYING3.
- 
- #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
- 
-+#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
-+#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
-+#else
-+#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
-+#endif
-+
-+#if TARGET_CPU_DEFAULT & ( MASK_HARD_SH2A_DOUBLE | MASK_SH4 )
-+/* "-nofpu" if any nofpu option is specified */
-+#define MUSL_DYNAMIC_LINKER_FP \
-+  "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
-+  "m4-340|m4-400|m4-500|m4al|m5-32media-nofpu|m5-64media-nofpu|" \
-+  "m5-compact-nofpu:-nofpu}"
-+#else
-+/* "-nofpu" if none of the hard fpu options are specified */
-+#define MUSL_DYNAMIC_LINKER_FP \
-+  "%{m2a|m4|m4-100|m4-200|m4-300|m4a|m5-32media|m5-64media|m5-compact:;:-nofpu}"
-+#endif
-+
-+#undef MUSL_DYNAMIC_LINKER
-+#define MUSL_DYNAMIC_LINKER \
-+  "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP ".so.1"
-+
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
- 
- #undef SUBTARGET_LINK_EMUL_SUFFIX
diff --git a/toolchain/gcc/patches/5.2.0/205-musl_x86.patch b/toolchain/gcc/patches/5.2.0/205-musl_x86.patch
deleted file mode 100644
index 8772328..0000000
--- a/toolchain/gcc/patches/5.2.0/205-musl_x86.patch
+++ /dev/null
@@ -1,41 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Fri, 15 May 2015 13:20:01 +0000 (+0000)
-Subject: [PATCH 9/13] x86 musl support
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=5551c8d927c17f60837f15f8dfe46f945ba3fa9c
-
-[PATCH 9/13] x86 musl support
-
-On behalf of Szabolcs Nagy.
-
-2015-05-15  Gregor Richards  <gregor.richards@uwaterloo.ca>
-
-	* config/i386/linux.h (MUSL_DYNAMIC_LINKER): Define.
-	* config/i386/linux64.h (MUSL_DYNAMIC_LINKER32): Define.
-	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32): Define.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223218 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config/i386/linux.h
-+++ b/gcc/config/i386/linux.h
-@@ -21,3 +21,6 @@ along with GCC; see the file COPYING3.
- 
- #define GNU_USER_LINK_EMULATION "elf_i386"
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
-+
-+#undef MUSL_DYNAMIC_LINKER
-+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
---- a/gcc/config/i386/linux64.h
-+++ b/gcc/config/i386/linux64.h
-@@ -30,3 +30,10 @@ see the files COPYING3 and COPYING.RUNTI
- #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
- #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
- #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
-+
-+#undef MUSL_DYNAMIC_LINKER32
-+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
-+#undef MUSL_DYNAMIC_LINKER64
-+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
-+#undef MUSL_DYNAMIC_LINKERX32
-+#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
diff --git a/toolchain/gcc/patches/5.2.0/206-musl_aarch64.patch b/toolchain/gcc/patches/5.2.0/206-musl_aarch64.patch
deleted file mode 100644
index 6925a02..0000000
--- a/toolchain/gcc/patches/5.2.0/206-musl_aarch64.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-From: jgreenhalgh <jgreenhalgh@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Wed, 27 May 2015 16:46:39 +0000 (+0000)
-Subject: [PATCH 3/13] aarch64 musl support
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=b3ff21cf0531be91bc3fb8200296a7633090ec78
-
-[PATCH 3/13] aarch64 musl support
-
-gcc/Changelog:
-
-2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
-	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config/aarch64/aarch64-linux.h (MUSL_DYNAMIC_LINKER): Define.
-
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223766 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config/aarch64/aarch64-linux.h
-+++ b/gcc/config/aarch64/aarch64-linux.h
-@@ -23,6 +23,9 @@
- 
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
- 
-+#undef MUSL_DYNAMIC_LINKER
-+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
-+
- #undef  ASAN_CC1_SPEC
- #define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
- 
diff --git a/toolchain/gcc/patches/5.2.0/207-musl_fixincludes.patch b/toolchain/gcc/patches/5.2.0/207-musl_fixincludes.patch
deleted file mode 100644
index 0ff33d3..0000000
--- a/toolchain/gcc/patches/5.2.0/207-musl_fixincludes.patch
+++ /dev/null
@@ -1,30 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Wed, 22 Apr 2015 14:18:16 +0000 (+0000)
-Subject: fixincludes update for musl support
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=2dc727de2e87c2756a514cbb43cea23c99deaa3d
-
-fixincludes update for musl support
-
-On behalf of Szabolcs.Nagy@arm.com
-
-2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
-
-	* mkfixinc.sh: Add *-musl* with no fixes.
-
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222327 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/fixincludes/mkfixinc.sh
-+++ b/fixincludes/mkfixinc.sh
-@@ -19,7 +19,8 @@ case $machine in
-     powerpc-*-eabi*    | \
-     powerpc-*-rtems*   | \
-     powerpcle-*-eabisim* | \
--    powerpcle-*-eabi* )
-+    powerpcle-*-eabi* | \
-+    *-musl* )
- 	#  IF there is no include fixing,
- 	#  THEN create a no-op fixer and exit
- 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
diff --git a/toolchain/gcc/patches/5.2.0/209-musl_libstdc++.patch b/toolchain/gcc/patches/5.2.0/209-musl_libstdc++.patch
deleted file mode 100644
index 861bc76..0000000
--- a/toolchain/gcc/patches/5.2.0/209-musl_libstdc++.patch
+++ /dev/null
@@ -1,72 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Wed, 22 Apr 2015 14:24:11 +0000 (+0000)
-Subject: libstdc++, libgfortran gthr workaround for musl
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=1e5f711c11cb80ce609db9e9c1d8b2da0f7b5b61
-
-libstdc++, libgfortran gthr workaround for musl
-
-On behalf of szabolcs.nagy@arm.com
-
-[libstdc++-v3/]
-2015-04-22  Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config/os/generic/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK): Define.
-	* configure.host (os_include_dir): Set to "os/generic" for linux-musl*.
-
-[libgfortran/]
-2015-04-22  Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* acinclude.m4 (GTHREAD_USE_WEAK): Define as 0 for *-*-musl*.
-	* configure: Regenerate.
-
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222329 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/libgfortran/acinclude.m4
-+++ b/libgfortran/acinclude.m4
-@@ -100,7 +100,7 @@ void foo (void);
- 	      [Define to 1 if the target supports #pragma weak])
-   fi
-   case "$host" in
--    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
-+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
-       AC_DEFINE(GTHREAD_USE_WEAK, 0,
- 		[Define to 0 if the target shouldn't use #pragma weak])
-       ;;
---- a/libgfortran/configure
-+++ b/libgfortran/configure
-@@ -26447,7 +26447,7 @@ $as_echo "#define SUPPORTS_WEAK 1" >>con
- 
-   fi
-   case "$host" in
--    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
-+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
- 
- $as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h
- 
---- a/libstdc++-v3/config/os/generic/os_defines.h
-+++ b/libstdc++-v3/config/os/generic/os_defines.h
-@@ -33,4 +33,9 @@
- // System-specific #define, typedefs, corrections, etc, go here.  This
- // file will come before all others.
- 
-+// Disable the weak reference logic in gthr.h for os/generic because it
-+// is broken on every platform unless there is implementation specific
-+// workaround in gthr-posix.h and at link-time for static linking.
-+#define _GLIBCXX_GTHREAD_USE_WEAK 0
-+
- #endif
---- a/libstdc++-v3/configure.host
-+++ b/libstdc++-v3/configure.host
-@@ -273,6 +273,9 @@ case "${host_os}" in
-   freebsd*)
-     os_include_dir="os/bsd/freebsd"
-     ;;
-+  linux-musl*)
-+    os_include_dir="os/generic"
-+    ;;
-   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
-     if [ "$uclibc" = "yes" ]; then
-       os_include_dir="os/uclibc"
diff --git a/toolchain/gcc/patches/5.2.0/230-musl_libssp.patch b/toolchain/gcc/patches/5.2.0/230-musl_libssp.patch
deleted file mode 100644
index 30f42e9..0000000
--- a/toolchain/gcc/patches/5.2.0/230-musl_libssp.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- a/gcc/gcc.c
-+++ b/gcc/gcc.c
-@@ -727,7 +727,9 @@ proper position among the other output f
- #endif
- 
- #ifndef LINK_SSP_SPEC
--#ifdef TARGET_LIBC_PROVIDES_SSP
-+#if DEFAULT_LIBC == LIBC_MUSL
-+#define LINK_SSP_SPEC "-lssp_nonshared"
-+#elif defined(TARGET_LIBC_PROVIDES_SSP)
- #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
- 		       "|fstack-protector-strong|fstack-protector-explicit:}"
- #else
diff --git a/toolchain/gcc/patches/5.2.0/240-musl-libitm-fixes.patch b/toolchain/gcc/patches/5.2.0/240-musl-libitm-fixes.patch
deleted file mode 100644
index 533cb68..0000000
--- a/toolchain/gcc/patches/5.2.0/240-musl-libitm-fixes.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Wed, 22 Apr 2015 14:11:25 +0000 (+0000)
-Subject: libitm fixes for musl support
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=e53a4d49c3d03ab8eaddb073cf972c1c46d75338
-
-libitm fixes for musl support
-
-On behalf of Szabolcs.Nagy@arm.com
-
-2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
-
-       * config/arm/hwcap.cc: Use fcntl.h instead of sys/fcntl.h.
-       * config/linux/x86/tls.h: Only use __GLIBC_PREREQ if defined.
-
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222325 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/libitm/config/arm/hwcap.cc
-+++ b/libitm/config/arm/hwcap.cc
-@@ -40,7 +40,7 @@ int GTM_hwcap HIDDEN = 0
- 
- #ifdef __linux__
- #include <unistd.h>
--#include <sys/fcntl.h>
-+#include <fcntl.h>
- #include <elf.h>
- 
- static void __attribute__((constructor))
---- a/libitm/config/linux/x86/tls.h
-+++ b/libitm/config/linux/x86/tls.h
-@@ -25,16 +25,19 @@
- #ifndef LIBITM_X86_TLS_H
- #define LIBITM_X86_TLS_H 1
- 
--#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
-+#if defined(__GLIBC_PREREQ)
-+#if __GLIBC_PREREQ(2, 10)
- /* Use slots in the TCB head rather than __thread lookups.
-    GLIBC has reserved words 10 through 13 for TM.  */
- #define HAVE_ARCH_GTM_THREAD 1
- #define HAVE_ARCH_GTM_THREAD_DISP 1
- #endif
-+#endif
- 
- #include "config/generic/tls.h"
- 
--#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
-+#if defined(__GLIBC_PREREQ)
-+#if __GLIBC_PREREQ(2, 10)
- namespace GTM HIDDEN {
- 
- #ifdef __x86_64__
-@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
- 
- } // namespace GTM
- #endif /* >= GLIBC 2.10 */
-+#endif
- 
- #endif // LIBITM_X86_TLS_H
diff --git a/toolchain/gcc/patches/5.2.0/250-add-musl.patch b/toolchain/gcc/patches/5.2.0/250-add-musl.patch
deleted file mode 100644
index 8cbedde..0000000
--- a/toolchain/gcc/patches/5.2.0/250-add-musl.patch
+++ /dev/null
@@ -1,120 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Fri, 8 May 2015 08:30:40 +0000 (+0000)
-Subject: [PATCH 0/13] Add musl support to GCC
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=f2d678afa5b8385d763b93772d73d6bf80a9739e
-
-[PATCH 0/13] Add musl support to GCC
-
-2015-05-08  Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* config/glibc-stdint.h (OPTION_MUSL): Define.
-	(INT_FAST16_TYPE, INT_FAST32_TYPE, UINT_FAST16_TYPE, UINT_FAST32_TYPE):
-	Change the definition based on OPTION_MUSL for 64 bit targets.
-	* config/linux.h (OPTION_MUSL): Redefine.
-	* config/alpha/linux.h (OPTION_MUSL): Redefine.
-	* config/rs6000/linux.h (OPTION_MUSL): Redefine.
-	* config/rs6000/linux64.h (OPTION_MUSL): Redefine.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222905 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/gcc/config/alpha/linux.h
-+++ b/gcc/config/alpha/linux.h
-@@ -61,10 +61,14 @@ along with GCC; see the file COPYING3.
- #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
- #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
- #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
-+#undef OPTION_MUSL
-+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
- #else
- #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
- #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
- #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
-+#undef OPTION_MUSL
-+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
- #endif
- 
- /* Determine what functions are present at the runtime;
---- a/gcc/config/glibc-stdint.h
-+++ b/gcc/config/glibc-stdint.h
-@@ -22,6 +22,12 @@ a copy of the GCC Runtime Library Except
- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
- <http://www.gnu.org/licenses/>.  */
- 
-+/* Systems using musl libc should use this header and make sure
-+   OPTION_MUSL is defined correctly before using the TYPE macros. */
-+#ifndef OPTION_MUSL
-+#define OPTION_MUSL 0
-+#endif
-+
- #define SIG_ATOMIC_TYPE "int"
- 
- #define INT8_TYPE "signed char"
-@@ -43,12 +49,12 @@ see the files COPYING3 and COPYING.RUNTI
- #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
- 
- #define INT_FAST8_TYPE "signed char"
--#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
--#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
-+#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
-+#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
- #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
- #define UINT_FAST8_TYPE "unsigned char"
--#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
--#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
-+#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
-+#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
- #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
- 
- #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
---- a/gcc/config/linux.h
-+++ b/gcc/config/linux.h
-@@ -32,11 +32,13 @@ see the files COPYING3 and COPYING.RUNTI
- #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
- #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
- #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
-+#undef OPTION_MUSL
- #define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
- #else
- #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
- #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
- #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
-+#undef OPTION_MUSL
- #define OPTION_MUSL   (linux_libc == LIBC_MUSL)
- #endif
- 
---- a/gcc/config/rs6000/linux.h
-+++ b/gcc/config/rs6000/linux.h
-@@ -30,10 +30,14 @@
- #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
- #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
- #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
-+#undef OPTION_MUSL
-+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
- #else
- #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
- #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
- #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
-+#undef OPTION_MUSL
-+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
- #endif
- 
- /* Determine what functions are present at the runtime;
---- a/gcc/config/rs6000/linux64.h
-+++ b/gcc/config/rs6000/linux64.h
-@@ -299,10 +299,14 @@ extern int dot_symbols;
- #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
- #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
- #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
-+#undef OPTION_MUSL
-+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
- #else
- #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
- #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
- #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
-+#undef OPTION_MUSL
-+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
- #endif
- 
- /* Determine what functions are present at the runtime;
diff --git a/toolchain/gcc/patches/5.2.0/260-musl-add-unwind-fix.patch b/toolchain/gcc/patches/5.2.0/260-musl-add-unwind-fix.patch
deleted file mode 100644
index a3b83e2..0000000
--- a/toolchain/gcc/patches/5.2.0/260-musl-add-unwind-fix.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Wed, 22 Apr 2015 14:20:01 +0000 (+0000)
-Subject: unwind fix for musl
-X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a2e31d0681d8a47389b8a3552622fbd9827bcef4
-
-unwind fix for musl
-
-On behalf of szabolcs.nagy@arm.com
-
-2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
-	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
-
-	* unwind-dw2-fde-dip.c (USE_PT_GNU_EH_FRAME): Define it on
-	Linux if target provides dl_iterate_phdr.
-
-
-git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222328 138bc75d-0d04-0410-961f-82ee72b054a4
----
-
---- a/libgcc/unwind-dw2-fde-dip.c
-+++ b/libgcc/unwind-dw2-fde-dip.c
-@@ -59,6 +59,12 @@
- 
- #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-     && defined(TARGET_DL_ITERATE_PHDR) \
-+    && defined(__linux__)
-+# define USE_PT_GNU_EH_FRAME
-+#endif
-+
-+#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-+    && defined(TARGET_DL_ITERATE_PHDR) \
-     && (defined(__DragonFly__) || defined(__FreeBSD__))
- # define ElfW __ElfN
- # define USE_PT_GNU_EH_FRAME
diff --git a/toolchain/gcc/patches/5.2.0/270-musl-add-powerpc-softfloat-fix.patch b/toolchain/gcc/patches/5.2.0/270-musl-add-powerpc-softfloat-fix.patch
deleted file mode 100644
index 798936c..0000000
--- a/toolchain/gcc/patches/5.2.0/270-musl-add-powerpc-softfloat-fix.patch
+++ /dev/null
@@ -1,24 +0,0 @@
---- a/gcc/config/rs6000/linux64.h
-+++ b/gcc/config/rs6000/linux64.h
-@@ -369,8 +369,8 @@ extern int dot_symbols;
- #endif
- #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
- #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
--#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
--#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E ".so.1"
-+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
-+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
- #if DEFAULT_LIBC == LIBC_UCLIBC
- #define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
- #elif DEFAULT_LIBC == LIBC_GLIBC
---- a/gcc/config/rs6000/sysv4.h
-+++ b/gcc/config/rs6000/sysv4.h
-@@ -770,7 +770,7 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
- 
- #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
- #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
--#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
-+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
- #if DEFAULT_LIBC == LIBC_UCLIBC
- #define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
- #elif DEFAULT_LIBC == LIBC_MUSL
diff --git a/toolchain/gcc/patches/5.2.0/800-arm_v5te_no_ldrd_strd.patch b/toolchain/gcc/patches/5.2.0/800-arm_v5te_no_ldrd_strd.patch
deleted file mode 100644
index 0edeb13..0000000
--- a/toolchain/gcc/patches/5.2.0/800-arm_v5te_no_ldrd_strd.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/config/arm/arm.h
-+++ b/gcc/config/arm/arm.h
-@@ -285,7 +285,7 @@ extern void (*arm_lang_output_object_att
- /* Thumb-1 only.  */
- #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
- 
--#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
-+#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
-                                          && !TARGET_THUMB1)
- 
- #define TARGET_CRC32			(arm_arch_crc)
diff --git a/toolchain/gcc/patches/5.2.0/810-arm-softfloat-libgcc.patch b/toolchain/gcc/patches/5.2.0/810-arm-softfloat-libgcc.patch
deleted file mode 100644
index 1d06f5b..0000000
--- a/toolchain/gcc/patches/5.2.0/810-arm-softfloat-libgcc.patch
+++ /dev/null
@@ -1,25 +0,0 @@
---- a/libgcc/config/arm/t-linux
-+++ b/libgcc/config/arm/t-linux
-@@ -1,6 +1,10 @@
- LIB1ASMSRC = arm/lib1funcs.S
- LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
--	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
-+	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
-+	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
-+	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
-+	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
-+	_arm_fixsfsi _arm_fixunssfsi
- 
- # Just for these, we omit the frame pointer since it makes such a big
- # difference.
---- a/gcc/config/arm/linux-elf.h
-+++ b/gcc/config/arm/linux-elf.h
-@@ -60,8 +60,6 @@
-    %{shared:-lc} \
-    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
- 
--#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
--
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
- 
- #define LINUX_TARGET_LINK_SPEC  "%{h*} \
diff --git a/toolchain/gcc/patches/5.2.0/820-libgcc_pic.patch b/toolchain/gcc/patches/5.2.0/820-libgcc_pic.patch
deleted file mode 100644
index 42bf0c8..0000000
--- a/toolchain/gcc/patches/5.2.0/820-libgcc_pic.patch
+++ /dev/null
@@ -1,36 +0,0 @@
---- a/libgcc/Makefile.in
-+++ b/libgcc/Makefile.in
-@@ -887,11 +887,12 @@ $(libgcov-driver-objects): %$(objext): $
- 
- # Static libraries.
- libgcc.a: $(libgcc-objects)
-+libgcc_pic.a: $(libgcc-s-objects)
- libgcov.a: $(libgcov-objects)
- libunwind.a: $(libunwind-objects)
- libgcc_eh.a: $(libgcc-eh-objects)
- 
--libgcc.a libgcov.a libunwind.a libgcc_eh.a:
-+libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
- 	-rm -f $@
- 
- 	objects="$(objects)";					\
-@@ -913,7 +914,7 @@ libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_E
- endif
- 
- ifeq ($(enable_shared),yes)
--all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
-+all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
- ifneq ($(LIBUNWIND),)
- all: libunwind$(SHLIB_EXT)
- endif
-@@ -1108,6 +1109,10 @@ install-shared:
- 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
- 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
- 
-+	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
-+	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
-+	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
-+
- 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
- 		@shlib_base_name@,libgcc_s,$(subst \
- 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
diff --git a/toolchain/gcc/patches/5.2.0/830-arm_unbreak_armv4t.patch b/toolchain/gcc/patches/5.2.0/830-arm_unbreak_armv4t.patch
deleted file mode 100644
index 37f8f2a..0000000
--- a/toolchain/gcc/patches/5.2.0/830-arm_unbreak_armv4t.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-http://sourceware.org/ml/crossgcc/2008-05/msg00009.html
-
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -45,7 +45,7 @@
-    The ARM10TDMI core is the default for armv5t, so set
-    SUBTARGET_CPU_DEFAULT to achieve this.  */
- #undef  SUBTARGET_CPU_DEFAULT
--#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
-+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
- 
- /* TARGET_BIG_ENDIAN_DEFAULT is set in
-    config.gcc for big endian configurations.  */
diff --git a/toolchain/gcc/patches/5.2.0/840-armv4_pass_fix-v4bx_to_ld.patch b/toolchain/gcc/patches/5.2.0/840-armv4_pass_fix-v4bx_to_ld.patch
deleted file mode 100644
index cb1fb98..0000000
--- a/toolchain/gcc/patches/5.2.0/840-armv4_pass_fix-v4bx_to_ld.patch
+++ /dev/null
@@ -1,19 +0,0 @@
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -94,10 +94,15 @@
- #define MUSL_DYNAMIC_LINKER \
-   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
- 
-+/* For armv4 we pass --fix-v4bx to linker to support EABI */
-+#undef TARGET_FIX_V4BX_SPEC
-+#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
-+  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
-+
- /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
-    use the GNU/Linux version, not the generic BPABI version.  */
- #undef  LINK_SPEC
--#define LINK_SPEC EABI_LINK_SPEC					\
-+#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
-   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
- 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
- 
diff --git a/toolchain/gcc/patches/5.2.0/850-use_shared_libgcc.patch b/toolchain/gcc/patches/5.2.0/850-use_shared_libgcc.patch
deleted file mode 100644
index 5818cf4..0000000
--- a/toolchain/gcc/patches/5.2.0/850-use_shared_libgcc.patch
+++ /dev/null
@@ -1,47 +0,0 @@
---- a/gcc/config/arm/linux-eabi.h
-+++ b/gcc/config/arm/linux-eabi.h
-@@ -131,10 +131,6 @@
- #define ENDFILE_SPEC \
-   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
- 
--/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
--   do not use -lfloat.  */
--#undef LIBGCC_SPEC
--
- /* Clear the instruction cache from `beg' to `end'.  This is
-    implemented in lib1funcs.S, so ensure an error if this definition
-    is used.  */
---- a/gcc/config/linux.h
-+++ b/gcc/config/linux.h
-@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
- 	builtin_assert ("system=posix");			\
-     } while (0)
- 
-+#ifndef LIBGCC_SPEC
-+#define LIBGCC_SPEC "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
-+#endif
-+
- /* Determine which dynamic linker to use depending on whether GLIBC or
-    uClibc or Bionic or musl is the default C library and whether
-    -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
---- a/libgcc/mkmap-symver.awk
-+++ b/libgcc/mkmap-symver.awk
-@@ -132,5 +132,5 @@ function output(lib) {
-   else if (inherit[lib])
-     printf("} %s;\n", inherit[lib]);
-   else
--    printf ("\n  local:\n\t*;\n};\n");
-+    printf ("\n\t*;\n};\n");
- }
---- a/gcc/config/rs6000/linux.h
-+++ b/gcc/config/rs6000/linux.h
-@@ -60,6 +60,9 @@
- #undef	CPP_OS_DEFAULT_SPEC
- #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
- 
-+#undef LIBGCC_SPEC
-+#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
-+
- #undef  LINK_SHLIB_SPEC
- #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
- 
diff --git a/toolchain/gcc/patches/5.2.0/851-libgcc_no_compat.patch b/toolchain/gcc/patches/5.2.0/851-libgcc_no_compat.patch
deleted file mode 100644
index 80c3476..0000000
--- a/toolchain/gcc/patches/5.2.0/851-libgcc_no_compat.patch
+++ /dev/null
@@ -1,12 +0,0 @@
---- a/libgcc/config/t-libunwind
-+++ b/libgcc/config/t-libunwind
-@@ -2,8 +2,7 @@
- 
- HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
- 
--LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
--  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
-+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
- LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
- 
- # Override the default value from t-slibgcc-elf-ver and mention -lunwind
diff --git a/toolchain/gcc/patches/5.2.0/870-ppc_no_crtsavres.patch b/toolchain/gcc/patches/5.2.0/870-ppc_no_crtsavres.patch
deleted file mode 100644
index b38b9d5..0000000
--- a/toolchain/gcc/patches/5.2.0/870-ppc_no_crtsavres.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/config/rs6000/rs6000.c
-+++ b/gcc/config/rs6000/rs6000.c
-@@ -21453,7 +21453,7 @@ rs6000_savres_strategy (rs6000_stack_t *
-   /* Define cutoff for using out-of-line functions to save registers.  */
-   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
-     {
--      if (!optimize_size)
-+      if (1)
- 	{
- 	  strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
- 	  strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
diff --git a/toolchain/gcc/patches/5.2.0/880-no_java_section.patch b/toolchain/gcc/patches/5.2.0/880-no_java_section.patch
deleted file mode 100644
index def6c9f..0000000
--- a/toolchain/gcc/patches/5.2.0/880-no_java_section.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/gcc/defaults.h
-+++ b/gcc/defaults.h
-@@ -380,7 +380,7 @@ see the files COPYING3 and COPYING.RUNTI
- /* If we have named section and we support weak symbols, then use the
-    .jcr section for recording java classes which need to be registered
-    at program start-up time.  */
--#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
-+#if 0 && defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
- #ifndef JCR_SECTION_NAME
- #define JCR_SECTION_NAME ".jcr"
- #endif
diff --git a/toolchain/gcc/patches/5.2.0/900-bad-mips16-crt.patch b/toolchain/gcc/patches/5.2.0/900-bad-mips16-crt.patch
deleted file mode 100644
index dd6e9dc..0000000
--- a/toolchain/gcc/patches/5.2.0/900-bad-mips16-crt.patch
+++ /dev/null
@@ -1,9 +0,0 @@
---- a/libgcc/config/mips/t-mips16
-+++ b/libgcc/config/mips/t-mips16
-@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
- 
- # Version these symbols if building libgcc.so.
- SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
-+
-+CRTSTUFF_T_CFLAGS += -mno-mips16
-+CRTSTUFF_T_CFLAGS_S += -mno-mips16
diff --git a/toolchain/gcc/patches/5.2.0/910-mbsd_multi.patch b/toolchain/gcc/patches/5.2.0/910-mbsd_multi.patch
deleted file mode 100644
index 68661d2..0000000
--- a/toolchain/gcc/patches/5.2.0/910-mbsd_multi.patch
+++ /dev/null
@@ -1,222 +0,0 @@
-
-	This patch brings over a few features from MirBSD:
-	* -fhonour-copts
-	  If this option is not given, it's warned (depending
-	  on environment variables). This is to catch errors
-	  of misbuilt packages which override CFLAGS themselves.
-	* -Werror-maybe-reset
-	  Has the effect of -Wno-error if GCC_NO_WERROR is
-	  set and not '0', a no-operation otherwise. This is
-	  to be able to use -Werror in "make" but prevent
-	  GNU autoconf generated configure scripts from
-	  freaking out.
-
-	This patch was authored by Thorsten Glaser <tg at mirbsd.de>
-	with copyright assignment to the FSF in effect.
-
---- a/gcc/c-family/c-opts.c
-+++ b/gcc/c-family/c-opts.c
-@@ -122,6 +122,9 @@ static int class_dump_flags;
- /* Whether any standard preincluded header has been preincluded.  */
- static bool done_preinclude;
- 
-+/* Check if a port honours COPTS.  */
-+static int honour_copts = 0;
-+
- static void handle_OPT_d (const char *);
- static void set_std_cxx98 (int);
- static void set_std_cxx11 (int);
-@@ -449,6 +452,12 @@ c_common_handle_option (size_t scode, co
-       flag_no_builtin = !value;
-       break;
- 
-+    case OPT_fhonour_copts:
-+      if (c_language == clk_c) {
-+        honour_copts++;
-+      }
-+      break;
-+
-     case OPT_fconstant_string_class_:
-       constant_string_class_name = arg;
-       break;
-@@ -1034,6 +1043,47 @@ c_common_init (void)
-       return false;
-     }
- 
-+  if (c_language == clk_c) {
-+    char *ev = getenv ("GCC_HONOUR_COPTS");
-+    int evv;
-+    if (ev == NULL)
-+      evv = -1;
-+    else if ((*ev == '0') || (*ev == '\0'))
-+      evv = 0;
-+    else if (*ev == '1')
-+      evv = 1;
-+    else if (*ev == '2')
-+      evv = 2;
-+    else if (*ev == 's')
-+      evv = -1;
-+    else {
-+      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
-+      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
-+    }
-+    if (evv == 1) {
-+      if (honour_copts == 0) {
-+        error ("someone does not honour COPTS at all in lenient mode");
-+        return false;
-+      } else if (honour_copts != 1) {
-+        warning (0, "someone does not honour COPTS correctly, passed %d times",
-+         honour_copts);
-+      }
-+    } else if (evv == 2) {
-+      if (honour_copts == 0) {
-+        error ("someone does not honour COPTS at all in strict mode");
-+        return false;
-+      } else if (honour_copts != 1) {
-+        error ("someone does not honour COPTS correctly, passed %d times",
-+         honour_copts);
-+        return false;
-+      }
-+    } else if (evv == 0) {
-+      if (honour_copts != 1)
-+        inform (0, "someone does not honour COPTS correctly, passed %d times",
-+         honour_copts);
-+    }
-+  }
-+
-   return true;
- }
- 
---- a/gcc/c-family/c.opt
-+++ b/gcc/c-family/c.opt
-@@ -431,6 +431,10 @@ Wfloat-conversion
- C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
- Warn for implicit type conversions that cause loss of floating point precision
- 
-+Werror-maybe-reset
-+C ObjC C++ ObjC++
-+; Documented in common.opt
-+
- Wfloat-equal
- C ObjC C++ ObjC++ Var(warn_float_equal) Warning
- Warn if testing floating point numbers for equality
-@@ -1161,6 +1165,9 @@ C++ ObjC++ Optimization Alias(fexception
- fhonor-std
- C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
- 
-+fhonour-copts
-+C ObjC C++ ObjC++ RejectNegative
-+
- fhosted
- C ObjC
- Assume normal C execution environment
---- a/gcc/common.opt
-+++ b/gcc/common.opt
-@@ -561,6 +561,10 @@ Werror=
- Common Joined
- Treat specified warning as error
- 
-+Werror-maybe-reset
-+Common
-+If environment variable GCC_NO_WERROR is set, act as -Wno-error
-+
- Wextra
- Common Var(extra_warnings) Warning
- Print extra (possibly unwanted) warnings
-@@ -1360,6 +1364,9 @@ fguess-branch-probability
- Common Report Var(flag_guess_branch_prob) Optimization
- Enable guessing of branch probabilities
- 
-+fhonour-copts
-+Common RejectNegative
-+
- ; Nonzero means ignore `#ident' directives.  0 means handle them.
- ; Generate position-independent code for executables if possible
- ; On SVR4 targets, it also controls whether or not to emit a
---- a/gcc/opts.c
-+++ b/gcc/opts.c
-@@ -1699,6 +1699,17 @@ common_handle_option (struct gcc_options
- 			       opts, opts_set, loc, dc);
-       break;
- 
-+    case OPT_Werror_maybe_reset:
-+      {
-+        char *ev = getenv ("GCC_NO_WERROR");
-+        if ((ev != NULL) && (*ev != '0'))
-+          warnings_are_errors = 0;
-+      }
-+      break;
-+
-+    case OPT_fhonour_copts:
-+      break;
-+
-     case OPT_Wlarger_than_:
-       opts->x_larger_than_size = value;
-       opts->x_warn_larger_than = value != -1;
---- a/gcc/doc/cppopts.texi
-+++ b/gcc/doc/cppopts.texi
-@@ -163,6 +163,11 @@ in older programs.  This warning is on b
- Make all warnings into hard errors.  Source code which triggers warnings
- will be rejected.
- 
-+ at item -Werror-maybe-reset
-+ at opindex Werror-maybe-reset
-+Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
-+variable is set to anything other than 0 or empty.
-+
- @item -Wsystem-headers
- @opindex Wsystem-headers
- Issue warnings for code in system headers.  These are normally unhelpful
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -251,7 +251,7 @@ Objective-C and Objective-C++ Dialects}.
- -Wdisabled-optimization @gol
- -Wno-discarded-qualifiers -Wno-discarded-array-qualifiers @gol
- -Wno-div-by-zero -Wdouble-promotion -Wempty-body  -Wenum-compare @gol
---Wno-endif-labels -Werror  -Werror=* @gol
-+-Wno-endif-labels -Werror  -Werror=* -Werror-maybe-reset @gol
- -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 @gol
- -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
- -Wformat-security  -Wformat-signedness  -Wformat-y2k @gol
-@@ -5371,6 +5371,22 @@ This option is only supported for C and
- @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
- @option{-Wno-pointer-sign}.
- 
-+ at item -Werror-maybe-reset
-+ at opindex Werror-maybe-reset
-+Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
-+variable is set to anything other than 0 or empty.
-+
-+ at item -fhonour-copts
-+ at opindex fhonour-copts
-+If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
-+given at least once, and warn if it is given more than once.
-+If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
-+given exactly once.
-+If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
-+is not given exactly once.
-+The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
-+This flag and environment variable only affect the C language.
-+
- @item -Wstack-protector
- @opindex Wstack-protector
- @opindex Wno-stack-protector
-@@ -7844,7 +7860,7 @@ so, the first branch is redirected to ei
- second branch or a point immediately following it, depending on whether
- the condition is known to be true or false.
- 
--Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
-+Enabled at levels @option{-O3}.
- 
- @item -fsplit-wide-types
- @opindex fsplit-wide-types
---- a/gcc/java/jvspec.c
-+++ b/gcc/java/jvspec.c
-@@ -629,6 +629,7 @@ lang_specific_pre_link (void)
-      class name.  Append dummy `.c' that can be stripped by set_input so %b
-      is correct.  */ 
-   set_input (concat (main_class_name, "main.c", NULL));
-+  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
-   err = do_spec (jvgenmain_spec);
-   if (err == 0)
-     {
diff --git a/toolchain/gcc/patches/5.2.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/5.2.0/920-specs_nonfatal_getenv.patch
deleted file mode 100644
index 3d708f2..0000000
--- a/toolchain/gcc/patches/5.2.0/920-specs_nonfatal_getenv.patch
+++ /dev/null
@@ -1,15 +0,0 @@
---- a/gcc/gcc.c
-+++ b/gcc/gcc.c
-@@ -8807,8 +8807,10 @@ getenv_spec_function (int argc, const ch
- 
-   value = getenv (argv[0]);
-   if (!value)
--    fatal_error (input_location,
--		 "environment variable %qs not defined", argv[0]);
-+    {
-+      warning (input_location, "environment variable %qs not defined", argv[0]);
-+      value = "";
-+    }
- 
-   /* We have to escape every character of the environment variable so
-      they are not interpreted as active spec characters.  A
diff --git a/toolchain/gcc/patches/5.2.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/5.2.0/930-fix-mips-noexecstack.patch
deleted file mode 100644
index c05844d..0000000
--- a/toolchain/gcc/patches/5.2.0/930-fix-mips-noexecstack.patch
+++ /dev/null
@@ -1,111 +0,0 @@
-From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
-From: Andrew McDonnell <bugs@andrewmcdonnell.net>
-Date: Fri, 3 Oct 2014 19:09:00 +0930
-Subject: Add .note.GNU-stack section
-
-See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
-Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
-
-Re: [Patch, MIPS] Add .note.GNU-stack section
-
-    From: Steve Ellcey <sellcey at mips dot com>
-
-On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
->
->
-> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
-
->         This works except you did not update the assembly files in
->         libgcc or glibc. We (Cavium) have the same patch in our tree
->         for a few released versions.
-
-> Mind just checking yours in then Andrew?
-
-> Thanks!
-> -eric
-
-I talked to Andrew about what files he changed in GCC and created and
-tested this new patch.  Andrew also mentioned changing some assembly
-files in glibc but I don't see any use of '.section .note.GNU-stack' in
-any assembly files in glibc (for any platform) so I wasn't planning on
-creating a glibc to add them to mips glibc assembly language files.
-
-OK to check in this patch?
-
-Steve Ellcey
-sellcey@mips.com
-
-
-
-2014-09-26  Steve Ellcey  <sellcey@mips.com>
----
- gcc/config/mips/mips.c          | 3 +++
- libgcc/config/mips/crti.S       | 4 ++++
- libgcc/config/mips/crtn.S       | 3 +++
- libgcc/config/mips/mips16.S     | 4 ++++
- libgcc/config/mips/vr4120-div.S | 4 ++++
- 5 files changed, 18 insertions(+)
-
---- a/gcc/config/mips/mips.c
-+++ b/gcc/config/mips/mips.c
-@@ -19629,6 +19629,9 @@ mips_lra_p (void)
- #undef TARGET_LRA_P
- #define TARGET_LRA_P mips_lra_p
- 
-+#undef TARGET_ASM_FILE_END
-+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
-+
- struct gcc_target targetm = TARGET_INITIALIZER;
- 
- #include "gt-mips.h"
---- a/libgcc/config/mips/crti.S
-+++ b/libgcc/config/mips/crti.S
-@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
- <http://www.gnu.org/licenses/>.  */
- 
-+
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+
- /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
-    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
- 
---- a/libgcc/config/mips/crtn.S
-+++ b/libgcc/config/mips/crtn.S
-@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
- <http://www.gnu.org/licenses/>.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+
- /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
-    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
- 
---- a/libgcc/config/mips/mips16.S
-+++ b/libgcc/config/mips/mips16.S
-@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
-    values using the soft-float calling convention, but do the actual
-    operation using the hard floating point instructions.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+	.previous
-+
- #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
- 
- /* This file contains 32-bit assembly code.  */
---- a/libgcc/config/mips/vr4120-div.S
-+++ b/libgcc/config/mips/vr4120-div.S
-@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
-    -mfix-vr4120.  div and ddiv do not give the correct result when one
-    of the operands is negative.  */
- 
-+/* An executable stack is *not* required for these functions.  */
-+	.section .note.GNU-stack,"",%progbits
-+	.previous
-+
- 	.set	nomips16
- 
- #define DIV								\
diff --git a/toolchain/gcc/patches/5.2.0/940-no-clobber-stamp-bits.patch b/toolchain/gcc/patches/5.2.0/940-no-clobber-stamp-bits.patch
deleted file mode 100644
index bf2ab07..0000000
--- a/toolchain/gcc/patches/5.2.0/940-no-clobber-stamp-bits.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/libstdc++-v3/include/Makefile.in
-+++ b/libstdc++-v3/include/Makefile.in
-@@ -1382,7 +1382,7 @@ stamp-bits: ${bits_headers}
- 	@$(STAMP) stamp-bits
- 
- stamp-bits-sup: stamp-bits ${bits_sup_headers}
--	@-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
-+	@-cd ${bits_builddir} && $(LN_S) $(filter-out stamp-bits,$?) . 2>/dev/null
- 	@$(STAMP) stamp-bits-sup
- 
- stamp-c_base: ${c_base_headers}
diff --git a/toolchain/gcc/patches/5.2.0/950-cpp_file_path_translation.patch b/toolchain/gcc/patches/5.2.0/950-cpp_file_path_translation.patch
deleted file mode 100644
index 2324d75..0000000
--- a/toolchain/gcc/patches/5.2.0/950-cpp_file_path_translation.patch
+++ /dev/null
@@ -1,182 +0,0 @@
-Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
-
---- a/gcc/c-family/c-opts.c
-+++ b/gcc/c-family/c-opts.c
-@@ -581,6 +581,10 @@ c_common_handle_option (size_t scode, co
-       add_path (xstrdup (arg), SYSTEM, 0, true);
-       break;
- 
-+    case OPT_iremap:
-+      add_cpp_remap_path (arg);
-+      break;
-+
-     case OPT_iwithprefix:
-       add_prefixed_path (arg, SYSTEM);
-       break;
---- a/gcc/c-family/c.opt
-+++ b/gcc/c-family/c.opt
-@@ -1528,6 +1528,10 @@ iquote
- C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
- -iquote <dir>	Add <dir> to the end of the quote include path
- 
-+iremap
-+C ObjC C++ ObjC++ Joined Separate
-+-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix in __FILE__.
-+
- iwithprefix
- C ObjC C++ ObjC++ Joined Separate
- -iwithprefix <dir>	Add <dir> to the end of the system include path
---- a/gcc/doc/cpp.texi
-+++ b/gcc/doc/cpp.texi
-@@ -4441,6 +4441,7 @@ without notice.
- @c man begin SYNOPSIS
- cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
-     [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
-+    [@option{-iremap}@var{src}:@var{dst}]
-     [@option{-W}@var{warn}@dots{}]
-     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
-     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
---- a/gcc/doc/cppopts.texi
-+++ b/gcc/doc/cppopts.texi
-@@ -532,6 +532,12 @@ Search @var{dir} only for header files r
- If @var{dir} begins with @code{=}, then the @code{=} will be replaced
- by the sysroot prefix; see @option{--sysroot} and @option{-isysroot}.
- 
-+@item -iremap @var{src}:@var{dst}
-+@opindex iremap
-+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
-+This option can be specified more than once.  Processing stops at the first
-+match.
-+
- @item -fdirectives-only
- @opindex fdirectives-only
- When preprocessing, handle directives, but do not expand macros.
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -494,8 +494,8 @@ Objective-C and Objective-C++ Dialects}.
- @item Directory Options
- @xref{Directory Options,,Options for Directory Search}.
- @gccoptlist{-B@var{prefix} -I@var{dir} -iplugindir=@var{dir} @gol
---iquote@var{dir} -L@var{dir} -specs=@var{file} -I- @gol
----sysroot=@var{dir} --no-sysroot-suffix}
-+-iquote@var{dir} -iremap@var{src}:@var{dst} -L@var{dir} -specs=@var{file} @gol
-+-I- --sysroot=@var{dir} --no-sysroot-suffix}
- 
- @item Machine Dependent Options
- @xref{Submodel Options,,Hardware Models and Configurations}.
-@@ -11463,6 +11463,12 @@ be searched for header files only for th
- "@var{file}"}; they are not searched for @code{#include <@var{file}>},
- otherwise just like @option{-I}.
- 
-+@item -iremap @var{src}:@var{dst}
-+@opindex iremap
-+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
-+This option can be specified more than once.  Processing stops at the first
-+match.
-+
- @item -L@var{dir}
- @opindex L
- Add directory @var{dir} to the list of directories to be searched
---- a/libcpp/include/cpplib.h
-+++ b/libcpp/include/cpplib.h
-@@ -751,6 +751,9 @@ extern void cpp_set_lang (cpp_reader *,
- /* Set the include paths.  */
- extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
- 
-+/* Provide src:dst pair for __FILE__ remapping.  */
-+extern void add_cpp_remap_path (const char *);
-+
- /* Call these to get pointers to the options, callback, and deps
-    structures for a given reader.  These pointers are good until you
-    call cpp_finish on that reader.  You can either edit the callbacks
---- a/libcpp/macro.c
-+++ b/libcpp/macro.c
-@@ -224,6 +224,64 @@ static const char * const monthnames[] =
-   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- 
-+static size_t remap_pairs;
-+static char **remap_src;
-+static char **remap_dst;
-+
-+void
-+add_cpp_remap_path (const char *arg)
-+{
-+  const char *arg_dst;
-+  size_t len;
-+
-+  arg_dst = strchr(arg, ':');
-+  if (arg_dst == NULL)
-+    {
-+      fprintf(stderr, "Invalid argument for -iremap\n");
-+      exit(1);
-+    }
-+
-+  len = arg_dst - arg;
-+  ++arg_dst;
-+
-+  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
-+  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
-+
-+  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
-+  memcpy(remap_src[remap_pairs], arg, len);
-+  remap_src[remap_pairs][len] = '\0';
-+  remap_dst[remap_pairs] = xstrdup(arg_dst);
-+  ++remap_pairs;
-+}
-+
-+static const char *
-+cpp_remap_file (const char *arg, char **tmp_name)
-+{
-+  char *result;
-+  size_t i, len;
-+
-+  for (i = 0; i < remap_pairs; ++i)
-+    {
-+      len = strlen (remap_src[i]);
-+      if (strncmp (remap_src[i], arg, len))
-+	continue;
-+      if (arg[len] == '\0')
-+	return xstrdup (remap_dst[i]);
-+      if (arg[len] != '/')
-+	continue;
-+      arg += len;
-+      len = strlen (remap_dst[i]);
-+      result = (char *) xmalloc (len + strlen (arg) + 1);
-+      memcpy(result, remap_dst[i], len);
-+      strcpy(result + len, arg);
-+      *tmp_name = result;
-+
-+      return result;
-+    }
-+
-+   return arg;
-+}
-+
- /* Helper function for builtin_macro.  Returns the text generated by
-    a builtin macro. */
- const uchar *
-@@ -286,6 +344,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
-       {
- 	unsigned int len;
- 	const char *name;
-+	char *tmp_name = NULL;
- 	uchar *buf;
- 	
- 	if (node->value.builtin == BT_FILE)
-@@ -297,6 +356,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
- 	    if (!name)
- 	      abort ();
- 	  }
-+	name = cpp_remap_file (name, &tmp_name);
- 	len = strlen (name);
- 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
- 	result = buf;
-@@ -304,6 +364,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
- 	buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
- 	*buf++ = '"';
- 	*buf = '\0';
-+	free (tmp_name);
-       }
-       break;
- 
diff --git a/toolchain/gcc/patches/5.3.0/001-revert_register_mode_search.patch b/toolchain/gcc/patches/5.3.0/001-revert_register_mode_search.patch
new file mode 100644
index 0000000..06373eb
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/001-revert_register_mode_search.patch
@@ -0,0 +1,65 @@
+Revert of:
+
+commit 275035b56823b26d5fb7e90fad945b998648edf2
+Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date:   Thu Sep 5 14:09:07 2013 +0000
+
+        PR target/58139
+        * reginfo.c (choose_hard_reg_mode): Scan through all mode classes
+        looking for widest mode.
+
+
+    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
+
+
+--- a/gcc/reginfo.c
++++ b/gcc/reginfo.c
+@@ -665,35 +665,40 @@ choose_hard_reg_mode (unsigned int regno
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
++  if (found_mode != VOIDmode)
++    return found_mode;
++
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
++  if (found_mode != VOIDmode)
++    return found_mode;
++
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
++  if (found_mode != VOIDmode)
++    return found_mode;
++
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
++	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+   if (found_mode != VOIDmode)
diff --git a/toolchain/gcc/patches/5.3.0/002-case_insensitive.patch b/toolchain/gcc/patches/5.3.0/002-case_insensitive.patch
new file mode 100644
index 0000000..b3d2dbe
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/002-case_insensitive.patch
@@ -0,0 +1,14 @@
+--- a/include/filenames.h
++++ b/include/filenames.h
+@@ -43,11 +43,6 @@ extern "C" {
+ #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
+ #else /* not DOSish */
+-#  if defined(__APPLE__)
+-#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
+-#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
+-#    endif
+-#  endif /* __APPLE__ */
+ #  define HAS_DRIVE_SPEC(f) (0)
+ #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
diff --git a/toolchain/gcc/patches/5.3.0/010-documentation.patch b/toolchain/gcc/patches/5.3.0/010-documentation.patch
new file mode 100644
index 0000000..07064a9
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/010-documentation.patch
@@ -0,0 +1,23 @@
+--- a/gcc/Makefile.in
++++ b/gcc/Makefile.in
+@@ -2941,18 +2941,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
+ doc/gccint.info: $(TEXI_GCCINT_FILES)
+ doc/cppinternals.info: $(TEXI_CPPINT_FILES)
+ 
+-doc/%.info: %.texi
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
++doc/%.info:
+ 
+ # Duplicate entry to handle renaming of gccinstall.info
+-doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
++doc/gccinstall.info:
+ 
+ doc/cpp.dvi: $(TEXI_CPP_FILES)
+ doc/gcc.dvi: $(TEXI_GCC_FILES)
diff --git a/toolchain/gcc/patches/5.3.0/020-no-plt-backport.patch b/toolchain/gcc/patches/5.3.0/020-no-plt-backport.patch
new file mode 100644
index 0000000..b9702c9
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/020-no-plt-backport.patch
@@ -0,0 +1,28 @@
+--- a/gcc/calls.c
++++ b/gcc/calls.c
+@@ -225,6 +225,12 @@ prepare_call_address (tree fndecl_or_typ
+ 	       && targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
+ 	      ? force_not_mem (memory_address (FUNCTION_MODE, funexp))
+ 	      : memory_address (FUNCTION_MODE, funexp));
++  else if (flag_pic && !flag_plt && fndecl_or_type
++	   && TREE_CODE (fndecl_or_type) == FUNCTION_DECL
++	   && !targetm.binds_local_p (fndecl_or_type))
++    {
++      funexp = force_reg (Pmode, funexp);
++    }
+   else if (! sibcallp)
+     {
+ #ifndef NO_FUNCTION_CSE
+--- a/gcc/common.opt
++++ b/gcc/common.opt
+@@ -1779,6 +1779,10 @@ fpie
+ Common Report Var(flag_pie,1) Negative(fPIC)
+ Generate position-independent code for executables if possible (small mode)
+ 
++fplt
++Common Report Var(flag_plt) Init(1)
++Use PLT for PIC calls (-fno-plt: load the address from GOT at call site)
++
+ fplugin=
+ Common Joined RejectNegative Var(common_deferred_options) Defer
+ Specify a plugin to load
diff --git a/toolchain/gcc/patches/5.3.0/030-fix-arm-codegen-PR-65932.patch b/toolchain/gcc/patches/5.3.0/030-fix-arm-codegen-PR-65932.patch
new file mode 100644
index 0000000..7f0b43c
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/030-fix-arm-codegen-PR-65932.patch
@@ -0,0 +1,21 @@
+Fix from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932
+
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -628,16 +628,10 @@ extern int arm_arch_crc;
+    type, but kept valid in the wider mode.  The signedness of the
+    extension may differ from that of the type.  */
+ 
+-/* It is far faster to zero extend chars than to sign extend them */
+-
+ #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE)	\
+   if (GET_MODE_CLASS (MODE) == MODE_INT		\
+       && GET_MODE_SIZE (MODE) < 4)      	\
+     {						\
+-      if (MODE == QImode)			\
+-	UNSIGNEDP = 1;				\
+-      else if (MODE == HImode)			\
+-	UNSIGNEDP = 1;				\
+       (MODE) = SImode;				\
+     }
+ 
diff --git a/toolchain/gcc/patches/5.3.0/040-fix-mips-ICE-PR-68400.patch b/toolchain/gcc/patches/5.3.0/040-fix-mips-ICE-PR-68400.patch
new file mode 100644
index 0000000..e88af34
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/040-fix-mips-ICE-PR-68400.patch
@@ -0,0 +1,23 @@
+--- a/gcc/config/mips/mips.c
++++ b/gcc/config/mips/mips.c
+@@ -8001,9 +8001,17 @@ mask_low_and_shift_p (machine_mode mode,
+ bool
+ and_operands_ok (machine_mode mode, rtx op1, rtx op2)
+ {
+-  return (memory_operand (op1, mode)
+-	  ? and_load_operand (op2, mode)
+-	  : and_reg_operand (op2, mode));
++  if (!memory_operand (op1, mode))
++    return and_reg_operand (op2, mode);
++
++  if (!and_load_operand (op2, mode))
++    return false;
++
++  if (!TARGET_MIPS16 || si_mask_operand(op2, mode))
++    return true;
++
++  op1 = XEXP (op1, 0);
++  return !(REG_P (op1) && REGNO (op1) == STACK_POINTER_REGNUM);
+ }
+ 
+ /* The canonical form of a mask-low-and-shift-left operation is
diff --git a/toolchain/gcc/patches/5.3.0/100-uclibc-conf.patch b/toolchain/gcc/patches/5.3.0/100-uclibc-conf.patch
new file mode 100644
index 0000000..ff9ad94
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/100-uclibc-conf.patch
@@ -0,0 +1,33 @@
+--- a/contrib/regression/objs-gcc.sh
++++ b/contrib/regression/objs-gcc.sh
+@@ -106,6 +106,10 @@ if [ $H_REAL_TARGET = $H_REAL_HOST -a $H
+  then
+   make all-gdb all-dejagnu all-ld || exit 1
+   make install-gdb install-dejagnu install-ld || exit 1
++elif [ $H_REAL_TARGET = $H_REAL_HOST -a $H_REAL_TARGET = i686-pc-linux-uclibc ]
++ then
++  make all-gdb all-dejagnu all-ld || exit 1
++  make install-gdb install-dejagnu install-ld || exit 1
+ elif [ $H_REAL_TARGET = $H_REAL_HOST ] ; then
+   make bootstrap || exit 1
+   make install || exit 1
+--- a/libjava/classpath/ltconfig
++++ b/libjava/classpath/ltconfig
+@@ -603,7 +603,7 @@ host_os=`echo $host | sed 's/^\([^-]*\)-
+ 
+ # Transform linux* to *-*-linux-gnu*, to support old configure scripts.
+ case $host_os in
+-linux-gnu*) ;;
++linux-gnu*|linux-uclibc*) ;;
+ linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
+ esac
+ 
+@@ -1247,7 +1247,7 @@ linux-gnuoldld* | linux-gnuaout* | linux
+   ;;
+ 
+ # This must be Linux ELF.
+-linux-gnu*)
++linux*)
+   version_type=linux
+   need_lib_prefix=no
+   need_version=no
diff --git a/toolchain/gcc/patches/5.3.0/200-musl_config.patch b/toolchain/gcc/patches/5.3.0/200-musl_config.patch
new file mode 100644
index 0000000..836e9ab
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/200-musl_config.patch
@@ -0,0 +1,309 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 8 May 2015 08:25:47 +0000 (+0000)
+Subject: [PATCH 2/13] musl libc config
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a9173ceabaf29c16f8ef226fbf98af373a4b2ceb
+
+[PATCH 2/13] musl libc config
+
+2015-05-08  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config.gcc (LIBC_MUSL): New tm_defines macro.
+	* config/linux.h (OPTION_MUSL): Define.
+	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER32,)
+	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32,)
+	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
+	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
+	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
+	* config/linux.opt (mmusl): New option.
+	* doc/invoke.texi (GNU/Linux Options): Document -mmusl.
+	* configure.ac (gcc_cv_libc_provides_ssp): Add *-*-musl*.
+	(gcc_cv_target_dl_iterate_phdr): Add *-linux-musl*.
+	* configure: Regenerate.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222904 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -575,7 +575,7 @@ case ${target} in
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+ 
+ # 32-bit x86 processors supported by --with-arch=.  Each processor
+ # MUST be separated by exactly one space.
+@@ -720,6 +720,9 @@ case ${target} in
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
++    *-*-*musl*)
++      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -50,21 +52,25 @@ see the files COPYING3 and COPYING.RUNTI
+     } while (0)
+ 
+ /* Determine which dynamic linker to use depending on whether GLIBC or
+-   uClibc or Bionic is the default C library and whether
+-   -muclibc or -mglibc or -mbionic has been passed to change the default.  */
++   uClibc or Bionic or musl is the default C library and whether
++   -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
++   the default.  */
+ 
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+-  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
++  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+ 
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -81,24 +87,100 @@ see the files COPYING3 and COPYING.RUNTI
+ #define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
+ #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
+ #define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
++/* Should be redefined for each target that supports musl.  */
++#define MUSL_DYNAMIC_LINKER "/dev/null"
++#define MUSL_DYNAMIC_LINKER32 "/dev/null"
++#define MUSL_DYNAMIC_LINKER64 "/dev/null"
++#define MUSL_DYNAMIC_LINKERX32 "/dev/null"
+ 
+ #define GNU_USER_DYNAMIC_LINKER						\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+-			 BIONIC_DYNAMIC_LINKER)
++			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+-			 BIONIC_DYNAMIC_LINKER32)
++			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+-			 BIONIC_DYNAMIC_LINKER64)
++			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+-			 BIONIC_DYNAMIC_LINKERX32)
++			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+ 
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
+ 
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP			\
++    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
++    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
++    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS			\
++    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL			\
++    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS				\
++  {							\
++    INCLUDE_DEFAULTS_MUSL_GPP				\
++    INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    INCLUDE_DEFAULTS_MUSL_CROSS				\
++    INCLUDE_DEFAULTS_MUSL_TOOL				\
++    INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
++    { 0, 0, 0, 0, 0, 0 }				\
++  }
++#endif
++
+ #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
+ /* This is a *uclinux* target.  We don't define below macros to normal linux
+    versions, because doing so would require *uclinux* targets to include
+--- a/gcc/config/linux.opt
++++ b/gcc/config/linux.opt
+@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_l
+ Use GNU C library
+ 
+ muclibc
+-Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
++Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic)
++Use musl C library
+--- a/gcc/configure
++++ b/gcc/configure
+@@ -27802,6 +27802,9 @@ if test "${gcc_cv_libc_provides_ssp+set}
+ else
+   gcc_cv_libc_provides_ssp=no
+     case "$target" in
++       *-*-musl*)
++	 # All versions of musl provide stack protector
++	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -27834,6 +27837,7 @@ fi
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
++	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -27930,6 +27934,9 @@ case "$target" in
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
++  *-linux-musl*)
++    gcc_cv_target_dl_iterate_phdr=yes
++    ;;
+ esac
+ 
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+--- a/gcc/configure.ac
++++ b/gcc/configure.ac
+@@ -5282,6 +5282,9 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
+       gcc_cv_libc_provides_ssp,
+       [gcc_cv_libc_provides_ssp=no
+     case "$target" in
++       *-*-musl*)
++	 # All versions of musl provide stack protector
++	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -5308,6 +5311,7 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
++	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -5381,6 +5385,9 @@ case "$target" in
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
++  *-linux-musl*)
++    gcc_cv_target_dl_iterate_phdr=yes
++    ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -667,7 +667,7 @@ Objective-C and Objective-C++ Dialects}.
+ -mcpu=@var{cpu}}
+ 
+ @emph{GNU/Linux Options}
+-@gccoptlist{-mglibc -muclibc -mbionic -mandroid @gol
++@gccoptlist{-mglibc -muclibc -mmusl -mbionic -mandroid @gol
+ -tno-android-cc -tno-android-ld}
+ 
+ @emph{H8/300 Options}
+@@ -15325,13 +15325,19 @@ These @samp{-m} options are defined for
+ @item -mglibc
+ @opindex mglibc
+ Use the GNU C library.  This is the default except
+-on @samp{*-*-linux-*uclibc*} and @samp{*-*-linux-*android*} targets.
++on @samp{*-*-linux-*uclibc*}, @samp{*-*-linux-*musl*} and
++@samp{*-*-linux-*android*} targets.
+ 
+ @item -muclibc
+ @opindex muclibc
+ Use uClibc C library.  This is the default on
+ @samp{*-*-linux-*uclibc*} targets.
+ 
++@item -mmusl
++@opindex mmusl
++Use the musl C library.  This is the default on
++@samp{*-*-linux-*musl*} targets.
++
+ @item -mbionic
+ @opindex mbionic
+ Use Bionic C library.  This is the default on
diff --git a/toolchain/gcc/patches/5.3.0/201-musl_arm.patch b/toolchain/gcc/patches/5.3.0/201-musl_arm.patch
new file mode 100644
index 0000000..27a26af
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/201-musl_arm.patch
@@ -0,0 +1,43 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 27 May 2015 13:17:11 +0000 (+0000)
+Subject: [PATCH 4/13] arm musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=de799bd087ab9a179768fea75bd195a31d3432a4
+
+[PATCH 4/13] arm musl support
+
+On behalf of szabolcs.nagy@arm.com
+
+2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+	* config/arm/linux-eabi.h (MUSL_DYNAMIC_LINKER): Define.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223749 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -77,6 +77,23 @@
+     %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+     %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+ 
++/* For ARM musl currently supports four dynamic linkers:
++   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++   musl does not support the legacy OABI mode.
++   All the dynamic linkers live in /lib.
++   We default to soft-float, EL. */
++#undef  MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++  "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
diff --git a/toolchain/gcc/patches/5.3.0/202-musl_mips.patch b/toolchain/gcc/patches/5.3.0/202-musl_mips.patch
new file mode 100644
index 0000000..816dd8d
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/202-musl_mips.patch
@@ -0,0 +1,35 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 8 May 2015 15:16:50 +0000 (+0000)
+Subject: [PATCH 6/13] mips musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=2550b6a866c887472b587bef87d433c51cf1ebc8
+
+[PATCH 6/13] mips musl support
+
+2015-05-08  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/mips/linux.h (MUSL_DYNAMIC_LINKER32): Define.
+	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERN32): Define.
+	(GNU_USER_DYNAMIC_LINKERN32): Update.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222915 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/mips/linux.h
++++ b/gcc/config/mips/linux.h
+@@ -37,7 +37,13 @@ along with GCC; see the file COPYING3.
+ #define UCLIBC_DYNAMIC_LINKERN32 \
+   "%{mnan=2008:/lib32/ld-uClibc-mipsn8.so.0;:/lib32/ld-uClibc.so.0}"
+ 
++#undef MUSL_DYNAMIC_LINKER32
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-mips%{EL:el}%{msoft-float:-sf}.so.1"
++#undef MUSL_DYNAMIC_LINKER64
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-mips64%{EL:el}%{msoft-float:-sf}.so.1"
++#define MUSL_DYNAMIC_LINKERN32 "/lib/ld-musl-mipsn32%{EL:el}%{msoft-float:-sf}.so.1"
++
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-                         BIONIC_DYNAMIC_LINKERN32)
++                         BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKERN32)
diff --git a/toolchain/gcc/patches/5.3.0/203-musl_powerpc.patch b/toolchain/gcc/patches/5.3.0/203-musl_powerpc.patch
new file mode 100644
index 0000000..b4f34e8
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/203-musl_powerpc.patch
@@ -0,0 +1,209 @@
+
+gcc/Changelog:
+
+2015-04-24  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config.gcc (secure_plt): Add *-linux*-musl*.
+	* config/rs6000/linux64.h (MUSL_DYNAMIC_LINKER32): Define.
+	(MUSL_DYNAMIC_LINKER64): Define.
+	(GNU_USER_DYNAMIC_LINKER32): Update.
+	(GNU_USER_DYNAMIC_LINKER64): Update.
+	(CHOOSE_DYNAMIC_LINKER): Update.
+
+	* config/rs6000/secureplt.h (LINK_SECURE_PLT_DEFAULT_SPEC): Define.
+	* config/rs6000/sysv4.h (GNU_USER_DYNAMIC_LINKER): Update.
+	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER_E,)
+	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
+	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
+	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
+	(LINK_SECURE_PLT_DEFAULT_SPEC): Define.
+	(CHOOSE_DYNAMIC_LINKER, LINK_TARGET_SPEC, LINK_OS_LINUX_SPEC): Update.
+
+	* config/rs6000/sysv4le.h (MUSL_DYNAMIC_LINKER_E): Define.
+
+--- a/gcc/config/rs6000/linux64.h
++++ b/gcc/config/rs6000/linux64.h
+@@ -365,17 +365,21 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E ".so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ 
+ #undef  DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+--- a/gcc/config/rs6000/secureplt.h
++++ b/gcc/config/rs6000/secureplt.h
+@@ -18,3 +18,4 @@ along with GCC; see the file COPYING3.
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+--- a/gcc/config/rs6000/sysv4.h
++++ b/gcc/config/rs6000/sysv4.h
+@@ -537,6 +537,9 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+ 
+ /* Pass -G xxx to the compiler.  */
+ #undef CC1_SPEC
+@@ -574,7 +577,8 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ %{R*} \
+ %(link_shlib) \
+ %{!T*: %(link_start) } \
+-%(link_os)"
++%(link_os)" \
++"%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+ 
+ /* Shared libraries are not default.  */
+ #define LINK_SHLIB_SPEC "\
+@@ -757,17 +761,22 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define LINK_START_LINUX_SPEC ""
+ 
++#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","")
++
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ 
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+@@ -889,6 +898,7 @@ ncrtn.o%s"
+   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
+   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
+   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
++  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
+   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
+   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
+   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
+@@ -943,3 +953,72 @@ ncrtn.o%s"
+ /* This target uses the sysv4.opt file.  */
+ #define TARGET_USES_SYSV4_OPT 1
+ 
++/* Include order changes for musl, same as in generic linux.h.  */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP			\
++    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
++    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
++    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
++      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
++    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS			\
++    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL			\
++    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
++    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS				\
++  {							\
++    INCLUDE_DEFAULTS_MUSL_GPP				\
++    INCLUDE_DEFAULTS_MUSL_PREFIX			\
++    INCLUDE_DEFAULTS_MUSL_CROSS				\
++    INCLUDE_DEFAULTS_MUSL_TOOL				\
++    INCLUDE_DEFAULTS_MUSL_NATIVE			\
++    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
++    { 0, 0, 0, 0, 0, 0 }				\
++  }
++#endif
+--- a/gcc/config/rs6000/sysv4le.h
++++ b/gcc/config/rs6000/sysv4le.h
+@@ -31,3 +31,5 @@
+ /* Little-endian PowerPC64 Linux uses the ELF v2 ABI by default.  */
+ #define LINUX64_DEFAULT_ABI_ELFv2
+ 
++#undef MUSL_DYNAMIC_LINKER_E
++#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","le")
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -2416,6 +2416,10 @@ powerpc*-*-linux*)
+ 	    powerpc*-*-linux*paired*)
+ 		tm_file="${tm_file} rs6000/750cl.h" ;;
+ 	esac
++	case ${target} in
++		*-linux*-musl*)
++			enable_secureplt=yes ;;
++	esac
+ 	if test x${enable_secureplt} = xyes; then
+ 		tm_file="rs6000/secureplt.h ${tm_file}"
+ 	fi
diff --git a/toolchain/gcc/patches/5.3.0/204-musl_sh.patch b/toolchain/gcc/patches/5.3.0/204-musl_sh.patch
new file mode 100644
index 0000000..8c3753d
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/204-musl_sh.patch
@@ -0,0 +1,39 @@
+gcc/Changelog:
+
+2015-04-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/sh/linux.h (MUSL_DYNAMIC_LINKER): Define.
+	(MUSL_DYNAMIC_LINKER_E, MUSL_DYNAMIC_LINKER_FP): Define.
+
+--- a/gcc/config/sh/linux.h
++++ b/gcc/config/sh/linux.h
+@@ -43,6 +43,28 @@ along with GCC; see the file COPYING3.
+ 
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+ 
++#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
++#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
++#endif
++
++#if TARGET_CPU_DEFAULT & ( MASK_HARD_SH2A_DOUBLE | MASK_SH4 )
++/* "-nofpu" if any nofpu option is specified */
++#define MUSL_DYNAMIC_LINKER_FP \
++  "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
++  "m4-340|m4-400|m4-500|m4al|m5-32media-nofpu|m5-64media-nofpu|" \
++  "m5-compact-nofpu:-nofpu}"
++#else
++/* "-nofpu" if none of the hard fpu options are specified */
++#define MUSL_DYNAMIC_LINKER_FP \
++  "%{m2a|m4|m4-100|m4-200|m4-300|m4a|m5-32media|m5-64media|m5-compact:;:-nofpu}"
++#endif
++
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER \
++  "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP ".so.1"
++
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
diff --git a/toolchain/gcc/patches/5.3.0/205-musl_x86.patch b/toolchain/gcc/patches/5.3.0/205-musl_x86.patch
new file mode 100644
index 0000000..8772328
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/205-musl_x86.patch
@@ -0,0 +1,41 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 15 May 2015 13:20:01 +0000 (+0000)
+Subject: [PATCH 9/13] x86 musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=5551c8d927c17f60837f15f8dfe46f945ba3fa9c
+
+[PATCH 9/13] x86 musl support
+
+On behalf of Szabolcs Nagy.
+
+2015-05-15  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+	* config/i386/linux.h (MUSL_DYNAMIC_LINKER): Define.
+	* config/i386/linux64.h (MUSL_DYNAMIC_LINKER32): Define.
+	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32): Define.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223218 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/i386/linux.h
++++ b/gcc/config/i386/linux.h
+@@ -21,3 +21,6 @@ along with GCC; see the file COPYING3.
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+--- a/gcc/config/i386/linux64.h
++++ b/gcc/config/i386/linux64.h
+@@ -30,3 +30,10 @@ see the files COPYING3 and COPYING.RUNTI
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#undef MUSL_DYNAMIC_LINKER32
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#undef MUSL_DYNAMIC_LINKER64
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#undef MUSL_DYNAMIC_LINKERX32
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
diff --git a/toolchain/gcc/patches/5.3.0/206-musl_aarch64.patch b/toolchain/gcc/patches/5.3.0/206-musl_aarch64.patch
new file mode 100644
index 0000000..6925a02
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/206-musl_aarch64.patch
@@ -0,0 +1,31 @@
+From: jgreenhalgh <jgreenhalgh@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 27 May 2015 16:46:39 +0000 (+0000)
+Subject: [PATCH 3/13] aarch64 musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=b3ff21cf0531be91bc3fb8200296a7633090ec78
+
+[PATCH 3/13] aarch64 musl support
+
+gcc/Changelog:
+
+2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/aarch64/aarch64-linux.h (MUSL_DYNAMIC_LINKER): Define.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223766 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/aarch64/aarch64-linux.h
++++ b/gcc/config/aarch64/aarch64-linux.h
+@@ -23,6 +23,9 @@
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+ 
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
++
+ #undef  ASAN_CC1_SPEC
+ #define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
+ 
diff --git a/toolchain/gcc/patches/5.3.0/207-musl_fixincludes.patch b/toolchain/gcc/patches/5.3.0/207-musl_fixincludes.patch
new file mode 100644
index 0000000..0ff33d3
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/207-musl_fixincludes.patch
@@ -0,0 +1,30 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:18:16 +0000 (+0000)
+Subject: fixincludes update for musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=2dc727de2e87c2756a514cbb43cea23c99deaa3d
+
+fixincludes update for musl support
+
+On behalf of Szabolcs.Nagy@arm.com
+
+2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+	* mkfixinc.sh: Add *-musl* with no fixes.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222327 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/fixincludes/mkfixinc.sh
++++ b/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     powerpc-*-eabi*    | \
+     powerpc-*-rtems*   | \
+     powerpcle-*-eabisim* | \
+-    powerpcle-*-eabi* )
++    powerpcle-*-eabi* | \
++    *-musl* )
+ 	#  IF there is no include fixing,
+ 	#  THEN create a no-op fixer and exit
+ 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
diff --git a/toolchain/gcc/patches/5.3.0/209-musl_libstdc++.patch b/toolchain/gcc/patches/5.3.0/209-musl_libstdc++.patch
new file mode 100644
index 0000000..d2414d0
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/209-musl_libstdc++.patch
@@ -0,0 +1,72 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:24:11 +0000 (+0000)
+Subject: libstdc++, libgfortran gthr workaround for musl
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=1e5f711c11cb80ce609db9e9c1d8b2da0f7b5b61
+
+libstdc++, libgfortran gthr workaround for musl
+
+On behalf of szabolcs.nagy@arm.com
+
+[libstdc++-v3/]
+2015-04-22  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/os/generic/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK): Define.
+	* configure.host (os_include_dir): Set to "os/generic" for linux-musl*.
+
+[libgfortran/]
+2015-04-22  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* acinclude.m4 (GTHREAD_USE_WEAK): Define as 0 for *-*-musl*.
+	* configure: Regenerate.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222329 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/libgfortran/acinclude.m4
++++ b/libgfortran/acinclude.m4
+@@ -100,7 +100,7 @@ void foo (void);
+ 	      [Define to 1 if the target supports #pragma weak])
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
++    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+       AC_DEFINE(GTHREAD_USE_WEAK, 0,
+ 		[Define to 0 if the target shouldn't use #pragma weak])
+       ;;
+--- a/libgfortran/configure
++++ b/libgfortran/configure
+@@ -26456,7 +26456,7 @@ $as_echo "#define SUPPORTS_WEAK 1" >>con
+ 
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
++    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+ 
+ $as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h
+ 
+--- a/libstdc++-v3/config/os/generic/os_defines.h
++++ b/libstdc++-v3/config/os/generic/os_defines.h
+@@ -33,4 +33,9 @@
+ // System-specific #define, typedefs, corrections, etc, go here.  This
+ // file will come before all others.
+ 
++// Disable the weak reference logic in gthr.h for os/generic because it
++// is broken on every platform unless there is implementation specific
++// workaround in gthr-posix.h and at link-time for static linking.
++#define _GLIBCXX_GTHREAD_USE_WEAK 0
++
+ #endif
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -273,6 +273,9 @@ case "${host_os}" in
+   freebsd*)
+     os_include_dir="os/bsd/freebsd"
+     ;;
++  linux-musl*)
++    os_include_dir="os/generic"
++    ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
diff --git a/toolchain/gcc/patches/5.3.0/230-musl_libssp.patch b/toolchain/gcc/patches/5.3.0/230-musl_libssp.patch
new file mode 100644
index 0000000..30f42e9
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/230-musl_libssp.patch
@@ -0,0 +1,13 @@
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -727,7 +727,9 @@ proper position among the other output f
+ #endif
+ 
+ #ifndef LINK_SSP_SPEC
+-#ifdef TARGET_LIBC_PROVIDES_SSP
++#if DEFAULT_LIBC == LIBC_MUSL
++#define LINK_SSP_SPEC "-lssp_nonshared"
++#elif defined(TARGET_LIBC_PROVIDES_SSP)
+ #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+ 		       "|fstack-protector-strong|fstack-protector-explicit:}"
+ #else
diff --git a/toolchain/gcc/patches/5.3.0/240-musl-libitm-fixes.patch b/toolchain/gcc/patches/5.3.0/240-musl-libitm-fixes.patch
new file mode 100644
index 0000000..533cb68
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/240-musl-libitm-fixes.patch
@@ -0,0 +1,61 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:11:25 +0000 (+0000)
+Subject: libitm fixes for musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=e53a4d49c3d03ab8eaddb073cf972c1c46d75338
+
+libitm fixes for musl support
+
+On behalf of Szabolcs.Nagy@arm.com
+
+2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+       * config/arm/hwcap.cc: Use fcntl.h instead of sys/fcntl.h.
+       * config/linux/x86/tls.h: Only use __GLIBC_PREREQ if defined.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222325 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/libitm/config/arm/hwcap.cc
++++ b/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,7 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
+-#include <sys/fcntl.h>
++#include <fcntl.h>
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+--- a/libitm/config/linux/x86/tls.h
++++ b/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+ 
+ #endif // LIBITM_X86_TLS_H
diff --git a/toolchain/gcc/patches/5.3.0/250-add-musl.patch b/toolchain/gcc/patches/5.3.0/250-add-musl.patch
new file mode 100644
index 0000000..8cbedde
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/250-add-musl.patch
@@ -0,0 +1,120 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 8 May 2015 08:30:40 +0000 (+0000)
+Subject: [PATCH 0/13] Add musl support to GCC
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=f2d678afa5b8385d763b93772d73d6bf80a9739e
+
+[PATCH 0/13] Add musl support to GCC
+
+2015-05-08  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/glibc-stdint.h (OPTION_MUSL): Define.
+	(INT_FAST16_TYPE, INT_FAST32_TYPE, UINT_FAST16_TYPE, UINT_FAST32_TYPE):
+	Change the definition based on OPTION_MUSL for 64 bit targets.
+	* config/linux.h (OPTION_MUSL): Redefine.
+	* config/alpha/linux.h (OPTION_MUSL): Redefine.
+	* config/rs6000/linux.h (OPTION_MUSL): Redefine.
+	* config/rs6000/linux64.h (OPTION_MUSL): Redefine.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222905 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/alpha/linux.h
++++ b/gcc/config/alpha/linux.h
+@@ -61,10 +61,14 @@ along with GCC; see the file COPYING3.
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#undef OPTION_MUSL
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#undef OPTION_MUSL
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+--- a/gcc/config/glibc-stdint.h
++++ b/gcc/config/glibc-stdint.h
+@@ -22,6 +22,12 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
++/* Systems using musl libc should use this header and make sure
++   OPTION_MUSL is defined correctly before using the TYPE macros. */
++#ifndef OPTION_MUSL
++#define OPTION_MUSL 0
++#endif
++
+ #define SIG_ATOMIC_TYPE "int"
+ 
+ #define INT8_TYPE "signed char"
+@@ -43,12 +49,12 @@ see the files COPYING3 and COPYING.RUNTI
+ #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
+ 
+ #define INT_FAST8_TYPE "signed char"
+-#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+-#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
++#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
++#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
+ #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
+ #define UINT_FAST8_TYPE "unsigned char"
+-#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
+-#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
++#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
++#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
+ #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
+ 
+ #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -32,11 +32,13 @@ see the files COPYING3 and COPYING.RUNTI
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#undef OPTION_MUSL
+ #define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#undef OPTION_MUSL
+ #define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+--- a/gcc/config/rs6000/linux.h
++++ b/gcc/config/rs6000/linux.h
+@@ -30,10 +30,14 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#undef OPTION_MUSL
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#undef OPTION_MUSL
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+--- a/gcc/config/rs6000/linux64.h
++++ b/gcc/config/rs6000/linux64.h
+@@ -299,10 +299,14 @@ extern int dot_symbols;
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#undef OPTION_MUSL
++#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#undef OPTION_MUSL
++#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
diff --git a/toolchain/gcc/patches/5.3.0/260-musl-add-unwind-fix.patch b/toolchain/gcc/patches/5.3.0/260-musl-add-unwind-fix.patch
new file mode 100644
index 0000000..a3b83e2
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/260-musl-add-unwind-fix.patch
@@ -0,0 +1,34 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:20:01 +0000 (+0000)
+Subject: unwind fix for musl
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a2e31d0681d8a47389b8a3552622fbd9827bcef4
+
+unwind fix for musl
+
+On behalf of szabolcs.nagy@arm.com
+
+2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* unwind-dw2-fde-dip.c (USE_PT_GNU_EH_FRAME): Define it on
+	Linux if target provides dl_iterate_phdr.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222328 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/libgcc/unwind-dw2-fde-dip.c
++++ b/libgcc/unwind-dw2-fde-dip.c
+@@ -59,6 +59,12 @@
+ 
+ #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+     && defined(TARGET_DL_ITERATE_PHDR) \
++    && defined(__linux__)
++# define USE_PT_GNU_EH_FRAME
++#endif
++
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
++    && defined(TARGET_DL_ITERATE_PHDR) \
+     && (defined(__DragonFly__) || defined(__FreeBSD__))
+ # define ElfW __ElfN
+ # define USE_PT_GNU_EH_FRAME
diff --git a/toolchain/gcc/patches/5.3.0/270-musl-add-powerpc-softfloat-fix.patch b/toolchain/gcc/patches/5.3.0/270-musl-add-powerpc-softfloat-fix.patch
new file mode 100644
index 0000000..bdebf6c
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/270-musl-add-powerpc-softfloat-fix.patch
@@ -0,0 +1,24 @@
+--- a/gcc/config/rs6000/linux64.h
++++ b/gcc/config/rs6000/linux64.h
+@@ -369,8 +369,8 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+-#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
+-#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+ #define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+--- a/gcc/config/rs6000/sysv4.h
++++ b/gcc/config/rs6000/sysv4.h
+@@ -765,7 +765,7 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+-#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+ #define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_MUSL
diff --git a/toolchain/gcc/patches/5.3.0/800-arm_v5te_no_ldrd_strd.patch b/toolchain/gcc/patches/5.3.0/800-arm_v5te_no_ldrd_strd.patch
new file mode 100644
index 0000000..0edeb13
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/800-arm_v5te_no_ldrd_strd.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -285,7 +285,7 @@ extern void (*arm_lang_output_object_att
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
++#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
diff --git a/toolchain/gcc/patches/5.3.0/810-arm-softfloat-libgcc.patch b/toolchain/gcc/patches/5.3.0/810-arm-softfloat-libgcc.patch
new file mode 100644
index 0000000..1d06f5b
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,25 @@
+--- a/libgcc/config/arm/t-linux
++++ b/libgcc/config/arm/t-linux
+@@ -1,6 +1,10 @@
+ LIB1ASMSRC = arm/lib1funcs.S
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
+-	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
++	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
++	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
++	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
++	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
++	_arm_fixsfsi _arm_fixunssfsi
+ 
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference.
+--- a/gcc/config/arm/linux-elf.h
++++ b/gcc/config/arm/linux-elf.h
+@@ -60,8 +60,6 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
+-
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*} \
diff --git a/toolchain/gcc/patches/5.3.0/820-libgcc_pic.patch b/toolchain/gcc/patches/5.3.0/820-libgcc_pic.patch
new file mode 100644
index 0000000..42bf0c8
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/820-libgcc_pic.patch
@@ -0,0 +1,36 @@
+--- a/libgcc/Makefile.in
++++ b/libgcc/Makefile.in
+@@ -887,11 +887,12 @@ $(libgcov-driver-objects): %$(objext): $
+ 
+ # Static libraries.
+ libgcc.a: $(libgcc-objects)
++libgcc_pic.a: $(libgcc-s-objects)
+ libgcov.a: $(libgcov-objects)
+ libunwind.a: $(libunwind-objects)
+ libgcc_eh.a: $(libgcc-eh-objects)
+ 
+-libgcc.a libgcov.a libunwind.a libgcc_eh.a:
++libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
+ 	-rm -f $@
+ 
+ 	objects="$(objects)";					\
+@@ -913,7 +914,7 @@ libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_E
+ endif
+ 
+ ifeq ($(enable_shared),yes)
+-all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
++all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
+ ifneq ($(LIBUNWIND),)
+ all: libunwind$(SHLIB_EXT)
+ endif
+@@ -1108,6 +1109,10 @@ install-shared:
+ 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 
++	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
++	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
++	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
++
+ 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
+ 		@shlib_base_name@,libgcc_s,$(subst \
+ 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
diff --git a/toolchain/gcc/patches/5.3.0/830-arm_unbreak_armv4t.patch b/toolchain/gcc/patches/5.3.0/830-arm_unbreak_armv4t.patch
new file mode 100644
index 0000000..37f8f2a
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/830-arm_unbreak_armv4t.patch
@@ -0,0 +1,13 @@
+http://sourceware.org/ml/crossgcc/2008-05/msg00009.html
+
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -45,7 +45,7 @@
+    The ARM10TDMI core is the default for armv5t, so set
+    SUBTARGET_CPU_DEFAULT to achieve this.  */
+ #undef  SUBTARGET_CPU_DEFAULT
+-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
++#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
+ 
+ /* TARGET_BIG_ENDIAN_DEFAULT is set in
+    config.gcc for big endian configurations.  */
diff --git a/toolchain/gcc/patches/5.3.0/840-armv4_pass_fix-v4bx_to_ld.patch b/toolchain/gcc/patches/5.3.0/840-armv4_pass_fix-v4bx_to_ld.patch
new file mode 100644
index 0000000..cb1fb98
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/840-armv4_pass_fix-v4bx_to_ld.patch
@@ -0,0 +1,19 @@
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -94,10 +94,15 @@
+ #define MUSL_DYNAMIC_LINKER \
+   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+ 
++/* For armv4 we pass --fix-v4bx to linker to support EABI */
++#undef TARGET_FIX_V4BX_SPEC
++#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
++  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+-#define LINK_SPEC EABI_LINK_SPEC					\
++#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
+   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
+ 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+ 
diff --git a/toolchain/gcc/patches/5.3.0/850-use_shared_libgcc.patch b/toolchain/gcc/patches/5.3.0/850-use_shared_libgcc.patch
new file mode 100644
index 0000000..5818cf4
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/850-use_shared_libgcc.patch
@@ -0,0 +1,47 @@
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -131,10 +131,6 @@
+ #define ENDFILE_SPEC \
+   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
+ 
+-/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
+-   do not use -lfloat.  */
+-#undef LIBGCC_SPEC
+-
+ /* Clear the instruction cache from `beg' to `end'.  This is
+    implemented in lib1funcs.S, so ensure an error if this definition
+    is used.  */
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
+ 	builtin_assert ("system=posix");			\
+     } while (0)
+ 
++#ifndef LIBGCC_SPEC
++#define LIBGCC_SPEC "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
++#endif
++
+ /* Determine which dynamic linker to use depending on whether GLIBC or
+    uClibc or Bionic or musl is the default C library and whether
+    -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
+--- a/libgcc/mkmap-symver.awk
++++ b/libgcc/mkmap-symver.awk
+@@ -132,5 +132,5 @@ function output(lib) {
+   else if (inherit[lib])
+     printf("} %s;\n", inherit[lib]);
+   else
+-    printf ("\n  local:\n\t*;\n};\n");
++    printf ("\n\t*;\n};\n");
+ }
+--- a/gcc/config/rs6000/linux.h
++++ b/gcc/config/rs6000/linux.h
+@@ -60,6 +60,9 @@
+ #undef	CPP_OS_DEFAULT_SPEC
+ #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
+ 
++#undef LIBGCC_SPEC
++#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
++
+ #undef  LINK_SHLIB_SPEC
+ #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
+ 
diff --git a/toolchain/gcc/patches/5.3.0/851-libgcc_no_compat.patch b/toolchain/gcc/patches/5.3.0/851-libgcc_no_compat.patch
new file mode 100644
index 0000000..80c3476
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/851-libgcc_no_compat.patch
@@ -0,0 +1,12 @@
+--- a/libgcc/config/t-libunwind
++++ b/libgcc/config/t-libunwind
+@@ -2,8 +2,7 @@
+ 
+ HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
+ 
+-LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
+-  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
++LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ 
+ # Override the default value from t-slibgcc-elf-ver and mention -lunwind
diff --git a/toolchain/gcc/patches/5.3.0/870-ppc_no_crtsavres.patch b/toolchain/gcc/patches/5.3.0/870-ppc_no_crtsavres.patch
new file mode 100644
index 0000000..ac56154
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/870-ppc_no_crtsavres.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/rs6000/rs6000.c
++++ b/gcc/config/rs6000/rs6000.c
+@@ -21495,7 +21495,7 @@ rs6000_savres_strategy (rs6000_stack_t *
+   /* Define cutoff for using out-of-line functions to save registers.  */
+   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
+     {
+-      if (!optimize_size)
++      if (1)
+ 	{
+ 	  strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
+ 	  strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
diff --git a/toolchain/gcc/patches/5.3.0/880-no_java_section.patch b/toolchain/gcc/patches/5.3.0/880-no_java_section.patch
new file mode 100644
index 0000000..def6c9f
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/880-no_java_section.patch
@@ -0,0 +1,11 @@
+--- a/gcc/defaults.h
++++ b/gcc/defaults.h
+@@ -380,7 +380,7 @@ see the files COPYING3 and COPYING.RUNTI
+ /* If we have named section and we support weak symbols, then use the
+    .jcr section for recording java classes which need to be registered
+    at program start-up time.  */
+-#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
++#if 0 && defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
+ #ifndef JCR_SECTION_NAME
+ #define JCR_SECTION_NAME ".jcr"
+ #endif
diff --git a/toolchain/gcc/patches/5.3.0/900-bad-mips16-crt.patch b/toolchain/gcc/patches/5.3.0/900-bad-mips16-crt.patch
new file mode 100644
index 0000000..dd6e9dc
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/900-bad-mips16-crt.patch
@@ -0,0 +1,9 @@
+--- a/libgcc/config/mips/t-mips16
++++ b/libgcc/config/mips/t-mips16
+@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
+ 
+ # Version these symbols if building libgcc.so.
+ SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
++
++CRTSTUFF_T_CFLAGS += -mno-mips16
++CRTSTUFF_T_CFLAGS_S += -mno-mips16
diff --git a/toolchain/gcc/patches/5.3.0/910-mbsd_multi.patch b/toolchain/gcc/patches/5.3.0/910-mbsd_multi.patch
new file mode 100644
index 0000000..667cd96
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/910-mbsd_multi.patch
@@ -0,0 +1,222 @@
+
+	This patch brings over a few features from MirBSD:
+	* -fhonour-copts
+	  If this option is not given, it's warned (depending
+	  on environment variables). This is to catch errors
+	  of misbuilt packages which override CFLAGS themselves.
+	* -Werror-maybe-reset
+	  Has the effect of -Wno-error if GCC_NO_WERROR is
+	  set and not '0', a no-operation otherwise. This is
+	  to be able to use -Werror in "make" but prevent
+	  GNU autoconf generated configure scripts from
+	  freaking out.
+
+	This patch was authored by Thorsten Glaser <tg at mirbsd.de>
+	with copyright assignment to the FSF in effect.
+
+--- a/gcc/c-family/c-opts.c
++++ b/gcc/c-family/c-opts.c
+@@ -122,6 +122,9 @@ static int class_dump_flags;
+ /* Whether any standard preincluded header has been preincluded.  */
+ static bool done_preinclude;
+ 
++/* Check if a port honours COPTS.  */
++static int honour_copts = 0;
++
+ static void handle_OPT_d (const char *);
+ static void set_std_cxx98 (int);
+ static void set_std_cxx11 (int);
+@@ -449,6 +452,12 @@ c_common_handle_option (size_t scode, co
+       flag_no_builtin = !value;
+       break;
+ 
++    case OPT_fhonour_copts:
++      if (c_language == clk_c) {
++        honour_copts++;
++      }
++      break;
++
+     case OPT_fconstant_string_class_:
+       constant_string_class_name = arg;
+       break;
+@@ -1034,6 +1043,47 @@ c_common_init (void)
+       return false;
+     }
+ 
++  if (c_language == clk_c) {
++    char *ev = getenv ("GCC_HONOUR_COPTS");
++    int evv;
++    if (ev == NULL)
++      evv = -1;
++    else if ((*ev == '0') || (*ev == '\0'))
++      evv = 0;
++    else if (*ev == '1')
++      evv = 1;
++    else if (*ev == '2')
++      evv = 2;
++    else if (*ev == 's')
++      evv = -1;
++    else {
++      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
++      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
++    }
++    if (evv == 1) {
++      if (honour_copts == 0) {
++        error ("someone does not honour COPTS at all in lenient mode");
++        return false;
++      } else if (honour_copts != 1) {
++        warning (0, "someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++      }
++    } else if (evv == 2) {
++      if (honour_copts == 0) {
++        error ("someone does not honour COPTS at all in strict mode");
++        return false;
++      } else if (honour_copts != 1) {
++        error ("someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++        return false;
++      }
++    } else if (evv == 0) {
++      if (honour_copts != 1)
++        inform (0, "someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++    }
++  }
++
+   return true;
+ }
+ 
+--- a/gcc/c-family/c.opt
++++ b/gcc/c-family/c.opt
+@@ -431,6 +431,10 @@ Wfloat-conversion
+ C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
+ Warn for implicit type conversions that cause loss of floating point precision
+ 
++Werror-maybe-reset
++C ObjC C++ ObjC++
++; Documented in common.opt
++
+ Wfloat-equal
+ C ObjC C++ ObjC++ Var(warn_float_equal) Warning
+ Warn if testing floating point numbers for equality
+@@ -1161,6 +1165,9 @@ C++ ObjC++ Optimization Alias(fexception
+ fhonor-std
+ C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+ 
++fhonour-copts
++C ObjC C++ ObjC++ RejectNegative
++
+ fhosted
+ C ObjC
+ Assume normal C execution environment
+--- a/gcc/common.opt
++++ b/gcc/common.opt
+@@ -561,6 +561,10 @@ Werror=
+ Common Joined
+ Treat specified warning as error
+ 
++Werror-maybe-reset
++Common
++If environment variable GCC_NO_WERROR is set, act as -Wno-error
++
+ Wextra
+ Common Var(extra_warnings) Warning
+ Print extra (possibly unwanted) warnings
+@@ -1360,6 +1364,9 @@ fguess-branch-probability
+ Common Report Var(flag_guess_branch_prob) Optimization
+ Enable guessing of branch probabilities
+ 
++fhonour-copts
++Common RejectNegative
++
+ ; Nonzero means ignore `#ident' directives.  0 means handle them.
+ ; Generate position-independent code for executables if possible
+ ; On SVR4 targets, it also controls whether or not to emit a
+--- a/gcc/opts.c
++++ b/gcc/opts.c
+@@ -1699,6 +1699,17 @@ common_handle_option (struct gcc_options
+ 			       opts, opts_set, loc, dc);
+       break;
+ 
++    case OPT_Werror_maybe_reset:
++      {
++        char *ev = getenv ("GCC_NO_WERROR");
++        if ((ev != NULL) && (*ev != '0'))
++          warnings_are_errors = 0;
++      }
++      break;
++
++    case OPT_fhonour_copts:
++      break;
++
+     case OPT_Wlarger_than_:
+       opts->x_larger_than_size = value;
+       opts->x_warn_larger_than = value != -1;
+--- a/gcc/doc/cppopts.texi
++++ b/gcc/doc/cppopts.texi
+@@ -163,6 +163,11 @@ in older programs.  This warning is on b
+ Make all warnings into hard errors.  Source code which triggers warnings
+ will be rejected.
+ 
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
+ @item -Wsystem-headers
+ @opindex Wsystem-headers
+ Issue warnings for code in system headers.  These are normally unhelpful
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -251,7 +251,7 @@ Objective-C and Objective-C++ Dialects}.
+ -Wdisabled-optimization @gol
+ -Wno-discarded-qualifiers -Wno-discarded-array-qualifiers @gol
+ -Wno-div-by-zero -Wdouble-promotion -Wempty-body  -Wenum-compare @gol
+--Wno-endif-labels -Werror  -Werror=* @gol
++-Wno-endif-labels -Werror  -Werror=* -Werror-maybe-reset @gol
+ -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 @gol
+ -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
+ -Wformat-security  -Wformat-signedness  -Wformat-y2k @gol
+@@ -5371,6 +5371,22 @@ This option is only supported for C and
+ @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
+ @option{-Wno-pointer-sign}.
+ 
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
++ at item -fhonour-copts
++ at opindex fhonour-copts
++If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
++given at least once, and warn if it is given more than once.
++If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
++given exactly once.
++If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
++is not given exactly once.
++The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
++This flag and environment variable only affect the C language.
++
+ @item -Wstack-protector
+ @opindex Wstack-protector
+ @opindex Wno-stack-protector
+@@ -7845,7 +7861,7 @@ so, the first branch is redirected to ei
+ second branch or a point immediately following it, depending on whether
+ the condition is known to be true or false.
+ 
+-Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
++Enabled at levels @option{-O3}.
+ 
+ @item -fsplit-wide-types
+ @opindex fsplit-wide-types
+--- a/gcc/java/jvspec.c
++++ b/gcc/java/jvspec.c
+@@ -629,6 +629,7 @@ lang_specific_pre_link (void)
+      class name.  Append dummy `.c' that can be stripped by set_input so %b
+      is correct.  */ 
+   set_input (concat (main_class_name, "main.c", NULL));
++  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
+   err = do_spec (jvgenmain_spec);
+   if (err == 0)
+     {
diff --git a/toolchain/gcc/patches/5.3.0/920-specs_nonfatal_getenv.patch b/toolchain/gcc/patches/5.3.0/920-specs_nonfatal_getenv.patch
new file mode 100644
index 0000000..3d708f2
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/920-specs_nonfatal_getenv.patch
@@ -0,0 +1,15 @@
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -8807,8 +8807,10 @@ getenv_spec_function (int argc, const ch
+ 
+   value = getenv (argv[0]);
+   if (!value)
+-    fatal_error (input_location,
+-		 "environment variable %qs not defined", argv[0]);
++    {
++      warning (input_location, "environment variable %qs not defined", argv[0]);
++      value = "";
++    }
+ 
+   /* We have to escape every character of the environment variable so
+      they are not interpreted as active spec characters.  A
diff --git a/toolchain/gcc/patches/5.3.0/930-fix-mips-noexecstack.patch b/toolchain/gcc/patches/5.3.0/930-fix-mips-noexecstack.patch
new file mode 100644
index 0000000..c05844d
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/930-fix-mips-noexecstack.patch
@@ -0,0 +1,111 @@
+From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
+From: Andrew McDonnell <bugs@andrewmcdonnell.net>
+Date: Fri, 3 Oct 2014 19:09:00 +0930
+Subject: Add .note.GNU-stack section
+
+See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
+Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
+
+Re: [Patch, MIPS] Add .note.GNU-stack section
+
+    From: Steve Ellcey <sellcey at mips dot com>
+
+On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
+>
+>
+> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
+
+>         This works except you did not update the assembly files in
+>         libgcc or glibc. We (Cavium) have the same patch in our tree
+>         for a few released versions.
+
+> Mind just checking yours in then Andrew?
+
+> Thanks!
+> -eric
+
+I talked to Andrew about what files he changed in GCC and created and
+tested this new patch.  Andrew also mentioned changing some assembly
+files in glibc but I don't see any use of '.section .note.GNU-stack' in
+any assembly files in glibc (for any platform) so I wasn't planning on
+creating a glibc to add them to mips glibc assembly language files.
+
+OK to check in this patch?
+
+Steve Ellcey
+sellcey@mips.com
+
+
+
+2014-09-26  Steve Ellcey  <sellcey@mips.com>
+---
+ gcc/config/mips/mips.c          | 3 +++
+ libgcc/config/mips/crti.S       | 4 ++++
+ libgcc/config/mips/crtn.S       | 3 +++
+ libgcc/config/mips/mips16.S     | 4 ++++
+ libgcc/config/mips/vr4120-div.S | 4 ++++
+ 5 files changed, 18 insertions(+)
+
+--- a/gcc/config/mips/mips.c
++++ b/gcc/config/mips/mips.c
+@@ -19629,6 +19629,9 @@ mips_lra_p (void)
+ #undef TARGET_LRA_P
+ #define TARGET_LRA_P mips_lra_p
+ 
++#undef TARGET_ASM_FILE_END
++#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
++
+ struct gcc_target targetm = TARGET_INITIALIZER;
+ 
+ #include "gt-mips.h"
+--- a/libgcc/config/mips/crti.S
++++ b/libgcc/config/mips/crti.S
+@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
++
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/crtn.S
++++ b/libgcc/config/mips/crtn.S
+@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/mips16.S
++++ b/libgcc/config/mips/mips16.S
+@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
+    values using the soft-float calling convention, but do the actual
+    operation using the hard floating point instructions.  */
+ 
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++	.previous
++
+ #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
+ 
+ /* This file contains 32-bit assembly code.  */
+--- a/libgcc/config/mips/vr4120-div.S
++++ b/libgcc/config/mips/vr4120-div.S
+@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
+    -mfix-vr4120.  div and ddiv do not give the correct result when one
+    of the operands is negative.  */
+ 
++/* An executable stack is *not* required for these functions.  */
++	.section .note.GNU-stack,"",%progbits
++	.previous
++
+ 	.set	nomips16
+ 
+ #define DIV								\
diff --git a/toolchain/gcc/patches/5.3.0/940-no-clobber-stamp-bits.patch b/toolchain/gcc/patches/5.3.0/940-no-clobber-stamp-bits.patch
new file mode 100644
index 0000000..a33ce24
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/940-no-clobber-stamp-bits.patch
@@ -0,0 +1,11 @@
+--- a/libstdc++-v3/include/Makefile.in
++++ b/libstdc++-v3/include/Makefile.in
+@@ -1420,7 +1420,7 @@ stamp-bits: ${bits_headers}
+ 	@$(STAMP) stamp-bits
+ 
+ stamp-bits-sup: stamp-bits ${bits_sup_headers}
+-	@-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
++	@-cd ${bits_builddir} && $(LN_S) $(filter-out stamp-bits,$?) . 2>/dev/null
+ 	@$(STAMP) stamp-bits-sup
+ 
+ stamp-c_base: ${c_base_headers}
diff --git a/toolchain/gcc/patches/5.3.0/950-cpp_file_path_translation.patch b/toolchain/gcc/patches/5.3.0/950-cpp_file_path_translation.patch
new file mode 100644
index 0000000..ca018ec
--- /dev/null
+++ b/toolchain/gcc/patches/5.3.0/950-cpp_file_path_translation.patch
@@ -0,0 +1,182 @@
+Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
+
+--- a/gcc/c-family/c-opts.c
++++ b/gcc/c-family/c-opts.c
+@@ -581,6 +581,10 @@ c_common_handle_option (size_t scode, co
+       add_path (xstrdup (arg), SYSTEM, 0, true);
+       break;
+ 
++    case OPT_iremap:
++      add_cpp_remap_path (arg);
++      break;
++
+     case OPT_iwithprefix:
+       add_prefixed_path (arg, SYSTEM);
+       break;
+--- a/gcc/c-family/c.opt
++++ b/gcc/c-family/c.opt
+@@ -1528,6 +1528,10 @@ iquote
+ C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
+ -iquote <dir>	Add <dir> to the end of the quote include path
+ 
++iremap
++C ObjC C++ ObjC++ Joined Separate
++-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix in __FILE__.
++
+ iwithprefix
+ C ObjC C++ ObjC++ Joined Separate
+ -iwithprefix <dir>	Add <dir> to the end of the system include path
+--- a/gcc/doc/cpp.texi
++++ b/gcc/doc/cpp.texi
+@@ -4441,6 +4441,7 @@ without notice.
+ @c man begin SYNOPSIS
+ cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
+     [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
++    [@option{-iremap}@var{src}:@var{dst}]
+     [@option{-W}@var{warn}@dots{}]
+     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
+     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
+--- a/gcc/doc/cppopts.texi
++++ b/gcc/doc/cppopts.texi
+@@ -532,6 +532,12 @@ Search @var{dir} only for header files r
+ If @var{dir} begins with @code{=}, then the @code{=} will be replaced
+ by the sysroot prefix; see @option{--sysroot} and @option{-isysroot}.
+ 
++@item -iremap @var{src}:@var{dst}
++@opindex iremap
++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
++This option can be specified more than once.  Processing stops at the first
++match.
++
+ @item -fdirectives-only
+ @opindex fdirectives-only
+ When preprocessing, handle directives, but do not expand macros.
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -494,8 +494,8 @@ Objective-C and Objective-C++ Dialects}.
+ @item Directory Options
+ @xref{Directory Options,,Options for Directory Search}.
+ @gccoptlist{-B@var{prefix} -I@var{dir} -iplugindir=@var{dir} @gol
+--iquote@var{dir} -L@var{dir} -specs=@var{file} -I- @gol
+---sysroot=@var{dir} --no-sysroot-suffix}
++-iquote@var{dir} -iremap@var{src}:@var{dst} -L@var{dir} -specs=@var{file} @gol
++-I- --sysroot=@var{dir} --no-sysroot-suffix}
+ 
+ @item Machine Dependent Options
+ @xref{Submodel Options,,Hardware Models and Configurations}.
+@@ -11464,6 +11464,12 @@ be searched for header files only for th
+ "@var{file}"}; they are not searched for @code{#include <@var{file}>},
+ otherwise just like @option{-I}.
+ 
++@item -iremap @var{src}:@var{dst}
++@opindex iremap
++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
++This option can be specified more than once.  Processing stops at the first
++match.
++
+ @item -L@var{dir}
+ @opindex L
+ Add directory @var{dir} to the list of directories to be searched
+--- a/libcpp/include/cpplib.h
++++ b/libcpp/include/cpplib.h
+@@ -751,6 +751,9 @@ extern void cpp_set_lang (cpp_reader *,
+ /* Set the include paths.  */
+ extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
+ 
++/* Provide src:dst pair for __FILE__ remapping.  */
++extern void add_cpp_remap_path (const char *);
++
+ /* Call these to get pointers to the options, callback, and deps
+    structures for a given reader.  These pointers are good until you
+    call cpp_finish on that reader.  You can either edit the callbacks
+--- a/libcpp/macro.c
++++ b/libcpp/macro.c
+@@ -224,6 +224,64 @@ static const char * const monthnames[] =
+   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ 
++static size_t remap_pairs;
++static char **remap_src;
++static char **remap_dst;
++
++void
++add_cpp_remap_path (const char *arg)
++{
++  const char *arg_dst;
++  size_t len;
++
++  arg_dst = strchr(arg, ':');
++  if (arg_dst == NULL)
++    {
++      fprintf(stderr, "Invalid argument for -iremap\n");
++      exit(1);
++    }
++
++  len = arg_dst - arg;
++  ++arg_dst;
++
++  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
++  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
++
++  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
++  memcpy(remap_src[remap_pairs], arg, len);
++  remap_src[remap_pairs][len] = '\0';
++  remap_dst[remap_pairs] = xstrdup(arg_dst);
++  ++remap_pairs;
++}
++
++static const char *
++cpp_remap_file (const char *arg, char **tmp_name)
++{
++  char *result;
++  size_t i, len;
++
++  for (i = 0; i < remap_pairs; ++i)
++    {
++      len = strlen (remap_src[i]);
++      if (strncmp (remap_src[i], arg, len))
++	continue;
++      if (arg[len] == '\0')
++	return xstrdup (remap_dst[i]);
++      if (arg[len] != '/')
++	continue;
++      arg += len;
++      len = strlen (remap_dst[i]);
++      result = (char *) xmalloc (len + strlen (arg) + 1);
++      memcpy(result, remap_dst[i], len);
++      strcpy(result + len, arg);
++      *tmp_name = result;
++
++      return result;
++    }
++
++   return arg;
++}
++
+ /* Helper function for builtin_macro.  Returns the text generated by
+    a builtin macro. */
+ const uchar *
+@@ -286,6 +344,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+       {
+ 	unsigned int len;
+ 	const char *name;
++	char *tmp_name = NULL;
+ 	uchar *buf;
+ 	
+ 	if (node->value.builtin == BT_FILE)
+@@ -297,6 +356,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	    if (!name)
+ 	      abort ();
+ 	  }
++	name = cpp_remap_file (name, &tmp_name);
+ 	len = strlen (name);
+ 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
+ 	result = buf;
+@@ -304,6 +364,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
+ 	*buf++ = '"';
+ 	*buf = '\0';
++	free (tmp_name);
+       }
+       break;
+ 
