new file mode 100644
@@ -0,0 +1,39 @@
+# musl second-part option
+
+choice
+ prompt "How to optimize musl-libc"
+ default LIBC_MUSL_OPTIMIZE_AUTO
+
+config LIBC_MUSL_OPTIMIZE_NONE
+ bool
+ prompt "Do not optimize musl-libc"
+ help
+ This option sets `--optimize=no'
+
+config LIBC_MUSL_OPTIMIZE_AUTO
+ bool
+ prompt "Use musl-libc's automatic optimization"
+ help
+ This option allows musl-libc's ./configure script to automatically
+ set the optimization.
+
+config LIBC_MUSL_OPTIMIZE_SPEED
+ bool
+ prompt "Optimize musl-libc for speed"
+ help
+ This option sets `--optimize=yes'
+
+config LIBC_MUSL_OPTIMIZE_SIZE
+ bool
+ prompt "Optimize musl-libc for size"
+ help
+ This option sets `--optimize=size'
+
+endchoice
+
+config LIBC_MUSL_OPTIMIZE
+ string
+ default "no" if LIBC_MUSL_OPTIMIZE_NONE
+ default "auto" if LIBC_MUSL_OPTIMIZE_AUTO
+ default "yes" if LIBC_MUSL_OPTIMIZE_SPEED
+ default "size" if LIBC_MUSL_OPTIMIZE_SIZE
@@ -37,6 +37,7 @@ do_libc_check_config() {
do_libc_configure() {
CT_DoLog EXTRA "Configuring C library"
local -a extra_cflags
+ local -a extra_config
# From buildroot:
# gcc constant folding bug with weak aliases workaround
@@ -45,6 +46,8 @@ do_libc_configure() {
extra_cflags+=("-fno-toplevel-reorder")
fi
+ extra_config+=( "--optimize=${CT_LIBC_MUSL_OPTIMIZE}" )
+
# NOTE: musl handles the build/host/target a little bit differently
# then one would expect:
# build : not used
@@ -57,7 +60,8 @@ do_libc_configure() {
--host="${CT_TARGET}" \
--target="${CT_TARGET}" \
--prefix="/usr" \
- --disable-gcc-wrapper
+ --disable-gcc-wrapper \
+ "${extra_config[@]}"
}
do_libc_start_files() {
This commit adds configuration knobs for optimizing musl-libc. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> --- config/libc/musl.in.2 | 39 +++++++++++++++++++++++++++++++++++++++ scripts/build/libc/musl.sh | 6 +++++- 2 files changed, 44 insertions(+), 1 deletion(-) create mode 100644 config/libc/musl.in.2