@@ -130,6 +130,7 @@ while [[ "$1" = -* ]]; do
;;
--cc)
cc="$arg"
+ cc_selected=yes
;;
--cflags)
cflags="$arg"
@@ -200,6 +201,10 @@ while [[ "$1" = -* ]]; do
esac
done
+if [ -z "$cc_selected" ] && [ "$cross_prefix" ]; then
+ cc="$cross_prefix$cc"
+fi
+
if [ -z "$efi" ] || [ "$efi" = "n" ]; then
[ "$efi_direct" = "y" ] && efi_direct=
fi
@@ -370,7 +375,7 @@ fi
cat << EOF > lib-test.c
__UINT32_TYPE__
EOF
-u32_long=$("$cross_prefix$cc" -E lib-test.c | grep -v '^#' | grep -q long && echo yes)
+u32_long=$("$cc" $cflags -E lib-test.c | grep -v '^#' | grep -q long && echo yes)
rm -f lib-test.c
# check if slash can be used for division
@@ -379,7 +384,7 @@ if [ "$arch" = "i386" ] || [ "$arch" = "x86_64" ]; then
foo:
movl (8 / 2), %eax
EOF
- wa_divide=$("$cross_prefix$cc" -c lib-test.S >/dev/null 2>&1 || echo yes)
+ wa_divide=$("$cc" $cflags -c lib-test.S >/dev/null 2>&1 || echo yes)
rm -f lib-test.{o,S}
fi
@@ -442,7 +447,7 @@ ARCH=$arch
ARCH_NAME=$arch_name
ARCH_LIBDIR=$arch_libdir
PROCESSOR=$processor
-CC=$cross_prefix$cc
+CC=$cc
CFLAGS=$cflags
LD=$cross_prefix$ld
OBJCOPY=$cross_prefix$objcopy
When a user specifies the compiler with --cc assume it's already fully named, even if the user also specifies a cross-prefix. This allows clang to be selected for the compiler, which doesn't use prefixes, but also still provide a cross prefix for binutils. If a user needs a prefix on the compiler that they specify with --cc, then they'll just have to specify it with the prefix prepended. Also ensure user provided cflags are used when testing the compiler, since the flags may drastically change behavior, such as the --target flag for clang. With these changes it's possible to cross compile for riscv with clang after configuring with ./configure --arch=riscv64 --cc=clang --cflags='--target=riscv64' \ --cross-prefix=riscv64-linux-gnu- Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Jones <andrew.jones@linux.dev> --- configure | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)