Dear Fāng-ruì,
Am 24.08.21 um 08:18 schrieb Fangrui Song via Grub-devel:
Clang does not support -falign-jumps and only recently gained support for -falign-loops. Test all the alignment options to avoid passing unrecognized options to Clang: clang-14: error: optimization flag '-falign-jumps=1' is not supported [-Werror,-Wignored-optimization-argument] When compiled with older Clang, the alignment options are not added, so just avoid the complexity for each option. Signed-off-by: Fangrui Song <mask...@google.com> --- configure.ac | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index 9a12151bd..8625e6776 100644 --- a/configure.ac +++ b/configure.ac @@ -798,8 +798,9 @@ fi# Force no alignment to save space on i386.if test "x$target_cpu" = xi386; then - AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [ - CFLAGS="$TARGET_CFLAGS -falign-loops=1 -Werror" + AC_CACHE_CHECK([whether -falign-jumps=1 -falign-loops=1 -falign-functions=1 works], + [grub_cv_cc_falign_loop], [ + CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1 -Werror" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], [grub_cv_cc_falign_loop=yes], [grub_cv_cc_falign_loop=no])
Acked-by: Paul Menzel <pmen...@molgen.mpg.de> Kind regards, Paul _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
