From 5cea201f288246488e2189c49d969d00ebec2898 Mon Sep 17 00:00:00 2001 From: Michael Chang Date: Fri, 19 Feb 2021 17:40:43 +0800 Subject: [PATCH] Fix build error in binutils 2.36 The build fails in binutils 2.36 [ 520s] cat kernel_syms.lst > syminfo.lst.new [ 520s] /usr/lib64/gcc/x86_64-suse-linux/10/../../../../x86_64-suse-linux/bin/ld: section .note.gnu.property VMA [0000000000400158,0000000000400187] overlaps section .bss VMA [000000000000f000,000000000041e1af] It is caused by assembler now generates the GNU property notes section by default. Use the assmbler option -mx86-used-note=no to disable the section from being generated to workaround the ensuing linker issue. Signed-off-by: Michael Chang --- configure.ac | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/configure.ac b/configure.ac index fa8f74bb9..38ee5f579 100644 --- a/configure.ac +++ b/configure.ac @@ -836,6 +836,20 @@ if ( test "x$target_cpu" = xi386 || test "x$target_cpu" = xx86_64 ) && test "x$p TARGET_CFLAGS="$TARGET_CFLAGS -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" fi +if ( test "x$target_cpu" = xi386 || test "x$target_cpu" = xx86_64 ); then + AC_CACHE_CHECK([whether -Wa,-mx86-used-note works], [grub_cv_cc_mx86_used_note], [ + CFLAGS="$TARGET_CFLAGS -Wa,-mx86-used-note=no -Werror" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], + [grub_cv_cc_mx86_used_note=yes], + [grub_cv_cc_mx86_used_note=no]) + ]) + + if test "x$grub_cv_cc_mx86_used_note" = xyes; then + TARGET_CFLAGS="$TARGET_CFLAGS -Wa,-mx86-used-note=no" + TARGET_CCASFLAGS="$TARGET_CCASFLAGS -Wa,-mx86-used-note=no" + fi +fi + # GRUB doesn't use float or doubles at all. Yet some toolchains may decide # that floats are a good fit to run instead of what's written in the code. # Given that floating point unit is disabled (if present to begin with)