Without this option compiler sometimes emits R_RISCV_ALIGN relocs.
Unlike other relocs this one requires the linker to do NOP deletions
and we can't ignore them. Just instruct compiler not to emit them
Signed-off-by: Vladimir Serbinenko <phco...@gmail.com>
---
configure.ac | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/configure.ac b/configure.ac
index 34f4f9415..2818a73a6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -913,6 +913,31 @@ if test "x$target_cpu" = xloongarch64; then
TARGET_CCASFLAGS="$TARGET_CCASFLAGS -Wa,-mla-global-with-abs"
fi
+if test "x$target_cpu" = xriscv64 || test "x$target_cpu" = xriscv32; then
+ AC_CACHE_CHECK([for no-relax options], grub_cv_target_cc_mno_relax, [
+ grub_cv_target_cc_mno_relax=no
+ for cand in "-mno-relax" "-Wa,-mno-relax"; do
+ if test x"$grub_cv_target_cc_mno_relax" != xno ; then
+ break
+ fi
+ CFLAGS="$TARGET_CFLAGS $cand -Werror"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+ asm (".globl start; start:");
+ void __main (void);
+ void __main (void) {}
+ int main (void);
+ ]], [[]])], [grub_cv_target_cc_mno_relax="$cand"], [])
+ done
+ ])
+
+ CFLAGS="$TARGET_CFLAGS"
+
+ if test x"$grub_cv_target_cc_mno_relax" != xno ; then
+ TARGET_CFLAGS="$TARGET_CFLAGS $grub_cv_target_cc_mno_relax"
+ TARGET_CCASFLAGS="$TARGET_CCASFLAGS $grub_cv_target_cc_mno_relax"
+ 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)
--
2.49.0
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