Marc Glisse <marc.gli...@inria.fr> writes:
> Let's see. If I configure GMP with just --enable-fat, I still see in
> config.h
>
> #define HAVE_HOST_CPU_nehalem 1
>
> and longlong.h enables mulx based on
>
> #if X86_ASM_MULX \
> && (HAVE_HOST_CPU_haswell || HAVE_HOST_CPU_broadwell \
> || HAVE_HOST_CPU_skylake || HAVE_HOST_CPU_bd4 || HAVE_HOST_CPU_zen)
Torbjörn Granlund <t...@gmplib.org> writes:
> Emmanuel Lonca <emmanuel.lo...@univ-artois.fr> writes:
>
> To what I understand from the GMP documentation, compiling with the
> --enable-fat flag should produce a library that can be used on any x86
> architecture.
>
> Yes, that's the idea IIRC.
It seems the above use in longlong.h is the only use of X86_ASM_MULX?
Then it seems right to completely disable that in fat builds, like
diff -r 1a2ad0e32507 configure.ac
--- a/configure.ac Mon Feb 03 17:52:54 2025 +0100
+++ b/configure.ac Mon Feb 10 16:21:35 2025 +0100
@@ -3843,7 +3843,9 @@ yes
X86_PATTERN | X86_64_PATTERN)
GMP_ASM_ALIGN_FILL_0x90
if test "$x86_have_mulx" = yes; then
- GMP_ASM_X86_MULX
+ if test "$enable_fat" = no; then
+ GMP_ASM_X86_MULX
+ fi
fi
GMP_ASM_COFF_TYPE
case $ABI in
Regards,
/Niels
--
Niels Möller. PGP key CB4962D070D77D7FCB8BA36271D8F1FF368C6677.
Internet email is subject to wholesale government surveillance.
_______________________________________________
gmp-bugs mailing list
gmp-bugs@gmplib.org
https://gmplib.org/mailman/listinfo/gmp-bugs
