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Use AC_LINK_IFELSE instead of _COMPILE_IFELSE for cpuid detection

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This apparently works around a bug on OpenSuSE on ARM and PPC when
LTO is enabled.

Still, as documented, LTO shouldn't be used when compiling the library.
This commit is contained in:
Frank Denis 2019-08-16 12:28:42 +02:00
parent ab2c18cec2
commit e72a7d183a
1 changed files with 1 additions and 1 deletions
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2
configure.ac
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@ -694,7 +694,7 @@ AC_SUBST(HAVE_TI_MODE_V)
HAVE_CPUID_V=0
AS_IF([test "$enable_asm" != "no"],[
AC_MSG_CHECKING(for cpuid instruction)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[
AC_LINK_IFELSE([AC_LANG_PROGRAM([[ ]], [[
unsigned int cpu_info[4];
__asm__ __volatile__ ("xchgl %%ebx, %k1; cpuid; xchgl %%ebx, %k1" :
"=a" (cpu_info[0]), "=&r" (cpu_info[1]),