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Build: Sync the compile check changes from CMakeLists.txt 

It's nice to keep these in sync. The use of main() will later allow
AC_LINK_IFELSE usage too which may avoid the more fragile -Werror.

(cherry picked from commit 5a728813c3)
This commit is contained in:
Lasse Collin 2024-06-24 23:34:34 +03:00
parent 809e69f1f5
commit 2c3e4cbbdc
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GPG Key ID: 38EE757D69184620
1 changed files with 8 additions and 7 deletions
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15
configure.ac
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@ -1028,10 +1028,11 @@ AS_IF([test "x$enable_clmul_crc" = xno], [
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__)
__attribute__((__target__("ssse3,sse4.1,pclmul")))
#endif
__m128i my_clmul(__m128i a)
int main(void)
{
const __m128i b = _mm_set_epi64x(1, 2);
return _mm_clmulepi64_si128(a, b, 0);
__m128i a = _mm_set_epi64x(1, 2);
a = _mm_clmulepi64_si128(a, a, 0);
return 0;
}
]])], [
AC_DEFINE([HAVE_USABLE_CLMUL], [1],
@ -1068,9 +1069,9 @@ AS_IF([test "x$enable_arm64_crc32" = xno], [
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__)
__attribute__((__target__("+crc")))
#endif
uint32_t my_crc(uint32_t a, uint64_t b)
int main(void)
{
return __crc32d(a, b);
return __crc32d(1, 2) != 0;
}
]])], [
AC_DEFINE([HAVE_ARM64_CRC32], [1],
@ -1131,13 +1132,13 @@ AS_CASE([$enable_sandbox],
#include <sys/syscall.h>
#include <sys/prctl.h>
void my_sandbox(void)
int main(void)
{
(void)prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
(void)SYS_landlock_create_ruleset;
(void)SYS_landlock_restrict_self;
(void)LANDLOCK_CREATE_RULESET_VERSION;
return;
return 0;
}
]])], [
enable_sandbox=found