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build: Make sure ifuncs exist when using fp16

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Fixes msys compiles on Windows (and everywhere else hopefully).

Fixes #4285
This commit is contained in:
Benjamin Otte 2021-10-22 16:31:40 +02:00
parent 3d536f1293
commit 3c9c7a0e72
1 changed files with 13 additions and 1 deletions
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14
meson.build
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@ -712,12 +712,24 @@ if get_option('f16c').enabled()
# if !defined(__amd64__) && !defined(__x86_64__)
# error "F16C intrinsics are only available on x86_64"
# endif
#if !defined __has_attribute
# error "No __has_attribute() support"
#endif
#if !__has_attribute(ifunc)
# error "ifunc not supported"
#endif
static int resolved_ifunc (void) { return 0; }
static void *resolve_ifunc (void) { return resolved_ifunc; }
int ifunc_test (void) __attribute__((ifunc ("resolve_ifunc")));
#else
int ifunc_test (void) { return 0; }
#endif
#if defined(__SSE__) || defined(_MSC_VER)
# include <immintrin.h>
#else
# error "No F16C intrinsics available"
#endif
int main () {
float f[4] = { 0, };
unsigned short h[4] = { 0, };
@ -730,7 +742,7 @@ int main () {
__builtin_cpu_supports ("f16c");
#endif
return 0;
return ifunc_test ();
}'''
if cc.get_id() != 'msvc'
test_f16c_cflags = [ '-mf16c' ]