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cmake: Check for weak attribute

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit 23546e354c)
This commit is contained in:
Andreas Schneider 2022-08-30 19:35:00 +02:00
parent 87bac425a0
commit 4fc7ab4399
2 changed files with 18 additions and 0 deletions

View File

@ -375,6 +375,23 @@ int main(void) {
return 0;
}" HAVE_FALLTHROUGH_ATTRIBUTE)
check_c_source_compiles("
#define WEAK __attribute__((weak))
WEAK int sum(int a, int b)
{
return a + b;
}
int main(void)
{
int i = sum(2, 2);
(void)i;
return 0;
}" HAVE_WEAK_ATTRIBUTE)
if (NOT WIN32)
check_c_source_compiles("
#define __unused __attribute__((unused))

View File

@ -225,6 +225,7 @@
#cmakedefine HAVE_FALLTHROUGH_ATTRIBUTE 1
#cmakedefine HAVE_UNUSED_ATTRIBUTE 1
#cmakedefine HAVE_WEAK_ATTRIBUTE 1
#cmakedefine HAVE_CONSTRUCTOR_ATTRIBUTE 1
#cmakedefine HAVE_DESTRUCTOR_ATTRIBUTE 1