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meson: pass -fno-builtin when testing whether stpcpy is a builtin

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In https://bugzilla.gnome.org/show_bug.cgi?id=794555 the tests for
posix_memalign and stpcpy were extended to catch the case where
the compiler provides an incomplete builtin.

Under MSYS2 the example code still compiles and links while the real usage
of stpcpy fails to build. To prevent the MSYS2 gcc from using the builtin
versions pass -fno-builtin.

https://bugzilla.gnome.org/show_bug.cgi?id=793729
This commit is contained in:
Christoph Reiter 2018-04-25 10:48:51 +02:00
parent d137cebf8f
commit 06d61434c9
1 changed files with 14 additions and 2 deletions
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meson.build
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@ -453,12 +453,21 @@ foreach f : functions
endif
endforeach
if cc.get_id() == 'gcc' or cc.get_id() == 'clang'
no_builtin_args = cc.get_supported_arguments(['-fno-builtin'])
else
no_builtin_args = []
endif
# Check that stpcpy() is not a builtin
if cc.links('''#include <string.h>
int main (int argc, char ** argv) {
char p[10];
return stpcpy (p, argv[0]) != NULL;
}''', name : 'stpcpy() is not a builtin')
}
''',
args : no_builtin_args,
name : 'stpcpy() is not a builtin')
glib_conf.set('HAVE_STPCPY', 1)
endif
@ -467,7 +476,10 @@ if cc.links('''#include <stdlib.h>
int main (int argc, char ** argv) {
void *p;
return posix_memalign (&p, 16, argc);
}''', name : 'posix_memalign() is not a builtin')
}
''',
args : no_builtin_args,
name : 'posix_memalign() is not a builtin')
glib_conf.set('HAVE_POSIX_MEMALIGN', 1)
endif