meson: Set _GNU_SOURCE when checking reallocarray

Otherwise the function is not detected when compiled with -Dc_std=c99. Signed-off-by: Daiki Ueno <ueno@gnu.org>
p11-glue · Aug 28, 2024 · 0992915 · 0992915
1 parent 5a79df4
commit 0992915
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/meson.build b/meson.build
@@ -360,7 +360,8 @@ conf.set10('HAVE_DECL_VASPRINTF',
                                 prefix: '#define _GNU_SOURCE'))
 
 conf.set10('HAVE_DECL_REALLOCARRAY',
-           cc.has_header_symbol('stdlib.h', 'reallocarray'))
+           cc.has_header_symbol('stdlib.h', 'reallocarray',
+                               prefix: '#define _GNU_SOURCE'))
 
 # --------------------------------------------------------------------
 # libffi