commit 3f50e35d239059823162cbfba3c7adfe8e5f1907
Author: Pierre Joye <pierre.php@gmail.com>
Date:   Sat Feb 12 15:27:06 2022 +0700

    strdup is a posix extension, to be used correctly that has to be defined (only used here, no need to pass as -D

diff --git a/tests/raqm-test.c b/tests/raqm-test.c
index 1d42c7c..1137fff 100644
--- a/tests/raqm-test.c
+++ b/tests/raqm-test.c
@@ -21,7 +21,9 @@
  * SOFTWARE.
  *
  */
-
+#ifdef __GNUC__ 
+#define  _DEFAULT_SOURCE
+#endif
 #include <assert.h>
 #include <errno.h>
 #include <locale.h>