From: Fabian Vogt <fabian@ritter-vogt.de>
Subject: Workaround as-tag marking strcmp/strlen/... as hidden

https://github.com/ximion/appstream/issues/207

Index: AppStream-0.12.2/src/as-tag.c
===================================================================
--- AppStream-0.12.2.orig/src/as-tag.c
+++ AppStream-0.12.2/src/as-tag.c
@@ -36,6 +36,8 @@
 #pragma clang diagnostic ignored "-Wmissing-field-initializers"
 #endif
 
+#include <string.h>
+
 #pragma GCC visibility push(hidden)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wconversion"