From 6e2ad3c4bab5e23d202ffcb171c49a9caeab8323 Mon Sep 17 00:00:00 2001
From: Peter Kokot <peterkokot@gmail.com>
Date: Fri, 21 Jun 2024 16:18:28 +0200
Subject: [PATCH] Define HAVE_VISIBILITY for fileinfo extension (#14618)

The libmagic library also uses the HAVE_VISIBILITY macro that should be
defined to 1 if visibility is supported or 0 if not.

Follow-up of GH-5526 (-Wundef)
---
 ext/fileinfo/config.m4         | 2 ++
 ext/fileinfo/libmagic/config.h | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/ext/fileinfo/config.m4 b/ext/fileinfo/config.m4
index a38a205822e..fa6c4d116be 100644
--- a/ext/fileinfo/config.m4
+++ b/ext/fileinfo/config.m4
@@ -21,6 +21,8 @@ if test "$PHP_FILEINFO" != "no"; then
     libmagic_sources="$libmagic_sources libmagic/strcasestr.c"
   ])
 
+  AX_GCC_FUNC_ATTRIBUTE([visibility])
+
   PHP_NEW_EXTENSION(fileinfo, fileinfo.c php_libmagic.c $libmagic_sources, $ext_shared,,-I@ext_srcdir@/libmagic)
   PHP_ADD_BUILD_DIR($ext_builddir/libmagic)
 
diff --git a/ext/fileinfo/libmagic/config.h b/ext/fileinfo/libmagic/config.h
index 5acdf168730..4af6e06c412 100644
--- a/ext/fileinfo/libmagic/config.h
+++ b/ext/fileinfo/libmagic/config.h
@@ -8,3 +8,11 @@
 #ifndef HAVE_STDINT_H
 #define HAVE_STDINT_H 1
 #endif
+
+#ifndef HAVE_VISIBILITY
+# ifdef HAVE_FUNC_ATTRIBUTE_VISIBILITY
+#  define HAVE_VISIBILITY 1
+# else
+#  define HAVE_VISIBILITY 0
+# endif
+#endif