[glib/glib-2-62: 1/2] build: don't check for protected visibility

[Sebastian Dröge <sdroege src gnome org>]

commit 9430082bbfbf3802156e37f3ad3b4caf43d921b1
Author: Matthew Waters <matthew centricular com>
Date:   Tue Dec 3 13:33:16 2019 +1100

    build: don't check for protected visibility
    
    It's not supported on macOS' clang compiler and will fail the visibility
    check and thus make the G_GNUC_INTERNAL attribute do nothing.
    
    Compiler stderr:
     /var/folders/nt/j2v2x4wd5cl33fq27mm31mwc0000gn/T/tmpxxf2zzi_/testfile.c:13:19: error: target does not 
support 'protected' visibility; using 'default' [-Werror,-Wunsupported-visibility]
      __attribute__ ((visibility ("protected")))
                      ^
    1 error generated.
    
    Checking if "GNU C visibility attributes test" compiles: NO

 meson.build | 6 ------
 1 file changed, 6 deletions(-)
---
diff --git a/meson.build b/meson.build
index 4bbf4c295..df5b770da 100644
--- a/meson.build
+++ b/meson.build
@@ -142,11 +142,6 @@ g_have_gnuc_visibility = cc.compiles('''
   {
   }
   void
-  __attribute__ ((visibility ("protected")))
-       f_protected (void)
-  {
-  }
-  void
   __attribute__ ((visibility ("default")))
        f_default (void)
   {
@@ -155,7 +150,6 @@ g_have_gnuc_visibility = cc.compiles('''
   {
     f_hidden();
     f_internal();
-    f_protected();
     f_default();
     return 0;
   }