Raise minimum supported macOS version to 10.13 (High Sierra).

Allows removing all macOS version ifdefs.

Closes https://gitlab.gnome.org/GNOME/glib/-/issues/3441

docs/supported-platforms.md

@@ -13,13 +13,9 @@ support. The list will be periodically updated for the development branch,
 with versions typically being updated as they lapse from receiving support from
 their vendor.
 
- * macOS: minimum version OS X 10.7 (we
+ * macOS: minimum version macOS 11.
-   [don’t support universal binaries](https://bugzilla.gnome.org/show_bug.cgi?id=780238);
+   * [No support for universal binaries ](https://bugzilla.gnome.org/show_bug.cgi?id=780238);
-   some features (like notification support)
+   * macOS 10.13 support is maintained on a best-effort basis.
-   [require OS X 10.9](https://bugzilla.gnome.org/show_bug.cgi?id=747146)
-   * Note that older versions of macOS than what’s currently officially
-     supported by Apple are supported by GLib on a best-effort basis due to
-     still having significant user bases
  * Windows:
    [minimum version is Windows 8](https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1970),
    minimum build chain is Visual Studio 2012

gio/giomodule.c

@@ -1093,11 +1093,8 @@ extern GType g_proxy_resolver_portal_get_type (void);
 extern GType g_network_monitor_portal_get_type (void);
 #endif
 
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
-extern GType g_cocoa_notification_backend_get_type (void);
-#endif
-
 #ifdef HAVE_COCOA
+extern GType g_cocoa_notification_backend_get_type (void);
 extern GType g_osx_network_monitor_get_type (void);
 #endif
 
@@ -1352,6 +1349,7 @@ _g_io_modules_ensure_loaded (void)
       g_type_ensure (g_registry_settings_backend_get_type ());
 #endif
 #ifdef HAVE_COCOA
+      g_type_ensure (g_cocoa_notification_backend_get_type ());
       g_type_ensure (g_nextstep_settings_backend_get_type ());
       g_type_ensure (g_osx_app_info_get_type ());
       g_type_ensure (g_osx_network_monitor_get_type ());
@@ -1368,9 +1366,6 @@ _g_io_modules_ensure_loaded (void)
       g_type_ensure (g_power_profile_monitor_portal_get_type ());
       g_type_ensure (g_proxy_resolver_portal_get_type ());
 #endif
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
-      g_type_ensure (g_cocoa_notification_backend_get_type ());
-#endif
 #ifdef G_OS_WIN32
       g_type_ensure (g_win32_notification_backend_get_type ());
       g_type_ensure (_g_winhttp_vfs_get_type ());

gio/gnextstepsettingsbackend.m

@@ -345,12 +345,7 @@ g_nextstep_settings_backend_get_g_variant (id                  object,
 
           g_variant_builder_init_static (&builder, type);
 
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
           for(key in object)
-#else
-          NSEnumerator *enumerator = [object objectEnumerator];
-          while((key = [enumerator nextObject]))
-#endif
             {
               GVariant *name;
               id value;
@@ -386,12 +381,7 @@ g_nextstep_settings_backend_get_g_variant (id                  object,
           value_type = g_variant_type_element (type);
           g_variant_builder_init_static (&builder, type);
 
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
           for(value in object)
-#else
-          NSEnumerator *enumerator = [object objectEnumerator];
-          while((value = [enumerator nextObject]))
-#endif
             {
               GVariant *variant = g_nextstep_settings_backend_get_g_variant (value, value_type);
 

gio/gosxappinfo.m

@@ -314,7 +314,6 @@ get_bundle_for_id (CFStringRef bundle_id)
   CFURLRef app_url;
   NSBundle *bundle;
 
-#ifdef AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER
   CFArrayRef urls = LSCopyApplicationURLsForBundleIdentifier (bundle_id, NULL);
   if (urls)
     {
@@ -326,9 +325,6 @@ get_bundle_for_id (CFStringRef bundle_id)
       CFRelease (urls);
     }
   else
-#else
-  if (LSFindApplicationForInfo (kLSUnknownCreator, bundle_id, NULL, NULL, &app_url) == kLSApplicationNotFoundErr)
-#endif
     {
 #ifdef G_ENABLE_DEBUG /* This can fail often, no reason to alloc strings */
       gchar *id_str = create_cstr_from_cfstring (bundle_id);
@@ -744,11 +740,7 @@ g_app_info_get_default_for_type_impl (const char *content_type,
   gchar *mime_type;
   CFStringRef type;
   NSBundle *bundle;
-#ifdef AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER
   CFURLRef bundle_id;
-#else
-  CFStringRef bundle_id;
-#endif
 
   mime_type = g_content_type_get_mime_type (content_type);
   if (g_str_has_prefix (mime_type, "x-scheme-handler/"))
@@ -763,11 +755,7 @@ g_app_info_get_default_for_type_impl (const char *content_type,
 
   type = create_cfstring_from_cstr (content_type);
 
-#ifdef AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER
   bundle_id = LSCopyDefaultApplicationURLForContentType (type, kLSRolesAll, NULL);
-#else
-  bundle_id = LSCopyDefaultRoleHandlerForContentType (type, kLSRolesAll);
-#endif
   CFRelease (type);
 
   if (!bundle_id)
@@ -776,11 +764,7 @@ g_app_info_get_default_for_type_impl (const char *content_type,
       return NULL;
     }
 
-#ifdef AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER
   bundle = get_bundle_for_url (bundle_id);
-#else
-  bundle = get_bundle_for_id (bundle_id);
-#endif
   CFRelease (bundle_id);
 
   if (!bundle)

gio/meson.build

@@ -396,9 +396,7 @@ if host_system != 'windows'
     unix_sources += files('gosxappinfo.m')
     framework_dep = dependency('appleframeworks', modules : ['Foundation', 'CoreFoundation', 'AppKit'])
     platform_deps += [framework_dep]
-    if glib_have_os_x_9_or_later
+    unix_sources += files('gcocoanotificationbackend.m')
-      unix_sources += files('gcocoanotificationbackend.m')
-    endif
     unix_sources += files('gosxnetworkmonitor.c')
     application_headers += files('gosxappinfo.h')
   else

meson.build

@@ -965,12 +965,18 @@ if host_system == 'linux'
 endif
 
 osx_ldflags = []
-glib_have_os_x_9_or_later = false
 glib_have_carbon = false
 glib_have_cocoa = false
 if host_system == 'darwin'
   add_languages('objc', native: false, required: true)
   objcc = meson.get_compiler('objc')
+  if not objcc.compiles('''#include <AvailabilityMacros.h>
+                           #if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
+                           #error message "GLib requires macOS 10.13 or later."
+                           #endif''',
+                         name : 'macOS 10.13 or later')
+    error('GLib requires macOS 10.13 or later.')
+  endif
 
   add_project_arguments(objcc.get_supported_arguments(warning_objc_args), language: 'objc')
 
@@ -981,11 +987,6 @@ if host_system == 'darwin'
 
   if glib_have_carbon
     glib_conf.set('HAVE_CARBON', true)
-    glib_have_os_x_9_or_later = objcc.compiles('''#include <AvailabilityMacros.h>
-                                                  #if MAC_OS_X_VERSION_MIN_REQUIRED < 1090
-                                                  #error Compiling for minimum OS X version before 10.9
-                                                  #endif''',
-                                               name : 'OS X 9 or later')
   endif
 
   # Mac OS X Cocoa support