[gtk/4.0-backports: 49/53] meson: use correct module file extension on macOS

[Matthias Clasen <matthiasc src gnome org>]

commit cc55d662341eb4b9c32d1d28df5877db062bf677
Author: David Lechner <david lechnology com>
Date:   Fri Feb 5 15:56:14 2021 -0600

    meson: use correct module file extension on macOS
    
    GModule requires the .so file extension on macOS for historic reasons.
    However Meson defaults to .dylib for modules, so we need to override
    it to get the correct extension.
    
    Fixes #3645.

 meson.build                       | 7 +++++++
 modules/media/meson.build         | 2 ++
 modules/printbackends/meson.build | 4 ++++
 3 files changed, 13 insertions(+)
---
diff --git a/meson.build b/meson.build
index 90678f8d50..68fb8ec065 100644
--- a/meson.build
+++ b/meson.build
@@ -84,6 +84,13 @@ gtk_library_version = '1.@0@.@1@'.format(gtk_binary_age - gtk_interface_age, gtk
 
 gtk_api_version = '4.0'
 
+module_suffix = []
+# GModule requires file extension to be .so, not .dylib on Mac.
+# https://gitlab.gnome.org/GNOME/glib/issues/520
+if ['darwin', 'ios'].contains(host_machine.system())
+  module_suffix = 'so'
+endif
+
 x11_enabled      = get_option('x11-backend')
 wayland_enabled  = get_option('wayland-backend')
 broadway_enabled = get_option('broadway-backend')
diff --git a/modules/media/meson.build b/modules/media/meson.build
index aa5c0280e6..154390e7fe 100644
--- a/modules/media/meson.build
+++ b/modules/media/meson.build
@@ -35,6 +35,7 @@ if ffmpeg_found
     sources: 'gtkffmediafile.c',
     c_args: extra_c_args,
     dependencies: [ libgtk_dep, ffmpeg_deps ],
+    name_suffix: module_suffix,
     install_dir: media_install_dir,
     install: true,
   )
@@ -56,6 +57,7 @@ if gstplayer_dep.found() and gstgl_dep.found()
     ],
     c_args: extra_c_args,
     dependencies: [ libm, libgtk_dep, gstplayer_dep, gstgl_dep ],
+    name_suffix: module_suffix,
     install_dir: media_install_dir,
     install: true,
   )
diff --git a/modules/printbackends/meson.build b/modules/printbackends/meson.build
index 64d8a41974..fa55d60e3b 100644
--- a/modules/printbackends/meson.build
+++ b/modules/printbackends/meson.build
@@ -22,6 +22,7 @@ if cups_dep.found()
     ],
     c_args: printbackends_args,
     dependencies: [libgtk_dep, cups_dep, colord_dep],
+    name_suffix: module_suffix,
     install_dir: printbackends_install_dir,
     install: true,
   )
@@ -32,6 +33,7 @@ else
     sources: 'gtkprintbackendlpr.c',
     c_args: printbackends_args,
     dependencies: libgtk_dep,
+    name_suffix: module_suffix,
     install_dir: printbackends_install_dir,
     install: true,
   )
@@ -49,6 +51,7 @@ if rest_dep.found() and json_glib_dep.found()
     ],
     c_args: printbackends_args,
     dependencies: [ libgtk_dep, rest_dep, json_glib_dep ],
+    name_suffix: module_suffix,
     install_dir: printbackends_install_dir,
     install: true)
 endif
@@ -59,6 +62,7 @@ shared_module('printbackend-file',
   sources: 'gtkprintbackendfile.c',
   c_args: printbackends_args,
   dependencies: libgtk_dep,
+  name_suffix: module_suffix,
   install_dir: printbackends_install_dir,
   install: true,
 )