[gdk-pixbuf/ebassi/for-master: 7/8] Build PNG and JPEG loaders into gdk-pixbuf by default

[Emmanuele Bassi <ebassi src gnome org>]

commit 03a4cae4121837371c3dfba7b7f4ce6978a3d66b
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Apr 7 17:56:41 2021 +0100

    Build PNG and JPEG loaders into gdk-pixbuf by default
    
    GdkPixbuf without PNG and JPEG loaders is less than useful for loading
    assets in GTK (and anywhere else, really).
    
    We go to great lengths to ensure that both the PNG and JPEG loaders are
    built by default, to the point of including subprojects for libpng and
    libjpeg. Let's avoid any doubt, and ensure that those loaders are also
    included in the default shared library.

 meson.build | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/meson.build b/meson.build
index 8911f8e6f..b8cb45726 100644
--- a/meson.build
+++ b/meson.build
@@ -234,6 +234,10 @@ gmodule_supported = gmodule_dep.get_variable(pkgconfig: 'gmodule_supported', int
 build_modules = gmodule_supported == 'true' or gmodule_supported != '0'
 gdk_pixbuf_conf.set('USE_GMODULE', build_modules)
 
+# We want these loaders to be built into gdk-pixbuf unless
+# the builtin_loaders option specifies otherwise
+default_builtin_loaders = [ 'png', 'jpeg' ]
+
 # Check which loaders should be built into gdk-pixbuf
 builtin_loaders = get_option('builtin_loaders').split(',')
 
@@ -242,6 +246,8 @@ builtin_loaders = get_option('builtin_loaders').split(',')
 builtin_all_loaders = false
 if builtin_loaders == [ 'all' ]
   builtin_all_loaders = true
+elif builtin_loaders == [ 'default' ]
+  builtin_loaders = default_builtin_loaders
 elif builtin_loaders == [ 'none' ]
   builtin_loaders = []
 endif