[gdk-pixbuf/ebassi/for-master: 3/5] Build PNG and JPEG loaders into gdk-pixbuf by default

[Emmanuele Bassi <ebassi src gnome org>]

commit a6175b65029c3ae01e9da8a1071863aff22aaf7b
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 43a88a6cf..286f17c2d 100644
--- a/meson.build
+++ b/meson.build
@@ -237,6 +237,10 @@ else
 endif
 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(',')
 
@@ -245,6 +249,8 @@ 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