[gtk/wip/smcv/gresource-internal] build: Tell glib-compile-resources to make symbols internal where possible

[Simon McVittie <smcv src gnome org>]

commit 17c2a1cb4ea2093d0aac442162295751ac6df2a5
Author: Simon McVittie <smcv debian org>
Date:   Tue Jan 4 17:41:34 2022 +0000

    build: Tell glib-compile-resources to make symbols internal where possible
    
    Partial solution to https://gitlab.gnome.org/GNOME/gtk/-/issues/4598
    
    Signed-off-by: Simon McVittie <smcv debian org>

 gtk/meson.build | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/meson.build b/gtk/meson.build
index 6ce2c18320..201af63f23 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -883,6 +883,7 @@ if not meson.is_cross_build() and build_machine.system() == 'linux' and objcopy.
       depfile : 'gtk.gresource.d',
       command : [glib_compile_resources,
                  '--generate',
+                 '--internal',
                  '--target=@OUTPUT@',
                  '--dependency-file=@DEPFILE@',
                  '--sourcedir=' + meson.current_source_dir(),
@@ -897,6 +898,7 @@ if not meson.is_cross_build() and build_machine.system() == 'linux' and objcopy.
       depfile : 'gtkresources.c.d',
       command : [glib_compile_resources,
                  '--generate-source',
+                 '--internal',
                  '--target=@OUTPUT@',
                  '--dependency-file=@DEPFILE@',
                  '--sourcedir=' + meson.current_source_dir(),
@@ -913,6 +915,7 @@ if not meson.is_cross_build() and build_machine.system() == 'linux' and objcopy.
       depfile : 'gtkresources.h.d',
       command : [glib_compile_resources,
                  '--generate-header',
+                 '--internal',
                  '--target=@OUTPUT@',
                  '--dependency-file=@DEPFILE@',
                  '--sourcedir=' + meson.current_source_dir(),