[gimp/wip/Jehan/CI-Windows] plug-ins: generated rc files depends on config.h.

[Jehan <jehanp src gnome org>]

commit d6fccb4b9a7db5c1fd37ac5a593a24a41d7a6247
Author: Jehan <jehan girinstud io>
Date:   Tue Oct 1 00:01:59 2019 +0200

    plug-ins: generated rc files depends on config.h.
    
    We must make sure that config.h has already been generated before we run
    windows.compile_resources() for the Windows host.

 meson.build                 | 2 +-
 plug-ins/common/meson.build | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 1cb0203307..0c33533753 100644
--- a/meson.build
+++ b/meson.build
@@ -1409,7 +1409,7 @@ configure_file(
 )
 
 
-configure_file(
+config_h = configure_file(
   output: 'config.h',
   configuration: conf
 )
diff --git a/plug-ins/common/meson.build b/plug-ins/common/meson.build
index 58ce45a53e..1e0174df8b 100644
--- a/plug-ins/common/meson.build
+++ b/plug-ins/common/meson.build
@@ -172,6 +172,7 @@ foreach plugin : common_plugins_list
       include_directories: [
         rootInclude, appInclude,
       ],
+      depend_files: [ config_h ],
     )
   endif