[libgnome-volume-control] build: Do not use headers on library building

[Iñigo Martínez <inigomartinez src gnome org>]

commit f764bb68e096324ca58dc75254f453e94670a37b
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Sat Jan 27 08:50:05 2018 +0100

    build: Do not use headers on library building
    
    Headers are not necessary to be passed to the library compilation
    function because the compiler will find them. On the other hand
    they are necessary for the proper GIR generation.
    
    This patch splits headers and sources, uses only sources for the
    library building and uses both for GIR generation. It also allows
    getting both separately.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792948

 meson.build |   35 +++++++++++++++++++----------------
 1 files changed, 19 insertions(+), 16 deletions(-)
---
diff --git a/meson.build b/meson.build
index adfa85f..72f098b 100644
--- a/meson.build
+++ b/meson.build
@@ -18,27 +18,30 @@ cdata.set_quoted('PACKAGE_VERSION', get_option('package_version'))
 
 libgvc_inc = include_directories('.')
 
-libgvc_gir_sources = [
+libgvc_gir_headers = [
+  'gvc-channel-map.h',
   'gvc-mixer-card.h',
-  'gvc-mixer-card.c',
+  'gvc-mixer-control.h',
+  'gvc-mixer-event-role.h',
+  'gvc-mixer-sink.h',
+  'gvc-mixer-sink-input.h',
+  'gvc-mixer-source.h',
+  'gvc-mixer-source-output.h',
   'gvc-mixer-stream.h',
-  'gvc-mixer-stream.c',
-  'gvc-channel-map.h',
+  'gvc-mixer-ui-device.h'
+]
+
+libgvc_gir_sources = [
   'gvc-channel-map.c',
-  'gvc-mixer-ui-device.h',
-  'gvc-mixer-ui-device.c',
-  'gvc-mixer-sink.h',
+  'gvc-mixer-card.c',
+  'gvc-mixer-control.c',
+  'gvc-mixer-event-role.c',
   'gvc-mixer-sink.c',
-  'gvc-mixer-source.h',
-  'gvc-mixer-source.c',
-  'gvc-mixer-sink-input.h',
   'gvc-mixer-sink-input.c',
-  'gvc-mixer-source-output.h',
+  'gvc-mixer-source.c',
   'gvc-mixer-source-output.c',
-  'gvc-mixer-event-role.h',
-  'gvc-mixer-event-role.c',
-  'gvc-mixer-control.h',
-  'gvc-mixer-control.c'
+  'gvc-mixer-stream.c',
+  'gvc-mixer-ui-device.c'
 ]
 
 libgvc_no_gir_sources = [
@@ -110,7 +113,7 @@ if enable_introspection
   endif
 
   libgvc_gir = gnome.generate_gir(libgvc,
-    sources: libgvc_gir_sources,
+    sources: libgvc_gir_sources + libgvc_gir_headers,
     nsversion: '1.0',
     namespace: 'Gvc',
     includes: ['Gio-2.0', 'GObject-2.0'],