[gnome-control-center/wip/lantw/build-include-generated-sources-in-declared-dependencies] build: Include generated sources in declared dependencies

[Ting-Wei Lan <lantw src gnome org>]

commit a80783f1e1e15f7dff3fe306fa1c31627d01c9a5
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Wed Jul 24 14:58:39 2019 +0800

    build: Include generated sources in declared dependencies
    
    Sometimes ninja decides to compile tests/interactive-panels/main.c,
    which requires shell/resources.h, before shell/resources.h is generated.
    
    The fix is to use 'sources' argument of declare_dependency to properly
    declare the dependency on generated headers.
    
    A fix for tests/datetime and panels/datetime is also included in the
    commit to fix a similar problem.
    
    Closes https://gitlab.gnome.org/GNOME/gnome-control-center/merge_requests/472

 panels/datetime/meson.build | 6 ++++++
 shell/meson.build           | 9 +++++++--
 tests/datetime/meson.build  | 5 +----
 3 files changed, 14 insertions(+), 6 deletions(-)
---
diff --git a/panels/datetime/meson.build b/panels/datetime/meson.build
index 64af3422e..2ed0da71e 100644
--- a/panels/datetime/meson.build
+++ b/panels/datetime/meson.build
@@ -192,5 +192,11 @@ datetime_panel_lib = static_library(
 )
 panels_libs += datetime_panel_lib
 
+datetime_panel_lib_dep = declare_dependency(
+              sources : resources,
+  include_directories : [top_inc, include_directories('.')],
+            link_with : datetime_panel_lib
+)
+
 subdir('po-timezones')
 subdir('icons')
diff --git a/shell/meson.build b/shell/meson.build
index 1dc181f02..89b96590e 100644
--- a/shell/meson.build
+++ b/shell/meson.build
@@ -53,12 +53,14 @@ common_sources = files(
 # Generated files #
 ###################
 
+generated_sources = files()
+
 # Debug
 debug_conf = configuration_data()
 debug_conf.set('BUGREPORT_URL', 'https://gitlab.gnome.org/GNOME/' + meson.project_name() + '/issues/new')
 debug_conf.set10('ENABLE_TRACING', enable_tracing)
 
-common_sources += configure_file(
+generated_sources += configure_file(
           input : 'cc-debug.h.in',
          output : 'cc-debug.h',
   configuration : debug_conf
@@ -71,13 +73,14 @@ resource_data = files(
   'help-overlay.ui',
 )
 
-common_sources += gnome.compile_resources(
+generated_sources += gnome.compile_resources(
        'resources',
   meson.project_name() + '.gresource.xml',
      dependencies : resource_data,
            export : true
 )
 
+common_sources += generated_sources
 
 ############
 # libshell #
@@ -92,6 +95,7 @@ libshell = static_library(
 )
 
 libshell_dep = declare_dependency(
+              sources : generated_sources,
   include_directories : top_inc,
             link_with : libshell
 )
@@ -159,6 +163,7 @@ libtestshell = static_library(
             link_with : panels_libs,
 )
 libtestshell_dep = declare_dependency(
+              sources : generated_sources,
   include_directories : top_inc,
             link_with : libtestshell
 )
diff --git a/tests/datetime/meson.build b/tests/datetime/meson.build
index 3e7a37851..c9f07877c 100644
--- a/tests/datetime/meson.build
+++ b/tests/datetime/meson.build
@@ -5,7 +5,6 @@ test_units = [
   'test-endianess',
 ]
 
-includes = [top_inc, include_directories('../../panels/datetime')]
 env = [
   'G_MESSAGES_DEBUG=all',
           'BUILDDIR=' + meson.current_build_dir(),
@@ -22,9 +21,7 @@ foreach unit: test_units
   exe = executable(
                     unit,
            [unit + '.c'],
-    include_directories : includes,
-           dependencies : common_deps + [m_dep],
-              link_with : [datetime_panel_lib],
+           dependencies : common_deps + [m_dep, datetime_panel_lib_dep],
                  c_args : cflags
   )
 endforeach