[json-glib] build: Reduce the internal dependencies

[Emmanuele Bassi <ebassi src gnome org>]

commit c623283f7177fd9d832de282aa38542642ce4082
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Mar 13 15:16:33 2017 +0000

    build: Reduce the internal dependencies
    
    We don't need to make internal targets depend on generated sources, just
    on the generated header files. Depending on the generated sources will
    cause Meson to compile the generated sources once for each internal
    target.

 json-glib/meson.build |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)
---
diff --git a/json-glib/meson.build b/json-glib/meson.build
index 080d073..747bf8b 100644
--- a/json-glib/meson.build
+++ b/json-glib/meson.build
@@ -49,10 +49,11 @@ version_data.set('JSON_MINOR_VERSION', json_version_minor)
 version_data.set('JSON_MICRO_VERSION', json_version_micro)
 version_data.set('JSON_VERSION', meson.project_version())
 
-version_h = configure_file(input: 'json-version.h.in',
-                           output: 'json-version.h',
-                           install_dir: install_header_dir,
-                           configuration: version_data)
+json_version_h = configure_file(input: 'json-version.h.in',
+                                output: 'json-version.h',
+                                install_dir: install_header_dir,
+                                install: true,
+                                configuration: version_data)
 
 install_headers(source_h, subdir: install_header_subdir)
 
@@ -73,9 +74,8 @@ if host_system == 'darwin'
   common_ldflags += [ '-compatibility_version=1', '-current_version=1.0', ]
 endif
 
-
 json_lib = library('json-glib-1.0',
-                   source_c,
+                   source_c + json_glib_enums,
                    version: libversion,
                    soversion: soversion,
                    include_directories: root_dir,
@@ -94,7 +94,6 @@ pkgg.generate(libraries: [ json_lib ],
               description: 'JSON Parser for GLib.',
               requires: 'glib-2.0 gio-2.0')
 
-json_gen_sources = [ json_glib_enums ]
 if build_gir
     gnome.generate_gir(json_lib,
                        sources: source_c + source_h,
@@ -108,10 +107,13 @@ if build_gir
                        extra_args: ['-DJSON_COMPILATION'])
 endif
 
+# Generated headers, used to declare the dependency for internal
+# targets
+json_gen_headers = [ json_version_h, json_glib_enums.get(1), ]
 json_glib_dep = declare_dependency(link_with: json_lib,
                                    include_directories: root_dir,
                                    dependencies: [ gobject_dep, gio_dep, ],
-                                   sources: json_gen_sources)
+                                   sources: json_gen_headers)
 
 tools = [
   [ 'json-glib-validate', [ 'json-glib-validate.c', ] ],