From c8b11fad42bdcff1d1e7ba93553ac2a4c99a8d36 Mon Sep 17 00:00:00 2001
From: George Kiagiadakis <george.kiagiadakis@collabora.com>
Date: Tue, 2 Jun 2020 18:26:40 +0300
Subject: [PATCH] lib: add a version header

---
 lib/wp/meson.build    | 17 ++++++++++++++---
 lib/wp/wp.c           |  2 +-
 lib/wp/wp.h           |  1 +
 lib/wp/wpversion.h.in |  2 ++
 meson.build           |  2 ++
 5 files changed, 20 insertions(+), 4 deletions(-)
 create mode 100644 lib/wp/wpversion.h.in

diff --git a/lib/wp/meson.build b/lib/wp/meson.build
index 0c0b75ad..12973670 100644
--- a/lib/wp/meson.build
+++ b/lib/wp/meson.build
@@ -64,7 +64,7 @@ wp_lib_headers = files(
 )
 
 install_headers(wp_lib_headers,
-  subdir : join_paths('wireplumber-' + wireplumber_api_version, 'wp')
+  install_dir : wireplumber_headers_dir
 )
 
 enums = gnome.mkenums_simple('wpenums',
@@ -72,14 +72,25 @@ enums = gnome.mkenums_simple('wpenums',
   header_prefix: '#include "wp/defs.h"',
   decorator: 'WP_API',
   install_header: true,
-  install_dir: join_paths(get_option('includedir'), 'wireplumber-' + wireplumber_api_version, 'wp'),
+  install_dir: wireplumber_headers_dir,
 )
 wpenums_h = enums[1]
 wpenums_c = enums[0]
 wp_gen_sources = [wpenums_h]
 
+wpversion_data = configuration_data()
+wpversion_data.set('version', meson.project_version())
+wpversion_data.set('api_version', wireplumber_api_version)
+wpversion = configure_file(
+  input : 'wpversion.h.in',
+  output : 'wpversion.h',
+  configuration : wpversion_data,
+  install_dir: wireplumber_headers_dir
+)
+wp_gen_sources += [wpversion]
+
 wp_lib = library('wireplumber-' + wireplumber_api_version,
-  wp_lib_sources, wpenums_c, wpenums_h,
+  wp_lib_sources, wpenums_c, wpenums_h, wpversion,
   c_args : [
     '-D_GNU_SOURCE',
     '-DG_LOG_USE_STRUCTURED',
diff --git a/lib/wp/wp.c b/lib/wp/wp.c
index ffcd9946..48100d66 100644
--- a/lib/wp/wp.c
+++ b/lib/wp/wp.c
@@ -48,7 +48,7 @@ wp_init (WpInitFlags flags)
     g_log_set_writer_func (wp_log_writer_default, NULL, NULL);
 
   /* a dummy message, to initialize the logging system */
-  wp_info ("WirePlumber initializing");
+  wp_info ("WirePlumber " WIREPLUMBER_VERSION " initializing");
 
   if (flags & WP_INIT_SET_PW_LOG && !g_getenv ("WIREPLUMBER_NO_PW_LOG")) {
     pw_log_level = lvl = wp_spa_log_get_instance ()->level;
diff --git a/lib/wp/wp.h b/lib/wp/wp.h
index b3aa43b4..d0277231 100644
--- a/lib/wp/wp.h
+++ b/lib/wp/wp.h
@@ -38,6 +38,7 @@
 #include "spa-type.h"
 #include "transition.h"
 #include "wpenums.h"
+#include "wpversion.h"
 
 G_BEGIN_DECLS
 
diff --git a/lib/wp/wpversion.h.in b/lib/wp/wpversion.h.in
new file mode 100644
index 00000000..1a7b5809
--- /dev/null
+++ b/lib/wp/wpversion.h.in
@@ -0,0 +1,2 @@
+#define WIREPLUMBER_VERSION "@version@"
+#define WIREPLUMBER_API_VERSION "@api_version@"
diff --git a/meson.build b/meson.build
index 598d92b2..dc3a3f17 100644
--- a/meson.build
+++ b/meson.build
@@ -12,6 +12,8 @@ project('wireplumber', ['c', 'cpp'],
 wireplumber_api_version = '0.1'
 wireplumber_so_version = '0'
 
+wireplumber_headers_dir = join_paths(get_option('includedir'), 'wireplumber-' + wireplumber_api_version, 'wp')
+
 if get_option('libdir').startswith('/')
   wireplumber_module_dir = join_paths(get_option('libdir'), 'wireplumber-' + wireplumber_api_version)
 else