add version constants to auth, river and wireplumber libs

lib/river/include/astal-river.h.in

@@ -3,6 +3,13 @@
 
 #include <glib-object.h>
 
+
+#define ASTAL_RIVER_MAJOR_VERSION @MAJOR_VERSION@
+#define ASTAL_RIVER_MINOR_VERSION @MINOR_VERSION@
+#define ASTAL_RIVER_MICRO_VERSION @MICRO_VERSION@
+#define ASTAL_RIVER_VERSION "@VERSION@"
+
+
 G_BEGIN_DECLS
 
 #define ASTAL_RIVER_TYPE_OUTPUT (astal_river_output_get_type())

lib/river/include/meson.build

@@ -1,6 +1,17 @@
-astal_river_inc = include_directories('.')
-astal_river_headers = files(
-  'astal-river.h',
+
+config = configure_file(
+  input: 'astal-river.h.in',
+  output: 'astal-river.h',
+  configuration: {
+    'VERSION': meson.project_version(),
+    'MAJOR_VERSION': version_split[0],
+    'MINOR_VERSION': version_split[1],
+    'MICRO_VERSION': version_split[2],
+  },
 )
 
-install_headers('astal-river.h')
+
+astal_river_inc = include_directories('.')
+astal_river_headers = config
+
+install_headers(astal_river_headers)