libwlroots: Add shared library versioning

include/wlr/meson.build

@@ -1,10 +1,13 @@
 version_array = meson.project_version().split('.')
 version_data = configuration_data()
-version_data.set_quoted('WLR_VERSION_STR', meson.project_version())
-version_data.set('WLR_VERSION_MAJOR',      version_array[0])
-version_data.set('WLR_VERSION_MINOR',      version_array[1])
-version_data.set('WLR_VERSION_MICRO',      version_array[2])
-version_data.set('WLR_VERSION_NUM',        '(WLR_VERSION_MAJOR << 16) | (WLR_VERSION_MINOR << 8) | WLR_VERSION_MICRO')
+version_data.set_quoted('WLR_VERSION_STR',   meson.project_version())
+version_data.set('WLR_VERSION_MAJOR',        version_array[0])
+version_data.set('WLR_VERSION_MINOR',        version_array[1])
+version_data.set('WLR_VERSION_MICRO',        version_array[2])
+version_data.set('WLR_VERSION_NUM',          '(WLR_VERSION_MAJOR << 16) | (WLR_VERSION_MINOR << 8) | WLR_VERSION_MICRO')
+version_data.set('WLR_VERSION_API_CURRENT',  so_version[0])
+version_data.set('WLR_VERSION_API_REVISION', so_version[1])
+version_data.set('WLR_VERSION_API_AGE',      so_version[2])
 
 header_install_dir = 'include/@0@/wlr'.format(meson.project_name())
 configure_file(output: 'config.h',  install_dir: header_install_dir, configuration: conf_data)

meson.build

@@ -11,6 +11,11 @@ project(
 	],
 )
 
+# Format of so_version is CURRENT, REVISION, AGE.
+# See: https://autotools.io/libtool/version.html
+# for a reference about clean library versioning.
+so_version = ['0', '0', '0']
+
 add_project_arguments('-Wno-unused-parameter', language: 'c')
 add_project_arguments(
 	'-DWLR_SRC_DIR="@0@"'.format(meson.source_root()),
@@ -137,7 +142,8 @@ wlr_deps = [
 ]
 
 lib_wlr = library(
-	'wlroots',
+	meson.project_name(),
+	version: '.'.join(so_version),
 	link_whole: wlr_parts,
 	dependencies: wlr_deps,
 	include_directories: wlr_inc,