[geocode-glib: 2/3] Build: add support for macOS dylib versioning

[Bastien Nocera <hadess src gnome org>]

commit 39a958c8f22a8eea0064086cdfde496cbf50f3a8
Author: Tom Schoonjans <Tom Schoonjans diamond ac uk>
Date:   Thu Mar 14 15:29:16 2019 +0000

    Build: add support for macOS dylib versioning

 geocode-glib/meson.build | 12 +++++++++++-
 meson.build              |  2 +-
 2 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/geocode-glib/meson.build b/geocode-glib/meson.build
index 137fedb..85f0f18 100644
--- a/geocode-glib/meson.build
+++ b/geocode-glib/meson.build
@@ -51,6 +51,15 @@ if cc.has_link_argument('-Wl,--version-script,' + gclib_map)
        link_args += ['-Wl,--version-script,' + gclib_map]
 endif
 
+version = '0.0.0'
+version_arr = version.split('.')
+major_version = version_arr[0].to_int()
+minor_version = version_arr[1].to_int()
+micro_version = version_arr[2].to_int()
+current = major_version + minor_version + 1
+interface_age = micro_version
+darwin_versions = [current, '@0@.@1@'.format(current, interface_age)]
+
 libgcglib = shared_library('geocode-glib',
                            sources,
                            dependencies: deps,
@@ -58,7 +67,8 @@ libgcglib = shared_library('geocode-glib',
                            link_depends: link_depends,
                            link_args: link_args,
                            soversion: '0',
-                           version: '0.0.0',
+                           version: version,
+                           darwin_versions: darwin_versions,
                            install: true)
 
 install_headers(headers, subdir: header_subdir)
diff --git a/meson.build b/meson.build
index 0873c6c..78e5079 100644
--- a/meson.build
+++ b/meson.build
@@ -1,4 +1,4 @@
-project('geocode-glib', 'c', version: '3.26.1')
+project('geocode-glib', 'c', version: '3.26.1', meson_version : '>= 0.48.0')
 
 gclib_version = meson.project_version() # set in project() below
 ver_arr = gclib_version.split('.')