[libdazzle] build: Fix macOS versioning

[Christian Hergert <chergert src gnome org>]

commit c8ac1f3a0888743d91cb5d48ce4ba55c0002d20a
Author: Tom Schoonjans <Tom Schoonjans diamond ac uk>
Date:   Wed Mar 13 11:28:34 2019 +0000

    build: Fix macOS versioning

 meson.build     | 4 +++-
 src/meson.build | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index e468303..c0b7538 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project('libdazzle', 'c',
           version: '3.32.0',
           license: 'GPLv3+',
-    meson_version: '>= 0.47.2',
+    meson_version: '>= 0.48.0',
   default_options: [ 'warning_level=1', 'buildtype=debugoptimized', 'c_std=gnu11' ],
 )
 
@@ -26,6 +26,8 @@ current = dazzle_version_minor * 100 + dazzle_version_micro - dazzle_interface_a
 revision = dazzle_interface_age
 libversion = '@0@.@1@.@2@'.format(soversion, current, revision)
 
+darwin_versions = [current + 1, '@0@.@1@'.format(current + 1, revision)]
+
 config_h = configuration_data()
 config_h.set_quoted('GETTEXT_PACKAGE', 'libdazzle')
 config_h.set_quoted('LOCALEDIR', join_paths(get_option('prefix'), get_option('localedir')))
diff --git a/src/meson.build b/src/meson.build
index 111b7e5..d263b86 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -100,7 +100,7 @@ endif
 libdazzle = shared_library(
   'dazzle-' + apiversion,
   libdazzle_sources,
-
+      darwin_versions: darwin_versions,
             soversion: 0,
                c_args: libdazzle_args + release_args,
          dependencies: libdazzle_deps,