meson: Add macOS libtool versioning for ABI compatibility

With this, the compatibility version and current version values in macOS
and iOS dylibs will match the values set by Autotools.

See: mesonbuild/meson#1451

gio/meson.build

@@ -786,6 +786,7 @@ libgio = library('gio-2.0',
   gio_dtrace_hdr, gio_dtrace_obj,
   version : library_version,
   soversion : soversion,
+  darwin_versions : darwin_versions,
   install : true,
   include_directories : [configinc, gioinc],
   link_with : internal_deps,

glib/meson.build

@@ -239,6 +239,7 @@ libglib = library('glib-2.0',
   sources : [deprecated_sources, glib_sources],
   version : library_version,
   soversion : soversion,
+  darwin_versions : darwin_versions,
   install : true,
   # intl.lib is not compatible with SAFESEH
   link_args : [noseh_link_args, glib_link_flags, win32_ldflags],

gmodule/meson.build

@@ -99,6 +99,7 @@ libgmodule = library('gmodule-2.0',
   sources : gmodule_sources,
   version : library_version,
   soversion : soversion,
+  darwin_versions : darwin_versions,
   install : true,
   include_directories : [configinc, gmoduleinc],
   dependencies : [libdl_dep, libglib_dep],

gobject/meson.build

@@ -66,6 +66,7 @@ libgobject = library('gobject-2.0',
   sources : gobject_sources,
   version : library_version,
   soversion : soversion,
+  darwin_versions : darwin_versions,
   install : true,
   include_directories : [configinc],
   dependencies : [libffi_dep, libglib_dep],

gthread/meson.build

@@ -16,6 +16,7 @@ libgthread = library('gthread-2.0',
   sources : gthread_sources,
   version : library_version,
   soversion : soversion,
+  darwin_versions : darwin_versions,
   install : true,
   dependencies : [libglib_dep],
   c_args : ['-DG_LOG_DOMAIN="GThread"' ] + glib_hidden_visibility_args,

meson.build

@@ -1,6 +1,6 @@
 project('glib', 'c', 'cpp',
   version : '2.57.3',
-  meson_version : '>= 0.47.0',
+  meson_version : '>= 0.48',
   default_options : [
     'buildtype=debugoptimized',
     'warning_level=1',
@@ -45,7 +45,9 @@ binary_age = 100 * minor_version + micro_version
 soversion = 0
 # Maintain compatibility with previous libtool versioning
 # current = minor * 100 + micro
-library_version = '@0@.@1@.@2@'.format(soversion, binary_age - interface_age, interface_age)
+current = binary_age - interface_age
+library_version = '@0@.@1@.@2@'.format(soversion, current, interface_age)
+darwin_versions = [current + 1, '@0@.@1@'.format(current + 1, interface_age)]
 
 configinc = include_directories('.')
 glibinc = include_directories('glib')