Meson build: Fix versioning on macOS

kjellahl · kjellahl · commit f5d6165d93ae · 2020-10-02T13:17:17.000+02:00
See libsigcplusplus, pull request 65
diff --git a/libxml++/meson.build b/libxml++/meson.build
@@ -1,7 +1,7 @@
 # libxml++
 
 # Input: xmlxx_build_dep, xmlxx_pcname, xmlxx_libversion, xmlxx_api_version,
-#        install_includedir, xmlxx_rc, xmlxx_libname
+#        install_includedir, xmlxx_rc, xmlxx_libname, macos_darwin_versions
 # Output: source_h_files, xmlxx_dep
 
 # There are no built source files in libxml++-5.0.
@@ -106,6 +106,7 @@ xmlxx_library = library(xmlxx_libname,
   source_cc_files,
   extra_xmlxx_objects,
   version: xmlxx_libversion,
+  darwin_versions: macos_darwin_versions,
   include_directories: extra_include_dirs,
   cpp_args: xmlxx_cpp_args,
   dependencies: xmlxx_build_dep,
diff --git a/meson.build b/meson.build
@@ -29,7 +29,12 @@ libtool_soversion = [1, 0, 0]
 xmlxx_libversion = '@0@.@1@.@2@'.format(
   libtool_soversion[0] - libtool_soversion[2],
   libtool_soversion[2],
-  libtool_soversion[1])
+  libtool_soversion[1]
+)
+macos_darwin_versions = [
+  libtool_soversion[0] + 1,
+  '@0@.@1@'.format(libtool_soversion[0] + 1, libtool_soversion[1])
+]
 
 # Use these instead of meson.source_root() and meson.build_root() in subdirectories.
 # source_root() and build_root() are not useful, if this is a subproject.
