[gtkmm] gdk/meson.build: Set MSVC_TOOLSET_VER in conf data

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 546581c1c5c36181744372c04b902db136de2a35
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Wed Jul 1 15:47:09 2020 +0200

    gdk/meson.build: Set MSVC_TOOLSET_VER in conf data

 gdk/meson.build | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gdk/meson.build b/gdk/meson.build
index 7ebf3a3e..09fba715 100644
--- a/gdk/meson.build
+++ b/gdk/meson.build
@@ -3,7 +3,7 @@
 # Input: install_prefix, install_libdir, install_datadir, install_includedir,
 #        gtkmm_pcname, gtkmm_api_version, gtkmm_requires, build_deprecated_api,
 #        cpp_compiler, gtkmm_major_version, gtkmm_minor_version,
-#        gtkmm_micro_version, build_atkmm_api
+#        gtkmm_micro_version, build_atkmm_api, msvc14x_toolset_ver
 # Output: pkg_conf_data, install_gdkmmconfigdir, gdkmmconfig_h
 
 pkg_conf_data = configuration_data()
@@ -18,6 +18,7 @@ pkg_conf_data.set('PACKAGE_VERSION', meson.project_version())
 pkg_conf_data.set('GTKMM_MODULE_NAME', gtkmm_pcname)
 pkg_conf_data.set('GTKMM_API_VERSION', gtkmm_api_version)
 pkg_conf_data.set('GTKMM_MODULES', gtkmm_requires)
+pkg_conf_data.set('MSVC_TOOLSET_VER', msvc14x_toolset_ver)
 if not build_deprecated_api
   pkg_conf_data.set('GDKMM_DISABLE_DEPRECATED', 1)
   pkg_conf_data.set('GTKMM_DISABLE_DEPRECATED', 1)