pkgconfig: Generate the pkg-config with meson too

meson.build

@@ -269,6 +269,7 @@ subdir('sys')
 subdir('ext')
 subdir('tests')
 subdir('po')
+subdir('pkgconfig')
 
 configure_file(input : 'config.h.meson',
   output : 'config.h',

pkgconfig/gstreamer-plugins-good.pc.in

@@ -0,0 +1,14 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@/gstreamer-@GST_API_VERSION@
+pluginsdir=@libdir@/gstreamer-@GST_API_VERSION@
+
+
+Name: GStreamer Good Plugin libraries
+Description: Streaming media framework, bad plugins libraries
+Requires: gstreamer-@GST_API_VERSION@
+Version: @VERSION@
+Libs: -L${libdir}
+Cflags: -I${includedir}
+

pkgconfig/meson.build

@@ -0,0 +1,31 @@
+pkgconf = configuration_data()
+
+pkgconf.set('prefix', get_option('prefix'))
+pkgconf.set('exec_prefix', '${prefix}')
+pkgconf.set('libdir', '${prefix}/@0@'.format(get_option('libdir')))
+pkgconf.set('includedir', '${prefix}/@0@'.format(get_option('includedir')))
+pkgconf.set('GST_API_VERSION', api_version)
+pkgconf.set('VERSION', gst_version)
+
+# needed for generating -uninstalled.pc files
+pkgconf.set('abs_top_builddir', join_paths(meson.current_build_dir(), '..'))
+pkgconf.set('abs_top_srcdir', join_paths(meson.current_source_dir(), '..'))
+
+pkg_install_dir = '@0@/pkgconfig'.format(get_option('libdir'))
+
+pkg_files = ['gstreamer-plugins-good']
+
+foreach p : pkg_files
+  infile = p + '.pc.in'
+  outfile = p + '-1.0.pc'
+  configure_file(input : infile,
+    output : outfile,
+    configuration : pkgconf,
+    install_dir : pkg_install_dir)
+
+  infile = p + '-uninstalled.pc.in'
+  outfile = p + '-1.0-uninstalled.pc'
+  configure_file(input : infile,
+    output : outfile,
+    configuration : pkgconf)
+endforeach