meson: generate pkg-config -uninstalled pc files

Generating those files is useful for users building the GStreamer stack
using meson and having to link it to another project which is still
using the autotools.

While doing so, fix some -uninstalled pc files which were using a
suspicious 'pcfiledir' which was never replaced or defined.

https://bugzilla.gnome.org/show_bug.cgi?id=776810

pkgconfig/Makefile.am

@@ -35,7 +35,21 @@ cp_verbose_0 = @echo "  CP     $@";
 %-@GST_API_VERSION@.pc: %.pc
 	$(cp_verbose_0)cp $< $@
 %-@GST_API_VERSION@-uninstalled.pc: %-uninstalled.pc
-	$(cp_verbose_0)cp $< $@
+### the uninstalled libdir is depend of the build system used so set it here
+### rather than hardcoding it in the file directly.
+	$(AM_V_GEN) sed \
+		-e "s|[@]audiolibdir[@]|$(abs_top_builddir)/gst-libs/gst/audio/.libs|" \
+		-e "s|[@]baselibdir[@]|$(abs_top_builddir)/gst-libs/gst/base/.libs|" \
+		-e "s|[@]videolibdir[@]|$(abs_top_builddir)/gst-libs/gst/video/.libs|" \
+		-e "s|[@]codecparserslibdir[@]|$(abs_top_builddir)/gst-libs/gst/codecparsers/.libs|" \
+		-e "s|[@]gllibdir[@]|$(abs_top_builddir)/gst-libs/gst/gl/.libs|" \
+		-e "s|[@]insertbinlibdir[@]|$(abs_top_builddir)/gst-libs/gst/insertbin/.libs|" \
+		-e "s|[@]mpegtslibdir[@]|$(abs_top_builddir)/gst-libs/gst/mpegts/.libs|" \
+		-e "s|[@]playerlibdir[@]|$(abs_top_builddir)/gst-libs/gst/player/.libs|" \
+		-e "s|[@]waylandlibdir[@]|$(abs_top_builddir)/gst-libs/gst/wayland/.libs|" \
+		-e "s|[@]basecamerabinsrclibdir[@]|$(abs_top_builddir)/gst-libs/gst/basecamerabinsrc/.libs|" \
+		-e "s|[@]photographylibdir[@]|$(abs_top_builddir)/gst-libs/gst/interfaces/.libs|" \
+		$< > $@.tmp && mv $@.tmp $@
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = $(pcverfiles)

pkgconfig/gstreamer-bad-audio-uninstalled.pc.in

@@ -1,6 +1,6 @@
 prefix=
 exec_prefix=
-libdir=@abs_top_builddir@/gst-libs/gst/audio/.libs
+libdir=@audiolibdir@
 includedir=@abs_top_srcdir@/gst-libs
 
 Name: GStreamer bad audio library, uninstalled

pkgconfig/gstreamer-bad-base-uninstalled.pc.in

@@ -1,6 +1,6 @@
 prefix=
 exec_prefix=
-libdir=@abs_top_builddir@/gst-libs/gst/base/.libs
+libdir=@baselibdir@
 includedir=@abs_top_builddir@/gst-libs
 girdir=@abs_top_builddir@/gst-libs/gst/base
 typelibdir=@abs_top_builddir@/gst-libs/gst/base

pkgconfig/gstreamer-bad-video-uninstalled.pc.in

@@ -1,6 +1,6 @@
 prefix=
 exec_prefix=
-libdir=@abs_top_builddir@/gst-libs/gst/video/.libs
+libdir=@videolibdir@
 includedir=@abs_top_builddir@/gst-libs
 girdir=@abs_top_builddir@/gst-libs/gst/video
 typelibdir=@abs_top_builddir@/gst-libs/gst/video

pkgconfig/gstreamer-codecparsers-uninstalled.pc.in

@@ -1,7 +1,7 @@
 prefix=
 exec_prefix=
-libdir=${pcfiledir}/../gst-libs/gst/codecparsers/.libs
+libdir=@codecparserslibdir@
-includedir=${pcfiledir}/../gst-libs
+includedir=@abs_top_builddir@/gst-libs
 
 Name: GStreamer codec parsers, Uninstalled
 Description: Bitstream parsers for GStreamer elements, uninstalled

pkgconfig/gstreamer-gl-uninstalled.pc.in

@@ -1,6 +1,6 @@
 prefix=
 exec_prefix=
-libdir=@abs_top_builddir@/gst-libs/gst/gl/.libs
+libdir=@gllibdir@
 includedir=@abs_top_builddir@/gst-libs
 girdir=@abs_top_builddir@/gst-libs/gst/base
 typelibdir=@abs_top_builddir@/gst-libs/gst/base

pkgconfig/gstreamer-insertbin-uninstalled.pc.in

@@ -1,7 +1,7 @@
 prefix=
 exec_prefix=
-libdir=${pcfiledir}/../gst-libs/gst/insertbin/.libs
+libdir=@insertbinlibdir@
-includedir=${pcfiledir}/../gst-libs
+includedir=@abs_top_srcdir@/gst-libs
 
 Name: GStreamer Insert Bin, Uninstalled
 Description: Bin to automatically and insertally link elements, uninstalled

pkgconfig/gstreamer-mpegts-uninstalled.pc.in

@@ -1,7 +1,7 @@
 prefix=
 exec_prefix=
-libdir=${pcfiledir}/../gst-libs/gst/mpegts/.libs
+libdir=@mpegtslibdir@
-includedir=${pcfiledir}/../gst-libs
+includedir=@abs_top_srcdir@/gst-libs
 
 Name: GStreamer MPEG-TS, Uninstalled
 Description: GStreamer MPEG-TS support, uninstalled

pkgconfig/gstreamer-player-uninstalled.pc.in

@@ -1,7 +1,7 @@
 prefix=
 exec_prefix=
-libdir=${pcfiledir}/../gst-libs/gst/player/.libs
+libdir=@playerlibdir@
-includedir=${pcfiledir}/../gst-libs
+includedir=@abs_top_srcdir@/gst-libs
 
 Name: GStreamer Player, Uninstalled
 Description: GStreamer Player convenience library, uninstalled

pkgconfig/gstreamer-plugins-bad-uninstalled.pc.in

@@ -10,5 +10,5 @@ Name: GStreamer Bad Plugin libraries, Uninstalled
 Description: Streaming media framework, bad plugins libraries, uninstalled
 Version: @VERSION@
 Requires: gstreamer-@GST_API_VERSION@
-Libs: -L@abs_top_builddir@/gst-libs/gst/audio/.libs -L@abs_top_builddir@/gst-libs/gst/basecamerabinsrc/.libs -L@abs_top_builddir@/gst-libs/gst/codecparsers/.libs -L@abs_top_builddir@/gst-libs/gst/gl/.libs -L@abs_top_builddir@/gst-libs/gst/insertbin/.libs -L@abs_top_builddir@/gst-libs/gst/interfaces/.libs -L@abs_top_builddir@/gst-libs/gst/mpegts/.libs -L@abs_top_builddir@/gst-libs/gst/player/.libs -L@abs_top_builddir@/gst-libs/gst/signalprocessor/.libs -L@abs_top_builddir@/gst-libs/gst/video/.libs -L@abs_top_builddir@/gst-libs/gst/wayland/.libs
+Libs: -L@audiolibdir@ -L@basecamerabinsrclibdir@ -L@codecparserslibdir@ -L@gllibdir@ -L@insertbinlibdir@ -L@photographylibdir@ -L@mpegtslibdir@ -L@playerlibdir@ -L@videolibdir@ -L@waylandlibdir@
 Cflags: -I@abs_top_srcdir@/gst-libs -I@abs_top_builddir@/gst-libs

pkgconfig/gstreamer-wayland-uninstalled.pc.in

@@ -1,7 +1,7 @@
 prefix=
 exec_prefix=
-libdir=${pcfiledir}/../gst-libs/gst/wayland/.libs
+libdir=@waylandlibdir@
-includedir=${pcfiledir}/../gst-libs
+includedir=@abs_top_srcdir@/gst-libs
 
 Name: GStreamer Wayland, Uninstalled
 Description: GStreamer Wayland support, uninstalled

pkgconfig/meson.build

@@ -7,6 +7,21 @@ 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(), '..'))
+pkgconf.set('audiolibdir', join_paths(meson.build_root(), gstbadaudio.outdir()))
+pkgconf.set('baselibdir', join_paths(meson.build_root(), gstbadbase.outdir()))
+pkgconf.set('videolibdir', join_paths(meson.build_root(), gstbadvideo.outdir()))
+pkgconf.set('codecparserslibdir', join_paths(meson.build_root(), gstcodecparsers.outdir()))
+pkgconf.set('gllibdir', join_paths(meson.build_root(), gstgl.outdir()))
+pkgconf.set('insertbinlibdir', join_paths(meson.build_root(), gstinsertbin.outdir()))
+pkgconf.set('mpegtslibdir', join_paths(meson.build_root(), gstmpegts.outdir()))
+pkgconf.set('playerlibdir', join_paths(meson.build_root(), gstplayer.outdir()))
+pkgconf.set('waylandlibdir', join_paths(meson.build_root(), gstwayland.outdir()))
+pkgconf.set('basecamerabinsrclibdir', join_paths(meson.build_root(), gstbasecamerabin.outdir()))
+pkgconf.set('photographylibdir', join_paths(meson.build_root(), gstphotography.outdir()))
+
 pkg_install_dir = '@0@/pkgconfig'.format(get_option('libdir'))
 
 pkg_libs = [
@@ -25,7 +40,6 @@ if build_gstgl
   pkg_libs += 'gl'
 endif
 
-# FIXME: -uninstalled.pc files (if still needed?)
 foreach p : pkg_libs
   infile = 'gstreamer-@0@.pc.in'.format(p)
   outfile = 'gstreamer-@0@-@1@.pc'.format(p, api_version)
@@ -33,4 +47,10 @@ foreach p : pkg_libs
     output : outfile,
     configuration : pkgconf,
     install_dir : pkg_install_dir)
+
+  infile = 'gstreamer-@0@-uninstalled.pc.in'.format(p)
+  outfile = 'gstreamer-@0@-@1@-uninstalled.pc'.format(p, api_version)
+  configure_file(input : infile,
+    output : outfile,
+    configuration : pkgconf)
 endforeach