build: Let gala provide a public library for 3rd party plugin development

configure.ac

@@ -2,7 +2,7 @@
 m4_define([gala_released], [0])
 
 m4_define([gala_major_version], [0])
-m4_define([gala_minor_version], [1])
+m4_define([gala_minor_version], [2])
 m4_define([gala_micro_version], [0])
 m4_define([gala_nano_version], [0])
 
@@ -251,6 +251,7 @@ AC_CONFIG_FILES([
 Makefile
 src/Makefile
 lib/Makefile
+lib/gala.pc
 docs/Makefile
 data/Makefile
 data/org.pantheon.desktop.gala.gschema.xml.in

lib/Makefile.am

@@ -6,9 +6,20 @@ BUILT_SOURCES = \
 	libgala_la_vala.stamp \
 	$(NULL)
 
-libgala_la_LTLIBRARIES = libgala.la
+libgalaincludedir = $(includedir)/gala
+nodist_libgalainclude_HEADERS = gala.h
 
-libgala_ladir = $(pkglibdir)
+vapidir = $(datadir)/vala/vapi
+nodist_vapi_DATA = \
+	gala.vapi \
+	gala.deps \
+	$(NULL)
+
+pkgconfigdir = $(libdir)/pkgconfig
+nodist_pkgconfig_DATA = gala.pc
+
+
+lib_LTLIBRARIES = libgala.la
 
 libgala_la_CFLAGS = \
 	$(GALA_CORE_CFLAGS) \
@@ -17,8 +28,12 @@ libgala_la_CFLAGS = \
 	$(NULL)
 
 libgala_la_LDFLAGS = \
-	-avoid-version \
+	$(AM_LDLAGS) \
 	$(GALA_CORE_LDFLAGS) \
+	-no-undefined \
+	-version-info "$(LT_CURRENT)":"$(LT_REVISION)":"$(LT_AGE)" \
+	-export-dynamic \
+	-export-symbols-regex '^gala_.*' \
 	$(NULL)
 
 libgala_la_VALAFLAGS = \
@@ -44,7 +59,9 @@ nodist_libgala_la_SOURCES = \
 	$(libgala_la_VALASOURCES:.vala=.c) \
 	$(NULL)
 
-libgala_la_vala.stamp: $(libgala_la_VALASOURCES)
+gala.h gala.vapi: libgala_la_vala.stamp
+
+libgala_la_vala.stamp: $(libgala_la_VALASOURCES) Makefile
 	$(AM_V_VALA)$(VALAC) \
 		$(libgala_la_VALAFLAGS) \
 		--basedir $(srcdir) \

lib/gala.deps

@@ -0,0 +1,5 @@
+clutter-gtk-1.0
+gdk-pixbuf-2.0
+glib-2.0
+gobject-2.0
+libmutter

lib/gala.pc.in

@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+pkgdatadir=@datadir@/gala
+
+Name: Gala
+Description: Library to develop plugins for Gala
+Version: @PACKAGE_VERSION@
+Requires: clutter-gtk-1.0 gdk-pixbuf-2.0 glib-2.0 gobject-2.0 libmutter
+Libs: -L${libdir} -lgala
+Cflags: -I${includedir}/gala

plugins/maskcorners/Makefile.am

@@ -42,7 +42,7 @@ nodist_libgala_maskcorners_la_SOURCES = \
 	$(libgala_maskcorners_la_VALASOURCES:.vala=.c) \
 	$(NULL)
 
-libgala_maskcorners_la_vala.stamp: $(libgala_maskcorners_la_VALASOURCES)
+libgala_maskcorners_la_vala.stamp: $(libgala_maskcorners_la_VALASOURCES) $(top_builddir)/lib/gala.vapi Makefile
 	$(AM_V_VALA)$(VALAC) \
 		$(libgala_maskcorners_la_VALAFLAGS) \
 		-C \

plugins/notify/Makefile.am

@@ -54,7 +54,7 @@ nodist_libgala_notify_la_SOURCES = \
 	$(libgala_notify_la_VALASOURCES:.vala=.c) \
 	$(NULL)
 
-libgala_notify_la_vala.stamp: $(libgala_notify_la_VALASOURCES)
+libgala_notify_la_vala.stamp: $(libgala_notify_la_VALASOURCES) $(top_builddir)/lib/gala.vapi Makefile
 	$(AM_V_VALA)$(VALAC) \
 		$(libgala_notify_la_VALAFLAGS) \
 		-C \

plugins/template/Makefile.am

@@ -41,7 +41,7 @@ nodist_libgala_template_la_SOURCES = \
 	$(libgala_template_la_VALASOURCES:.vala=.c) \
 	$(NULL)
 
-libgala_template_la_vala.stamp: $(libgala_template_la_VALASOURCES)
+libgala_template_la_vala.stamp: $(libgala_template_la_VALASOURCES) $(top_builddir)/lib/gala.vapi Makefile
 	$(AM_V_VALA)$(VALAC) \
 		$(libgala_template_la_VALAFLAGS) \
 		-C \

plugins/zoom/Makefile.am

@@ -41,7 +41,7 @@ nodist_libgala_zoom_la_SOURCES = \
 	$(libgala_zoom_la_VALASOURCES:.vala=.c) \
 	$(NULL)
 
-libgala_zoom_la_vala.stamp: $(libgala_zoom_la_VALASOURCES)
+libgala_zoom_la_vala.stamp: $(libgala_zoom_la_VALASOURCES) $(top_builddir)/lib/gala.vapi Makefile
 	$(AM_V_VALA)$(VALAC) \
 		$(libgala_zoom_la_VALAFLAGS) \
 		-C \

src/Makefile.am

@@ -87,7 +87,7 @@ nodist_gala_SOURCES = \
 	$(gala_VALASOURCES:.vala=.c) \
 	$(NULL)
 
-gala_vala.stamp: $(gala_VALASOURCES)
+gala_vala.stamp: $(gala_VALASOURCES) $(top_builddir)/lib/gala.vapi Makefile
 	$(AM_V_VALA)$(VALAC) \
 		$(gala_VALAFLAGS) \
 		--basedir $(srcdir) \