Import glib-gen.mk from gstreamer

1 files changed, 44 insertions, 0 deletions

diff --git a/common/glib-gen.mak b/common/glib-gen.mak
new file mode 100644
index 00000000..f9027da9
--- /dev/null
+++ b/common/glib-gen.mak
@@ -0,0 +1,44 @@
+# these are the variables your Makefile.am should set
+# the example is based on the colorbalance interface
+
+#glib_enum_headers=$(colorbalance_headers)
+#glib_enum_define=GST_COLOR_BALANCE
+#glib_enum_prefix=gst_color_balance
+
+enum_headers=$(foreach h,$(glib_enum_headers),\n\#include \"$(h)\")
+
+# these are all the rules generating the relevant files
+%-marshal.h: %-marshal.list
+	glib-genmarshal --header --prefix=$(glib_enum_prefix)_marshal $^ > $*-marshal.h.tmp
+	mv $*-marshal.h.tmp $*-marshal.h
+
+%-marshal.c: %-marshal.list
+	echo "#include \"$*-marshal.h\"" >> $*-marshal.c.tmp
+	glib-genmarshal --body --prefix=$(glib_enum_prefix)_marshal $^ >> $*-marshal.c.tmp
+	mv $*-marshal.c.tmp $*-marshal.c
+
+%-enumtypes.h: $(glib_enum_headers)
+	glib-mkenums \
+	--fhead "#ifndef __$(glib_enum_define)_ENUM_TYPES_H__\n#define __$(glib_enum_define)_ENUM_TYPES_H__\n\n#include <glib-object.h>\n\nG_BEGIN_DECLS\n" \
+	--fprod "\n/* enumerations from \"@filename@\" */\n" \
+	--vhead "GType @enum_name@_get_type (void);\n#define GST_TYPE_@ENUMSHORT@ (@enum_name@_get_type())\n"         \
+	--ftail "G_END_DECLS\n\n#endif /* __$(glib_enum_define)_ENUM_TYPES_H__ */" \
+	$^ > $@
+
+%-enumtypes.c: $(glib_enum_headers)
+	@if test "x$(glib_enum_headers)" == "x"; then echo "ERROR: glib_enum_headers is empty, please fix Makefile"; exit 1; fi
+	glib-mkenums \
+	--fhead "#include \"$*-enumtypes.h\"\n$(enum_headers)" \
+	--fprod "\n/* enumerations from \"@filename@\" */" \
+	--vhead "GType\n@enum_name@_get_type (void)\n{\n  static GType etype = 0;\n  if (etype == 0) {\n    static const G@Type@Value values[] = {"     \
+	--vprod "      { @VALUENAME@, \"@VALUENAME@\", \"@valuenick@\" }," \
+	--vtail "      { 0, NULL, NULL }\n    };\n    etype = g_@type@_register_static (\"@EnumName@\", values);\n  }\n  return etype;\n}\n" \
+	$^ > $@
+
+# a hack rule to make sure .Plo files exist because they get include'd
+# from Makefile's
+.deps/%-marshal.Plo:
+	touch $@
+
+.deps/%-enumtypes.Plo:
+	touch $@