[gtk+] Use newer glib-genmarshal to simplify build rules

[Emmanuele Bassi <ebassi src gnome org>]

commit ce861bc43050c657c3baf7b655dc76fe554e46b0
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Jul 11 11:39:59 2017 +0100

    Use newer glib-genmarshal to simplify build rules
    
    The glib-genmarshal tool from GLib 2.54 added various command line
    arguments that allow us to remove a bunch of as hoc manipulations of
    the generated marshaller source files. The marshal generator tool can
    now include an header in the source, and undef the G_ENABLE_DEBUG
    pre-processor symbol for us. It can also generate the prototypes of the
    marshallers in the C source, and avoid a 'missing-prototypes' compiler
    warning.

 gdk/Makefile.am |    1 +
 gtk/Makefile.am |   14 ++++++++------
 2 files changed, 9 insertions(+), 6 deletions(-)
---
diff --git a/gdk/Makefile.am b/gdk/Makefile.am
index 6fbd478..d830cef 100644
--- a/gdk/Makefile.am
+++ b/gdk/Makefile.am
@@ -426,6 +426,7 @@ gdkmarshalers.c: gdkmarshalers.list
        $(AM_V_GEN) $(GLIB_GENMARSHAL) \
                --prefix=_gdk_marshal \
                --body \
+               --prototypes \
                $(srcdir)/gdkmarshalers.list > gdkmarshalers-c.tmp      \
        && mv gdkmarshalers-c.tmp gdkmarshalers.c \
        || ( rm -f gdkmarshalers-c.tmp && exit 1 )
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index d204ba2..826eeb4 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -1196,19 +1196,21 @@ gtkmarshalers.h: stamp-gtkmarshalers.h
        @true
 stamp-gtkmarshalers.h: gtkmarshalers.list
        $(AM_V_GEN) $(GLIB_GENMARSHAL) \
-               --prefix=_gtk_marshal \
                --header \
+               --prefix=_gtk_marshal \
                --valist-marshallers \
-               $(srcdir)/gtkmarshalers.list >> xgen-gmlh \
+               $(srcdir)/gtkmarshalers.list > xgen-gmlh \
        && (cmp -s xgen-gmlh gtkmarshalers.h || cp xgen-gmlh gtkmarshalers.h) \
        && rm -f xgen-gmlh \
        && echo timestamp > $(@F)
 gtkmarshalers.c: gtkmarshalers.list
-       $(AM_V_GEN) (echo "#undef G_ENABLE_DEBUG"; \
-        $(GLIB_GENMARSHAL) \
-               --prefix=_gtk_marshal \
+       $(AM_V_GEN) $(GLIB_GENMARSHAL) \
                --body \
-               --valist-marshallers $(srcdir)/gtkmarshalers.list) >> xgen-gmlc \
+               --prefix=_gtk_marshal \
+               --valist-marshallers \
+               --include-header="gtkmarshalers.h" \
+               -U G_ENABLE_DEBUG \
+               $(srcdir)/gtkmarshalers.list > xgen-gmlc \
        && cp xgen-gmlc gtkmarshalers.c \
        && rm -f xgen-gmlc