gdk/win32: Split out sources listing

This way, we can reuse this list in other non-autotools Makefile-based
build systems.

gdk/win32/Makefile.am

@@ -1,5 +1,6 @@
 ## Process this file with automake to produce Makefile.in
 include $(top_srcdir)/Makefile.decl
+include gdk-win32-sources.inc
 
 libgdkincludedir = $(includedir)/gtk-3.0/gdk
 libgdkwin32includedir = $(includedir)/gtk-3.0/gdk/win32
@@ -35,79 +36,11 @@ EXTRA_DIST += \
 	makefile.msc \
 	meson.build
 
-libgdk_win32_la_SOURCES = \
-	gdkcursor-win32.c \
-	gdkdevicemanager-win32.c \
-	gdkdevicemanager-win32.h \
-	gdkdevice-virtual.c \
-	gdkdevice-virtual.h \
-	gdkdevice-win32.c \
-	gdkdevice-win32.h \
-	gdkdevice-winpointer.c \
-	gdkdevice-winpointer.h \
-	gdkdevice-wintab.c \
-	gdkdevice-wintab.h \
-	gdkdisplay-win32.c \
-	gdkdisplay-win32.h \
-	gdkdisplaymanager-win32.c \
-	gdkdnd-win32.c \
-	gdkevents-win32.c \
-	gdkgeometry-win32.c \
-	gdkglcontext-win32.c \
-	gdkglcontext-win32.h \
-	gdkglobals-win32.c \
-	gdkkeys-win32.c \
-	gdkkeys-win32.h \
-	gdkkeys-win32-impl.c \
-	gdkkeys-win32-impl-wow64.c \
-	gdkmain-win32.c \
-	gdkmonitor-win32.c \
-	gdkmonitor-win32.h \
-	gdkprivate-win32.h \
-	gdkproperty-win32.c \
-	gdkscreen-win32.c \
-	gdkselection-win32.c \
-	gdkselection-win32.h \
-	gdktestutils-win32.c \
-	gdkwin32cursor.h \
-	gdkwin32display.h \
-	gdkwin32displaymanager.h \
-	gdkwin32dnd.h \
-	gdkwin32dnd-private.h \
-	gdkwin32glcontext.h \
-	gdkwin32langnotification.c \
-	gdkwin32langnotification.h \
-	gdkwin32.h \
-	gdkwin32id.c \
-	gdkwin32keys.h \
-	gdkwin32monitor.h \
-	gdkwin32screen.h \
-	gdkwin32window.h \
-	gdkwindow-win32.c \
-	gdkwindow-win32.h \
-	pktdef.h \
-	winpointer.h \
-	wintab.h \
-	xcursors.h
-
 libgdk_win32_la_LIBADD = \
 	$(LDADDS) \
 	$(NULL)
 
-libgdkinclude_HEADERS =		\
+libgdkinclude_HEADERS = $(GDK_PUBLIC_H_SRCS_WIN32)
-	gdkwin32.h
-
-libgdkwin32include_HEADERS =	\
-	gdkwin32cursor.h	\
-	gdkwin32display.h	\
-	gdkwin32displaymanager.h\
-	gdkwin32dnd.h		\
-	gdkwin32glcontext.h	\
-	gdkwin32keys.h		\
-	gdkwin32misc.h		\
-	gdkwin32monitor.h	\
-	gdkwin32screen.h	\
-	gdkwin32window.h
 
 # ------------------- MSVC Build Items ----------------
 MSVCPROJS = gdk3-win32

gdk/win32/gdk-win32-sources.inc

@@ -0,0 +1,72 @@
+# Public header list for GdkWin32
+
+GDK_PUBLIC_H_SRCS_WIN32 =		\
+	gdkwin32.h
+
+libgdkwin32include_HEADERS =	\
+	gdkwin32cursor.h	\
+	gdkwin32display.h	\
+	gdkwin32displaymanager.h\
+	gdkwin32dnd.h		\
+	gdkwin32glcontext.h	\
+	gdkwin32keys.h		\
+	gdkwin32misc.h		\
+	gdkwin32monitor.h	\
+	gdkwin32screen.h	\
+	gdkwin32window.h
+
+# Sources list for GdkWin32
+libgdk_win32_la_SOURCES = \
+	gdkcursor-win32.c \
+	gdkdevicemanager-win32.c \
+	gdkdevicemanager-win32.h \
+	gdkdevice-virtual.c \
+	gdkdevice-virtual.h \
+	gdkdevice-win32.c \
+	gdkdevice-win32.h \
+	gdkdevice-winpointer.c \
+	gdkdevice-winpointer.h \
+	gdkdevice-wintab.c \
+	gdkdevice-wintab.h \
+	gdkdisplay-win32.c \
+	gdkdisplay-win32.h \
+	gdkdisplaymanager-win32.c \
+	gdkdnd-win32.c \
+	gdkevents-win32.c \
+	gdkgeometry-win32.c \
+	gdkglcontext-win32.c \
+	gdkglcontext-win32.h \
+	gdkglobals-win32.c \
+	gdkkeys-win32.c \
+	gdkkeys-win32.h \
+	gdkkeys-win32-impl.c \
+	gdkkeys-win32-impl-wow64.c \
+	gdkmain-win32.c \
+	gdkmonitor-win32.c \
+	gdkmonitor-win32.h \
+	gdkprivate-win32.h \
+	gdkproperty-win32.c \
+	gdkscreen-win32.c \
+	gdkselection-win32.c \
+	gdkselection-win32.h \
+	gdktestutils-win32.c \
+	gdkwin32cursor.h \
+	gdkwin32display.h \
+	gdkwin32displaymanager.h \
+	gdkwin32dnd.h \
+	gdkwin32dnd-private.h \
+	gdkwin32glcontext.h \
+	gdkwin32langnotification.c \
+	gdkwin32langnotification.h \
+	gdkwin32.h \
+	gdkwin32id.c \
+	gdkwin32keys.h \
+	gdkwin32monitor.h \
+	gdkwin32screen.h \
+	gdkwin32window.h \
+	gdkwindow-win32.c \
+	gdkwindow-win32.h \
+	pktdef.h \
+	winpointer.h \
+	wintab.h \
+	xcursors.h