Make the current revision number available

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403444

Makefile.in

@@ -42,7 +42,7 @@ SDLMAIN_OBJECTS = @SDLMAIN_OBJECTS@
 
 DIST = acinclude.m4 autogen.sh Borland.html Borland.zip BUGS build-scripts configure configure.in COPYING CREDITS docs docs.html include INSTALL Makefile.dc Makefile.minimal Makefile.in README* sdl-config.in sdl.m4 sdl.pc.in SDL.qpg.in SDL.spec SDL.spec.in src test TODO VisualC.html VisualC VisualCE Watcom-OS2.zip Watcom-Win32.zip WhatsNew Xcode
 
-HDRS = SDL.h SDL_audio.h SDL_cdrom.h SDL_compat.h SDL_cpuinfo.h SDL_endian.h SDL_error.h SDL_events.h SDL_haptic.h SDL_joystick.h SDL_keyboard.h SDL_keysym.h SDL_loadso.h SDL_main.h SDL_mouse.h SDL_mutex.h SDL_name.h SDL_opengl.h SDL_pixels.h SDL_platform.h SDL_quit.h SDL_rect.h SDL_rwops.h SDL_scancode.h SDL_stdinc.h SDL_surface.h SDL_syswm.h SDL_thread.h SDL_timer.h SDL_types.h SDL_version.h SDL_video.h begin_code.h close_code.h
+HDRS = SDL.h SDL_audio.h SDL_cdrom.h SDL_compat.h SDL_cpuinfo.h SDL_endian.h SDL_error.h SDL_events.h SDL_haptic.h SDL_joystick.h SDL_keyboard.h SDL_keysym.h SDL_loadso.h SDL_main.h SDL_mouse.h SDL_mutex.h SDL_name.h SDL_opengl.h SDL_pixels.h SDL_platform.h SDL_quit.h SDL_rect.h SDL_revision.h SDL_rwops.h SDL_scancode.h SDL_stdinc.h SDL_surface.h SDL_syswm.h SDL_thread.h SDL_timer.h SDL_types.h SDL_version.h SDL_video.h begin_code.h close_code.h
 
 LT_AGE      = @LT_AGE@
 LT_CURRENT  = @LT_CURRENT@
@@ -63,7 +63,10 @@ Makefile: $(srcdir)/Makefile.in
 $(objects):
 	$(SHELL) $(auxdir)/mkinstalldirs $@
 
-.PHONY: all depend install install-bin install-hdrs install-lib install-data install-man uninstall uninstall-bin uninstall-hdrs uninstall-lib uninstall-data uninstall-man clean distclean dist
+update-revision:
+	$(SHELL) $(auxdir)/updaterev.sh
+
+.PHONY: all update-revision depend install install-bin install-hdrs install-lib install-data install-man uninstall uninstall-bin uninstall-hdrs uninstall-lib uninstall-data uninstall-man clean distclean dist
 depend:
 	@SOURCES="$(SOURCES)" INCLUDE="$(INCLUDE)" output="$(depend)" \
 	$(SHELL) $(auxdir)/makedep.sh
@@ -75,7 +78,7 @@ depend:
 
 include $(depend)
 
-$(objects)/$(TARGET): $(OBJECTS)
+$(objects)/$(TARGET): update-revision $(OBJECTS)
 	$(LIBTOOL) --mode=link $(CC) -o $@ $(OBJECTS) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LT_LDFLAGS)
 
 $(objects)/$(SDLMAIN_TARGET): $(SDLMAIN_OBJECTS)
@@ -153,6 +156,7 @@ dist $(distfile):
 	$(SHELL) $(auxdir)/mkinstalldirs $(distdir)
 	tar cf - $(DIST) | (cd $(distdir); tar xf -)
 	cp $(distdir)/include/SDL_config.h.default $(distdir)/include/SDL_config.h
+	$(SHELL) $(distdir)/build-scripts/updaterev.sh
 	rm -rf `find $(distdir) -name .svn`
 	find $(distdir) \( \
 	    -name '*~' -o \
@@ -194,10 +198,4 @@ commit: indent
 
 # Create a SVN snapshot that people can run update on
 snapshot:
-	svn co http://svn.libsdl.org/trunk/SDL SDL-1.3
-	(cd SDL-1.3 && ./autogen.sh && rm -rf autom4te.cache)
-	cp SDL-1.3/include/SDL_config.h.default SDL-1.3/include/SDL_config.h
-	tar zcf $(HOME)/SDL-1.3.tar.gz SDL-1.3
-	rm -f $(HOME)/SDL-1.3.zip
-	zip -r $(HOME)/SDL-1.3.zip SDL-1.3
-	rm -rf SDL-1.3
+	$(SHELL) $(aux_dir)/snapshot.sh

build-scripts/showrev.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+#
+# Print the current source revision, if available
+
+srcdir=`dirname $0`/..
+
+if [ -d $srcdir/.svn ]; then
+    cd $srcdir
+    svnversion -c | sed -e 's,[0-9]*:\([0-9]*\)[A-Z]*,\1,'
+fi

build-scripts/snapshot.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+#
+# Generate a current snapshot from source control
+
+svn co http://svn.libsdl.org/trunk/SDL
+(cd SDL && ./autogen.sh && rm -rf autom4te.cache)
+sh SDL/build-scripts/updaterev.sh
+cp SDL/include/SDL_config.h.default SDL/include/SDL_config.h
+
+major=`fgrep "#define SDL_MAJOR_VERSION" SDL/include/SDL_version.h | \
+       sed 's,[^0-9]*\([0-9]*\),\1,'`
+minor=`fgrep "#define SDL_MINOR_VERSION" SDL/include/SDL_version.h | \
+       sed 's,[^0-9]*\([0-9]*\),\1,'`
+patch=`fgrep "#define SDL_PATCHLEVEL" SDL/include/SDL_version.h | \
+       sed 's,[^0-9]*\([0-9]*\),\1,'`
+rev=`fgrep "#define SDL_REVISION" SDL/include/SDL_revision.h | \
+       sed 's,[^0-9]*\([0-9]*\),\1,'`
+path="SDL-$major.$minor.$patch-$rev"
+
+mv SDL $path
+tar zcf $path.tar.gz $path
+rm -f $path.zip
+zip -r $path.zip $path
+rm -rf $path

build-scripts/updaterev.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+#
+# Generate a header file with the current source revision
+
+cd `dirname $0`
+srcdir=..
+header=$srcdir/include/SDL_revision.h
+
+rev=`sh showrev.sh`
+if [ "$rev" != "" ]; then
+    echo "#define SDL_REVISION $rev" >$header.new
+    if diff $header $header.new >/dev/null 2>&1; then
+        rm $header.new
+    else
+        mv $header.new $header
+    fi
+fi

include/SDL_version.h

@@ -30,6 +30,7 @@
 #define _SDL_version_h
 
 #include "SDL_stdinc.h"
+#include "SDL_revision.h"
 
 #include "begin_code.h"
 /* Set up for C function definitions, even when using C++ */
@@ -131,6 +132,12 @@ typedef struct SDL_version
  */
 extern DECLSPEC void SDLCALL SDL_GetVersion(SDL_version * ver);
 
+/**
+ * \fn int SDL_GetRevision()
+ * \brief Get the code revision of SDL that is linked against your program.
+ */
+extern DECLSPEC int SDLCALL SDL_GetRevision();
+
 /* Ends C function definitions when using C++ */
 #ifdef __cplusplus
 /* *INDENT-OFF* */

src/SDL.c

@@ -296,6 +296,13 @@ SDL_GetVersion(SDL_version * ver)
     SDL_VERSION(ver);
 }
 
+/* Get the library source revision */
+int
+SDL_GetRevision()
+{
+    SDL_REVISION;
+}
+
 #if defined(__OS2__)
 /* Building for OS/2 */
 #ifdef __WATCOMC__