Make the current revision number available

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

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