[dietlibc] makefile: added target to fetch the github patch

[ensc]

commit 2ed074850186d436b065d0581b1e1ca58ae17fcf
Author: Enrico Scholz <enrico.scholz at informatik.tu-chemnitz.de>
Date:   Sat Mar 31 16:01:11 2012 +0200

    makefile: added target to fetch the github patch

 Makefile |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/Makefile b/Makefile
index c64dfb6..b274c60 100644
--- a/Makefile
+++ b/Makefile
@@ -2,11 +2,25 @@ MAKEFILE_COMMON = $(HOME)/.fedora/common.mk
 -include $(MAKEFILE_COMMON)
 
 CVS ?=		cvs
+GIT ?=		git
 TAR ?=		tar
+GZIP ?=		gzip
 CVS_BASEVER =	0.33
 CVS_DATE :=	$(shell date +'%Y%m%d' -d '-1 day')
+GIT_URL =	git://github.com/ensc/dietlibc.git
+GIT_DIFF_OPTS =	--summary --stat --patch
+GIT_BRANCH_OLD =  CVS
+GIT_BRANCH_NEW =  master
 _cvs_suffix =	${CVS_BASEVER}.${CVS_DATE}
 
 cvs-sources:
 	cd ${DESTDIR} . && $(CVS) -d :pserver:cvs at cvs.fefe.de:/cvs -z9 export -D${CVS_DATE} -d dietlibc-${_cvs_suffix} dietlibc
 	cd ${DESTDIR} . && $(TAR) cJf dietlibc-${_cvs_suffix}.tar.xz dietlibc-${_cvs_suffix} --owner root --group root
+
+git-patch:
+	cd ${DESTDIR} . && $(GIT) clone --mirror $(GIT_URL) dietlibc.git
+	cd ${DESTDIR} . && cd dietlibc.git && { \
+	ref=`git ls-remote . refs/heads/$(GIT_BRANCH_NEW) | cut -f 1` && \
+	$(GIT) diff $(GIT_DIFF_OPTS) $(GIT_BRANCH_OLD)..$(GIT_BRANCH_NEW) > diff && \
+	$(GZIP) -c < diff > ../dietlibc-github-$$ref.patch.gz ; }
+	cd ${DESTDIR} . && rm -rf dietlibc.git