From 400dd74ad6f3d68ca07e61a8b3ade9e07ba2ba68 Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vincent.sanders@collabora.co.uk>
Date: Fri, 19 Apr 2013 11:57:02 +0100
Subject: Add a dist target to generate source distribution tarballs from the
 most recent git tag

---
 makefiles/Makefile.top | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'makefiles')

diff --git a/makefiles/Makefile.top b/makefiles/Makefile.top
index bd7cddd..f9f21df 100644
--- a/makefiles/Makefile.top
+++ b/makefiles/Makefile.top
@@ -47,6 +47,7 @@
 # coverage		Determine test suite coverage (requires lcov)
 # profile		Build with profiling support enabled (requires gprof)
 # docs			Produce documentation (requires doxygen)
+# dist                  Produce release tarball from latest git tag
 # clean			Clean the build
 # distclean		Remove distribution files, too
 # install		Install component into prefix.
@@ -236,6 +237,22 @@ profile: __partial_clean test
 docs: $(BUILDDIR)/stamp
 	$(Q)$(DOXYGEN) build/Doxyfile
 
+# Distribution
+# This constructs a distribution tar from the last git tag. It ensures
+#   the Makefile component version matches the git tag version and the 
+#   tar is apropriately named for the component being generated
+dist:
+	$(eval GIT_TAG := $(shell git describe --abbrev=0 --match "v*"))
+	$(eval GIT_VER := $(shell x="$(GIT_TAG)"; echo "$${x#v}"))
+	$(if $(subst $(GIT_VER),,$(COMPONENT_VERSION)), $(error Component Version "$(COMPONENT_VERSION)" and GIT tag version "$(GIT_VER)" do not match))
+ifeq ($(findstring lib,$(COMPONENT_TYPE)),lib)
+	$(eval DIST_FILE := lib$(COMPONENT)-${GIT_VER})
+else
+	$(eval DIST_FILE := $(COMPONENT)-${GIT_VER})
+endif
+	$(Q)git archive --format=tar.gz --prefix=$(DIST_FILE)/ -o $(DIST_FILE).tar.gz $(GIT_TAG)
+
+
 # Clean build tree
 __partial_clean:
 	-$(Q)$(RM) $(RMFLAGS) $(CLEAN_ITEMS)
-- 
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