build-sys: add changelog target

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/Makefile.am b/Makefile.am
index 43b28967eea6485277ca3ecafb6f6a687c7e8b59..03255592691ecf879321b9e8fb421b15febee4d3 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -99,3 +99,14 @@ BUILT_SOURCES = .version
 .version:
        echo $(VERSION) > $@-t && mv $@-t $@
 
+CHANGELOG_FILE = v$(VERSION)-ChangeLog
+changelog:
+       if test "x$$PREVIOUS_VERSION" == "x"; then \
+               echo "Usage make changelog PREVIOUS_VERSION=<version>"; \
+               exit 1; \
+       fi
+       @ echo "Changes between v$(PREVIOUS_VERSION) and v$(VERSION)" > $(CHANGELOG_FILE)
+       @ echo "--------------------------------------------" >> $(CHANGELOG_FILE)
+       @ echo >> $(CHANGELOG_FILE)
+       $(AM_V_GEN) git log --stat v$(PREVIOUS_VERSION)..HEAD >> $(CHANGELOG_FILE)
+