[OS-BUILD PATCHv4 6/8] redhat: use new genlog.sh script to detect changes for dist-release

[Herton R. Krzesinski (via Email Bridge)]

From: Herton R. Krzesinski <herton(a)redhat.com&gt;

redhat: use new genlog.sh script to detect changes for dist-release

The current dist-release process has a flaw, where both its subtargets
(dist-release-changed and dist-release-finish) depends on setup-source
target to run (so genspec.sh is run twice). To avoid having to do the
work twice and do and revert changes before dist-release-finish is
called, we now detect changes by creating the changelog using genlog.sh
first to detect if there are really changes, and do the marker check
using an if condition instead of relying on git to see if there are
changes.

Signed-off-by: Herton R. Krzesinski <herton(a)redhat.com&gt;

diff --git a/redhat/Makefile b/redhat/Makefile
index blahblah..blahblah 100644
--- a/redhat/Makefile
+++ b/redhat/Makefile
@@ -572,18 +572,18 @@ dist-rpm-baseonly: dist-sources do-rpmbuild
 # unless you know what you're doing, you don't want to use the next four ones
 dist-release-finish: setup-source
 	@cp $(SOURCES)/$(SPECCHANGELOG) $(REDHAT)/$(SPECCHANGELOG)
+	@echo $(MARKER) > $(REDHAT)/marker
 	@$(GIT) add $(REDHAT)/$(SPECCHANGELOG)
 	@$(GIT) add $(REDHAT)/marker
 	@$(GIT) commit -s ../Makefile.rhelver $(REDHAT)/marker $(REDHAT)/$(SPECCHANGELOG)
$(SPECFILE).template -m "[redhat] $(RELEASETAG)"
-dist-release-changed: setup-source
-	@cp $(SOURCES)/$(SPECCHANGELOG) $(REDHAT)/$(SPECCHANGELOG)
-	@echo $(MARKER) > $(REDHAT)/marker
-	@# if neither changelog nor marker was updated, skip bumping a release
-	@$(GIT) update-index -q --really-refresh
-	@if $(GIT) diff-index --quiet HEAD; then \
+dist-release-changed:
+	@CLOGF="$$(mktemp)"; \
+	trap 'rm -f "$$CLOGF"' SIGHUP SIGINT SIGTERM EXIT; \
+	$(REDHAT)/genlog.sh "$$CLOGF"; \
+	if [ "$(MARKER)" == "$$(cat $(REDHAT)/marker)" ] && \
+	   [ "$$(wc -l $$CLOGF | cut -d ' ' -f 1)" -le 3 ]; then \
 		echo "Nothing changed, skipping updates"; \
 	else \
-		$(GIT) checkout -- $(REDHAT)/$(SPECCHANGELOG); \
 		$(REDHAT)/scripts/new_release.sh; \
 		$(MAKE) dist-release-finish; \
 	fi

--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1980