Generate ChangeLog from git at packaging time.

[cdecl99.git] / Makefile.am

diff --git a/Makefile.am b/Makefile.am
index 01ff0a62e5c3f9bec551629150dd191f17f46751..4bdc88cad94c1d7280de28bc34066edea4aad790 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -149,6 +149,39 @@ unfuck-distdir:
        find '$(distdir)' -type f -exec chmod u+w {} +
 .PHONY: unfuck-distdir
 
+GITLOG_FLAGS = --format='%s%n%n%b%n'
+
+dist-hook: generate-changelog
+generate-changelog: unfuck-distdir
+       -: "$${GIT_DIR=$(top_srcdir)/.git}"; \
+         export GIT_DIR; test -d "$$GIT_DIR" || exit 0; \
+         $(top_srcdir)/gitlog-to-changelog $(GITLOG_FLAGS) \
+           >'$(distdir)/ChangeLog.gen' && \
+         mv -f '$(distdir)/ChangeLog.gen' '$(distdir)/ChangeLog'
+       rm -f '$(distdir)/ChangeLog.gen'
+.PHONY: generate-changelog
+
+GENERIC_V   = $(GENERIC_V_@AM_V@)
+GENERIC_V_  = $(GENERIC_V_@AM_DEFAULT_V@)
+GENERIC_V_0 = @printf '%2.0s%$(DX_ALIGN_V)s %s\n'
+
+TEST_DISTRIBUTION = false
+TEST_DISTRIBUTION_OR_ERROR = if $(TEST_DISTRIBUTION); \
+  then echo 'Proceeding anyway...'; \
+  else echo 'Run $(MAKE) TEST_DISTRIBUTION=true to ignore this failure.'; \
+       false; \
+  fi
+
+distcheck-hook:
+       $(GENERIC_V) : 'CHECK   ' ChangeLog; \
+         $(AWK) '/^Stub/ { print FILENAME ":" NR ":", $$0; exit 1 }' \
+           $(distdir)/ChangeLog || { \
+             echo 'ERROR: *** Packaged ChangeLog was not properly generated from git log.'; \
+             echo '       *** The source version was used instead, but this appears to'; \
+             echo '       *** be the stub from a git checkout.  The "git" and "perl"'; \
+             echo '       *** programs are required for ChangeLog generation to work.'; \
+             $(TEST_DISTRIBUTION_OR_ERROR); } >&2
+
 # Supporting rules for bison/flex.
 
 BISON_V   = $(BISON_V_@AM_V@)