Perl coverage convenience targets.

* Makefile.am (PERL_COVERAGE_DB, PERL_COVERAGE_FLAGS)
(PERL_COVER): New variables.
(check-coverage, check-coverage-run, check-coverage-report)
(clean-coverage): New phony targets.
(clean-local): Depend on clean-coverage.

Signed-off-by: Ralf Wildenhues <[email protected]>

ChangeLog

@@ -1,3 +1,12 @@
+2009-10-31  Ralf Wildenhues  <[email protected]>
+
+	Perl coverage convenience targets.
+	* Makefile.am (PERL_COVERAGE_DB, PERL_COVERAGE_FLAGS)
+	(PERL_COVER): New variables.
+	(check-coverage, check-coverage-run, check-coverage-report)
+	(clean-coverage): New phony targets.
+	(clean-local): Depend on clean-coverage.
+
 2009-10-28  Eric Blake  <[email protected]>
 
 	Fix corner cases in AS_LITERAL_IF and AS_TR_SH.

Makefile.am

@@ -74,3 +74,32 @@ dist-hook:
 # TODO remove this once automake vs. AC_CONFIG_LINKS issue is fixed.
 distclean-local:
 	if test x"$(VPATH)" != x ; then rm -f GNUmakefile ; fi
+
+# Perl coverage statistics.
+PERL_COVERAGE_DB = `pwd`/cover_db
+PERL_COVERAGE_FLAGS = -MDevel::Cover=-db,$(PERL_COVERAGE_DB),-silent,on,-summary,off
+PERL_COVER = cover
+
+check-coverage-run: all
+	$(mkinstalldirs) $(PERL_COVERAGE_DB)
+	PERL5OPT="$(PERL_COVERAGE_FLAGS)"; export PERL5OPT; \
+	$(MAKE) $(AM_MAKEFLAGS) check
+
+check-coverage-report:
+	@if test ! -d $(PERL_COVERAGE_DB); then \
+	  echo "No coverage database found in \`$(PERL_COVERAGE_DB)'." >&2; \
+	  echo "Please run \`make check-coverage' first" >&2; \
+	  exit 1; \
+	fi
+	$(PERL_COVER) $(PERL_COVERAGE_DB) $(PERL_COVER_FLAGS)
+
+# We don't use direct dependencies here because we'd like to be able
+# to invoke the report even after interrupted check-coverage.
+check-coverage: check-coverage-run
+	$(MAKE) $(AM_MAKEFLAGS) check-coverage-report
+
+clean-local: clean-coverage
+clean-coverage:
+	rm -rf $(PERL_COVERAGE_DB)
+
+.PHONY: check-coverage check-coverage-run check-coverage-report clean-coverage