Add gcov coverage tooling; use ./autogen.sh --enable-gcov and then make coverage-html to see a report of what's covered. You can read about the rationale in this old blog post: http://qualityhour.wordpress.com/2012/01/29/test-coverage-tutorial-for-cc-autotools-projects/ .

Approved by William Hua, PS Jenkins bot.

1 files changed, 48 insertions, 0 deletions

diff --git a/Makefile.am.coverage b/Makefile.am.coverage
new file mode 100644
index 00000000..fb977474
--- /dev/null
+++ b/Makefile.am.coverage
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+
+# Coverage targets
+
+.PHONY: clean-gcno clean-gcda \
+	coverage-html generate-coverage-html clean-coverage-html \
+	coverage-gcovr generate-coverage-gcovr clean-coverage-gcovr
+
+clean-local: clean-gcno clean-coverage-html clean-coverage-gcovr
+
+if HAVE_GCOV
+
+clean-gcno:
+	@echo Removing old coverage instrumentation
+	-find -name '*.gcno' -print | xargs -r rm
+
+clean-gcda:
+	@echo Removing old coverage results
+	-find -name '*.gcda' -print | xargs -r rm
+  
+coverage-html: clean-gcda
+	-$(MAKE) $(AM_MAKEFLAGS) -k check
+	$(MAKE) $(AM_MAKEFLAGS) generate-coverage-html
+  
+generate-coverage-html:
+	@echo Collecting coverage data
+	$(LCOV) --directory $(top_builddir) --capture --output-file coverage.info --no-checksum --compat-libtool
+	LANG=C $(GENHTML) --prefix $(top_builddir) --output-directory coveragereport --title "Code Coverage" --legend --show-details coverage.info
+  
+clean-coverage-html: clean-gcda
+	-$(LCOV) --directory $(top_builddir) -z
+	-rm -rf coverage.info coveragereport
+
+if HAVE_GCOVR
+
+coverage-gcovr: clean-gcda
+	-$(MAKE) $(AM_MAKEFLAGS) -k check
+	$(MAKE) $(AM_MAKEFLAGS) generate-coverage-gcovr
+	
+generate-coverage-gcovr:
+	@echo Generating coverage GCOVR report
+	$(GCOVR) -x -r $(top_builddir) -o $(top_builddir)/coverage.xml
+	
+clean-coverage-gcovr: clean-gcda
+	-rm -rf $(top_builddir)/coverage.xml
+
+endif # HAVE_GCOVR
+
+endif # HAVE_GCOV