* #20736: daemon: added --enable-coverage option and make targets

To get code coverage metrics, run
./configure --enable-coverage
make
make check
make coverage

daemon/Makefile.am

@@ -26,3 +26,16 @@ EXTRA_DIST = m4/libtool.m4 \
 			 m4/ltoptions.m4 \
 			 m4/ltsugar.m4 \
 			 m4/ltversion.m4
+
+coverage:
+	$(AM_V_at)lcov --directory $(top_builddir) --capture --output-file sflphone-coverage.info
+	$(MKDIR_P) html-output
+	genhtml -o html-output sflphone-coverage.info
+
+coverage-clean:
+	$(AM_V_at)lcov --directory $(top_builddir) --zerocounters
+	$(AM_V_at)rm -rf sflphone-coverage.info
+	$(AM_V_at)find -name '*.gcda' -exec rm -f {} +
+	$(AM_V_at)find -name '*.gcno' -exec rm -f {} +
+
+.PHONY: coverage coverage-clean

daemon/configure.ac

@@ -94,6 +94,12 @@ dnl Check for the samplerate development package - name: libsamplerate0-dev
 LIBSAMPLERATE_MIN_VERSION=0.1.2
 PKG_CHECK_MODULES(SAMPLERATE, samplerate >= ${LIBSAMPLERATE_MIN_VERSION},, AC_MSG_ERROR([Missing libsamplerate development package: libsamplerate0-dev]))
 
+dnl Coverage is default-disabled
+AC_ARG_ENABLE([coverage], AS_HELP_STRING([--enable-coverage], [Enable coverage]))
+
+AS_IF([test "x$enable_coverage" = "xyes"], [
+        CXXFLAGS="${CXXFLAGS} -fprofile-arcs -ftest-coverage"
+        LDFLAGS="${LDFLAGS} -fprofile-arcs -ftest-coverage"])
 
 dnl Video is default-disabled
 AC_ARG_ENABLE([video], AS_HELP_STRING([--enable-video], [Enable video]))