1 files changed, 51 insertions, 0 deletions
diff --git a/m4/osmo_ac_code_coverage.m4 b/m4/osmo_ac_code_coverage.m4
new file mode 100644
index 00000000..7921db59
--- /dev/null
+++ b/m4/osmo_ac_code_coverage.m4
@@ -0,0 +1,51 @@
+AC_DEFUN([OSMO_AC_CODE_COVERAGE],[
+	dnl Check for --enable-code-coverage
+	AC_REQUIRE([OSMO_AX_CODE_COVERAGE])
+	AC_REQUIRE([AX_CHECK_COMPILE_FLAG])
+
+	AS_IF([ test "x$enable_code_coverage" = "xyes" ], [
+		# Check whether --coverage flags is supported and add it to CFLAGS
+		# When it is not supported add CODE_COVERAGE_CFLAGS to CFLAGS instead
+		AX_CHECK_COMPILE_FLAG([--coverage],
+			[CFLAGS="$CFLAGS -O0 -g --coverage"],
+			[CFLAGS="$CFLAGS $CODE_COVERAGE_CFLAGS"])
+
+		# Add both the absolute source and build directories to the coverage directories.
+		CODE_COVERAGE_DIRECTORY='$(abspath $(abs_top_srcdir)) $(abspath $(abs_top_builddir))'
+		AC_SUBST(CODE_COVERAGE_DIRECTORY)
+
+		# Enable branch coverage by default
+		CODE_COVERAGE_BRANCH_COVERAGE='1'
+		AC_SUBST(CODE_COVERAGE_BRANCH_COVERAGE)
+
+		# Exclude external files by default
+		CODE_COVERAGE_LCOV_OPTIONS='$(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) --no-external'
+		AC_SUBST(CODE_COVERAGE_LCOV_OPTIONS)
+
+		# Exclude tests sources from the coverage report
+		CODE_COVERAGE_IGNORE_PATTERN='"$(abspath $(abs_top_srcdir))/tests/*"'
+		AC_SUBST(CODE_COVERAGE_IGNORE_PATTERN)
+
+		# lcov_cobertura is needed only when you want to export the coverage report in
+		# the Cobertura's XML format supported by Jenkin's Cobertura plugin
+		AC_CHECK_PROG([LCOV_COBERTURA], [lcov_cobertura], [lcov_cobertura])
+		AS_IF([test "x$LCOV_COBERTURA" != "xno"], [m4_pattern_allow([AM_V_GEN]) CODE_COVERAGE_RULES+='
+coverage-cobertura.xml: $(CODE_COVERAGE_OUTPUT_FILE)
+	$(AM_V_GEN)$(LCOV_COBERTURA) -b $(top_srcdir) -o $$@@ $(CODE_COVERAGE_OUTPUT_FILE)
+
+.PHONY: code-coverage-cobertura
+code-coverage-cobertura: code-coverage-capture coverage-cobertura.xml
+'
+		], [CODE_COVERAGE_RULES+='
+.PHONY: code-coverage-cobertura
+code-coverage-cobertura:
+	@echo "Need to install lcov_cobertura"
+'
+		])
+	], [CODE_COVERAGE_RULES+='
+.PHONY: code-coverage-cobertura
+code-coverage-cobertura:
+	@echo "Need to and reconfigure with --enable-code-coverage"
+'
+	])
+])