CI: added code coverage workflow

tests/CMakeLists.txt

@@ -5,6 +5,7 @@ include(cmake/standard.cmake)
 
 option(STATIC_LIBS "Use locally built libuv and libzmq static libs" OFF)
 option(WITH_LTO "Use link-time compiler optimization (if linking fails for you, run cmake with -DWITH_LTO=OFF)" ON)
+option(WITH_COVERAGE "Generate code coverage data" OFF)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
 

tests/cmake/flags.cmake

@@ -3,7 +3,10 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 	set(WARNING_FLAGS "-Wall -Wextra")
 
 	if (CMAKE_BUILD_TYPE STREQUAL "Debug")
-		set(OPTIMIZATION_FLAGS "-O0 -g3 -ftrapv")
+		set(OPTIMIZATION_FLAGS "-O0 -g3")
+		if (WITH_COVERAGE)
+			set(OPTIMIZATION_FLAGS "${OPTIMIZATION_FLAGS} --coverage")
+		endif()
 	else()
 		set(OPTIMIZATION_FLAGS "-O3 -ffast-math -s")
 		if (WITH_LTO)