Add code coverage info support

CMakeLists.txt

@@ -30,6 +30,7 @@ option(ICU "ICU support for convert codepages" ${_ICU_DEFAULT})
 option(STD_IOSTREAM "Building with std iostream operators support" OFF)
 option(INTROSPECTION "Build with introspection" OFF)
 option(TESTS "Build tests and perform their before install step" OFF)
+option(COVERAGE "Build project with coverage info" OFF)
 set(PIP_UTILS 1)
 set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
 set(CMAKE_CXX_STANDARD 11)
@@ -215,6 +216,18 @@ else()
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -Wall")
 endif()
 
+set(PIP_COVERAGE "no")
+if (COVERAGE)
+	find_program(GCOV_EXECUTABLE gcov)
+	if (GCOV_EXECUTABLE)
+		set(PIP_COVERAGE "yes")
+		set(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} --coverage")
+		set(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} --coverage")
+	else()
+		message(STATUS "GCOV_EXECUTABLE: not found")
+	endif()
+endif()
+
 
 # Check if std::iostream operators support
 set(PIP_STD_IOSTREAM "no")
@@ -595,6 +608,7 @@ message("  std::iostream: ${PIP_STD_IOSTREAM}")
 message("  ICU strings  : ${PIP_ICU}")
 message("  Timer types  : ${PIP_TIMERS}")
 message("  Introspection: ${PIP_INTROSPECTION}")
+message("  Coverage     : ${PIP_COVERAGE}")
 if(INTROSPECTION)
 	message(STATUS "  Warning: Introspection reduces the performance!")
 endif()