diff --git a/cmake/cmake.define b/cmake/cmake.define
index e5ef08acb8..f90024e032 100644
--- a/cmake/cmake.define
+++ b/cmake/cmake.define
@@ -75,6 +75,14 @@ IF (TD_WINDOWS)
     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_FLAGS}")
 
 ELSE ()
+    IF (${COVER} MATCHES "true")
+        MESSAGE(STATUS "Test coverage mode, add extra flags")
+        SET(GCC_COVERAGE_COMPILE_FLAGS "-fprofile-arcs -ftest-coverage")
+        SET(GCC_COVERAGE_LINK_FLAGS    "-lgcov --coverage")
+        SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}")
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}")
+    ENDIF ()
+
     IF (${SANITIZER} MATCHES "true")
         SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}     -Werror -Werror=return-type -fPIC -gdwarf-2 -fsanitize=address -fsanitize=undefined -fno-sanitize-recover=all -fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow -fno-sanitize=null -fno-sanitize=alignment -static-libasan -g3")
         SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Werror=return-type -fPIC -gdwarf-2 -fsanitize=address -fsanitize=undefined -fno-sanitize-recover=all -fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow -fno-sanitize=null -fno-sanitize=alignment -static-libasan -g3")