Fix cmake warning.

diff --git a/tools/cmake/Flags.cmake b/tools/cmake/Flags.cmake
index ee800da..5e2d24a 100644 (file)
--- a/tools/cmake/Flags.cmake
+++ b/tools/cmake/Flags.cmake
@@ -220,7 +220,7 @@ set(TESH_OPTION "")
 if(enable_coverage)
   find_program(GCOV_PATH NAMES ENV{GCOV} gcov)
   if(GCOV_PATH)
-    set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE TYPE FILEPATH FORCE)
+    set(COVERAGE_COMMAND "${GCOV_PATH}" CACHE FILEPATH "Coverage testing tool (gcov)" FORCE)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOVERAGE")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs -ftest-coverage")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")