Protect spaces in path.

diff --git a/tools/cmake/Flags.cmake b/tools/cmake/Flags.cmake
index 4cf2437..3e92f60 100644 (file)
--- a/tools/cmake/Flags.cmake
+++ b/tools/cmake/Flags.cmake
@@ -100,9 +100,9 @@ if(CMAKE_COMPILER_IS_GNUCC)
     set(RELATIVE_SOURCE_DIR ".")
   endif()
   if (CMAKE_C_COMPILER_VERSION VERSION_LESS "8.0")
-    set(optCFLAGS "${optCFLAGS} -fdebug-prefix-map=${CMAKE_SOURCE_DIR}=${RELATIVE_SOURCE_DIR}")
+    set(optCFLAGS "${optCFLAGS} -fdebug-prefix-map=\"${CMAKE_SOURCE_DIR}=${RELATIVE_SOURCE_DIR}\"")
   else()
-    set(optCFLAGS "${optCFLAGS} -ffile-prefix-map=${CMAKE_SOURCE_DIR}=${RELATIVE_SOURCE_DIR}")
+    set(optCFLAGS "${optCFLAGS} -ffile-prefix-map=\"${CMAKE_SOURCE_DIR}=${RELATIVE_SOURCE_DIR}\"")
   endif()
 endif()