Quote CMAKE_C_FLAGS_RELEASE

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7385f6d2fe11bc2e78a81ba17ab37754edb4643b..3ebe858ce80858dbf12f0eb5b6f95a663060bc71 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -254,7 +254,7 @@ endif()
 # Replace optimization level 3 added by default with level 2
 if(NOT MSVC AND NOT CMAKE_C_FLAGS MATCHES "([\\/\\-]O)3")
     string(REGEX REPLACE "([\\/\\-]O)3" "\\12"
-        CMAKE_C_FLAGS_RELEASE ${CMAKE_C_FLAGS_RELEASE})
+        CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
 endif()
 
 # Set architecture alignment requirements