Turn off fortify, since it doesn't work for -O0. Refs #5926.

git-svn-id: file:///svn/toku/tokudb@54709 c7de825b-a66e-492c-adef-691d508d4ae1

cmake_modules/TokuSetupCompiler.cmake

@@ -25,7 +25,9 @@ endif ()
 ## add TOKU_PTHREAD_DEBUG for debug builds
 set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG TOKU_PTHREAD_DEBUG=1)
 set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELWITHDEBINFO TOKU_PTHREAD_DEBUG=1)
-set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELWITHDEBINFO _FORTIFY_SOURCE=2)
+## fortify doesn't work with -O0, so we are deprecating it for now.  Sometime we should turn on 
+## fortify for -O1 builds, but we don't want it on the release builds.
+## #set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_RELWITHDEBINFO _FORTIFY_SOURCE=2)
 
 ## coverage
 option(USE_GCOV "Use gcov for test coverage." OFF)