Fix compile failures on Intrepid

meta/conf/bitbake.conf

@@ -378,7 +378,7 @@ PATCHRESOLVE = 'user'
 # Build flags and options.
 ##################################################################
 
-export BUILD_CPPFLAGS = "-isystem${STAGING_INCDIR_NATIVE}"
+export BUILD_CPPFLAGS = "-isystem${STAGING_INCDIR_NATIVE} -U_FORTIFY_SOURCE -Wno-format-security"
 BUILDSDK_CPPFLAGS = "-isystem${STAGING_INCDIR}"
 export CPPFLAGS = "${TARGET_CPPFLAGS}"
 export TARGET_CPPFLAGS = ""