-Fstack-Protector Or -Fstack-Protector-all Flag not recognise in Xcode for mixed code (Swift & Objective C)

I have developed an iOS app which has Swift & Objective-C mixed code, and I have added -fstack-protector & -fstack-protector-all flags in build settings under Other C Flag to protect from Stack Smashing

When I submitted binary to MOBSF tool Its giving me report which saying fstack-protector-all flag is not Found

May know the reason why i'm getting this issue?
-Fstack-Protector Or -Fstack-Protector-all Flag not recognise in Xcode for mixed code (Swift & Objective C)
 
 
Q