1WARNING_CFLAGS = -Wall -Wconditional-uninitialized -Wnullable-to-nonnull-conversion -Wmissing-method-return-type -Woverlength-strings
 2GCC_WARN_UNDECLARED_SELECTOR = YES
 3CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
 4CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE
 5CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
 6CLANG_WARN_PRAGMA_PACK = YES
 7CLANG_WARN_STRICT_PROTOTYPES = YES
 8CLANG_WARN_COMMA = YES
 9GCC_WARN_STRICT_SELECTOR_MATCH = YES
10CLANG_WARN_OBJC_REPEATED_USE_OF_WEAK = YES
11CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
12GCC_WARN_SHADOW = YES
13CLANG_WARN_UNREACHABLE_CODE = YES