Declaration of ‘setxattr’ must be imported from module ‘Darwin.POSIX.sys.xattr’ before it is required

问题

code is working fine on armv7 but compile for arm64 throws this "Declaration of ‘setxattr’ must be imported from module ‘Darwin.POSIX.sys.xattr’ before it is required" error.

u_int8_t b = 1;
    setxattr([path fileSystemRepresentation],
             "com.apple.MobileBackup", &b, 1, 0, 0);

any help plz?

回答1:

I found the solution. include #include <sys/xattr.h> in the class

来源：https://stackoverflow.com/questions/34851876/declaration-of-setxattr-must-be-imported-from-module-darwin-posix-sys-xattr