arch/x86/events/core.c:1651: undefined reference to `stpcpy'
arch/x86/events/core.c:1674: undefined reference to `stpcpy'
arch/x86/events/intel/uncore.c:100: undefined reference to `stpcpy'
drivers/tty/tty_io.c:1139: undefined reference to `stpcpy'
drivers/usb/class/usblp.c:1083: undefined reference to `stpcpy'