Superuser CM-11 build error

target thumb C: su.recovery <= bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/su.c
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/su.c: In function 'fork_zero_fucks':
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/su.c:79:9: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
target thumb C: su.recovery <= bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/daemon.c
target thumb C: su.recovery <= bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/activity.c
target thumb C: su.recovery <= bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/utils.c
target thumb C: su.recovery <= bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c
target thumb C: su.recovery <= bootable/recovery/su/dbstub.c
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c: In function 'write_blocking':
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c:46:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c: At top level:
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c:206:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration]
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c: In function 'watch_sigwinch_async':
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/pts.c:293:1: error: control reaches end of non-void function [-Werror=return-type]
cc1: some warnings being treated as errors
make: *** [/home/marcg/BUILD/CM-11/out/target/product/hammerhead/obj/RECOVERY_EXECUTABLES/su.recovery_intermediates/../../../external/koush/Superuser/Superuser/jni/su/pts.o] Error 1
make: *** Waiting for unfinished jobs....
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/daemon.c: In function 'connect_daemon':
bootable/recovery/su/../../../external/koush/Superuser/Superuser/jni/su/daemon.c:640:29: warning: 'ptmx' may be used uninitialized in this function [-Wmaybe-uninitialized]