Checking patch include/bits/sigstksz.h...
error: while searching for:
   glibc build.  IS_IN can only be used when _ISOMAC isn't defined.  */
#ifdef _ISOMAC
# include_next <bits/sigstksz.h>
#elif IS_IN (libsupport)
# include_next <bits/sigstksz.h>
#endif

error: patch failed: include/bits/sigstksz.h:2
error: include/bits/sigstksz.h: patch does not apply