==> Synchronizing chroot copy [/chroot/armv8/root] -> [build]...done
==> Making package: cmospwd 5.0-3 (Mon Mar  4 21:42:11 EST 2019)
==> Retrieving sources...
  -> Found cmospwd-5.0.tar.bz2
==> Validating source files with sha512sums...
    cmospwd-5.0.tar.bz2 ... Passed
Host and machine ids are equal (b6eac563832547c9ad9408127b1b4375): refusing to link journals
==> Making package: cmospwd 5.0-3 (Mon 04 Mar 2019 09:42:18 PM EST)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found cmospwd-5.0.tar.bz2
==> WARNING: Skipping all source file integrity checks.
==> Extracting sources...
  -> Extracting cmospwd-5.0.tar.bz2 with bsdtar
==> Starting build()...
gcc -Wall -W -O2 -o cmospwd cmospwd.c
cmospwd.c:88:10: fatal error: sys/io.h: No such file or directory
 #include <sys/io.h>
          ^~~~~~~~~~
compilation terminated.
make: *** [Makefile:5: cmospwd] Error 1
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Build failed, check /chroot/armv8/build/build