cat /var/tmp/portage/sys-fs/cryptsetup-1.6.2/temp/autoconf.out
***** autoconf *****
***** PWD: /var/tmp/portage/sys-fs/cryptsetup-1.6.2/work/cryptsetup-1.6.2
***** autoconf

configure.ac:43: error: possibly undefined macro: AC_MSG_ERROR
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure.ac:132: error: possibly undefined macro: AM_PATH_LIBGCRYPT