>>> Unpacking source...
>>> Unpacking amavisd-new-2.6.1.tar.gz to /var/tmp/portage/mail-filter/amavisd-new-2.6.1-r1/work
 * Applying amavisd-new-courier.patch ...
  [ ok ]
 * Applying amavisd-new-2.4.4-amavisd.conf-gentoo.patch ...
  [ ok ]
 * Applying amavisd-new-dkimconf.patch ...
  [ ok ]
>>> Source unpacked in /var/tmp/portage/mail-filter/amavisd-new-2.6.1-r1/work
>>> Compiling source in /var/tmp/portage/mail-filter/amavisd-new-2.6.1-r1/work/amavisd-new-2.6.1 ...
./configure --prefix=/usr --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --libdir=/usr/lib64 --with-runtime-dir=/var/amavis --with-sockname=/var/amavis/amavisd.sock --with-user=amavis
checking for x86_64-pc-linux-gnu-gcc... x86_64-pc-linux-gnu-gcc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether x86_64-pc-linux-gnu-gcc accepts -g... yes
checking for x86_64-pc-linux-gnu-gcc option to accept ANSI C... none needed
checking for ar... ar
checking for awk... awk
checking for id... /usr/bin/id
checking for a BSD-compatible install... /usr/bin/install -c
checking for nm... /usr/bin/nm
checking for runtime directory... /var/amavis
checking socket name... /var/amavis/amavisd.sock
checking for header_tag... X-Virus-Scanned
checking for header_value... by amavisd-new
checking whether x86_64-pc-linux-gnu-gcc accepts -pthread... yes
checking for res_init in -lresolv... no
checking for htons in -lsocket... no
checking for gethostbyname in -lnsl... yes
checking for pthread_once in -lpthread... yes
checking for snprintf... yes
checking for mkdtemp... yes
checking for mktemp... yes
checking for libmilter/mfapi.h... /usr/include/libmilter/mfapi.h
checking for libmilter.a... no
checking for libsm.a... no
checking for libsmutil.a... no
checking for sendmail... /usr/sbin/sendmail
checking for rm... /bin/rm
configure: WARNING: Oops.. I couldn't find libmilter.a.  Please install Sendmail 8.12
configure: WARNING: and its libraries.  You must run Build in the libmilter/ directory
configure: WARNING: to compiler libmilter.

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/mail-filter/amavisd-new-2.6.1-r1/work/amavisd-new-2.6.1/helper-progs/config.log
 * 
 * ERROR: mail-filter/amavisd-new-2.6.1-r1 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2338:  Called econf '--with-runtime-dir=/var/amavis' '--with-sockname=/var/amavis/amavisd.sock' '--with-user=amavis'
 *               ebuild.sh, line  534:  Called die
 * The specific snippet of code:
 *   			die "econf failed"
 *  The die message:
 *   econf failed
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/mail-filter/amavisd-new-2.6.1-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/mail-filter/amavisd-new-2.6.1-r1/temp/environment'.
 *