>>> Unpacking source...
>>> Unpacking mailsync_5.2.1.orig.tar.gz to /var/tmp/portage/net-mail/mailsync-5.2.1/work
>>> Source unpacked in /var/tmp/portage/net-mail/mailsync-5.2.1/work
>>> Compiling source in /var/tmp/portage/net-mail/mailsync-5.2.1/work/mailsync-5.2.1 ...
./configure --prefix=/usr --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib
configure: loading site script /usr/share/config.site
configure: loading site script /usr/share/crossdev/include/site/linux
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for i686-pc-linux-gnu-gcc... i686-pc-linux-gnu-gcc
checking for C compiler default output file name... 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 i686-pc-linux-gnu-gcc accepts -g... yes
checking for i686-pc-linux-gnu-gcc option to accept ANSI C... none needed
checking for style of include used by make... GNU
checking dependency style of i686-pc-linux-gnu-gcc... gcc3
checking for i686-pc-linux-gnu-g++... i686-pc-linux-gnu-g++
checking whether we are using the GNU C++ compiler... yes
checking whether i686-pc-linux-gnu-g++ accepts -g... yes
checking dependency style of i686-pc-linux-gnu-g++... gcc3
checking for a BSD-compatible install... /usr/bin/install -c
checking for gawk... (cached) gawk
checking how to run the C preprocessor... i686-pc-linux-gnu-gcc -E
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for string.h... (cached) yes
checking for an ANSI C-conforming const... yes
checking whether lstat dereferences a symlink specified with a trailing slash... yes
checking whether stat accepts an empty string... no
checking for getpass... yes
checking for memset... yes
checking for strchr... yes
checking for strdup... yes
checking for strerror... yes
checking for strtoul... yes
checking for crypt in -lcrypt... yes
checking for connect... yes
checking for gethostbyname... yes
checking for libssl... found in /usr/lib
checking for main in -lssl... yes
checking for main in -lcrypto... yes
checking for openssl/ssl.h... found in /usr/include
checking for krb5-config... found /usr/bin/krb5-config
checking for pam library... found in /usr/lib
checking for pam headers... found in /usr/include
checking if pam test program compiles... yes
checking for c-client.h... not found
configure: error: a working c-client installation is required for building mailsync

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/net-mail/mailsync-5.2.1/work/mailsync-5.2.1/config.log
 * ERROR: net-mail/mailsync-5.2.1 failed:
 *   econf failed
 * 
 * Call stack:
 *     ebuild.sh, line  55:  Called src_compile
 *   environment, line 336:  Called _eapi0_src_compile
 *     ebuild.sh, line 599:  Called econf
 *     ebuild.sh, line 533:  Called die
 * The specific snippet of code:
 *   			die "econf failed"
 * 
 * If you need support, post the output of 'emerge --info =net-mail/mailsync-5.2.1',
 * the complete build log and the output of 'emerge -pqv =net-mail/mailsync-5.2.1'.
 * The complete build log is located at '/var/log/portage/build/net-mail/mailsync-5.2.1:20091121-230027.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-mail/mailsync-5.2.1/temp/environment'.
 * S: '/var/tmp/portage/net-mail/mailsync-5.2.1/work/mailsync-5.2.1'