* Package:    mail-mta/esmtp-1.2-r1
 * Repository: gentoo
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> cfg-update-1.8.2-r1: Creating checksum index...
>>> Unpacking source...
>>> Unpacking esmtp-1.2.tar.bz2 to /var/tmp/portage/mail-mta/esmtp-1.2-r1/work
>>> Source unpacked in /var/tmp/portage/mail-mta/esmtp-1.2-r1/work
>>> Preparing source in /var/tmp/portage/mail-mta/esmtp-1.2-r1/work/esmtp-1.2 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/mail-mta/esmtp-1.2-r1/work/esmtp-1.2 ...
./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 --disable-dependency-tracking --libdir=/usr/lib64
checking for a BSD-compatible install... /usr/lib/portage/python3.8/ebuild-helpers/xattr/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for x86_64-pc-linux-gnu-gcc... x86_64-pc-linux-gnu-gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
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 ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of x86_64-pc-linux-gnu-gcc... none
checking how to run the C preprocessor... x86_64-pc-linux-gnu-gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for an ANSI C-conforming const... yes
checking for flex... flex
checking lex output file root... lex.yy
checking lex library... -lfl
checking whether yytext is a pointer... yes
checking whether ln -s works... yes
checking for bison... bison -y
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 libesmtp.h usability... yes
checking libesmtp.h presence... yes
checking for libesmtp.h... yes
checking for libESMTP... no
configure: error: libESMTP library not found

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/mail-mta/esmtp-1.2-r1/work/esmtp-1.2/config.log
 * ERROR: mail-mta/esmtp-1.2-r1::gentoo failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line 125:  Called src_configure
 *             environment, line 223:  Called default
 *      phase-functions.sh, line 855:  Called default_src_configure
 *      phase-functions.sh, line 890:  Called __eapi2_src_configure
 *        phase-helpers.sh, line 797:  Called econf
 *        phase-helpers.sh, line 680:  Called __helpers_die 'econf failed'
 *   isolated-functions.sh, line 112:  Called die
 * The specific snippet of code:
 *   		die "$@"
 * 
 * If you need support, post the output of `emerge --info '=mail-mta/esmtp-1.2-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=mail-mta/esmtp-1.2-r1::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/mail-mta/esmtp-1.2-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/mail-mta/esmtp-1.2-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/mail-mta/esmtp-1.2-r1/work/esmtp-1.2'
 * S: '/var/tmp/portage/mail-mta/esmtp-1.2-r1/work/esmtp-1.2'