* Package:    games-rpg/twclone-0.14-r1
 * Repository: gentoo
 * Maintainer: games@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_musl kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking twclone-source-0.14.tar.gz to /var/tmp/portage/games-rpg/twclone-0.14-r1/work
>>> Source unpacked in /var/tmp/portage/games-rpg/twclone-0.14-r1/work
>>> Preparing source in /var/tmp/portage/games-rpg/twclone-0.14-r1/work/twclone-source-0.14 ...
 * Applying twclone-0.14-format.patch ...
 [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/games-rpg/twclone-0.14-r1/work/twclone-source-0.14 ...
 * econf: updating twclone-source-0.14/config.sub with /usr/share/gnuconfig/config.sub
 * econf: updating twclone-source-0.14/config.guess with /usr/share/gnuconfig/config.guess
./configure --prefix=/usr --build=x86_64-gentoo-linux-musl --host=x86_64-gentoo-linux-musl --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --disable-dependency-tracking --libdir=/usr/lib
loading site script /usr/share/config.site
creating cache ./config.cache
checking for a BSD compatible install... /usr/lib/portage/python3.6/ebuild-helpers/xattr/install -c
checking whether build environment is sane... yes
checking for mawk... mawk
checking whether make sets ${MAKE}... yes
checking host system type... x86_64-gentoo-linux-musl
checking for a BSD compatible install... /usr/lib/portage/python3.6/ebuild-helpers/xattr/install -c
checking for gcc... gcc
checking whether the C compiler (gcc -O2 -pipe -march=native -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0) works... yes
checking whether the C compiler (gcc -O2 -pipe -march=native -Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0) is a cross-compiler... no
checking whether we are using GNU C... yes
checking whether gcc accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of gcc... none
checking for pow in -lm... yes
checking for pthread_create in -lpthread... yes
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for ctype.h... yes
checking for errno.h... yes
checking for math.h... yes
checking for netdb.h... yes
checking for netinet/in.h... yes
checking for pthread.h... yes
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for sys/ipc.h... yes
checking for sys/msg.h... yes
checking for sys/poll.h... no
configure: error: Missing essential header!

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/games-rpg/twclone-0.14-r1/work/twclone-source-0.14/config.log
 * ERROR: games-rpg/twclone-0.14-r1::gentoo failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line 125:  Called src_configure
 *             environment, line 418:  Called default
 *      phase-functions.sh, line 855:  Called default_src_configure
 *      phase-functions.sh, line 890:  Called __eapi2_src_configure
 *        phase-helpers.sh, line 798:  Called econf
 *        phase-helpers.sh, line 681:  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 '=games-rpg/twclone-0.14-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=games-rpg/twclone-0.14-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/games-rpg:twclone-0.14-r1:20200416-195147.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/games-rpg/twclone-0.14-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/games-rpg/twclone-0.14-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/games-rpg/twclone-0.14-r1/work/twclone-source-0.14'
 * S: '/var/tmp/portage/games-rpg/twclone-0.14-r1/work/twclone-source-0.14'