>>> Failed to emerge app-pda/libusbmuxd-2.1.0, Log file:
>>>  '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/temp/build.log'
>>> Jobs: 4 of 18 complete, 1 failed                Load avg: 3.01, 3.17, 2.14
 * Package:    app-pda/libusbmuxd-2.1.0
 * Repository: core-hw-kit
 * USE:        amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking libusbmuxd-2.1.0-032000e.tar.gz to /var/tmp/portage/app-pda/libusbmuxd-2.1.0/work
>>> Source unpacked in /var/tmp/portage/app-pda/libusbmuxd-2.1.0/work
>>> Preparing source in /var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0 ...
 * Running eautoreconf in '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0' ...
 * Running 'libtoolize --install --copy --force --automake' ...
 [ ok ]
 * Running 'aclocal -I m4 --system-acdir=/var/tmp/portage/app-pda/libusbmuxd-2.1.0/temp/aclocal' ...
 [ ok ]
 * Running 'autoconf --force' ...
 [ ok ]
 * Running 'autoheader' ...
 [ ok ]
 * Running 'automake --add-missing --copy --foreign --force-missing' ...
 [ ok ]
 * Running elibtoolize in: libusbmuxd-2.1.0/
 *   Applying portage/1.2.0 patch ...
 *   Applying sed/1.5.6 patch ...
 *   Applying as-needed/2.4.3 patch ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0 ...
 * econf: updating libusbmuxd-2.1.0/config.sub with /usr/share/gnuconfig/config.sub
 * econf: updating libusbmuxd-2.1.0/config.guess with /usr/share/gnuconfig/config.guess
./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 --disable-silent-rules --docdir=/usr/share/doc/libusbmuxd-2.1.0 --htmldir=/usr/share/doc/libusbmuxd-2.1.0/html --with-sysroot=/ --libdir=/usr/lib64 --disable-static
checking for a BSD-compatible install... /usr/lib/portage/python3.9/ebuild-helpers/xattr/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
configure: error: PACKAGE_VERSION is not defined. Make sure to configure a source tree checked out from git or that .tarball-version is present.

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0/config.log
 * ERROR: app-pda/libusbmuxd-2.1.0::core-hw-kit failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line   93:  Called src_configure
 *             environment, line 1508:  Called econf '--disable-static'
 *        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 '=app-pda/libusbmuxd-2.1.0::core-hw-kit'`,
 * the complete build log and the output of `emerge -pqv '=app-pda/libusbmuxd-2.1.0::core-hw-kit'`.
 * The complete build log is located at '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/temp/environment'.
 * Working directory: '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0'
 * S: '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0'

 * Messages for package app-pda/libusbmuxd-2.1.0:

 * ERROR: app-pda/libusbmuxd-2.1.0::core-hw-kit failed (configure phase):
 *   econf failed
 * 
 * Call stack:
 *               ebuild.sh, line   93:  Called src_configure
 *             environment, line 1508:  Called econf '--disable-static'
 *        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 '=app-pda/libusbmuxd-2.1.0::core-hw-kit'`,
 * the complete build log and the output of `emerge -pqv '=app-pda/libusbmuxd-2.1.0::core-hw-kit'`.
 * The complete build log is located at '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/temp/environment'.
 * Working directory: '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0'
 * S: '/var/tmp/portage/app-pda/libusbmuxd-2.1.0/work/libusbmuxd-2.1.0'

 * GNU info directory index is up-to-date.
 * After world updates, it is important to remove obsolete packages with
 * emerge --depclean. Refer to `man emerge` for more information.