* Package:    sys-boot/udk-2018-r1
 * Repository: gentoo
 * Maintainer: sveyret@gmail.com proxy-maint@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux python_single_target_python2_7 userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox splitdebug userpriv usersandbox
>>> Unpacking source...
>>> Unpacking udk-2018.tar.gz to /var/tmp/portage/sys-boot/udk-2018-r1/work
>>> Source unpacked in /var/tmp/portage/sys-boot/udk-2018-r1/work
>>> Preparing source in /var/tmp/portage/sys-boot/udk-2018-r1/work/edk2-vUDK2018 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/sys-boot/udk-2018-r1/work/edk2-vUDK2018 ...
sed: -e expression #1, char 90: unknown option to `s'
 * ERROR: sys-boot/udk-2018-r1::gentoo failed (configure phase):
 *   Failed to update makefile header
 * 
 * Call stack:
 *     ebuild.sh, line 125:  Called src_configure
 *   environment, line 2135:  Called die
 * The specific snippet of code:
 *       sed -e "s:^\(BUILD_CFLAGS\s*=\).*$:\1 ${CFLAGS} -MD -fshort-wchar -fno-strict-aliasing -nostdlib -c -fPIC:" -e "s:^\(BUILD_LFLAGS\s*=\).*$:\1 ${LDFLAGS}:" -e "s:^\(BUILD_CXXFLAGS\s*=\).*$:\1 ${CXXFLAGS} -Wno-unused-result:" -i "BaseTools/Source/C/Makefiles/header.makefile" || die "Failed to update makefile header"
 * 
 * If you need support, post the output of `emerge --info '=sys-boot/udk-2018-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-boot/udk-2018-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/sys-boot:udk-2018-r1:20200225-035347.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/sys-boot/udk-2018-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-boot/udk-2018-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-boot/udk-2018-r1/work/edk2-vUDK2018'
 * S: '/var/tmp/portage/sys-boot/udk-2018-r1/work/edk2-vUDK2018'