Sorry, I did not save appropriate error logs cause bug appears trivial to fix. In /usr/include/qt5/QtCore/qconfig.h there is #include <Gentoo/gentoo-qconfig.h> Compiler reports error cause it can not find this file. Changing that line to #include <qt5/Gentoo/gentoo-qconfig.h> fixed a build.
Please attach build.log, paste emerge --info.
Created attachment 577566 [details] requested buidl.log and emerge --info Portage 2.3.62 (python 3.5.5-final-0, default/linux/amd64/17.0/developer, gcc-8.3.0, glibc-2.29-r2, 4.14.65-gentoo x86_64) ================================================================= System uname: Linux-4.14.65-gentoo-x86_64-AMD_Ryzen_7_1700X_Eight-Core_Processor-with-gentoo-2.6 KiB Mem: 32910368 total, 4539664 free KiB Swap: 33554428 total, 33554428 free Timestamp of repository gentoo: Wed, 22 May 2019 12:00:01 +0000 Head commit of repository gentoo: 2498835efeb108ef674a2eef164bda212c7ac47f Head commit of repository flatpak-overlay: 0021aa0acbac8d35623e417832a981bd159bd69b sh bash 4.4_p23-r1 ld GNU ld (Gentoo 2.31.1 p7) 2.31.1 ccache version 3.6 [disabled] app-shells/bash: 4.4_p23-r1::gentoo dev-java/java-config: 2.2.0-r4::gentoo dev-lang/perl: 5.26.2::gentoo dev-lang/python: 2.7.15::gentoo, 3.5.5::gentoo, 3.6.5::gentoo dev-util/ccache: 3.6::gentoo dev-util/cmake: 3.14.3::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/openrc: 0.41.2::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.15.1-r2::gentoo, 1.16.1-r1::gentoo sys-devel/binutils: 2.31.1-r6::gentoo sys-devel/gcc: 6.4.0-r1::gentoo, 7.3.0-r3::gentoo, 8.3.0-r1::gentoo sys-devel/gcc-config: 2.0::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 4.14-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.29-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-extra-opts: sync-rsync-verify-max-age: 24 sync-rsync-verify-metamanifest: yes sync-rsync-verify-jobs: 1 flatpak-overlay location: /usr/portage/flatpak-overlay sync-type: git sync-uri: https://github.com/fosero/flatpak-overlay.git masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=znver1" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -march=znver1" DISTDIR="/usr/portage/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs collision-protect config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned sandbox sfperms sign splitdebug strict test-fail-continue unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0" MAKEOPTS="-j8" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac accessibility acl acpi alsa amd64 apng berkdb bluetooth branding bzip2 cairo caps cdda cdr cli consolekit corefonts cups cxx dbus declarative dlz dri dts dvd dvdr emboss encode exif extras fam flac fontconfig gdbm gif gimp glamor gpm gtk gudev hal hwdb iconv icu ipv6 jbig jpeg kde kdrive lcms ldap libnotify libtirpc lzma mad mmx mng mp3 mp4 mpeg multilib ncurses nls nptl nptlonly ogg opengl openmp pam pango pcre pdf perl png policykit ppds python qt3 qt3support qt4 qt5 readline sasl sdl seccomp semantic-desktop smp snmp spell sql sqlite sse sse2 ssl startup-notification svg tcpd threads threadsafe tiff truetype udev udisks unicode upower usb vorbis wxwidgets x264 xattr xcb xetex xine xml xv xvid zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-1" POSTGRES_TARGETS="postgres9_5 postgres10" PYTHON_SINGLE_TARGET="python3_5" PYTHON_TARGETS="python2_7 python3_5 python3_6" RUBY_TARGETS="ruby24" USERLAND="GNU" VIDEO_CARDS="radeon" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS