my /etc/portage/make.conf . Add here that it's on clang profile.

etc_portage_make.conf (text/plain), 2.55 KB, created by Arniii on 2023-08-26 08:12:06 UTC

# just a main config ...

MARCH_NATIVE_GCC="-march=skylake -mabm --param=l1-cache-line-size=64 --param=l1-cache-size=32 --param=l2-cache-size=6144"
MARCH_NATIVE_CLANG="-march=skylake -mpopcnt -mlzcnt"

DEBUG_FLAGS_GCC="-g3 -ggdb"
DEBUG_FLAGS_CLANG="-g -glldb"

COMMON_FLAGS="-O3 -pipe"

CFLAGS="${COMMON_FLAGS} ${MARCH_NATIVE_CLANG} ${DEBUG_FLAGS_CLANG} -flto=thin"
CXXFLAGS="${COMMON_FLAGS} ${MARCH_NATIVE_CLANG} ${DEBUG_FLAGS_CLANG} -flto=thin"
FFLAGS="${COMMON_FLAGS} ${MARCH_NATIVE_GCC} ${DEBUG_FLAGS_GCC} -flto=4" # no flang :( only gfortran
FCFLAGS="${COMMON_FLAGS} ${MARCH_NATIVE_GCC} ${DEBUG_FLAGS_GCC} -flto=4" # no flang :( only gfortran
# -O2 in LDFLAGS refers to binary size optimization during linking, it is NOT related to the -O levels of the compiler              
EMERGE_DEFAULT_OPTS="--jobs=4 --load-average=4"

MAKEOPTS="-j4"

FEATURES="ccache splitdebug -nostrip compressdebug installsources"
CCACHE_DIR="/var/cache/ccache"

LC_MESSAGES=C.utf8

GENTOO_MIRRORS="https://mirror.dkm.cz/gentoo/"

ACCEPT_LICENSE="-* @FREE @BINARY-REDISTRIBUTABLE"

INPUT_DEVICES="libinput"
VIDEO_CARDS="intel nvidia"

L10N="ru uk en-GB en"

USE="10bit 12bit 3d 7z 7zip X aac alsa alsa-plugin archive asan avif bluetooth
     bluetooth-sound bluez bluray bmp boost brightness-control brotli cairo
     ccache cdaudio cdda cddb cdio cdr cdrom cdsound clang cmake
     color-management colord corefonts cppcheck cpudetection cpuid cuda cudnn
     cups cxx d dbus designer djvu docker drm dts dvbpsi dvd dvda dvdarchive
     dvdr egl elogind epub exif firefox flac flatpak fontconfig frei0r geoclue
     gif git gles2 glib gmp gnome-keyring gnutls gpg graphite grub gstreamer
     heif help hwaccel icu image imagemagick initramfs interlaced
     introspection jit jpeg jpeg2k jpegxl json jupyter kde lame lapack lapacke
     ldac ldap libass llvm lrz lsan lsp lspclient lto lua lz4 lzip lzma lzo
     lzo2 markdown matroska mesh mobi mp3 mp4 mpc mpeg mpfr mpi mpris mpv msan
     mtp native-cflags networkmanager nss numpy nvdec nvenc nvidia nvimpager
     nvme ogg okular opencl opencv opengl opus panorama pcre32 pdf pgo
     pipewire plasma png positioning postgres pulseaudio python qml qt5 qt6
     quick rar raw rustfmt screencast screensaver sddm sdl sdl2 smart sndfile
     sound-server sox speex sqlite srt subtitles svg taglib text theora
     threaded threads thunderbolt tmux truetype tsan udev usb v4l v4l2
     v4lutils vaapi vdpau vim vim-pager vim-syntax vorbis vulkan wayland
     webcam webchannel webengine webm webp widgets wifi wireless wxwidgets
     x264 x265 xinerama xml yaml zip zstd -ppp"