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CaptainBlood
Advocate
Joined: 24 Jan 2010
Posts: 3858
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 Posted: Sun Sep 22, 2024 10:45 pm Post subject: sys-devel/gcc forced -O2? Upstream? |
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I have a feeling sys-devel/gcc forces -O2 as I recently failed trying to change it?
Thks 4 ur attention, interest & support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. "
Last edited by CaptainBlood on Mon Sep 23, 2024 11:02 pm; edited 3 times in total |
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Hu
Administrator
Joined: 06 Mar 2007
Posts: 22646
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| Posted: Sun Sep 22, 2024 11:34 pm Post subject: |
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| Per eclass/toolchain.eclass, if you do not USE=custom-cflags, then yes, this is forced, because too many people had problems with overly aggressive CFLAGS. |
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Ionen
Developer
Joined: 06 Dec 2018
Posts: 2852
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| Posted: Sun Sep 22, 2024 11:48 pm Post subject: |
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| Actually, it has a special rule for -O3 where it'll use the custom target "bootstrap-O3" and then filter it (this lets upstream handle using -O3 similarly to lto with bootstrap-lto). It should use -O3 for most of the build (regardless of custom-cflags), and seems to use it fine for me at a glance. |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3858
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| Posted: Mon Sep 23, 2024 6:23 am Post subject: |
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Well,
didn't show custom-flags for some reason.
Thus confused pov.
Target is to lower the value here.
Thks 4 ur attention, interest & support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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CaptainBlood
Advocate
Joined: 24 Jan 2010
Posts: 3858
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| Posted: Mon Sep 23, 2024 11:00 pm Post subject: |
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I actually meant forced by upstream, not gentoo portage tree.
custom-cflags in make.conf for years now.
Currently testing with | Code: | emerge --info
Portage 3.0.65 (python 3.11.10-final-0, default/linux/amd64/23.0/split-usr, gcc-13, glibc-2.39-r6, 6.11.0-gentoo-std x86_64)
=================================================================
System uname: Linux-6.11.0-gentoo-std-x86_64-Intel-R-_Core-TM-_i3-6100_CPU_@_3.70GHz-with-glibc2.39
KiB Mem: 3930288 total, 1452196 free
KiB Swap: 200772604 total, 200208364 free
Timestamp of repository gnu-elpa: Mon, 23 Sep 2024 13:04:53 +0000
Head commit of repository gnu-elpa: 91735c2504deb8600cadfa872720b6bf9d07a3e8
Timestamp of repository guru: Mon, 23 Sep 2024 12:34:31 +0000
Head commit of repository guru: 72a9f384ec6107ccbc5a50ef43299d4739d01fc5
Timestamp of repository melpa: Mon, 23 Sep 2024 13:04:53 +0000
Head commit of repository melpa: f691c3bd55901c573549f88627afd128e94943ab
Timestamp of repository mv: Mon, 23 Sep 2024 05:44:47 +0000
Head commit of repository mv: 9395ca144a6b7e47993cad8742f86e80050d3f98
Timestamp of repository gentoo: Mon, 23 Sep 2024 18:15:00 +0000
Head commit of repository gentoo: d77f23603b2349453cefd6a66c05cedd2d6ce227
sh bash 5.2_p32-r1
ld GNU ld (Gentoo 2.42 p3) 2.42.0
distcc 3.4 x86_64-pc-linux-gnu [disabled]
app-misc/pax-utils: 1.3.7::gentoo
app-shells/bash: 5.2_p32-r1::gentoo
dev-build/autoconf: 2.13-r8::gentoo, 2.71-r7::gentoo
dev-build/automake: 1.16.5-r2::gentoo
dev-build/cmake: 3.30.2::gentoo
dev-build/libtool: 2.4.7-r4::gentoo
dev-build/make: 4.4.1-r1::gentoo
dev-build/meson: 1.5.1::gentoo
dev-java/java-config: 2.3.4::gentoo
dev-lang/perl: 5.40.0::gentoo
dev-lang/python: 2.7.18_p16-r2::gentoo, 3.10.15_p1::gentoo, 3.11.10_p1::gentoo, 3.12.6_p2::gentoo
dev-lang/rust: 1.81.0::gentoo
sys-apps/baselayout: 2.15::gentoo
sys-apps/openrc: 0.54.2::gentoo
sys-apps/sandbox: 2.39::gentoo
sys-devel/binutils: 2.42-r1::gentoo
sys-devel/binutils-config: 5.5.2::gentoo
sys-devel/clang: 15.0.7-r3::gentoo, 18.1.8::gentoo, 19.1.0::gentoo
sys-devel/gcc: 13.3.1_p20240614::gentoo, 14.2.1_p20240921::gentoo
sys-devel/gcc-config: 2.11::gentoo
sys-devel/lld: 19.1.0::gentoo
sys-devel/llvm: 15.0.7-r7::gentoo, 17.0.6-r3::gentoo, 18.1.8-r4::gentoo, 19.1.0::gentoo
sys-kernel/linux-headers: 6.10::gentoo (virtual/os-headers)
sys-libs/glibc: 2.39-r6::gentoo
Repositories:
gnu-elpa
location: /var/db/repos/gnu-elpa
sync-type: git
sync-uri: https://github.com/gentoo-mirror/gnu-elpa.git
masters: gentoo
priority: -10001
volatile: False
guru
location: /var/db/repos/guru
sync-type: git
sync-uri: https://github.com/gentoo-mirror/guru.git
masters: gentoo
priority: -10001
volatile: False
melpa
location: /var/db/repos/melpa
sync-type: git
sync-uri: https://github.com/gentoo-mirror/melpa.git
masters: gnu-elpa gentoo
priority: -10001
volatile: False
mv
location: /var/db/repos/mv
sync-type: git
sync-uri: https://github.com/gentoo-mirror/mv.git
masters: gentoo
priority: -10001
volatile: False
gentoo
location: /var/db/repos/gentoo
sync-type: rsync
sync-uri: rsync://rsync.europe.gentoo.org/gentoo-portage
priority: -1000
volatile: False
sync-rsync-extra-opts:
sync-rsync-verify-jobs: 1
sync-rsync-verify-metamanifest: yes
sync-rsync-verify-max-age: 24
local
location: /var/db/repos/local
masters: gentoo
priority: 10000
volatile: False
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O1 -march=native -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.9/conf"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php8.2/ext-active/ /etc/php/cgi-php8.2/ext-active/ /etc/php/cli-php8.2/ext-active/ /etc/php/fpm-php8.2/ext-active/ /etc/php/phpdbg-php8.2/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/splash /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-O1 -march=native -pipe"
DISTDIR="/var/cache/distfiles"
EMERGE_DEFAULT_OPTS="--alert y --alphabetical --ask-enter-invalid --autounmask y --autounmask-only n --autounmask-unrestricted-atoms y --autounmask-write y --complete-graph y --misspell-suggestions n --noconfmem --nospinner --tree --with-bdeps y"
ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME"
FCFLAGS="-march=core2 -mtune=native -O2 -pipe -Wa,-mbranches-within-32B-boundaries "
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live compress-build-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync merge-wait multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms split-elog strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync"
FFLAGS="-march=core2 -mtune=native -O2 -pipe -Wa,-mbranches-within-32B-boundaries "
GENTOO_MIRRORS="http://gentoo.mirrors.ovh.net/gentoo-distfiles/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ http://ftp.halifax.rwth-aachen.de/gentoo/ http://ftp.free.fr/mirrors/ftp.gentoo.org/ http://mirrors.soeasyto.com/distfiles.gentoo.org/ http://mirror.eu.oneandone.net/linux/distributions/gentoo/gentoo/ http://mirror.leaseweb.com/gentoo/ http://www.mirrorservice.org/sites/distfiles.gentoo.org/ http://ftp.belnet.be/pub/rsync.gentoo.org/gentoo/ http://mirror.bytemark.co.uk/gentoo/"
LANG="fr_FR.utf8"
LDFLAGS="-Wl,-O1 -Wl,-fuse-ld=mold "
LEX="flex"
LINGUAS="fr"
MAKEOPTS="-j3 -l3"
PKGDIR="/var/cache/binpkgs"
PORTAGE_COMPRESS="lzma"
PORTAGE_COMPRESS_FLAGS="-9"
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"
RUSTFLAGS="-Ctarget-cpu=native -Cllvm-args=-x86-branches-within-32B-boundaries "
SHELL="/bin/bash"
USE="amd64 asm custom-cflags emacs eselect-ldso fortran gentoo-vm gtk-doc minimal modules-compress modules-sign ocamlopt pgo split-usr test-rust verify-sig" ABI_X86="64" ALSA_CARDS="hda-intel" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt rdrand sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput" KERNEL="linux" L10N="fr" LUA_SINGLE_TARGET="lua5-4" LUA_TARGETS="lua5-4" PERL_FEATURES="ithreads" PHP_TARGETS="php8-2" PYTHON_SINGLE_TARGET="python3_11" PYTHON_TARGETS="python3_11" QEMU_USER_TARGETS="aarch64" RUBY_TARGETS="ruby32" VIDEO_CARDS="intel"
Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LFLAGS, LIBTOOL, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, RANLIB, READELF, SIZE, STRINGS, STRIP, YACC, YFLAGS |
echoed build log returns -02 whereas -01 from above is expected.
/etc/portage/package.env has been cleaned up to not interfere.
-march=native is properly taken into account here.
-02 seems hardcoded to me.
Thks 4 ur attention, interest & support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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Ionen
Developer
Joined: 06 Dec 2018
Posts: 2852
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| Posted: Tue Sep 24, 2024 1:09 am Post subject: |
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| Oh you want -O1, you'll need USE=custom-cflags for that then but the USE is masked so you have to unmask it first for it to take effect if really want that. |
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stefan11111
l33t
Joined: 29 Jan 2023
Posts: 934
Location: Romania
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| Posted: Tue Sep 24, 2024 3:47 pm Post subject: |
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Why use -O1 globally?
It's not like -O2 is broken or something.
If you're using -O1 to avoid -fstrict-aliasing, you can just put -O2 -fno-strict-aliasing in CFLAGS
_________________
My overlay: https://github.com/stefan11111/stefan_overlay
INSTALL_MASK="/etc/systemd /lib/systemd /usr/lib/systemd /usr/lib/modules-load.d *udev* /usr/lib/tmpfiles.d *tmpfiles* /var/lib/dbus /usr/bin/gdbus /lib/udev" |
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