Tested on a RPI, removing either -flto or -mcpu=arm1176jzf-s as the source seems to enable -march=armv6j+fp by default. I think the solution here is to just use replace-flags as the current rpi documentation recommends setting it so is going to cause a papercut for users. Steps to reproduce 1. setup armv6 stage3 2. COMMON_FLAGS="-Os -pipe -mcpu=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -flto" 3. emerge -va sys-process/btop Linking and optimizing binary... armv6j-unknown-linux-musleabihf-g++ -o bin/btop obj/btop.o obj/btop_config.o obj/btop_draw.o obj/btop_input.o obj/btop_menu.o obj/btop_shared.o obj/btop_theme.o obj/btop_tools.o obj/linux/btop_collect.o -Wl,-O1 -Wl,--as-needed -pthread -D_FORTIFY_SOURCE=2 -D_GLIBCXX_ASSERTIONS -D_FILE_OFFSET_BITS=64 -fexceptions -fstack-clash-protection -fstack-protector -Wall -Wextra -pedantic lto1: warning: switch '-mcpu=arm1176jzf-s' conflicts with switch '-march=armv6j+fp'
# emerge --info Portage 3.0.58 (python 3.11.7-final-0, default/linux/arm/23.0/armv6j_hf/musl/hardened, gcc-13, musl-1.2.4-r1, 6.1.11-gentoo-dist armv7l) ================================================================= System uname: Linux-6.1.11-gentoo-dist-armv7l-ARMv8_Processor_rev_0_-v8l-with-libc KiB Mem: 65768708 total, 28093444 free KiB Swap: 8392700 total, 8391932 free Timestamp of repository gentoo: Sat, 23 Dec 2023 18:30:01 +0000 Head commit of repository gentoo: 64c1501bf9edc0a5daa4d4759275a0a9725be8bd sh bash 5.2_p21-r1 ld GNU ld (Gentoo 2.40 p5) 2.40.0 app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p21-r1::gentoo dev-lang/perl: 5.38.2::gentoo dev-lang/python: 3.11.7::gentoo, 3.12.1::gentoo dev-util/cmake: 3.28.1::gentoo dev-util/meson: 1.3.0-r2::gentoo sys-apps/baselayout: 2.14-r1::gentoo sys-apps/openrc: 0.52.1::gentoo sys-apps/sandbox: 2.38::gentoo sys-devel/autoconf: 2.71-r7::gentoo sys-devel/automake: 1.16.5-r1::gentoo sys-devel/binutils: 2.40-r5::gentoo, 2.41-r2::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/gcc: 13.2.1_p20231014::gentoo sys-devel/gcc-config: 2.11::gentoo sys-devel/libtool: 2.4.7-r1::gentoo sys-devel/make: 4.4.1-r1::gentoo sys-kernel/linux-headers: 6.6::gentoo (virtual/os-headers) sys-libs/musl: 1.2.4-r1::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 volatile: False sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 3 sync-rsync-extra-opts: Binary Repositories: gentoobinhost priority: 1 sync-uri: https://gentoo.osuosl.org/releases/arm/binpackages/17.0/armv6j_hardfp_musl ACCEPT_KEYWORDS="arm ~arm" ACCEPT_LICENSE="*" CBUILD="armv6j-unknown-linux-musleabihf" CFLAGS="-Os -pipe -mcpu=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -flto" CHOST="armv6j-unknown-linux-musleabihf" CONFIG_PROTECT="/boot/cmdline.txt /boot/config.txt /etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/sandbox.d" CXXFLAGS="-Os -pipe -mcpu=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -flto" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="--jobs 16 --load-average 32" 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="-Os -pipe -mcpu=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -flto" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync news parallel-fetch pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-Os -pipe -mcpu=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard -flto" GENTOO_MIRRORS="http://distfiles.gentoo.org" INSTALL_MASK="charset.alias /usr/share/locale/locale.alias" LANG="C.UTF8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LEX="flex" PKGDIR="/var/cache/binpkgs" 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" SHELL="/bin/bash" USE="acl arm bzip2 crypt hardened iconv ipv6 lto lzma ncurses nls nptl pam pcre pgo pic pie readline seccomp ssl ssp test-rust unicode xattr xtpax zlib zstd" ADA_TARGET="gnat_2021" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_anon authn_dbm authn_file authz_dbm authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir env expires ext_filter file_cache filter headers include info log_config logio 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_ARM="edsp thumb v4 v5 v6" ELIBC="musl" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 ntrip navcom oceanserver oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 tsip tripmate tnt ublox" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz glk hd44780 lb216 lcdm001 mtxorb text" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-1" POSTGRES_TARGETS="postgres15" PYTHON_SINGLE_TARGET="python3_11" PYTHON_TARGETS="python3_11" RUBY_TARGETS="ruby31" VIDEO_CARDS="exynos fbdev omap dummy" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, MAKEOPTS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
Created attachment 880278 [details] build log
-march is never set in btop's source code, but in the arm profiles. This doesn't look like something I can or should fix in the ebuild. Maybe someone with more experience has an opinion on this?
