Bug 892874 – sys-devel/gcc: fails to cross-compile for powerpc-gentoo-linux-musl (dfp-bit.h:291:2: error: #error "unknown long double size, cannot define BFP_FMT")

• Product: Gentoo Linux
• Status: CONFIRMED ---

[Description Sam James 2023-02-02 00:35:10 UTC]

Created attachment 849664 [details]
gcc-build-logs.tar.xz

Repro steps:
1. crossdev powerpc-gentoo-linux-musl (this succeeds)
2. powerpc-gentoo-linux-musl-emerge -v1 sys-devel/gcc (fails)

Got the following:
```
/usr/powerpc-gentoo-linux-musl/tmp/portage/sys-devel/gcc-12.2.1_p20230121-r1/work/gcc-12-20230121/libgcc/dfp-bit.h:291:2: error: #error "unknown long double size, cannot define BFP_FMT"
```

----

# powerpc-gentoo-linux-musl-emerge --info
Portage 3.0.44 (python 3.11.1-final-0, embedded, gcc-12, unavailable, 6.1.8-gentoo-dist-hardened x86_64)
=================================================================
System uname: Linux-6.1.8-gentoo-dist-hardened-x86_64-AMD_Ryzen_9_3950X_16-Core_Processor-with-glibc2.36
KiB Mem:    65758020 total,   7026768 free
KiB Swap:    8290300 total,   4482044 free
Timestamp of repository gentoo: Wed, 01 Feb 2023 23:17:06 +0000
sh dash 0.5.12
ld GNU ld (Gentoo 2.40 p1) 2.40
ccache version 4.7.4 [disabled]
sys-devel/gcc-config: 2.10::gentoo
sys-libs/musl:        1.2.3-r6::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    volatile: True
    sync-rsync-verify-metamanifest: yes
    sync-rsync-verify-max-age: 24
    sync-rsync-extra-opts:
    sync-rsync-verify-jobs: 1

ACCEPT_KEYWORDS="ppc ~ppc"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -fomit-frame-pointer"
CHOST="powerpc-gentoo-linux-musl"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt"
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/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-O2 -pipe -fomit-frame-pointer"
DISTDIR="/var/cache/distfiles"
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"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news nodoc noinfo noman parallel-fetch pid-sandbox 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"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_GB.utf8"
LDFLAGS=""
LEX="reflex"
LINGUAS="en"
PKGDIR="/usr/powerpc-gentoo-linux-musl/var/cache/binpkgs/"
PORTAGE_CONFIGROOT="/usr/powerpc-gentoo-linux-musl/"
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="/usr/powerpc-gentoo-linux-musl/tmp/"
SHELL="/bin/bash"
USE="kdrive minimal multicall ppc zlib" ELIBC="musl" INPUT_DEVICES="evdev" KERNEL="linux" USERLAND="GNU" VIDEO_CARDS="fbdev"
YACC="byacc"
Unset:  ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LFLAGS, LIBTOOL, 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, YFLAGS

[Comment 1 Sam James 2023-02-09 01:14:22 UTC]

See also https://archives.gentoo.org/gentoo-dev/message/ae9ffb2055c768c70a40a4e672b85a2d.

[Comment 2 Andreas K. Hüttel 2023-08-25 16:17:29 UTC]

Is this still happening?

[Comment 3 immolo 2023-10-22 01:18:52 UTC]

Issue still occurs with sys-devel/gcc-13.2.1_p20231014