| Summary: | Compiling >=sys-devel/gcc-5 with a cross-compiler using architecture dependent CXXFLAGS fails with "g++: error: unrecognized command line option" | ||
|---|---|---|---|
| Product: | Gentoo Linux | Reporter: | Peter Levine <plevine457> |
| Component: | Current packages | Assignee: | Gentoo Crossdev team <crossdev> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | chewi, landshark, matoro_bugzilla_gentoo, netbox253, plevine457, slyfox, wtt6, xaviermiller |
| Priority: | Normal | ||
| Version: | unspecified | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Package list: | Runtime testing required: | --- | |
| Attachments: |
armv7a-hardfloat-linux-gnueabi-emerge --info
sys-devel:gcc-5.2.0:20160428-015537.log gcc-5-respect-build-cxxflags.patch gcc-build-logs.tar.bz2 |
||
|
Description
Peter Levine
2016-04-28 02:14:05 UTC
Created attachment 432356 [details]
armv7a-hardfloat-linux-gnueabi-emerge --info
Created attachment 432358 [details]
sys-devel:gcc-5.2.0:20160428-015537.log
Created attachment 432360 [details, diff]
gcc-5-respect-build-cxxflags.patch
This is a patch to gcc-5.* to properly handle CXXFLAGS_FOR_BUILD in its Makefile. It applies cleanly to gcc-5.1.0, gcc-5.2.0, and gcc-5.3.0.
Created attachment 447296 [details] gcc-build-logs.tar.bz2 # armv6j-hardfloat-linux-gnueabi-emerge --info '=sys-devel/gcc-5.4.0::gentoo' Portage 2.3.1 (python 2.7.12-final-0, default/linux/arm/13.0/armv6j, gcc-5.4.0, glibc-2.23-r2, 4.7.4-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-4.7.4-gentoo-x86_64-Intel-R-_Celeron-R-_2957U_@_1.40GHz-with-gentoo-2.3 KiB Mem: 3967644 total, 470888 free KiB Swap: 2097148 total, 2097124 free Timestamp of repository gentoo: Tue, 20 Sep 2016 08:30:01 +0000 sh bash 4.3_p46 ld GNU ld (Gentoo 2.26.1 p1.0) 2.26.1 distcc 3.2rc1 x86_64-gentoo-linux-gnu [disabled] app-shells/bash: 4.3_p46::gentoo dev-lang/python: 3.4.5::gentoo sys-apps/baselayout: 2.3::gentoo sys-apps/openrc: 0.21.7::gentoo sys-apps/sandbox: 2.10-r2::gentoo sys-devel/binutils: 2.26.1::gentoo sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/make: 4.2.1::gentoo sys-kernel/linux-headers: 4.7::gentoo (virtual/os-headers) sys-libs/glibc: 2.23-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 local location: /usr/local/portage/overlay masters: gentoo proaudio gentoo-kodi-overlay priority: 0 gentoo-kodi-overlay location: /usr/local/portage/gentoo-kodi-overlay masters: gentoo priority: 1 proaudio location: /var/lib/layman/proaudio masters: gentoo priority: 50 xmw location: /var/lib/layman/xmw masters: gentoo priority: 50 ACCEPT_KEYWORDS="arm ~arm" ACCEPT_LICENSE="@FREE as-is freedist" CBUILD="x86_64-gentoo-linux-gnu" CFLAGS="-O2 -pipe -march=armv6j -mfpu=vfp -mfloat-abi=hard -fomit-frame-pointer" CHOST="armv6j-hardfloat-linux-gnueabi" CONFIG_PROTECT="/boot/cmdline.txt /boot/config.txt /etc /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-php7.0/ext-active/ /etc/php/cgi-php7.0/ext-active/ /etc/php/cli-php7.0/ext-active/ /etc/revdep-re" CXXFLAGS="-O2 -pipe -march=armv6j -mfpu=vfp -mfloat-abi=hard -fomit-frame-pointer" DISTDIR="/data/raspi_root/var/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps y --quiet-build=n --buildpkg" FCFLAGS="-O2 -pipe -march=armv6j" FEATURES="assume-digests binpkg-logs buildpkg candy config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerg" FFLAGS="-O2 -pipe -march=armv6j" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="fr_BE.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j5 -l2" PKGDIR="/data/raspi_root/var/portage/packages" PORTAGE_CONFIGROOT="/usr/armv6j-hardfloat-linux-gnueabi/" 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=/." PORTAGE_TMPDIR="/var/tmp" USE="arm bzip2 cli cracklib crypt cxx dri iconv modules ncurses nls nptl openmp pcre readline seccomp session sqlite ssl tcpd unicode xattr zlib" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_" Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON With attachment 432360 [details, diff], gcc-5.4.0 can be cross-compiled
Confirming the cross-building failure in my armv7a environment for gcc-5.4.0-r3.
Applying attachment 432360 [details, diff] makes it build.
This is still a problem in 6.4.0 (the patch still applies) and I can see that it hasn't even been fixed in gcc master. :( This is still somehow an issue on =sys-devel/gcc-8.2.0-r2. How has this patch not been either 1) added to the official gentoo patchset or 2) merged upstream? (In reply to matoro from comment #8) > This is still somehow an issue on =sys-devel/gcc-8.2.0-r2. How has this > patch not been either 1) added to the official gentoo patchset or 2) merged > upstream? No reason. Feel free to send it upstream and post a link here. The patch looks reasonable. I'll test it locally and apply to gentoo's gcc if it works. The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=52d8f44f45d244184d737cec5a26a1754f877e75 commit 52d8f44f45d244184d737cec5a26a1754f877e75 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-09-15 18:40:09 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-09-15 18:40:09 +0000 Pass CXXFLAGS as CXXFLAGS_FOR_BUILD to stage1. Fixes build failure when CXXFLAGS contains TARGET-specific flags. Tested on x86_64-pc-linux-gnu host as: # CFLAGS='-O2 -mfpu=neon-vfpv4' CXXFLAGS='-O2 -mfpu=neon-vfpv4' \ armv7a-unknown-linux-gnueabihf-emerge -v1 sys-devel/gcc --quiet-build=n Fix by Peter Levine. Bug: https://bugs.gentoo.org/581406 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 5.4.0/gentoo/98_all_respect-build-cxxflags.patch | 39 +++++++++++++++++++++++ 5.4.0/gentoo/README.history | 2 ++ 6.4.0/gentoo/102_all_respect-build-cxxflags.patch | 39 +++++++++++++++++++++++ 6.4.0/gentoo/README.history | 1 + 7.3.0/gentoo/100_all_respect-build-cxxflags.patch | 39 +++++++++++++++++++++++ 7.3.0/gentoo/README.history | 1 + 8.2.0/gentoo/102_all_respect-build-cxxflags.patch | 39 +++++++++++++++++++++++ 8.2.0/gentoo/README.history | 1 + 8 files changed, 161 insertions(+) Patch is included in next patchset for 5.4.0, 6.4.0, 7.3.0, 8.2.0. Meanwhile you can use /etc/portage/patches/ mechanism to workaround the failure. The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fb5d77d453273447b9a1d7c63a0f8a09b0840e84 commit fb5d77d453273447b9a1d7c63a0f8a09b0840e84 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-09-23 21:04:12 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-09-23 22:35:59 +0000 sys-devel/gcc: cut 1.10 patchset for 5.4.0 One new patch: + 98_all_respect-build-cxxflags.patch fix cross-build for arch-specific CXXFLAGS Bug: https://bugs.gentoo.org/581406 Package-Manager: Portage-2.3.49, Repoman-2.3.11 sys-devel/gcc/Manifest | 1 + sys-devel/gcc/gcc-5.4.0-r5.ebuild | 44 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a8ff963554a3e28f8cd5905180b5c5428d1df7b8 commit a8ff963554a3e28f8cd5905180b5c5428d1df7b8 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-09-23 20:54:48 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-09-23 22:35:58 +0000 sys-devel/gcc: cut 1.7 patchset for 6.4.0 Two new patches: + 101_all_x32-fix-eh-return-address.patch fix exception handler ABI on x32 + 102_all_respect-build-cxxflags.patch fix cross-build for arch-specific CXXFLAGS Bug: https://bugs.gentoo.org/664016 Bug: https://bugs.gentoo.org/581406 Package-Manager: Portage-2.3.49, Repoman-2.3.11 sys-devel/gcc/Manifest | 1 + sys-devel/gcc/gcc-6.4.0-r4.ebuild | 24 ++++++++++++++++++++++++ 2 files changed, 25 insertions(+) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fd1aa67de92c05d6a066e84ba5cd4236e637629e commit fd1aa67de92c05d6a066e84ba5cd4236e637629e Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-09-23 20:48:40 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-09-23 22:35:58 +0000 sys-devel/gcc: cut 1.7 patchset for 7.3.0 Three new patches: + 98_all_msp430-partial-int.patch: fix msp430 code generator on complex types + 99_all_x32-fix-eh-return-address.patch fix exception handler ABI on x32 + 100_all_respect-build-cxxflags.patch fix cross-build for arch-specific CXXFLAGS Bug: https://bugs.gentoo.org/664014 Bug: https://bugs.gentoo.org/664016 Bug: https://bugs.gentoo.org/581406 Package-Manager: Portage-2.3.49, Repoman-2.3.11 sys-devel/gcc/Manifest | 1 + sys-devel/gcc/gcc-7.3.0-r5.ebuild | 24 ++++++++++++++++++++++++ 2 files changed, 25 insertions(+) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c7ec432dc64cefa8de88292efcc134cc8e9306c9 commit c7ec432dc64cefa8de88292efcc134cc8e9306c9 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-09-23 20:36:46 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-09-23 22:35:58 +0000 sys-devel/gcc: cut 1.3 patchset for 8.2.0 Four new patches: + 101_all_x32-fix-eh-return-address.patch: fix exception handler ABI on x32 + 102_all_respect-build-cxxflags.patch: fix cross-build for arch-specific CXXFLAGS + 103_all_mmix-fix-85666-p1.patch + 104_all_mmix-fix-85666-p2.patch backport mmix support Bug: https://bugs.gentoo.org/664016 Bug: https://bugs.gentoo.org/581406 Package-Manager: Portage-2.3.49, Repoman-2.3.11 sys-devel/gcc/Manifest | 1 + sys-devel/gcc/gcc-8.2.0-r3.ebuild | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+) *** Bug 653898 has been marked as a duplicate of this bug. *** *** Bug 645920 has been marked as a duplicate of this bug. *** |
