Created attachment 645592 [details] build.log reproducible: always crossdev has been built with the following command and output crossdev --stable -t x86_64-multilib-linux-gnu -oO /var/db/repos/ryzen7-2700u-vega10 * crossdev version: 20200131 * Host Portage ARCH: amd64 * Host Portage System: x86_64-pc-linux-gnu (i686-pc-linux-gnu x86_64-pc-linux-gnu) * Target Portage ARCH: amd64 * Target System: x86_64-multilib-linux-gnu * Stage: 4 (C/C++ compiler) * USE=multilib: no * Target ABIs: amd64 * binutils: binutils-[stable] * gcc: gcc-[stable] * headers: linux-headers-[stable] * libc: glibc-[stable] * CROSSDEV_OVERLAY: /var/db/repos/ryzen7-2700u-vega10 * PORT_LOGDIR: /var/log/portage * PORTAGE_CONFIGROOT: / * Portage flags: * leaving metadata/layout.conf alone in /var/db/repos/ryzen7-2700u-vega10 have attached build.log and config.log for the command EXTRA_ECONF=--disable-cet x86_64-multilib-linux-gnu-emerge -1av --keep-going gcc
Created attachment 645594 [details] config.log
Filed upstream bug report as https://gcc.gnu.org/PR95811. The problem here stems from lack of $build != $host case handling: """ checking for CET support... configure: error: in `/tmp/portage-tmpdir/portage/sys-devel/gcc-10.1.0-r1/work/build/libiberty': configure: error: cannot run test program while cross compiling See `config.log' for more details """ config/cet.m4 has a single AC_TRY_RUN call: https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=config/cet.m4;h=911fbd4647577dd2adae4dcee316ea58eaf0cc8f;hb=HEAD#l117 It's strange because it's supposed to be under '$cross_compiling = no' case: 117 if test x$may_have_cet = xyes; then 118 if test x$cross_compiling = xno; then 119 AC_TRY_RUN([
Ah, it was fixed in master in https://gcc.gnu.org/PR94998. We need a backport or workaround of https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=d17cdc17c90ce77cb90c569322c1f241d3530cec.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=a0cceb035aac865eec1676a80ce04812cb83d4a2 commit a0cceb035aac865eec1676a80ce04812cb83d4a2 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2020-06-23 06:33:30 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2020-06-23 06:33:30 +0000 10.1.0: backport CET cross-compiler detection, PR95811 Reported-by: Aisha Tammy Bug: https://bugs.gentoo.org/729074 Bug: https://gcc.gnu.org/94998 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 10.1.0/gentoo/34_all_cet-cross-x86.patch | 149 +++++++++++++++++++++++++++++++ 10.1.0/gentoo/README.history | 1 + 2 files changed, 150 insertions(+)
Queued patch for next gcc-10.1.0 patch release. Release should be cut in ~a month. Meanwhile you can drop the patch https://gitweb.gentoo.org/proj/gcc-patches.git/plain/10.1.0/gentoo/34_all_cet-cross-x86.patch to /etc/portage/patches/ and/or /usr/{CTARGET}/etc/portage/patches/ to test it. Please check if patch works for you.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=ad32bf914e7dda8709a7adb8197bc43917be4f41 commit ad32bf914e7dda8709a7adb8197bc43917be4f41 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2020-07-04 07:44:32 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2020-07-04 07:44:32 +0000 10.1.0: cut 3 patchset Four new patches: + 33_all_avx512-scalar-PR95528.patch: fix ICE on small avx512 unpack + 34_all_cet-cross-x86.patch: backport CET cross-compilation fix + 35_all_ICE-array-subscript-PR95508.patch: fix ICE on some C++ array subscripts + 36_all_fno-delayed-branch.patch: disable -fdelayed-branch to to fix python mis-compilation. Bug: https://gcc.gnu.org/PR95528 Bug: https://bugs.gentoo.org/727028 Bug: https://gcc.gnu.org/94998 Bug: https://bugs.gentoo.org/729074 Bug: https://gcc.gnu.org/PR95508 Bug: https://bugs.gentoo.org/729434 Reported-by: Jeroen Roovers Bug: https://gcc.gnu.org/PR96015 Bug: https://bugs.gentoo.org/729570. Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 10.1.0/gentoo/README.history | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9a478857e97c4a4d2769ded41b859c5dcfc3cbf9 commit 9a478857e97c4a4d2769ded41b859c5dcfc3cbf9 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2020-07-04 07:54:40 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2020-07-04 08:09:16 +0000 sys-devel/gcc: 10.1.0: cut 3 patchset Four new patches: + 33_all_avx512-scalar-PR95528.patch: fix ICE on small avx512 unpack + 34_all_cet-cross-x86.patch: backport CET cross-compilation fix + 35_all_ICE-array-subscript-PR95508.patch: fix ICE on some C++ array subscripts + 36_all_fno-delayed-branch.patch: disable -fdelayed-branch to to fix python mis-compilation. Bug: https://gcc.gnu.org/PR95528 Bug: https://bugs.gentoo.org/727028 Bug: https://gcc.gnu.org/94998 Bug: https://bugs.gentoo.org/729074 Bug: https://gcc.gnu.org/PR95508 Bug: https://bugs.gentoo.org/729434 Reported-by: Jeroen Roovers Bug: https://gcc.gnu.org/PR96015 Bug: https://bugs.gentoo.org/729570. Package-Manager: Portage-2.3.103, Repoman-2.3.23 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> sys-devel/gcc/Manifest | 1 + sys-devel/gcc/gcc-10.1.0-r2.ebuild | 13 +++++++++++++ 2 files changed, 14 insertions(+)
Should be fixed by gcc-10.1.0-r2 in https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9a478857e97c4a4d2769ded41b859c5dcfc3cbf9
