{ubuntu-trusty,linuxmint-17}-gcc_spkg: numpy, ntl, nauty, ... fail to build

[mkoeppe]

We install a modern gcc, but without modern binutils we get a lot of errors like this:

  [nauty-27r1.p1]   /tmp/cch93yUy.s:4216: Error: no such instruction: `vmovdqu8 (%rbx),%xmm3'
  [nauty-27r1.p1]   /tmp/cch93yUy.s:4218: Error: no such instruction: `vmovdqu8 %xmm3,(%rcx)'
  [nauty-27r1.p1]   /tmp/cch93yUy.s:4220: Error: no such instruction: `vmovdqu8 -16(%rbx,%rax),%xmm4'

(https://github.com/sagemath/sage/runs/3151314694?check_suite_focus=true)

So in this ticket we drop these configurations (added in #31526) from the CI.

(debian-jessie-gcc_spkg and centos-7-gcc_spkg do not appear to be affected by this problem.)

We also restore the configuration centos-7-i386-gcc_spkg, which had been dropped by an editing mistake in #31526.

CC: @kliem @dimpase

Component: porting

Author: Matthias Koeppe

Branch/Commit: dc1acfd

Reviewer: Jonathan Kliem

Issue created by migration from https://trac.sagemath.org/ticket/32281

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

Branch: u/mkoeppe/_ubuntu_trusty_linuxmint_17__gcc_spkg__numpy__ntl__nauty______fail_to_build

[mkoeppe]

Commit: dc1acfd

[mkoeppe]

New commits:

dc1acfd

.github/workflows/tox-{optional,experimental}.yml: Remove ubuntu-trusty-gcc_spkg, linuxmint-17-gcc_spkg; restore centos-7-i386-gcc_spkg

[kliem]

comment:7

This approach is fine. A different apporach is to compile with SAGE_FAT_BINARY which might be a solution here. However, I don't know if it is worth it for such old systems.

[kliem]

Reviewer: Jonathan Kliem

[mkoeppe]

comment:9

Replying to @kliem:

A different apporach is to compile with SAGE_FAT_BINARY which might be a solution here. However, I don't know if it is worth it for such old systems.

Let's not do that, it's getting too complicated

[mkoeppe]

comment:10

Let's get this in please.

[kliem]

comment:11

Sorry, I forgot about this.

[vbraun]

Changed branch from u/mkoeppe/_ubuntu_trusty_linuxmint_17__gcc_spkg__numpy__ntl__nauty______fail_to_build to dc1acfd