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Re: libffi illegal instruction - again

you have to add the following to your /etc/apt/sources.list to get the experimental packages

deb http://ftp.ports.debian.org/debian-ports/ experimental main

see here

On Wed, Nov 3, 2021, 10:42 AM Ken Cunningham <ken.cunningham.webuse@gmail.com> wrote:
It appears that when building portable code, the ax_gcc_archflag.m4 macro clears -mcpu for almost every arch except powerpc:


  case $host_cpu in i*86|x86_64*|amd64*) flag_prefixes="$flag_prefixes -mcpu= -m";; esac

The fact that PowerPC is excluded must result in m4 passing the “-mcpu=“ flag matching the buildbot’s CPU, and breaks everything older than the buildbot.

This must happen with any build that uses this ax_gcc_archflag.m4 macro.

I wonder why powerpc* is excluded? Seems like this line should rather be:

  case $host_cpu in i*86|x86_64*|powerpc*|amd64*) flag_prefixes="$flag_prefixes -mcpu= -m";; esac


PS. Although I did not as yet sort out getting the “experimental” packages (I keep getting an error when I try to use that option), building libffi in a couple of minutes on the local machine and installing that of course works easily. — K

> On Nov 2, 2021, at 2:01 PM, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote:
> On 11/2/21 21:59, Cameron MacPherson wrote:
>> i got the 3.4.2-3+ports package after apt upgrade -t experimental and there
>> are no illegal instructions
> As I expected. The build log didn't have any traces of "-mcpu=power8".
> Adrian
> --
> .''`.  John Paul Adrian Glaubitz
> : :' :  Debian Developer - glaubitz@debian.org
> `. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
>  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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