Leo Famulari <leo@famulari.name> writes:

> While testing the upgrade of our QEMU package to 4.0.0 or 4.1.0-rc3 on
> x86_64-linux, the build fails when the header 'gnu/stubs-32.h' can't be
> found:
>
> ------
> In file included from /gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/include/features.h:452:0,
>                  from /gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/include/bits/libc-header-start.h:33,
>                  from /gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/include/stdint.h:26,
>                  from linuxboot_dma.c:65:
> /gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
> compilation terminated.
> make[1]: *** [/tmp/guix-build-qemu-4.1.0-rc3.drv-0/qemu-4.1.0-rc3/rules.mak:69: linuxboot_dma.o] Error 1
> make[1]: Leaving directory '/tmp/guix-build-qemu-4.1.0-rc3.drv-0/qemu-4.1.0-rc3/pc-bios/optionrom'
> make: *** [Makefile:519: pc-bios/optionrom/all] Error 2
> ------
>
> And of course, this header is not installed by glibc when it is built
> for 64-bit systems.
>
> The header in question, 'stubs.h', looks like this:
>
> ------
> #if !defined __x86_64__
> # include <gnu/stubs-32.h>
> #endif
> #if defined __x86_64__ && defined __LP64__
> # include <gnu/stubs-64.h>
> #endif
> #if defined __x86_64__ && defined __ILP32__
> # include <gnu/stubs-x32.h>
> #endif
> ------
>
> When I build for i686-linux, it works as expected.
>
> Any advice? I'm not really sure what's going on here.

I don't know why it fails, but it works if you give it a newer GCC such
as the one on 'core-updates'.

I tried it with 4.0.0, but got stuck on two test failures.  Hopefully
4.1.0 is easier to debug...  :-)