[Bug ld/31277] New: building binutils targeting x86_64-linux-gnu on s390x-linux-gnu doesn't enable i686-linux-gnu

[doko at debian dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31277

            Bug ID: 31277
           Summary: building binutils targeting x86_64-linux-gnu on
                    s390x-linux-gnu doesn't enable i686-linux-gnu
           Product: binutils
           Version: 2.42
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: doko at debian dot org
  Target Milestone: ---

seeing this on the 2.42 branch.  did't see this building gcc-12 or gcc-13 cross
compilers, however a gcc-14 build (trunk) failed.

the x86_64-linux-gnu build is biarch by default, so building for 32bit as well,
however building a binutils on s390x-linux-gnu targeting x86_64-linux-gnu dails
in the 32bit subdir in libgcc that it doesn't understand 32bit x86.

This is working on host architectures like arm64, ppc64el, and probably others,
but not on s390x.

explicitly adding i686-linux-gnu to --enable-targets seems to do the job.

so why do I have to do that on s390x?

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