[cfarm-users] gcc230: Unable to use GDB on 64-bit mips executable

[Paul H. Hargrove]

In the past, I successfully "venture[d] to compile a 64-bit debugger with
corresponding dependencies".

On cfarm230, I have an ancient 64-bit GDB 8.0.1, built in 2017 on a
previous big-endian MIPS64 GCC CFarm machine.
IIUC, Pierre reports it is (so far) working for his current needs.

I've symlinked from my GDB install to /opt/cfarm/gdb-8.0.1.
However, Pierre reported that the symlink gave permission denied errors,
while direct access to the symlink target worked fine.
No clue what's up with that.

-Paul


On Tue, Jun 17, 2025 at 1:07 PM Andy Polyakov via cfarm-users <
cfarm-users at lists.tetaneutral.net> wrote:

> > it *might* be possible to 'dpkg --add-architecture mips64' followed by
>
> This doesn't seem to be possible. Debian doesn't provide mips64 packages
> for big-endian[!] mips. I apologize for the distraction. On related
> note, they seem to have removed big-endian mips from their dist mirrors
> altogether, one has to pull them from archive.debian.org.
>
> > As for gdb, see if gdb-multiarch package works with 64-bit applications.
>
> The point is that gdb with multiarch allows you to remotely debug
> multiple "alien" architectures and it should handle multiple ABIs on the
> same machine. If the package doesn't work, then one would have to either
> figure out how to make the multiarch config work, or venture to compile
> a 64-bit debugger with corresponding dependencies. Debian has given up
> on big-endian mips.
>
> Cheers.
>
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> cfarm-users at lists.tetaneutral.net
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>


-- 
Paul H. Hargrove <PHHargrove at lbl.gov>
Pronouns: he, him, his
Computer Languages & Systems Software (CLaSS) Group
Computer Science Department
Lawrence Berkeley National Laboratory
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