openssh bugs - Apr 2024 - [Bug 3682] New: incorrectly thinks that -fzero-call-used-regs should work

https://bugzilla.mindrot.org/show_bug.cgi?id=3682

            Bug ID: 3682
           Summary: incorrectly thinks that -fzero-call-used-regs should
                    work
           Product: Portable OpenSSH
           Version: 9.7p1
          Hardware: ARM
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Build system
          Assignee: unassigned-bugs at mindrot.org
          Reporter: tadhgmister at gmail.com

When I run `./configure --host=arm-linux-gnueabihf` it gives this
indication in the output:
> checking if gcc supports compile flag -fzero-call-used-regs=used and
linking succeeds... yes
However when I then run `make channels.o` it fails saying this. (same
with sshkey.o and a few others)
> channels.c: In function ?channel_connect_ctx_free?:
> channels.c:4666:1: sorry, unimplemented: ?-fzero-call-used-regs? not
supported on this target
I suspect this is an issue with the current test script, most of the
files compile fine.  But as is I am unable to compile openssh for arm
systems without manually removing that flag. (or check from the
configure script)

-- 
You are receiving this mail because:
You are watching the assignee of the bug.

https://bugzilla.mindrot.org/show_bug.cgi?id=3682

Tadhg McDonald-Jensen <tadhgmister at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tadhgmister at gmail.com

-- 
You are receiving this mail because:
You are watching the assignee of the bug.

https://bugzilla.mindrot.org/show_bug.cgi?id=3682

Darren Tucker <dtucker at dtucker.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dtucker at dtucker.net

--- Comment #1 from Darren Tucker <dtucker at dtucker.net> ---
Which distro and compiler version are you using?

-- 
You are receiving this mail because:
You are watching someone on the CC list of the bug.
You are watching the assignee of the bug.

https://bugzilla.mindrot.org/show_bug.cgi?id=3682

--- Comment #2 from Tadhg McDonald-Jensen <tadhgmister at gmail.com> ---
arm-linux-gnueabihf-gcc (GCC) 11.3.0

I'm using GNU guix, if you are on another distro you can use the script
from here to get the guix command:
https://guix.gnu.org/manual/en/html_node/Installation.html
> guix build -K --target=arm-linux-gnueabihf openssh
> cd /tmp/guix-build-openssh-9.7p1.drv-0
> guix shell -D openssh
> source ./environment-variables
> cd openssh-9.7p1/
> make channels.o
The `guix build` reproduces the error, the rest of the commands go to
the failed build directory (which is saved by the -K argument, the `0`
at the end is auto-incremented if building multiple times) and
reproduce the error in a development friendly environment.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.
You are watching someone on the CC list of the bug.