Bug#1115108: extra-cmake-modules: -Wl,--fatal-warnings GCS breakage on arm64

[Adrian Bunk <bunk@debian.org>]

On Tue, Sep 16, 2025 at 06:25:12PM +0200, Patrick Franz wrote:
> Hi,

Hi Patrick,

> are we supposed to make warnings non-fatal just because one single 
> warning turns out to be harmless ?

when was the last time this has caught a non-harmless issue?

A warning is not an error.

Tools already give an error for issues they consider non-harmless, 
and one can selectively turn additional warnings into errors for    
issues one considers non-harmless.

Passing --fatal-warnings to the linker is similar to passing -Werror to 
the compiler:
A non-default option that can be very useful in an upstream CI to catch 
new warnings, but in a distribution it breaks too often.

For compiler warnings extra-cmake-modules already does this selectively
with "-Werror=return-type -Werror=init-self -Werror=undef".

> Med vänliga hälsningar
> 
> Patrick Franz

cu
Adrian