Bug#775050: FTCBFS for arm64: failure to determine stack direction

[peter green]

Note: not wearing any partciular hat in this message, opinions are my own.

Helmut Grohne wrote:
> Package: src:libsigsegv
> Version: 2.10-4
> Tags: patch
> User: helmutg at debian.org
> Usertags: rebootstrap
>
> libsigsegv FTCBFS for arm64. 
Can you confirm that FTCBFS stands for "fails to cross build from source"?

> The configure script fails to determine the
> stack direction. The general way of determining stack direction in
> libsigsegv is to have a long list of cpu names to look up the stack
> direction and only then fall back to doing a compile-run test. For
> native builds this check makes the package work for arm64, but it cannot
> be run while cross compiling.
>
> I argue that since libsigsegv covers lots of other architectures, it
> should also cover arm64 (consistency). Alternatively, one can argue that
> cross builders should set sv_cv_stack_direction. If you believe that the
> latter is the right way to go, please close this bug after tagging it
> wont-fix.
>   
I do not know enough about autotools cross-building to get involved in 
the argument over which approach is better.

However I would expect that either way the release team will consider 
this something that should be dealt with post-jessie.

> I am attaching a patch that adds the cached value for arm64. From a
> quick glance it seems or1k isn't covered either.
>
> Helmut
>
>
>