[Pkg-xmpp-devel] Bug#941399: dino-im FTCBFS: configures for the build architecture

[Helmut Grohne]

Hi Martin,

On Mon, Sep 30, 2019 at 05:07:09PM +0200, Martin wrote:
> Note this remark by upstream in xmpp:chat at dino.im?join :
> 
> > [12:55:59] ‎larma‎: debacle: I did cross compile dino. You
> > probably don't want to use the ./configure script for it, but
> > use CMake directly

Yes, that's what my patch did.

> ‎> [13:00:14] ‎larma‎: All I had to do was to set PKG_CONFIG_PATH
> > and CMAKE_TOOLCHAIN_FILE

In Debian, PKG_CONFIG_PATH is set by a cross wrapper. We set
PKG_CONFIG_EXECUTABLE. dh_auto_configure takes care of that and it
generally just works.

> ‎> [13:01:13] ‎larma‎: We don't use valac's compilation feature (we
> > only use it for transpiling), so there shouldn't be any issues
> > specific to vala
> ‎> [13:03:29] ‎larma‎: But that was on Fedora, not Debian

That's good. The problem here is with the packaging of valac, not with
dino-im. We need a valac for the build architecture (to be able to run
it), but dependency resolution gets us a host architecture one.
Executing it yields an "Exec format error". It needs to be fixed on the
valac side. I expect that dino-im cross builds just fine once we fix the
packaging of valac. Thanks for your help.

Unfortunately, fixing the valac side is not trivial, because it also
supports a compiling mode. Also unfortunately, the valac maintainers
seem to be very busy and unable to reply to bug reports in a timely
manner.

Helmut