Dmitry Shachnev:
> Package: debhelper
> Version: 10.9
> Severity: wishlist
> Tags: patch
>
> Dear debhelper maintainers,
>
> I am attaching two patches against Git master that should make packages
> using qmake buildsystem cross-buildable (at least some of them).
>
> The first patch sets the proper toolchain commands, the second one adds
> a very basic qt.conf so that qmake searches for Qt headers in a proper
> location. It was enough in my case, but we may extend it with other paths
> later if needed.
>
> --
> Dmitry Shachnev
>
> [...]
Hi Dmitry,
Thanks for providing this patch set. :)
I am CC'ing Helmut, who is usually on top of cross-building for his input.
I have done a quick review and with my remarks below:
[patch1]
> @@ -52,6 +52,10 @@ sub configure {
>
> push @options, '-makefile';
> push @options, '-nocache';
> + if (is_cross_compiling()) {
> + # Force generic mkspec to avoid -m32 / -m64 flags
> + push @options, ("-spec", "linux-g++");
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
I believe we rely on cross-builds producing bit-for-bit identical output
with a native build as a part of the QA. If so, then this need to be
unconditional (possibly in a later compat level).
If the -spec option is used, then I will need something that also works
for other architectures/OSes. It is fine if it is a stable of known
OSes mapped to their option (like we do for cmake).
[patch2]
> @@ -55,6 +56,14 @@ sub configure {
> if (is_cross_compiling()) {
> # Force generic mkspec to avoid -m32 / -m64 flags
> push @options, ("-spec", "linux-g++");
> +
> + my ($fh, $filename) = tempfile("qt.XXXX", SUFFIX => ".conf",
> TMPDIR => 1, UNLINK => 1);
> + $fh->print("[Paths]\n");
> + $fh->print("Prefix=/usr\n");
> + $fh->print("HostData=lib/" .
> dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "/qt5\n");
> + $fh->print("Headers=include/" .
> dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "/qt5\n");
These two lines should almost certainly use DEB_HOST_MULTIARCH. :)
Thanks,
~Niels
