Bug#876861: Cannot cross-compile on stretch

[Enrico Zini <enrico@debian.org>]

Package: qt5-qmake
Version: 5.7.1+dfsg-3+b1
Severity: normal

Hello,

I am trying to cross-compile plain qt packages for armhf from amd64 on a plain
stretch system, and failing spectacularly.

If I follow this guide: https://wiki.debian.org/CrossCompiling
or this guide: http://suihkulokki.blogspot.it/2017/06/cross-compiling-with-debian-stretch.html

And run this on a qt package (I tried pumpa):

  sudo apt-get build-dep -a armhf .
  dpkg-buildpackage -aarmhf --b

it still tries to build amd64 code.

If I do the same on a package that doesn't use qmake (I tried bc), then I get
an armhf package.

This page is full of "failed: armhf [qmake5 is broken]" notes:
http://spock.subdivi.de/~helmut/report.html is full of 

I didn't see a bug reported for any of this, so here it is.

Is cross-building qt packages using qmake supported in stretch at all?


Enrico


-- System Information:
Debian Release: 9.1
  APT prefers stable-debug
  APT policy: (500, 'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages qt5-qmake depends on:
ii  libc6       2.24-11+deb9u1
ii  libgcc1     1:6.3.0-18
ii  libstdc++6  6.3.0-18
ii  qtchooser   63-g13a3d08-1

qt5-qmake recommends no packages.

qt5-qmake suggests no packages.

-- no debconf information