[Qbs] How build 32 bit application on 64 host OS

[Christian Gagneraud]

On 18/10/2017 12:09 AM, Christian Kandeler wrote:
> On Tue, 17 Oct 2017 12:20:12 +0300 Карелин Павел <hkarel at yandex.ru>
> wrote:
> 
>> I'm working in Ubuntu 14.04, 64 bit. I use QtCreatir 4.4.1 Now I
>> needed to build a small qbs project for two architectures: intel 64
>> and 32 bits. I have installed qt4 system libraries, 64 and 32 bits
>> respectively. qmake - only 64 bits. Simultaneously install the
>> qmake to 64 and 32 bits - I can not, packages are mutually
>> exclusive.
> 
> Hm, doesn't that mean that one of the two Qt installations is
> incomplete with regards to developing for it? You cannot build qmake
> projects with the 32-bit version either, right? At the moment, qmake
> is our entry point for setting up the Qt modules using setup-qt. If
> you are working on the command line only, you might get away with
> installing the two packages one after the other (both with their
> associated qmake), calling setup-qt while they are "complete".
> However, in Qt Creator you always need the right qmake.

I have similar problem, and i'm starting to think that Ubuntu is broken 
(17.04).

You cannot even compile qt for x86_32 on a x86_64 host without breaking 
your distro due to package conflicts (Thiago told me it is doable on 
OpenSuse).

BTW, Qt has dropped linux-32 support starting with Qt-5.6 ...

I am now using a 32 bits VM in the mean time for my dev, If you build a 
32 bits version of Qt within the 32 bits VM, then when you install it on 
linux-64 system it won't work, qmake cannot be run (something to do with 
rpath and/or ld.so), i have wasted lot of time on this, and i still 
don't have a solution.

Anyway, this is not a qbs-specific nor a qtc-specific problem, it is a 
qmake and/or ubuntu issue.

Карелин, you might want to resend your message to the "interest" mailing 
list.


chris