[Qbs] Linux 32 bits build on x86_64 host

[Christian Gagneraud]

On 10 September 2017 at 04:37, Christian Kandeler
<Christian.Kandeler at qt.io> wrote:
> I don't have a Creator checkout at hand, but the problem is probably that we fail to pass the target architecture to qbs, which then uses the compiler default. Workaround: Set qbs.architecture to "x86" in the qbs-specific part of the Kit settings.
> Can you please file a bug report?

Cool, I didn't see that Qbs can be tweaked in the "Kit" settings, it
now works as expected.

See https://bugreports.qt.io/browse/QTCREATORBUG-18884

Thank you and Ely.
Chris



> ________________________________________
> From: Qbs <qbs-bounces+christian.kandeler=qt.io at qt-project.org> on behalf of Christian Gagneraud <chgans at gmail.com>
> Sent: Saturday, September 9, 2017 2:07 AM
> To: qbs; qt-creator
> Subject: [Qbs] Linux 32 bits build on x86_64 host
>
> [cross-posted qbs + qt-creator]
>
>
> Hi there,
>
> I'm using a 64bits Linux host and I have installed the "official"
> Qt-5.5-linux-32.
>
> I have then setup QtCreator:
>
> Qt Version:
> Name: Qt 5.5.1 (gcc-32)
> ABI: x86-linux-generic-elf-32bit
> Source: /opt/Qt32/5.5/gcc
> mkspec: linux-g++-32
> qmake: /opt/Qt32/5.5/gcc/bin/qmake
> Version: 5.5.1
> QMAKE_SPEC linux-g++-32
> QMAKE_VERSION 3.0
> QMAKE_XSPEC linux-g++-32
>
> Kit:
> Qt Version: Qt 5.5.1 (gcc-32)
> C Compiler: GCC (C, x86 32 bit in /usr/bin)
> C++ Compiler: GCC (x86 32 bit in /usr/bin)
>
> My Qt version is really 32 bits:
> $ file /opt/Qt32/5.5/gcc/lib/libQt5Sql.so.5.5.1
> /opt/Qt32/5.5/gcc/lib/libQt5Sql.so.5.5.1: ELF 32-bit LSB shared
> object, Intel 80386, version 1 (SYSV), dynamically linked,
> BuildID[sha1]=055df3fbcd976602a1ce4f1fcfcaae4151345cfa, stripped
>
> My qbs project files are so far dead simple, I have static libraries
> and some apps all have very basic content, eg:
> import qbs
>
> StaticLibrary {
>     name: "Alarms"
>     Depends { name: "cpp" }
>     cpp.includePaths: [ ...]
>     cpp.libraryPaths: [ ... ]
>     cpp.defines: [ ...]
>     Depends { ... }
>     files: [ ...]
> }
>
> Absolutely nowhere I attempt to manipulate compiler flags in any way.
>
> But when I build the project, qbs generate "/usr/bin/g++ -m64"
> compiler commands.
>
> Is this a bug in Qbs or QtCreator, or a problem in my setup?
>
> Now if i create custom toolchains using /usr/bin/g++ and adding -m32
> to the "platform code gen flags" (Qtc detects correctly that is is a
> 32 bits ABI) and associate these toochains with my Qt Kit, qbs
> generate "/usr/bin/g++ -m64 -m32" compiler commands.
>
> Any help appreciated.
>
> Chris
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