Re: [ptxdist] ptxdist go abort when trying to link qt against libstdc++

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Fri, Apr 11, 2014 at 08:23:45AM +0200, Alexander Aring wrote:
> On Thu, Apr 10, 2014 at 03:18:19PM +0200, Marc Michalewicz, Railtec Systems GmbH wrote:
> > Hello,
> > 
> > i try to build a ptxdist systeme - the first time.
> > My Cross-Toolchain - target i686, host x86_64 - was built successfully in
> > the end
> > but now I am really stuck at this point during the "ptxdist go" - stage:
> > 
> > <snip>
> > g++ -o "/home/marc/svn/ptxdist/ptxdist_CPU/platform/build-host/qt-everywhere-opensource-src-4.7.3-build/bin/qmake"
> > project.o property.o main.o makefile.o unixmake2.o unixmake.o mingw_make.o
> > option.o winmakefile.o projectgenerator.o meta.o makefiledeps.o
> > metamakefile.o xmloutput.o pbuilder_pbx.o borland_bmake.o msvc_vcproj.o
> > msvc_vcxproj.o msvc_nmake.o msvc_objectmodel.o msbuild_objectmodel.o
> > symmake.o initprojectdeploy_symbian.o symmake_abld.o symmake_sbsv2.o
> > symbiancommon.o registry.o epocroot.o qtextcodec.o qutfcodec.o qstring.o
> > qtextstream.o qiodevice.o qmalloc.o qglobal.o qbytearray.o
> > qbytearraymatcher.o qdatastream.o qbuffer.o qlist.o qfile.o
> > qfsfileengine_unix.o qfsfileengine_iterator_unix.o qfsfileengine.o
> > qfsfileengine_iterator.o qregexp.o qvector.o qbitarray.o qdir.o
> > qdiriterator.o quuid.o qhash.o qfileinfo.o qdatetime.o qstringlist.o
> > qabstractfileengine.o qtemporaryfile.o qmap.o qmetatype.o qsettings.o
> > qlibraryinfo.o qvariant.o qvsnprintf.o qlocale.o qlinkedlist.o qurl.o
> > qnumeric.o qcryptographichash.o qxmlstream.o qxmlutils.o  -m32
> > /usr/bin/ld: skipping incompatible
> > /usr/lib/gcc/x86_64-linux-gnu/4.7/libstdc++.so when searching for -lstdc++
> > /usr/bin/ld: skipping incompatible
> > /usr/lib/gcc/x86_64-linux-gnu/4.7/libstdc++.a when searching for -lstdc++
> > <snip>
> > 
> > As I guess, it seems the hostcompiler is used to link some qt-stuff an in
> > the end it misses some important lib. Does anyone have an idea about the
> > problem ? It seems to be related to the host-installation: I use an ubuntu
> > 12.10 system, fully uptodate; ia32 package is installed.
> > 
> 
> Look at the g++ call the "-m32" argument:
> 
> Ouoting g++ manual:
> 
> "-m32
> -m64
> -mx32
>    Generate code for a 32-bit or 64-bit environment.  The -m32 option
>    sets "int", "long", and pointer types to 32 bits, and generates
>    code that runs on any i386 system.
> 
>    The -m64 option sets "int" to 32 bits and "long" and pointer types
>    to 64 bits, and generates code for the x86-64 architecture.  For
>    Darwin only the -m64 option also turns off the -fno-pic and
>    -mdynamic-no-pic options.
> 
>    The -mx32 option sets "int", "long", and pointer types to 32 bits,
>    and generates code for the x86-64 architecture."
> 
> So you using a x86_64 system and try to build qmake with a -m32 argument
> linked to a libstdc++ which are build for 64 bit system. This can't be
> work. Check why there is a -m32.

My guess is, that the qt configure script is at fault here. Qt 4.7.3 is
really old. This is probably fixed in newer version.

Michael

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