[Pythonmac-SIG] py2app cannot move to target thread error

Scott Frankel leknarf at pacbell.net
Wed Aug 19 19:41:06 CEST 2009


Hello,

I'm stuck somewhere between macports and py2app.  I'm hopeful that  
someone here may be able to offer some advice on how to rectify my  
build environment.

Exporting DYLD_PRINT_LIBRARIES=1 and running a test app built with  
QtSql support and another one without it, I'm pretty sure that the  
following line is the clue:

	dyld: loaded: /opt/local/libexec/qt4-mac/plugins/sqldrivers/ 
libqsqlpsql.bundle

My question is, how do I access/get/compile the PSQL support my app  
requires?  My environment's qt4-mac, python26, and py2app are from  
macports.  The qt4-mac has the psql dependency:

	py26-py2app-devel @0.4.2_1 (active)
	py26-pyqt4 @4.5.4_0 (active)
	qt4-mac @4.5.1_0+psql (active)
	
Thanks in advance!
Scott





On Aug 10, 2009, at 8:51 AM, Scott Frankel wrote:

>
> Hello,
>
> I'm troubleshooting a PyQt-PostgreSQL py2app error:  "Cannot move to  
> target thread".  Note that a test app builds and runs happily.  The  
> error only comes up when I add PyQt4.QtSql' to py2app's option  
> includes.  eg:
>
> This works:
> 	OPTIONS = {'argv_emulation': True, 'includes': ['sip', 'PyQt4._qt']}
>
> This doesn't:
> 	OPTIONS = {'argv_emulation': True, 'includes': ['sip', 'PyQt4._qt',  
> 'PyQt4.QtSql']}
>
> Researching the error, I've set DYLD_PRINT_LIBRARIES=1 in my shell  
> and am looking for duplicate instances of Qt libraries.  I'm not  
> seeing anything obvious.  But I also don't know exactly what to look  
> for.
>
> For example, should I be concerned with dyld output running the app  
> or building it?
>
> I created my build environment using macports.  It looks like the  
> correct libs are being accessed.  The last of the dyld output looks  
> like this:
>
> dyld: loaded: /opt/local/libexec/qt4-mac/plugins/sqldrivers/ 
> libqsqlpsql.bundle
> dyld: loaded: /opt/local/lib/postgresql83/libpq.5.dylib
> dyld: loaded: /opt/local/libexec/qt4-mac/lib/QtSql.framework/ 
> Versions/4/QtSql
> dyld: loaded: /opt/local/libexec/qt4-mac/lib/QtCore.framework/ 
> Versions/4/QtCore
> dyld: loaded: /opt/local/lib/libz.1.dylib
> dyld: loaded: /opt/local/lib/libssl.0.9.8.dylib
> dyld: loaded: /opt/local/lib/libcrypto.0.9.8.dylib
> QObject::moveToThread: Current thread (0x1d17d0) is not the object's  
> thread (0x1a7820).
> Cannot move to target thread (0x1a7820)
>
>
> Suggestions?
>
> Thanks in advance!
> Scott
>
>
>
>
>
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