On 21.06.2011 20:02, David Boddie wrote:
On Mon Jun 20 23:46:27 BST 2011, Jarosław Białas wrote:
I wanted to create code fragment that will pass an object containg image
or pointer to this object from Python to C++ function.
I tried to create function:
void loadImage(QImage* image);
Then I created sip file, and after compiling and linking everything
looks fine until I tried to import shared library in python:
ImportError: ./test.so: undefined symbol: _ZTI6QImage
It looks like QtGui wasn't linked in when your shared library was created.
How was the linker run? What command line options and arguments were passed
to it?
David
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You were absolutely right. QtGui wasn't linked. But SIP still throw an
error - sip: Q_PID is undefined. So i add SIP platform tag -t WS_X11.
It wasn't working too - sip: QFileIconProvider is undefined, but after
extra modification:
$ /usr/bin/sip -c . -I/usr/share/sip -t WS_X11 -t Qt_4_7_2 -b hello.sbf
hello.sip
$ g++ -c -pipe -fPIC -O2 -Wall -W -DNDEBUG -I. -I/usr/include/python2.7
-I/usr/include/QtGui -I/usr/include/QtCore -o siphellocmodule.o
siphellocmodule.cpp
$ g++ -c -pipe -fPIC -O2 -Wall -W -DNDEBUG -I. -I/usr/include/python2.7
-I/usr/include/QtGui -I/usr/include/QtCore -o siphellohello.o
siphellohello.cpp
$ g++ -Wl,--hash-style=gnu -Wl,--as-needed -shared
-Wl,--version-script=hello.exp -o hello.so siphellocmodule.o
siphellohello.o
I've got: undefined symbol: _ZN5hello9loadImageEP6QImage.I found out
that I've only declared loadImage. So after all it works fine. Thank you
for help.
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