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POHow to link as .so instead of .dylib on OSX 10.6 using qmake
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  1. POHow to link as .so instead of .dylib on OSX 10.6 using qmake
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    copied!<p>I am trying to use SWIG to wrap some C++ code for the use with Python. As described <a href="https://stackoverflow.com/questions/2488016/how-to-make-python-load-dylib-on-osx" title="here">here</a> it seems to be necessary to link my C++ code against an <code>.so</code> file, not a <code>.dylib</code> file. The thread suggests to use <code>libtool</code> in combination with the <code>-module</code> flag to link, but I am using qmake and need more precise instructions on how I do that. </p> <p>My .pro file (for qmake) looks like this:</p> <pre><code>TEMPLATE = lib TARGET = CONFIG += qt debug console plugin no_plugin_name_prefix QT += opengl DEPENDPATH += . libgm src INCLUDEPATH += . libgm src /usr/include/python2.6/ LIBS += -L/usr/lib -lpython MOC_DIR = .moc OBJECTS_DIR = .tmp DESTDIR = bin TARGET = _mylibname DEFINES += COMPILE_DL=1 HEADERS += &lt;my_headers&gt; \ src/swig_wrap.h SOURCES += &lt;my_sources&gt; src/swig_wrap.cxx </code></pre> <p>I am invoking first <code>swig</code>, then <code>qmake</code>, then <code>make</code> using Eclipse builders:</p> <pre><code>cd src/ swig -c++ -python swig.i cd .. qmake -spec macx-g++ make all </code></pre> <p>Compile and Link works fine, but leaves me with <code>bin/_mylibname.dylib</code>, and when I run my python application, the statement import <code>_mylibname</code> fails.</p> <p>Does anyone know how I can get qmake to build a <code>*.so</code> instead of a <code>*.dylib</code>, possibly using <code>libtool</code> (or any other way for all I care)? My platform:</p> <ul> <li>Mac OS X Snow Leopard (10.6)</li> <li>Python 2.6</li> <li>SWIG 1.3.31</li> <li>qmake 2.01a with Qt 4.6.2</li> <li>g++ i686-apple-darwin10-g++-4.2.1</li> </ul> <p>I am not very knowledgable with linking issues, so please be gentle :-)</p> <p>Ole</p>
 

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