I have been developing an OSG application on Linux and recently began making it cross-platform with OS X 10.5 (Leopard).
Either I'm not doing something correctly for an OS X compile or there is a bug in the OpenSceneGraph-2.2.0.dmg found at http://www.openscenegraph.org/files/OpenSceneGraph-2.2.0/OpenSceneGraph-2.2.0.dmg. I'm using CMake for cross platform builds, and whether I generate a Makefile or an Xcode build environment, the compile fails on OS X with this message: ========== Undefined symbols: "osg::StateSet::setMode(unsigned int, unsigned int)", referenced from: _main in main.o _main in main.o "osg::Image::readPixels(int, int, int, int, unsigned int, unsigned int)", referenced from: screenshot(osg::Camera const&) in main.o ld: symbol(s) not found collect2: ld returned 1 exit status ========== The offending snippets of code are: ========== osg::ref_ptr<osg::Group> root = new osg::Group(); osg::ref_ptr<osg::StateSet> state = root->getOrCreateStateSet(); state->setMode(GL_LIGHTING, osg::StateAttribute::ON); state->setMode(GL_LIGHT0, osg::StateAttribute::ON); ========== osg::ref_ptr<osg::Image> image = new osg::Image(); image->readPixels(static_cast<int>(viewport->x()), static_cast<int>(viewport->y()), static_cast<int>(viewport->width()), static_cast<int>(viewport->height()), GL_RGBA, GL_UNSIGNED_BYTE); ========== This same code compiles and links without any problem on Linux. On OS X, options passed to the compiler include: -F/Library/Frameworks \ -framework osg -framework osgDB -framework osgGA \ -framework osgParticle -framework osgUtil \ -framework osgText -framework osgViewer and I have followed the instructions for installing the OSG frameworks into /Library/Frameworks. If I comment out the code that triggers the linking errors, I can get the code to compile, link, and run. "otool -L" shows for following for the resulting executable: ========== /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.0.0) @executable_path/../Frameworks/osg.framework/Versions/A/osg (compatibility version 0.0.0, current version 1.0.0) @executable_path/../Frameworks/osgDB.framework/Versions/A/osgDB (compatibility version 0.0.0, current version 1.0.0) @executable_path/../Frameworks/osgGA.framework/Versions/A/osgGA (compatibility version 0.0.0, current version 1.0.0) @executable_path/../Frameworks/osgParticle.framework/Versions/A/osgParticle (compatibility version 0.0.0, current version 1.0.0) @executable_path/../Frameworks/osgUtil.framework/Versions/A/osgUtil (compatibility version 0.0.0, current version 1.0.0) @executable_path/../Frameworks/osgText.framework/Versions/A/osgText (compatibility version 0.0.0, current version 1.0.0) @executable_path/../Frameworks/osgViewer.framework/Versions/A/osgViewer (compatibility version 0.0.0, current version 1.0.0) /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.4.0) /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0) ========== So executable is linked against the "osg" framework, and the application runs successfully (with the features that I commented out to get it to build disabled of course). Any ideas? Am I doing something wrong? Or did osg::StateSet::setMode() and osg::Image::readPixels() not make it into the OS X .dmg file (or not in a form that can be linked against)? - Michael Berg _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
