Hi Martin The answer has to be in doing a cross compile, by creating two out of source build directories, one for each platform. You set up env vars before you call cmake to enable the different compiles. Under Linux I tried successfully to do this, the following thread on osg-build will give you a bit of background.
http://groups.google.com/group/osg-build/browse_thread/thread/76569d0b42c3161f?hl=en Setting the CXXFLAGS, CFLAGS, and LDFLAGS is required before running cmake. The next question is what should these values be for N32 and N64... The process will be something like (from the directory above where you have OpenSceneGaph): mkdir buildOSG_64 cd buildOSG_64 setenv CXXFLAGS=... setenv CFLAGS=... setenv LDFLAGS=... cmake ../OpenSceneGraph make cd .. mkdir buildOSG_32 cd buildOSG_32 setenv CXXFLAGS=... setenv CFLAGS=... setenv LDFLAGS=... cmake ../OpenSceneGraph make cd .. Robert.
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