Hi Erik, You're absolutely right. And what about three levels of PCHs? 1. Disable PCH 2. Enable PCH - Profile "OSG dev" (only standard includes) 3. Enable PCH - Profile "OSG user" (standard includes and base OSG ones, such as Node) It would require a few lines of CMake scripts.
Cheers, Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ ----- "Erik den Dekker" <[email protected]> a écrit : > IMHO precompiled headers are only useful if used on headers that do > not or at most rarely change. That leaves little options for which > headers to include: > > Including the standard C/C++ headers in a precompiled header is > useful. These should not change anyways. > > The question if other headers change _rarely_ boils down to your usage > pattern. If you are a OSG library developer you would probably not > like it if you have to compile all of the osg libraries if you change > just any one header in the core osg library. This is one of the > consequences though if one takes the precompiled headers a step to > far, because all .cpp files will depend on the precompiled header, > which in its turn depends on the headers it includes. On the other > hand, people who just compile the whole of OSG from source once in a > while will probably experience a significant speedup if using > precompiled headers. This is one reason it is very important to make > precompiled headers optional using cmake, probably defaulting to off. > > Erik den Dekker > > On 19-01-2010, at 06:37, Ulrich Hertlein wrote: > > > On 19/01/10 15:21 , Martin Beckett wrote: > >> This causes an issue with ShadowVolumeOccluder which defines a > std::pair named Point, > >> but the precompiled header already includes an osg::Point. > ShadowVolumeOccluder has a > >> "using namespace osg" which leads to a clash. > >> ... > >> Would it be a good idea to avoid "using namespace osg" in the > headers? > > > > Absolutely! > > > > In which OSG include file do you find this? My version of > ShadowVolumeOccluder hasn't it > > and a grep on svn trunk doesn't show anything too... > > > > /ulrich > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
