Ian Romanick wrote: > On Mon, Jan 05, 2009 at 04:21:11PM -0700, Brian Paul wrote: >> Ian Romanick wrote: >>> Once upon a time, there was talk of converting some parts of Mesa to >>> C++. This was killed for a number of reasons, and these fell into >>> basically two categories: >>> >>> 1. C++ would make the drivers worse. >>> >>> 2. Linking with C++ libraries causes problems with applications. >>> >>> So far, a fair portion of my GLSL compiler work has been re-creating a >>> C++-like object heirarchy and management system. Frankly, the code >>> would be much better (for all definitions of better) if I could just >>> use C++. >>> >>> Has issue #2 been resolved? I recall that, for example, if ID's >>> Quake3 binary dynamically linked with a library that dynamically >>> linked with a different version of libstdc++, it would explode. Is >>> that still the case? If this is still a problem, will it affect LLVM >>> usage in Mesa? >> 2 is not an issue. libGLU uses C++ code. You just have to pass the >> -cplusplus flag to the mklib script. > > Right...but most apps don't use libGLU. :) I can't find it in the > mailing list archives, but my recollection is that when someone tried > linking libGL or a *_dri.so with libstdc++, it caused problems. > Specificially, the libstdc++ version used was different from the > version Quake3 used. This caused Quake3 to explode. > > That said, fglrx links with libstdc++, and it doesn't seem to pose any > problems there.
Maybe try putting some simple/meaningless C++ code in the i965 driver, link the driver with libstdc++ and see if anyone complains. I'd be OK with that in Mesa 7.3 (for which a release candidate is overdue). > Other than keithp (I know your opinion), does anyone have any strong > opinions for or against using C++ in the GLSL compiler? OK by me. -Brian ------------------------------------------------------------------------------ _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
