tree 1b318d82380b08fb3f602597b61d797a2f5656bd
parent 9fc93b80413d63aeb08b5a17602d111ed3899faf
author José Fonseca <jfonseca@vmware.com> 1270863699 +0100
committer José Fonseca <jfonseca@vmware.com> 1270973854 +0900

scons: Make LLVM a black-white dependency.

Now that draw depends on llvm it is very difficult to correctly handle
broken llvm installations. Either the user requests LLVM and it needs to
supply a working installation. Or it doesn't, and it gets no LLVM
accelerate pipe drivers.