git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106638
91177308-0d34-0410-b5e6-
96231b3b80d8
config.environment['HOME'] = os.environ['HOME']
# Propogate LLVM_SRC_ROOT into the environment.
-config.environment['LLVM_SRC_ROOT'] = config.llvm_src_root
+config.environment['LLVM_SRC_ROOT'] = getattr(config, 'llvm_src_root', '')
# Propogate PYTHON_EXEUTABLE into the environment
config.environment['PYTHON_EXECUTABLE'] = getattr(config, 'python_executable',