[libFuzzer] Changing thread_local to __thread in libFuzzer

Old Apple compilers do not support thread_local keyword. This patch adds -Dthread_local=__thread when the compiler doesn't support thread_local.

Differential Revision: https://reviews.llvm.org/D32312



git-svn-id: svn://svn.chromium.org/llvm-project/llvm/trunk/lib/Fuzzer@301007 0b72dbe1-c17f-4bc7-b9db-2b4152be0356
1 file changed