Taking a stab at fixing failing build bots that use make. Unfortunately, the...

Taking a stab at fixing failing build bots that use make. Unfortunately, the build logs do not point to much useful information for tracking this down, such as:

http://lab.llvm.org:8011/builders/clang-x86_64-debian-fast/builds/31782/steps/compile/logs/stdio

llvm-svn: 249136