[all-commits] [llvm/llvm-project] 55eec2: build: workaround stale caches (NFC)

[Saleem Abdulrasool via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 55eec2ba96bd9c19ccb5d4d13cb8c88d4abcebc6
      https://github.com/llvm/llvm-project/commit/55eec2ba96bd9c19ccb5d4d13cb8c88d4abcebc6
  Author: Saleem Abdulrasool <compnerd at compnerd.org>
  Date:   2019-10-29 (Tue, 29 Oct 2019)

  Changed paths:
    M lldb/tools/debugserver/source/MacOSX/CMakeLists.txt

  Log Message:
  -----------
  build: workaround stale caches (NFC)

`LLVM_DEFAULT_TARGET_TRIPLE` is a cached variable, which means that it
may actually be unset.  Furthermore, in standalone builds, the variable
may be fully undefined.  Apply the regular expression over the empty
string in such a case.  This should improve the state of the green
dragon bot.