message: Actually add posix_cmake_vars
diff: @@ -294,6 +294,7 @@ llvm_all_cmake_vars = select({
  _dict_add(
  cmake_vars,
  llvm_target_cmake_vars("X86", "x86_64-apple-darwin"),
  + posix_cmake_vars,
  darwin_cmake_vars,
  ),
  ),
  @@ -301,6 +302,7 @@ llvm_all_cmake_vars = select({
  _dict_add(
  cmake_vars,
  llvm_target_cmake_vars("PowerPC", "powerpc64le-unknown-linux_gnu"),
  + posix_cmake_vars,
  linux_cmake_vars,
  ),
  ),
  @@ -315,6 +317,7 @@ llvm_all_cmake_vars = select({
  _dict_add(
  cmake_vars,
  llvm_target_cmake_vars("X86", "x86_64-unknown-linux_gnu"),
  + posix_cmake_vars,
  linux_cmake_vars,
  ),
  ),
  