[compiler-rt] r235954 - Allow UBSan+MSan and UBSan+TSan combinations (Clang part).

[Ahmed Bougacha]

Hi Alexey,

I've been getting CMake warnings (see below) on Darwin following this
commit, does it ring a bell?

Thanks!
-Ahmed


CMake Warning (dev) at cmake/modules/AddLLVM.cmake:791 (add_dependencies):
  Policy CMP0046 is not set: Error on non-existent dependency in
  add_dependencies.  Run "cmake --help-policy CMP0046" for policy details.
  Use the cmake_policy command to set the policy and suppress this warning.

  The dependency target "msan" of target "check-all" does not exist.
Call Stack (most recent call first):
  CMakeLists.txt:626 (add_lit_target)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/modules/AddLLVM.cmake:791 (add_dependencies):
  Policy CMP0046 is not set: Error on non-existent dependency in
  add_dependencies.  Run "cmake --help-policy CMP0046" for policy details.
  Use the cmake_policy command to set the policy and suppress this warning.

  The dependency target "tsan" of target "check-all" does not exist.
Call Stack (most recent call first):
  CMakeLists.txt:626 (add_lit_target)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/modules/AddLLVM.cmake:791 (add_dependencies):
  Policy CMP0046 is not set: Error on non-existent dependency in
  add_dependencies.  Run "cmake --help-policy CMP0046" for policy details.
  Use the cmake_policy command to set the policy and suppress this warning.

  The dependency target "msan" of target "check-ubsan" does not exist.
Call Stack (most recent call first):
  cmake/modules/AddLLVM.cmake:812 (add_lit_target)
  projects/compiler-rt/test/ubsan/CMakeLists.txt:39 (add_lit_testsuite)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at cmake/modules/AddLLVM.cmake:791 (add_dependencies):
  Policy CMP0046 is not set: Error on non-existent dependency in
  add_dependencies.  Run "cmake --help-policy CMP0046" for policy details.
  Use the cmake_policy command to set the policy and suppress this warning.

  The dependency target "tsan" of target "check-ubsan" does not exist.
Call Stack (most recent call first):
  cmake/modules/AddLLVM.cmake:812 (add_lit_target)
  projects/compiler-rt/test/ubsan/CMakeLists.txt:39 (add_lit_testsuite)
This warning is for project developers.  Use -Wno-dev to suppress it.