TARGET_FILE:llvm-strip : build error

[xingfeT]

CMake Error at /usr/share/cmake/Modules/ExternalProject.cmake:2373:EVAL:2 (add_custom_command):
Error evaluating generator expression:

$<TARGET_FILE:llvm-ranlib>

Target "llvm-ranlib" is not an executable or library.
Call Stack (most recent call first):
/usr/share/cmake/Modules/ExternalProject.cmake:2373 (cmake_language)
cmake/modules/LLVMExternalProjectUtils.cmake:239 (ExternalProject_Add_Step)
runtimes/CMakeLists.txt:216 (llvm_ExternalProject_Add)
runtimes/CMakeLists.txt:275 (builtin_default_target)

CMake Error at /usr/share/cmake/Modules/ExternalProject.cmake:2373:EVAL:2 (add_custom_command):
Error evaluating generator expression:

$<TARGET_FILE:llvm-strip>

Target "llvm-strip" is not an executable or library.
Call Stack (most recent call first):
/usr/share/cmake/Modules/ExternalProject.cmake:2373 (cmake_language)
cmake/modules/LLVMExternalProjectUtils.cmake:239 (ExternalProject_Add_Step)
runtimes/CMakeLists.txt:216 (llvm_ExternalProject_Add)
runtimes/CMakeLists.txt:275 (builtin_default_target)

CMake Warning (dev) at cmake/modules/TableGen.cmake:72 (add_custom_command):
Policy CMP0116 is not set: Ninja generators transform DEPFILEs from
add_custom_command(). Run "cmake --help-policy CMP0116" for policy
details. Use the cmake_policy command to set the policy and suppress this
warning.
Call Stack (most recent call first):
unittests/Option/CMakeLists.txt:8 (tablegen)
This warning is for project developers. Use -Wno-dev to suppress it.

-- Generating done
CMake Generate step failed. Build files cannot be regenerated correctly.

[jbush001]

duplicate of #204