Build failure on manual link source code.(whitout vcpkg)

[orangeagain]

Reproduce：
operating system：Ubuntu

Link DirectX-Headers and DirectXMath source code instead of vcpkg,
add below code to "UVAtlas/CMakeLists.txt:line123:

line124:set(directx-headers_DIR /Users/user/Desktop/GithubDownload/DirectX-Headers-1.4.9/build)
line125:set(directxmath_DIR /Users/user/Desktop/GithubDownload/DirectXMath-jan2021/build/cmake)

Encountered the error below：

$ make ..
INFO: Using VCPKG for DirectX-Headers and DirectXMath.
CMake Warning (dev) at CMakeLists.txt:124 (find_package):
  Ignoring EXACT since no version is requested.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at /home/user/GithubDownload/DirectX-Headers-1.4.9/build/directx-headers-config.cmake:27 (include):
  include could not find load file:

    /home/user/GithubDownload/DirectX-Headers-1.4.9/build/directx-headers-targets.cmake
Call Stack (most recent call first):
  CMakeLists.txt:124 (find_package)


CMake Warning (dev) at CMakeLists.txt:125 (find_package):
  Ignoring EXACT since no version is requested.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at /home/user/GithubDownload/DirectXMath-jan2021/build/cmake/directxmath-config.cmake:27 (include):
  include could not find load file:

    /home/user/GithubDownload/DirectXMath-jan2021/build/cmake/DirectXMath-targets.cmake
Call Stack (most recent call first):
  CMakeLists.txt:125 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/user/GithubDownload/UVAtlas-apr2021/Build/CMakeFiles/CMakeOutput.log".