We don't support MSVC at the moment and I don't have any experiences with it. You probably will have to build LZO and QCA on your own with MSVC first so it can be detected properly. What compiler is used internally? MSVC or some kind of mingw gcc?

MSVC

1> C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\COMMUNITY\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\CMake\bin\cmake.exe -G "Ninja" -DCMAKE_INSTALL_PREFIX:PATH="C:\Users\aadil\CMakeBuilds\252530f5-a734-023c-b907-fbe2667c3a28\install\x86-Debug" -DCMAKE_CXX_COMPILER="C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.14.26428/bin/HostX86/x86/cl.exe" -DCMAKE_C_COMPILER="C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.14.26428/bin/HostX86/x86/cl.exe" -DCMAKE_BUILD_TYPE="Debug" -DCMAKE_MAKE_PROGRAM="C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2017\COMMUNITY\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\Ninja\ninja.exe" "C:\Users\aadil\Source\Repos\veyon" returned with exit code: 1
CMake Error at cmake/modules/FindLZO.cmake:24 (message):

The Compiler

-DCMAKE_CXX_COMPILER="C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.14.26428/bin/HostX86/x86/cl.exe" -

Is the library liblzo2 library available in your system? You can also try to pass LZO_INCLUDE_DIR and LZO_LIBRARIES to cmake e.g. cmake ... -DLZO_INCLUDE_DIR=C:\lzo

Closing due to inactivity.