cmake - CMake project
meson - Meson project
visual - scripts to generate Visual Studio solutions from cmake script
VS2022 - Visual Studio 2022 solution - will soon be deprecated, prefer visual generators

Projects available within VS2022\lz4.sln

The Visual Studio solution file lz4.sln contains many projects that will be compiled to the build\VS2010\bin\$(Platform)_$(Configuration) directory. For example lz4 set to x64 and Release will be compiled to build\VS2010\bin\x64_Release\lz4.exe. The solution file contains the following projects:

lz4 : Command Line Utility, supporting gzip-like arguments
datagen : Synthetic and parametrable data generator, for tests
frametest : Test tool that checks lz4frame integrity on target platform
fullbench : Precisely measure speed for each lz4 inner functions
fuzzer : Test tool, to check lz4 integrity on target platform
liblz4 : A static LZ4 library compiled to liblz4_static.lib
liblz4-dll : A dynamic LZ4 library (DLL) compiled to liblz4.dll with the import library liblz4.lib
fullbench-dll : The fullbench program compiled with the import library; the executable requires LZ4 DLL

Using LZ4 DLL with Microsoft Visual C++ project

The header files lib\lz4.h, lib\lz4hc.h, lib\lz4frame.h and the import library build\VS2010\bin\$(Platform)_$(Configuration)\liblz4.lib are required to compile a project using Visual C++.

The path to header files should be added to Additional Include Directories that can be found in Project Properties of Visual Studio IDE in the C/C++ Property Pages on the General page.
The import library has to be added to Additional Dependencies that can be found in Project Properties in the Linker Property Pages on the Input page. If one will provide only the name liblz4.lib without a full path to the library then the directory has to be added to Linker\General\Additional Library Directories.

The compiled executable will require LZ4 DLL which is available at build\VS2010\bin\$(Platform)_$(Configuration)\liblz4.dll.