zstd: Include build infra

src/dependencies/zstd-1.5.6/build/README.md

@@ -0,0 +1,56 @@
+Projects for various integrated development environments (IDE)
+==============================================================
+
+#### Included projects
+
+The following projects are included with the zstd distribution:
+- `cmake` - CMake project contributed by Artyom Dymchenko
+- `VS2005` - Visual Studio 2005 Project (this project has been moved to the contrib directory and will no longer be supported)
+- `VS2008` - Visual Studio 2008 project
+- `VS2010` - Visual Studio 2010 project (which also works well with Visual Studio 2012, 2013, 2015)
+- `VS_scripts` - command line scripts prepared for Visual Studio compilation without IDE
+
+
+#### How to compile zstd with Visual Studio
+
+1. Install Visual Studio e.g. VS 2015 Community Edition (it's free).
+2. Download the latest version of zstd from https://github.com/facebook/zstd/releases
+3. Decompress ZIP archive.
+4. Go to decompressed directory then to `projects` then `VS2010` and open `zstd.sln`
+5. Visual Studio will ask about converting VS2010 project to VS2015 and you should agree.
+6. Change `Debug` to `Release` and if you have 64-bit Windows change also `Win32` to `x64`.
+7. Press F7 on keyboard or select `BUILD` from the menu bar and choose `Build Solution`.
+8. If compilation will be fine a compiled executable will be in `projects\VS2010\bin\x64\Release\zstd.exe`
+
+
+#### Projects available within zstd.sln
+
+The Visual Studio solution file `visual\VS2010\zstd.sln` contains many projects that will be compiled to the
+`visual\VS2010\bin\$(Platform)_$(Configuration)` directory. For example `zstd` set to `x64` and
+`Release` will be compiled to `visual\VS2010\bin\x64_Release\zstd.exe`. The solution file contains the
+following projects:
+
+- `zstd` : Command Line Utility, supporting gzip-like arguments
+- `datagen` : Synthetic and parametrable data generator, for tests
+- `fullbench`  : Precisely measure speed for each zstd inner functions
+- `fuzzer` : Test tool, to check zstd integrity on target platform 
+- `libzstd` : A static ZSTD library compiled to `libzstd_static.lib`
+- `libzstd-dll` : A dynamic ZSTD library (DLL) compiled to `libzstd.dll` with the import library `libzstd.lib`
+- `fullbench-dll` : The fullbench program compiled with the import library; the executable requires ZSTD DLL
+
+
+#### Using ZSTD DLL with Microsoft Visual C++ project
+
+The header file `lib\zstd.h` and the import library
+`visual\VS2010\bin\$(Platform)_$(Configuration)\libzstd.lib` are required to compile
+a project using Visual C++.
+
+1. 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.
+2. 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 `libzstd.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 ZSTD DLL which is available at
+`visual\VS2010\bin\$(Platform)_$(Configuration)\libzstd.dll`.