Visual Studio, GNU C++ and Emscripten compilable chess engine.
Open the project cengine.vcxproj in Visual Studio and in the Build menu click on Build Solution.
vcvarsall x64
msbuild /property:Configuration=Release
Note that vcvarsall is Visual Studio's script that sets up a build environment. It has to be in your path. The path to it should look something like C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build.
emcc src/attack.cpp src/bitboard.cpp src/cengine.cpp src/matein4.cpp src/piece.cpp src/search.cpp src/square.cpp src/state.cpp src/uci.cpp -s WASM=1 -s TOTAL_MEMORY=200MB -s ALLOW_MEMORY_GROWTH=1 -s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=2 -D WASM -o wasmbuild/cengine.html -s EXPORTED_FUNCTIONS="['_main','_execute_uci_command']" -s EXTRA_EXPORTED_RUNTIME_METHODS="['cwrap']"
It is ok to get USE_PTHREADS + ALLOW_MEMORY_GROWTH may run non-wasm code slowly warning.
Run the build script:
s\bo
Study the s\bo.bat build script, and create an equivalent of it on your system and run that script. It essentially copies the necessary files to the site folder, and concats wasmbuild\cengine.js and srcweb\preamble.js as cengine.js in the site folder.
You can drag and drop the site folder to Netlify and it will work as a site.
To use it locally, assuming you have installed http-server with npm install http-server -g ( but any other simple server that serves up a folder would do ):
cd site
http-server
Then visit localhost:8080.
g++ src/square.cpp src/attack.cpp src/bitboard.cpp src/cengine.cpp src/matein4.cpp src/piece.cpp src/search.cpp src/square.cpp src/state.cpp src/uci.cpp -D WASM -D GCCBUILD -O3 -pthread
Note that WASM is turned on in the build, because in the original WASM build the WASM compiler flag in many places only means g++ style compilation, as emcc is similar in behavior to g++. The GCCBUILD flag compensates for the small difference compared to the real WASM build.