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- added notes on how to build with emscripten

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Ilya Shurumov 2021-04-11 02:14:06 +06:00
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# Emscripten info on how to build
1. install VSExtForEmscripten for VS 2019
2. with chocolatey - `choco install emsdk`
#### Where chocolatey places SDK on windows:
`\AppData\Local\emsdk\upstream\emscripten`
## Building
- switch optimization to O3 (Full optimization)
- remove `/SAFESEH:NO` everywhere (if using VSExtForEmscripten)
- remove Windows defines if copied from Win32 configuration
- disable warnings:
c++11-narrowing;constant-conversion;writable-strings;unused-value;switch;shift-op-parentheses;parentheses;format
add Clang parameters (Psy-X, REDRIVER2):
`-s USE_SDL=2 -s FULL_ES2=1 -s USE_WEBGL2=1 -s ASYNCIFY=1 -s ALLOW_MEMORY_GROWTH=1`
add linker parameters (REDRIVER2):
`-s TOTAL_MEMORY=33554432 -s USE_SDL=2 -s FULL_ES2=1 -s USE_WEBGL2=1 -s ASYNCIFY=1 -s ALLOW_MEMORY_GROWTH=1 --preload-file ../data@/`