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Standard C library implementation for WebAssembly System Interface
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README.md

wasi-libc

Standard C library implementation for WebAssembly System Interface.

Quick How-to

$ clang --target=wasm32-wasi --sysroot=/usr/wasm32-wasi -nodefaultlibs -lc -o hello hello.c

Important flags:

  • --target=wasm32-wasi specifies the compilation architecture (WASM System Interface).
  • --sysroot=/usr/wasm32-wasi tells clang where the library files are.
  • -nodefaultlibs disables linking of libc and libcompiler-rt (the latter is not available).
  • -lc re-enables linking of libc.