wasi-libc/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.