wasmception
Minimal toolset for building wasm files
Export functions
Use __attribute__ ((visibility ("default"))) to make methods visible
Compile C file
$(WASMCEPTION)/dist/bin/clang --target=wasm32-unknown-unknown-wasm --sysroot=$(WASMCEPTION)/sysroot/ hi.c -o hi.wasm -nostartfiles -Wl,--no-entry
Compile C++ file
$(WASMCEPTION)/dist/bin/clang++ --target=wasm32-unknown-unknown-wasm --sysroot=$(WASMCEPTION)/sysroot/ hi.cpp -o hi.wasm -nostartfiles -Wl,--no-entry
Required main and _start functions
The -nostartfiles will not require you to define the main function, but will be looking for the _start function:
use -Wl,--no-entry clang (linker) option to avoid specified entry point. As alternative, you can add void _start() {}
(or extern "C" void _start() { } in C++) to make linker happy due to -nostartfiles.