hello_headless example: clang: error: unable to execute command: Executable "wasm-ld" doesn't exist! #1

clang --target=wasm32 -O2 -nostdlib -Iinclude -o examples/hello_headless.wasm examples/hello_headless.c
clang: error: unable to execute command: Executable "wasm-ld" doesn't exist!
clang: error: linker command failed with exit code 1 (use -v to see invocation)

clang --target=wasm32 -O2 -nostdlib -Iinclude -fuse-ld=/media/user/x/wasi-sdk/bin/wasm-ld -o examples/hello_headless.wasm examples/hello_headless.c
wasm-ld: error: entry symbol not defined (pass --no-entry to suppress): _start
clang: error: linker command failed with exit code 1 (use -v to see invocation)

clang --target=wasm32 -O2 -nostdlib -Iinclude -fuse-ld=/media/user/1ba75ad8-75c6-46d3-a54c-05dc0ceb12b1/wasi-sdk/bin/wasm-ld -Wl,--no-entry -o examples/hello_headless.wasm examples/hello_headless.c

bun examples/hello_headless.wasm
1035 |             };
1036 |           case "wasi_snapshot_preview1":
1037 |             return {
1038 |               wasi_snapshot_preview1: this.wasiImport
1039 |             };
1040 |             throw Error(`No WASI namespace found. Only wasi_unstable and wasi_snapshot_preview1 are supported.
                                                              ^
error: No WASI namespace found. Only wasi_unstable and wasi_snapshot_preview1 are supported.

List of imports:

wapi:io_get (function)
wapi_env:args_count (function)
wapi_filesystem:write (function)
wapi_env:args_get (function)
wapi_clock:time_get (function)
wapi_env:random_get (function)
wapi_filesystem:preopen_count (function)
wapi_filesystem:preopen_path (function)
wapi_filesystem:preopen_handle (function)
wapi_filesystem:open (function)
wapi_filesystem:close (function)

      at getImports (node:wasi:1040:24)
      at /media/user/x/WAPI/examples/hello_headless.wasm:47:56

Bun v1.3.12-canary.1+133681382 (Linux x64 baseline)

wasmtime examples/hello_headless.wasm
Error: failed to run main module `examples/hello_headless.wasm`

Caused by:
    0: failed to instantiate "examples/hello_headless.wasm"
    1: unknown import: `wapi::io_get` has not been defined

 clang --target=wasm32 -O2 -nostdlib -Iinclude -fuse-ld=/media/user/x/wasi-sdk/bin/wasm-ld -Wl,--no-entry -Wl,--export-all -Wl,--allow-undefined -o examples/hello_headless.wasm examples/hello_headless.c