Package: wasi-libc
Version: 0.0~git20210922.ad51334-1
Severity: normal
Thank you for maintaining wasi-libc!
I am trying to use Debian's clang + wasi-libc to compile a C program
into a WASM WASI binary. I am struggling to understand how to exactly
use wasi-libc. Most instructions on the web assume one is downloading
the WASI SDK, and operating based on its sysroot structure.
So far, I have succeeded by creating the following symlink structure:
root@7c3f1d075193:~# find /opt/wasi-sysroot/ -ls
23595890 4 drwxr-xr-x 3 root root 4096 Jul 7 21:09 /opt/wasi-sysroot/
23595893 4 drwxr-xr-x 2 root root 4096 Jul 7 21:09 /opt/wasi-sysroot/lib
23595894 0 lrwxrwxrwx 1 root root 20 Jul 7 21:09
/opt/wasi-sysroot/lib/wasm32-wasi -> /usr/lib/wasm32-wasi
23595892 0 lrwxrwxrwx 1 root root 24 Jul 7 21:09
/opt/wasi-sysroot/include -> /usr/include/wasm32-wasi
23595891 0 lrwxrwxrwx 1 root root 22 Jul 7 21:09
/opt/wasi-sysroot/share -> /usr/share/wasm32-wasi
...and then invoking clang with --sysroot=/opt/wasi-sysroot.
It'd be great if the package shipped with such a symlink structure,
and/or came with instructions on how one can use this package (either
with this structure, or, if possible, without).
For what it's worth, wasi-libc is only one part of the puzzle. I also needed
to also fetch compiler-rt e.g. from wasi-sdk (cf. #1010932). My full
command-line is:
clang --target=wasm32-wasi \
--rtlib=compiler-rt \
--sysroot=/opt/wasi-sysroot \
helloworld.c -o helloworld.wasm
Thanks!
Faidon
