native-build compilation issue

[crazyhtm]

If you could find a time and let me know which "clang" and "llc" version do you actually use for #9-native-build?
I am sorry for disturbing you, but actually I am new to WASM and there is so few info on the web about LLVM toolchain for it.

I was trying with :

• clang version 7.0.0
• LLVM version 7.0.0
  build with -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly

and

options from your Makefile

here it is what I got:

clang and llc - passed

and then

s2wasm func.s > func.wat

[[function element:]]:
get_local $push2=, 0
i32.const $push0=, 3
i32.shl $push1=

Aborted (core dumped)

wasm-opt (with your options)

reading...
reading text from func.s
Loading 'func.s'...
[parse exception: expected list (at 1:1)]
Fatal: error in parsing input

Any guess?