Follow-up Comment #1, sr #111333 (group autoconf):
> While calling with incompatible arguments is undefined
> behavior in C but compiles, in WASM this is fully unsupported and linking
> fails.
That's too bad, as it breaks autoconf-generated shell scripts. Perhaps you can
add a flag (or lobby for a flag) to wasm-ld so that it does not emit this
overenthusiastic diagnostic.
> Is it possible to run autoconf in a wasm32 cross-compile argument without
> invoking this wasm-ld-unsupported undefined behavior?
Not conveniently.
You can work around this particular problem by hotwiring the appropriate shell
variable, e.g., './configure ac_cv_func_strnlen=yes'. But you'll probably run
into more problems like that. Your best bet is to cajole wasm-ld into
succeeding on tests like that.
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