MacOS X 10.14 has a soft limit of 256 open files by default, at least on
CircleCI. So don't keep object files open while writing the ar file to
reduce the number of open files at once.
Context: the musl libc has more than 256 object files in the .a file.
This resulted in the error "too many open files" on MacOS X 10.14 when
running in CircleCI.
This is really just a preparatory commit for musl support. The idea is
to store not just the archive file (.a) but also an include directory.
This is optional for picolibc but required for musl, so the main purpose
of this commit is the refactor needed for this change.
This adds support for stdio in picolibc and fixes wasm_exec.js so that
it can also support C puts. With this, C stdout works on all supported
platforms.
This is a loose collection of small fixes flagged by staticcheck:
- dead code
- regexp expressions not using backticks (`foobar` / "foobar")
- redundant types of slice and map initializers
- misc other fixes
Not all of these seem very useful to me, but in particular dead code is
nice to fix. I've fixed them all just so that if there are problems,
they aren't hidden in the noise of less useful issues.
Ayke van Laethem