Do you know which package is needed to add the missing header files? This is the gcc from netlabs-rel (9.2.0-4.oc00)
Thank you!
libc-devel has most of the headers, libcx-devel also has a few.
There really should be a meta package, easy to forget things like the linker (watcom-wlink-hll)
Edit: You should use ash rather then bash as well. The bash port is incomplete.