Does cross compiling work?

Hal Murray hmurray at
Mon Jan 20 19:53:44 UTC 2020

If so, can somebody send me an example script.

Context is that I'm working on getting ntpsec to run on RTEMS.  (Mostly 

We have to build and run keyword-gen on the local system so it needs to be 
built with the non-cross tools.  It's the first 5 steps under the "building 
host" header.

wscript contains:

     if ctx.options.cross_compiler:
        if ctx.env["CROSS-CFLAGS"]:
            # Lexically split each part of the CFLAGS, then chain the lists
            iter = [shlex.split(x) for x in opt_map["CROSS-CFLAGS"]]
            ctx.env.CFLAGS = list(itertools.chain.from_iterable(iter))

I'd expect that we would need 2 copies of CFLAGS, one for the local build and 
another for the cross-build.  Am I missing something?

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