build issues with gawk on OSX.

[hydra]

gawk isn't in /usr/bin/gawk on OSX by default, brew install gawk installs it to usr/local/bin/gawk so the scripts don't work.

[TG9541]

An interesting problem.

I tried using / the following approaches, without success:

• use #!/usr/bin/env gawk -f (env doesn't like -f), and
• a polyglott approach (the script hangs, or exec doesn't like -a)

Do you have any suggestions?

[TG9541]

The problem is even more interesting: https://groups.google.com/forum/#!topic/comp.unix.shell/msq-6mTHJRo

[hydra]

didnt realise the -f option wouldnt work on linux though.

perhaps look at some other projects on github and see what they do?

[TG9541]

Awk is hardly the most popular scripting language these days ;-)
One option might be patching the scripts when they run on OSX. It wouldn't be a nuisance if done automatically.

[TG9541]

@hydra I tried some more variants of the "polyglot" method, but I had no success passing in command line parameters and gawk options at the same time. Some remaining option might be passing options in a file, through STDIN, or with environment variables.

[David-Gould]

Can you use awk instead or do you depend on gawk extensions?

[TG9541]

I think I didn't use any non-POSIX gawk features.

By the way, there is an obvious way to approaching the OSX problem.

In the makefile's main.ihx target the following sidesteps the shell script problem:

	awk -f tools/genalias.awk -v target="out/$(BOARD)/target/" out/$(BOARD)/forth.rst
	awk -f tools/genconst.awk -v target="out/$(BOARD)/target/" out/$(BOARD)/forth.rst

@hydra FYI
@David-Gould I'll change the script processor to awk