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Re: suggestion for build/ac-macros/swig.m4: initialize SWIG_PY_COMPILE to /bin/false

From: Max Bowsher <maxb_at_ukf.net>
Date: 2005-02-07 17:29:39 CET

Eric Hanchrow wrote:
> I casually tried to build the python bindings (in branches/1.1.x), and
> was surprised when they didn't work. I had to look closely to figure
> out what was going wrong: the symptom was that `make' was complaining
> that there was no command named `-DLINUX=2'. Eventually I figured out
> that the top-level Makefile defined SWIG_PY_COMPILE as the empty
> string, because I'd overlooked a warning from configure:
> WARNING: swig versions 1.3.19, 1.3.20 or 1.3.21 are needed for swig
> support.
> (I have 1.3.22)
> So my suggestion is: initialize SWIG_PY_COMPILE, and other variables
> like it, to "false" rather than letting them default to the empty
> string; it might be a tiny bit easier for someone like me to notice
> what's going on then.

That's an excellent idea.

I've seen "none" used elsewhere for this purpose (deliberately not
/bin/false, because that looks like it just possibly might be meant to be

Even better, would be for the relevant make targets to check for this, and
issue a descriptive error.


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Received on Mon Feb 7 17:31:50 2005

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