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Date: Sat, 8 Oct 2005 23:51:40 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Joost Kraaijeveld <J DOT Kraaijeveld AT Askesis DOT nl>
cc: Cygwin <cygwin AT cygwin DOT com>
Subject: Re: configure and asinl function problem
In-Reply-To: <1128780609.20665.158.camel@Panoramix>
Message-ID: <Pine.GSO.4.63.0510082349300.501@slinky.cs.nyu.edu>
References: <1128766196 DOT 20665 DOT 124 DOT camel AT Panoramix>   <4347CC39 DOT 6090903 AT myrealbox DOT com>  <1128780609 DOT 20665 DOT 158 DOT camel AT Panoramix>
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On Sat, 8 Oct 2005, Joost Kraaijeveld wrote:

> The problem is that configure seems to think that there *is* support
> "long double math": the test succeeds and HAVE_ASINL (and all other
> double math) is defined. So both compile and link appear to be succesful
> as far as configure is concerned.
>
> Before choosing a solution, I want to understand why the problem is
> occuring.
>
> According to the cited mail however, that is because configure checks
> the availibility of "long double math" with a short piece of code,
> supplying *it's own* function definition (and not using e.g. math.h) and
> linking with *some* libraries. Because I do not understand how configure
> is doing that (I have looked into the macros but failed to understand
> them), I do not know what exactly the code is configure is using or to
> which libraries configure links the executable.

FYI (and this is not Cygwin-specific), you can find the exact code run by
configure (with the exact compile command and the output) in config.log.
No need to expand the autoconf macros by hand.
HTH,
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

If there's any real truth it's that the entire multidimensional infinity
of the Universe is almost certainly being run by a bunch of maniacs. /DA

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