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Subject:	configure and asinl function problem
From:	Joost Kraaijeveld <J DOT Kraaijeveld AT Askesis DOT nl>
To:	Cygwin <cygwin AT cygwin DOT com>
Date:	Sat, 08 Oct 2005 12:09:56 +0200
Message-Id:	<1128766196.20665.124.camel@Panoramix>
Mime-Version:	1.0
X-IsSubscribed:	yes

Hi,

I am trying to compile MICO, a CRBA implementation. It uses configure
for it's configuration.

Using "AC_CHECK_FUNCS(infnanl isnanl isinfl asinl ldexpl frexpl fabsl
floorl ceill):" in configure.in results in  "#define HAVE_ASINL 1" in
config.h

This appears however to be not true: during the actual compilation the
compiler complains when encountering the function. There is actually no
header that defines the function, so the compiler is right ;-).

According to a mail I found on internet
(http://www.mico.org/pipermail/mico-devel/2005-March/009248.html) this
happens because configure does not uses a compiler header but creates
its own function prototype and the function is included in the libraries
(as far as I can see it appears to be in libstdc++.a) 

1. Is the diagnose of the problem correct (I have looked into the macros
but I have to admit that I do not understand what they do) ?
2. If so, is there a solution for this problem?
3. If stdc++ contains asinl, is there a reason why it is not used?

TIA


-- 
Groeten,

Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
e-mail: J DOT Kraaijeveld AT Askesis DOT nl
web: www.askesis.nl 



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