From: nobu.nokada@...
Date: 2005-04-16T16:24:04+09:00
Subject: Re: mkmf questions

Hi,

At Sat, 16 Apr 2005 01:50:24 +0900,
Matthew Thill wrote in [ruby-talk:138371]:
> have_library: checking for atan() in -lm... -------------------- no
> 
> "gcc -o conftest -I/home/matt/software/ruby/libxml-ruby 
> -I/usr/local/lib/ruby/1.8/x86_64-linux -I/usr/lib64/include  -g -O2 
> conftest.c  -L'/usr/lib64/lib' -Wl,-R'/usr/lib64/lib' -L'/usr/local/lib' 
> -Wl,-R'/usr/local/lib' -L'/usr/local/lib' -Wl,-R'/usr/local/lib' 
> -rdynamic -Wl,-export-dynamic    -lnsl  -lruby-static -lm -lnsl  -ldl 
> -lcrypt -lm   -lc"
> conftest.c: In function `t':
> conftest.c:4: error: too few arguments to function `atan'

Seems atan() is defined as a macro.  Try changing atan in
have_library to other math function.  Or, to

  macro_defined?("atan", "") or have_library("m", "atan")

-- 
Nobu Nakada