Date: Tue, 6 Apr 1999 09:32:52 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Chris Hut <chut AT wesleyan DOT edu>
cc: djgpp AT delorie DOT com
Subject: Re: help w/ STL random_shuffle function (lrand48() undefined)
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On Mon, 5 Apr 1999, Chris Hut wrote:

> This seems like a faq type thing, but I checked and haven't seen this
> problem listed anywhere...

The FAQ only includes FREQUENTLY-asked questions.  You should also
search the DJGPP mail archives
(http://www.delorie.com/djgpp/mail-archives/), as the FAQ says.  This
isssue popped up a couple of times before.

> when compiling I get this error:
> c:/djgpp/lang/cxx/stl_algo.h: In function 'void __random_shuffle<int *,
> int>(int *, int *, int *)':
> c:/djgpp/lang/cxx/stl_algo.h:617: 'lrand48' undeclared (first use this
> function)
> (stuff about each undeclared identifier only reported once)

This is a bug in libstdcxx: it doesn't define the symbol that tells
the rest of the code DJGPP doesn't have the rand48 family of
functions.

To solve this problem, edit the file lang/cxx/stl_config.h and add the 
following snippet to it:

#ifdef __DJGPP__
# define __STL_NO_DRAND48
#endif

After that, your program should compile and link without this problem.