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From:	Nicholas Sherlock <n DOT sherlock AT gmail DOT com>
Subject:	Re: Using rand_r
Date:	Thu, 14 May 2009 17:49:18 +1200
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David Billinghurst wrote:
 > Nicholas Sherlock wrote:
 >> Hey everyone,
 >>
 >> I'm trying to use the function rand_r with gcc-4 in Cygwin 1.7, all 
my packages are up to date. It's supposed to be defined in stdlib.h, and 
I can see it there. But if I compile a program which uses it, I get:
 >>
 >> warning: implicit declaration of function 'rand_r'.
 >>
 >> The reason seems to be the check for #ifndef __STRICT_ANSI__ in 
stdlib.h. Even though I'm compiling with -std=c99, __STRICT_ANSI__ still 
gets declared, so the definition of rand_r is unavailable. This seems to 
be the same problem stated here:
 >
 >
 > Try -std=gnu99.  It doesn't define __STRICT_ANSI__
 >
 > This doesn't answer your question, unfortunately.

Thanks, that does solve my immediate problem. But I'm really hoping to 
compile as vanilla C99 as I can manage, since I'll also be using my code 
with non-GNU compilers.

Cheers,
Nicholas Sherlock


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