implicit declaration of function ‘__sysconf’

[Kamaraju S Kusumanchi]

This must be a trivial question. Consider the following test case


debian_chroot:sid:kusumanchi:/home/625341/w2# cat test.c 
#include <sys/user.h>

void test (long int a);

void test (long int a)
{
    a = NBPG;
}


debian_chroot:sid:kusumanchi:/home/625341/w2# gcc -c -Wall -Werror test.c
test.c: In function ‘test’:
test.c:7:5: error: implicit declaration of function ‘__sysconf’ [-
Werror=implicit-function-declaration]
cc1: all warnings being treated as errors


What should I do to make this warning go away? I am trying to reduce the 
testcase for http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627273 and fix 
the build failure. But no matter what I do, I am unable to eliminate the 
warning.

I tried inserting
#include <unistd.h>

but that did not help. Any other suggestions?

thanks
raju
-- 
Kamaraju S Kusumanchi
http://malayamaarutham.blogspot.com/