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/usr/bin/ld: Undefined symbols with openssl on Mac OS X 10.4

Hello everybody,
i'm writing some simple C code (in Mac OS X 10.4) that uses an openssl
library. The library is included with:

#include <openssl/bn.h>

and I have installed it correctly because when in my program I
declare:

BIGNUM *a;
BIGNUM *b;
BIGNUM *n;

everything compiles correctly.

I experience an error when i compile:

a = BN_new();
b = BN_new();
n = BN_new();

The output is the following:

/usr/bin/ld: Undefined symbols:
_BN_new
collect2: ld returned 1 exit status

How can i fix this problem?
Thank you very much for your interest.
Paolo

Jul 2 '07 #1
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