LinuxQuestions.org - Can't configure prboom

Greetings!!

I downloaded prboom, a program that runs doom's wads. This program requires the development SDL libraries which I downloaded and Installed, but when I issue ./configure in the program directory I get these error message:

*** Compiling without SDL_mixer installed probably won't work
checking for SDLNet_UDP_Bind in -lSDL_net... no
configure: error: *** You must have the SDL libraries installed before you can compile prboom
*** See http://prboom.sourceforge.net/linux.html

I added /usr/lib and /usr/local/lib to my ld.so.conf file and ran ldconfig, but didn't work.
My libartsc.so.0 file is in /usr/lib

Here you have the output of the commands mentioned in the libsdl.org FAQ

output from which sdl-config

/usr/bin/sdl-config

output from sdl-config --version

1.2.6

output from locate libSDL

/usr/share/doc/libSDL1.2-1.2.3
/usr/share/doc/libSDL1.2-1.2.3/README-SDL.txt
/usr/share/doc/libSDL1.2-1.2.3/BUGS
/usr/share/doc/libSDL1.2-1.2.3/COPYING
/usr/share/doc/libSDL1.2-1.2.3/CREDITS
/usr/lib/libSDL-1.2.so.0.0.3
/usr/lib/libSDL-1.2.so.0

output from tail config.log

#line 3416 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char SDLNet_UDP_Bind();

int main() {
SDLNet_UDP_Bind()
; return 0; }

Please tell me what to do in order to fix this problem because I'd like to play again the first first-person game I played and remember those days when I was a teenager and everything was marvelous.

I use Mandrake 8.2 kernel 2.4.18-6mdk
SDL development libraries downloaded from libsdl.org

Thank you very much!!!