good day to all of you.
i´m having a problem building a simple C program, it`s a sample that comes with the GdChart library.
here´s the code

/* GDCHART 0.10.0dev 1st CHART SAMPLE 2 Nov 2000 */
/* Copyright Bruce Verderaime 1998-2004 */

/* writes gif file to stdout */

/* sample gdchart usage */
/* this will produce a 3D BAR chart */
/* this is suitable for use as a CGI */

/* for CGI use un-comment the "Content-Type" line */

#include <stdio.h>

#include "gdc.h"
#include "gdchart.h"

main()
{
/* ----- set some data ----- */
/* float a[6] = { 0.5, 0.09, 0.6, 0.85, 0.0, 0.90 }, */
/* b[6] = { 1.9, 1.3, 0.6, 0.75, 0.1, 2.0 }; */
float a[2][6] = { { 0.5, 0.09, 0.6, 0.85, 0.0, 0.90 },
{ 1.9, 1.3, 0.6, 0.75, 0.1, 2.0 } };

/* ----- X labels ----- */
char *t[6] = { "Chicago", "New York", "L.A.", "Atlanta", "Paris, MD\n(USA) ", "London" };
/* ----- data set colors (RGB) ----- */
unsigned long sc[2] = { 0xFF8080, 0x8080FF };

GDC_BGColor = 0xFFFFFFL; /* backgound color (white) */
GDC_LineColor = 0x000000L; /* line color (black) */
GDC_SetColor = &(sc[0]); /* assign set colors */

/* printf( "Content-Type: image/gif\n\n" ); tell browser type */
GDC_image_type = GDC_GIF;
/* ----- call the lib ----- */
GDC_out_graph( 250, 200, /* short width, height */
stdout, /* FILE* open FILE pointer */
GDC_3DBAR, /* GDC_CHART_T chart type */
6, /* int number of points per data set */
t, /* char*[] array of X labels */
2, /* int number of data sets */
(float*)a, NULL ); /* float[] data set 1 */
/* b ); ... data set n */

exit(0);
}
I tried to link all the libraries needed for this sorce but i´m still having the problem.
and here it`s the error:

gcc -Wall -g -o tabla ejemgdchart.o -lgif /usr/lib/libgd.so -L/usr/X11R6/lib -lXpm -lX11 -lfontconfig /usr/lib/libfreetype.so -lz -lgdc /usr/lib/libjpeg.so -lm -lpng
/usr/lib/gcc-lib/i386-redhat-linux/3.3.3/../../../libgdc.a(gdc_pie.o)(.text+0x1239): In function `GDC_out_pie':
: undefined reference to `GDCPIE_title_font'
/usr/lib/gcc-lib/i386-redhat-linux/3.3.3/../../../libgdc.a(gdc_pie.o)(.text+0x1241): In function `GDC_out_pie':
: undefined reference to `GDCPIE_label_font'
/usr/lib/gcc-lib/i386-redhat-linux/3.3.3/../../../libgdc.a(gdc_pie.o)(.text+0x1249): In function `GDC_out_pie':

the function GDC_out_pie it`s from a function of the gdchart, I tried