#13 chbg-1.5 "make" fails with new libpng-1.2.5

[ksandre]

"make" fails for chbg-1.5 since updating "libpng" per
below:
=========================================

patches/packages/libpng-1.2.5-i486-1.tgz: Upgraded to
libpng-1.2.5
and patched possible security issues including buffer
and integer
overflows and null pointer references. These issues
could cause
program crashes, or possibly allow arbitrary code
embedded in a
malicious PNG image to execute. The PNG library is
widely used
within the system, so all sites should upgrade to the
new libpng
package.
For more details, see:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0597

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0598

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0599
(* Security fix *)

The "make" error shows thus:

absimg.o: In function `absimg_rgb_savePNG':
/usr/local/src/chbg-1.5/src/absimg.c:97: undefined
reference to `png_create_write_struct'
/usr/local/src/chbg-1.5/src/absimg.c:99: undefined
reference to `png_create_info_struct'
/usr/local/src/chbg-1.5/src/absimg.c:102: undefined
reference to `png_destroy_write_struct'
/usr/local/src/chbg-1.5/src/absimg.c:107: undefined
reference to `png_init_io'
/usr/local/src/chbg-1.5/src/absimg.c:111: undefined
reference to `png_set_IHDR'
/usr/local/src/chbg-1.5/src/absimg.c:114: undefined
reference to `png_convert_from_struct_tm'
/usr/local/src/chbg-1.5/src/absimg.c:116: undefined
reference to `png_set_tIME'
/usr/local/src/chbg-1.5/src/absimg.c:118: undefined
reference to `png_write_info'
/usr/local/src/chbg-1.5/src/absimg.c:125: undefined
reference to `png_write_image'
/usr/local/src/chbg-1.5/src/absimg.c:128: undefined
reference to `png_write_end'
/usr/local/src/chbg-1.5/src/absimg.c:130: undefined
reference to `png_destroy_write_struct'
collect2: ld returned 1 exit status
make[1]: *** [chbg] Error 1
make[1]: Leaving directory `/usr/local/src/chbg-1.5/src'
make: *** [all-recursive] Error 1