undefined references while linking gnome-libs

[Johan Vervloet <johan vervloet ua ac be>]

Hello,

I'm trying to install gnome 1.4 beta 1 on my system, but I get these
error messages while linking gnome-libs :

/usr/local/lib/libgdk_imlib.a(modules.o): In function `loader_png':
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:32:
undefined reference to `png_create_read_struct'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:36:
undefined reference to `png_create_info_struct'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:54:
undefined reference to `png_init_io'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:56:
undefined reference to `png_read_info'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:57:
undefined reference to `png_get_IHDR'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:63:
undefined reference to `png_set_expand'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:64:
undefined reference to `png_set_strip_16'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:65:
undefined reference to `png_set_packing'
/home/jvvloet/download/gnome/install/imlib-1.9.9/gdk_imlib/io-png.c:66:
undefined reference to `png_get_valid'

(and lots of more messages like this)

Does anybody have a clue what I have to do ?

Thank you,

Johan