Problem des packages

je suis debutant avec lunix.j 2jours j'arrive pas a installer un petit logiciel.
j essayer avec amsn.tar.bz2
voila ./configure me donne ca :
chmod: changing permissions of `conf8931.sh': Operation not permitted
checking for prefix by checking for wish... /usr/bin/wish
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking tcl build dir... warning: locate: could not open database: /var/lib/slocate/slocate.db: No such file or directory
warning: You need to run the 'updatedb' command (as root) to create the database.
using tcl library in /usr/lib
checking tk build dir... using tk library in /usr/lib
checking for main in -lstdc++... yes
checking how to run the C preprocessor... gcc -E
checking for X... no
"Could not find X11 devel package
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for png_read_info in -lpng... no
configure: error: libpng is required
apparament il ya un pb avec X11 m s'existe sous /etc.
j'arrive pastelecharger gcc, g++, tk, tk-dev, tcl, tcl-dev, tcltls et ces
librairies : libpng12-0 libpng12-dev libpng3
libpngwriter0-dev libpngwriter0c2 libjpeg-progs
libjpeg62 libjpeg62-dev qlq m'a dit qu' ils sont necessaire pour la compilation
aider moi a telecharger et a installer ces packages please avec detaille svp merci