quest@ubuntu-q:~$ cd .amsn_svn/amsn/
quest@ubuntu-q:~/.amsn_svn/amsn$ ./configure
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... using tcl library in /usr/lib/tcl8.4
checking tk build dir... using tk library in /usr/lib/tk8.4
checking for main in -lstdc++... yes
checking how to run the C preprocessor... gcc -E
checking for X... libraries /usr/X11R6/lib, headers
checking for gethostbyname... yes
checking for connect... yes
checking for remove... yes
checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
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
quest@ubuntu-q:~/.amsn_svn/amsn$