关于魔兽2的安装问题，请高手入内指教！

南粤浪子

我运得SETUP后，出现了这样一段文字，请问我机上少了什么？还是还有其他问题？
[root@localhost freecraft-1.18]# ./setup
##   ___________                     _________                _____  __
##   \_   _____/______   ____   ____ \_   ___ \____________ _/ ____\/  |_
##    |    __) \_  __ \_/ __ \_/ __ \/    \  \/\_  __ \__  \   __\   __|
##    |     \   |  | \/\  ___/\  ___/\     \____|  | \// __ \|  |   |  |
##    \___  /   |__|    \___  >\___  >\______  /|__|  (____  /__|   |__|
##        \/                \/     \/        \/            \/
##  ______________________                           ______________________
##                        T H E   W A R   B E G I N S
##         FreeCraft - A free fantasy real time strategy game engine
##

It appears that you are in a UNIX environment...
Use --beos or --win32 or --darwin to override

Checking for PNG library... NOT FOUND!

...You do not appear to have a working PNG library installed!

libpng is required for freecraft to compile. Please
refer to the LOCAL_PNG section in the setup script to
find out how to install a local copy to compile freecraft.

Please also note that the PNG library most likely also
requires the GZIP compression library. If you are sure
to have libpng installed, but this test still fails,
check out for libz. You may refer to the LOCAL_ZLIB
section of this script to find out how to install a local
local copy of the libz.

llc

libpng is required for freecraft to compile

估计需要安装libpng及其相应的devel包

南粤浪子

怎样安装?