webalizer 설치시 오류...

[root@diibsys webalizer-2.01-10]# ./configure -with-language=korean

checking for main in -lpng... no
configure: error: png library not found... please install png.

그래서 libpng-1.2.7-1.i386.rpm 를 다운 받아서

[root@diibsys local]# rpm -Uvh libpng-1.2.7-1.i386.rpm
경고: libpng-1.2.7-1.i386.rpm: V3 DSA signature: NOKEY, key ID 443e1821
준비 중...                  ########################################### [100%]
   1:libpng                 ########################################### [100%]
이렇게 설치를 했습니다.

[root@diibsys webalizer-2.01-10]# ./configure -with-language=korean

checking for main in -lpng... no
configure: error: png library not found... please install png.

똑같은 오류 메시지가 나오네요...

머가 잘못된거에요? ^^;