我在网上下载了gaim1.50,
tar 解压时提示：
Cannot change ownership to uid 500, gid 500: Operation not permitted

在./configure时提示：
checking build system type... i686-pc-linux-gnulibc1
checking host system type... i686-pc-linux-gnulibc1
checking target system type... i686-pc-linux-gnulibc1
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking for sed... /bin/sed
checking for gcc... gcc
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.
checking build system type... i686-pc-linux-gnulibc1
checking host system type... i686-pc-linux-gnulibc1
checking target system type... i686-pc-linux-gnulibc1
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking for sed... /bin/sed
checking for gcc... gcc
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.

是少装了什么吗，为什么装不上，who can tell me ?

怎么没人回

用root登录、、解压、编译

你给的信息太少。你应该先看看 config.log 里边写的什么，既然玩 Linux 就别怕看字母。好好想想看看，这样的问题应该能自己解决的。