我从site qt-creator-2.6.1-src.zip下载，解压缩文件夹并启动msys，其中我编写了以下命令：
cd /c/s/dist/gdb
make -f Makefile.mingw
5分钟后构建以下消息：
make [3]: *** [areadlink.o] Error 1
make [3]: Leaving directory `/c/s/dist/gdb/staging/libiconv-1.14/srclib '
make [2]: *** [all] Error 2
make [2]: Leaving directory `/c/s/dist/gdb/staging/libiconv-1.14/srclib '
make [1]: *** [all] Error 2
make [1]: Leaving directory `/c/s/dist/gdb/staging/libiconv-1.14 '
make: *** [/c/s/dist/gdb/staging/lib/libiconv.a] Error 2
原因是什么，请告诉我们。