在AIX 5.3.0.0版本下执行，没问题！
在AIX 5.2.0.0下执行报错：
Symbol resolution failed for comsrvh because:
symbol _fd_select(number 42) is not exported from dependent module /usr/lib/libc.a(shr.o).
Examine .loader section symbols with the 'dump -Tv' command
------解决方案--------------------------------------------------------
从信息没看出来错误....
------解决方案--------------------------------------------------------
libc版本不一致，导致有些符号丢失