在AIX5.3下程序编译通过，ldd查看所需库文件均存在。但在运行程序时报错：

exec(): 0509-036 Cannot load program smartalert because of the following errors:
rtld: 0712-001 Symbol _pthread was referenced
  from module warmapsavecase(), but a runtime definition
  of the symbol was not found.
rtld: 0712-002 fatal error: exiting.

解决：出现这种错误的原因一般是由于环境变量配置问题，可修改环境变量尝试。