在Fedora14下安装ENVI或IDL后，运行ittlicense或启动idl时，会提示下面的错误信息：

/usr/local/itt/idl/idl80/bin/bin.linux.x86/idl: error while loading shared libraries: libidl.so.8.0: cannot enable executable stack as shared object requires: Permission denied

解决方法如下：

终端中执行下面语句： execstack --clear-execstack /usr/local/itt/idl/idl80/bin/bin.linux.x86/libidl.so.8.0