sh: symbol lookup error: sh: undefined symbol: rl_signal_event_hook错误

在运行ds-5的环境时，提示：

$ ./embedded_command_shell.sh

sh: symbol lookup error: sh: undefined symbol: rl_signal_event_hook

WARNING: DS-5 install not detected. SoC EDS may not function correctly without a DS-5 install.

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Altera Embedded Command Shell

Version 15.1 [Build 185]

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google后，提到这是"Python 2.7.6 does not compile with readline 6.3"(http://bugs.python.org/issue20374)，参考其解决方法：

$ cd /opt/altera/embedded/host_tools/python/lib/
/opt/altera/embedded/host_tools/python/lib$ sudo rm libreadline.so*
/opt/altera/embedded/host_tools/python/lib$ sudo ln -s /usr/lib/libreadline.so.6.3 libreadline.so.6.3
/opt/altera/embedded/host_tools/python/lib$ sudo ln -s libreadline.so.6.3 libreadline.so.6
/opt/altera/embedded/host_tools/python/lib$ sudo ln -s libreadline.so.6 libreadline.so

被删除的是 libreadline.so.6.2

然后就没有问题了。