DougHua wrote:
I still don't know how to verify my system configuration and setup (PATH
etc.).
Could you please give me more hints?

For example,

$ echo $PATH

should show something like this:

/usr/local/bin:/usr/bin:/bin:/cygdrive/c/WINDOWS/system32:[...]

i.e., Cygwin directories should be searched before Windows ones.

Obviously, you should verify if 'g77' Cygwin package is installed.

Angelo

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