How to fetch ./configure parameters used at last time?

Solution 1:

Was the decompressed source directory kept around? If so, the configure flags would typically be in config.status or config.log.

This differs slightly depending on the software and whether or not autoconf was used.

Solution 2:

config.status has a --config flag to print out the last configuration. I found it by running ./config.status --help

--config     print configuration, then exit

So just run ./config.status --config, and it will print out all the configure parameters.