Configuration and compilation settings used for Ubuntu packages

Solution 1:

Ubuntu binaries may contain patches as well.

Best thing to do is to download the source with apt-source

You may need to Enable the source repositories

apt-source will download and unpackage the source code.

apt-source foo

You can then examine the source code, any patches, and the configuration options.

The compile options are in debian/rules

Note: there is sometimes some variation in some of the packages.

See also

http://www.cyberciti.biz/faq/rebuilding-ubuntu-debian-linux-binary-package/

The packaging guide is invaluable when learning how the source code is packaged

https://wiki.ubuntu.com/PackagingGuide/Complete