When you run an Inline::C script with the CLEAN_AFTER_BUILD=>0; configure option you can then go into the _Inline/build directory and examine the files that Inline::C has generated - which includes the XS file.
I actually always use InlineX::C2XS - which taps into Inline::C to generate the XS file (and, optionally, Makefile.PL, MANIFEST, test script).

InlineX::C2XS is a module I wrote - it suits me but might not be to everyone's liking.
There's a demo in the source(in the demos/context folder).
The build.pl script therein (which is the script that you run) begins with use InlineX::C2XS qw(c2xs context context_blindly);.
I think that needs to be changed to use InlineX::C2XS qw(c2xs context); - which is something I should fix :-(

Cheers,
Rob