Here you have an simple example with Lazarus /fpc work on Windows and Linux.

http://www.lazarus.freepascal.org/index.php/topic,7246.msg34315.html#msg34315

*Lazarus* is a cross platform
<http://en.wikipedia.org/wiki/Cross_platform>visual
IDE <http://en.wikipedia.org/wiki/Integrated_development_environment> which
provides a Delphi
<http://en.wikipedia.org/wiki/Delphi_programming_language>-mimic
development environment for
Pascal<http://en.wikipedia.org/wiki/Pascal_programming_language>and
Object
Pascal <http://en.wikipedia.org/wiki/Object_Pascal> developers. It is
developed for and supported by the Free
Pascal<http://en.wikipedia.org/wiki/Free_Pascal>
compiler <http://en.wikipedia.org/wiki/Compiler>[update]<http://en.wikipedia.org/w/index.php?title=Lazarus_%28software%29&action=edit>.
Lazarus is available for several Linux
<http://en.wikipedia.org/wiki/Linux>distributions,
FreeBSD <http://en.wikipedia.org/wiki/FreeBSD>, Microsoft
Windows<http://en.wikipedia.org/wiki/Microsoft_Windows>and Mac
OS X <http://en.wikipedia.org/wiki/Mac_OS_X>.

Here you can download Lazarus

http://www.lazarus.freepascal.org

In the forum there more info for access Firebird (SqlDb, ZeosLib, Mercury
Database Object,etc)

Regards


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