Because the target program is a command line program this question isn't exactly about Lazarus, but rather FPC.

I have FPC 2.2.0 working on a 32-bit Linux (Debian) machine. With it I successfully compile and produce 32-bit Linux executables.

With such a setup (possibly a later FPC version) can I cross-compile to produce a 64-bit Linux executable?

If so, are there instructions in the Wiki? I did search, but this page I found did not address my question: http://wiki.freepascal.org/Cross_compiling

Thanks!
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There is a Free Pascal mailling list. You can find it in the Free Pascal website: www.freepascal.org

Plus, are you sure you need a 64-bits version? AFAIK most 64-bits computers can run 32-bits software seamlessly.

In theory you could use an install with source to build the crosscompiler.

But rule of thumb for FPC is : "other CPU architecture -> other compiler binary". So you need a

If so, are there instructions in the Wiki? I did search, but this page I found did not address my question: http://wiki.freepascal.org/Cross_compiling

I can only stress the last paragraph of that one a bit more.

Note that if you need to link to libraries, it gets more complicated.