feature request: cross-bundling for different systems from one

[patricus3]

hi. I would want to be able to cross-bundle the game for multiple platforms, just from one environment, is it viable to inplement someday?

[patricus3]

  ok, so there's a pragma for platforms, but you can't use 2 of them to compile for 3 platforms, could you make it work so I can do it without modifying the src when ever I need to recompile for all 3 platforms?