The Delphi for Android tool (DCCDroid.exe) run under Mono 2.4 and later.
I haven't tested on a Linux/Mac OS X machine since we don't support Lazarus and Delphi Prism.
More questions time:
Lazarus and Delphi Prism support.
Lazarus support will take while to implement and test on Linux (even if DCCDroid.exe run on Mono) also Delphi Prism use a total different form design (WPF). For now I've decided that its better to focus on pure Delphi support and later on think about Lazarus/Delphi Prism.