Does the compiler settings difference mean even if the community back ports Maemo 5 to OMAP2 that Maemo 5/OMAP2 applications would need their own repository?

So we would end up with an application being compiled (potentially) for:
Maemo 5/OMAP3 (OS2009?)
Maemo 5/OMAP2 (OS2009HE?)
Maemo 4 (OS2008)
Maemo 3 (OS2007)
Maemo 2 (OS2006)

Frank