I got this error, what this mean please?

Unity Engine
,
1

Hi. i got this error
please what this means.

No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=i386, VALID_ARCHS=armv6).

2

you tried to compile it for the wrong platform

Unity iPhone can only compiled to Iphone, not to the simulator or even regular application

3

I got a error and I don’t Know what it means:
Microsoft (R) Visual C# Compiler version 2.9.1.65535 (9d34608e)
Copyright (C) Microsoft Corporation.