armv6 / armv7 errors when compiling for iPhone

I am having problems trying to compile my App to my iPhone. I upgraded to the new SDK and have 4.0 on my phone... which I did not do that. I am compiling for 3.1.2 - It works fine in the simulator but when I "build" for the Device, it gives me this line of errors:

Link /Users/me/Apps/myapp/build/app.build/Debug-iphoneos/app.build/objects-normal/armv7/appname
In /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.3.sdk/user/lib/libz.dylib, missing required architecture armv7 in file

then the actual failure occurs on:

Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1

Any help 开发者_Python百科would be greatly appreciated

After poking around for a while, I found how to fix this problem.

I went into "Project" > "Edit Active Target 'MyProjectName'"'

Scroll down to the "Serch Paths" heading

Double click on the "Library Search Paths" row

This contained a Search Path that said (something like) $(SCROOT)/../iPhone.Simulator/..."

Not sure why that line got in there, but I deleted it.

Then I scrolled up to the top of the same screen and checked the checkbox next to "Architecture" - "Build Active Architecture Only". (I was choosing armv6 but it was building for armv6 and armv7)

Then everything worked.

The error seems to indicate you are building against the 3.1.3 simulator. Are you sure you're targeting the device?