App build with RestKit and Three20 fails on clean Build directory about restkit

[blakewatters]

I think this is because RestKit and Three20 do not have a dependency between them and parallel building is going on. When I have seen this, its because RestKit can't find the Three20 headers it needs to compile libRestKitThree20.a. I think we can copy a private copy of the TTModel header into RestKit and that's all it will need to compile -- the symbols will be resolved at link time. Are you seeing something different?

[jeffarena]

Actually, yes, I'm seeing something slightly different. libRestKitThree20.a is building just fine in my case. But my GateGuru targets are failing to build due to missing headers. Here's the build sequence I'm seeing and where I think the problem is:

1. Build RestKit dependency (libRestKit[Network|ObjectMapping|Support|CoreData|JSONParserJSONKit].b)
2. RestKit target executes copy headers, which copies everything from the above subsystems into the proper location
3. Build Three20 dependencies
4. Build libRestKitThree20.a
5. Build GateGuru

The GateGuru build step, #5, fails because the copy headers script executed in step #2 misses the libRestKitThree20.a headers that were built as part of step #4. This is obvious when you delete the RestKit/Build directory, but not obvious thereafter. Regardless, you're libRestKitThree20.a headers are guaranteed to always be one build behind as a result of the copy headers task executing in step #2 and not in between step #4 and #5. Make sense?

Note that if I add a copy headers step in between #4 and #5, by adding a Copy Headers task to the RestKitThree20 target, in addition to the RestKit target, everything works fine and as expected.

Hope this helps clarify.

Thanks,
Jeff

[blakewatters]

Got it. I have added a run script phase to the end of libRestKitThree20.a that re-runs the copy files script. It uses rsync, so it shouldn't show down the build noticeably. Pull 0.9 and give her a try.

[blakewatters]

I have also switched the build dependency on Three20 from the Support target to the aggregate target so that if you link just Three20, you get everything built and all the headers will copy properly

[jeffarena]

Cool, will check it out first thing tomorrow. Thanks, Blake!

On Mar 24, 2011, at 7:07 PM, [email protected] wrote:

I have also switched the build dependency on Three20 from the Support target to the aggregate target so that if you link just Three20, you get everything built and all the headers will copy properly

Reply to this email directly or view it on GitHub:
https://github.com/twotoasters/RestKit/issues/34#comment_915548

[blakewatters]

Closing this out.