So we have 3 xcode project files - A.xcodeproj, B.xcodeproj and
C.xcodeproj. The first two each contain a single target - static
libs
A and B. The last one contains a single executable target C. The C
project has dependencies on A.xcodeproj and B.xcodeproj and the C
target
links against the A.a and B.a libraries. There's also a cpp file that
defines main() and calls functions in libs A and B.
This is how I've mentally broken down the above, numbered for easy
reference:
1. A.xcodeproj contains TargetA which builds libA.a
2. B.xcodeproj contains TargetB which builds libB.a
3. C.xcodeproj contains TargetC which builds commandC
4. C.xcodeproj contains a reference to A.xcodeproj
5. TargetC in C.xcodeproj links against libA.a
6. C.xcodeproj contains a reference to B.xcodeproj
7. TargetC in C.xcodeproj links against libB.a
My question is, is the following information also set? It's not
clear from your description above whether this is the case. This
information is specified in the Dependencies pane of the General tab
of the info window for a target.
8. TargetC in C.xcodeproj has a dependency on TargetA in A.xcodeproj
9. TargetC in C.xcodeproj has a dependency on TargetB in B.xcodeproj
The information in #8 is not derived automatically from #4, and #5;
it must be specified explicitly.
However, I would expect not having #8 or #9 to give you the opposite
problem from what you report -- that if you change a file used to
build libA.a, libA.a isn't rebuilt when you build TargetC.
-- Chris
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