linking an Apple framework into a static lib project and then linking the static lib into an application project...
linking an Apple framework into a static lib project and then linking the static lib into an application project...
- Subject: linking an Apple framework into a static lib project and then linking the static lib into an application project...
- From: Glen Haderman <email@hidden>
- Date: Tue, 19 Jul 2011 17:11:07 -0700 (PDT)
I've got a Mac/Cocoa static library project. It links against IOKit.framework. It builds fine.
I take the .a and header and import them into a Mac/Cocoa project.
I get the following linker errors:
Undefined symbols:
"_IORegistryEntryCreateCFProperty", referenced from:
+[MyLibrary getThingamajigFromIORegistry] in libMyLibrary.a(MyLibrary.o)
"_kIOMasterPortDefault", referenced from:
_kIOMasterPortDefault$non_lazy_ptr in libMyLibrary.a(MyLibrary.o)
(maybe you meant: _kIOMasterPortDefault$non_lazy_ptr)
"_IOObjectRelease", referenced from:
+[MyLibrary getThingamajigFromIORegistry] in libMyLibrary.a(MyLibrary.o)
"_IORegistryEntryFromPath", referenced from:
+[MyLibrary getThingamajigFromIORegistry] in libMyLibrary.a(MyLibrary.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status
Adding IOKit.framework to the **application** project resolves the problem (obviously), but how can I set everything up so that references to other Apple frameworks which are internal to my static library and linked into the static library... are honored by the linker when building application projects which link against that static library?
I know the difference between static and dynamic libraries, but aren't the internally linked libraries (whether dynamic or static) which a static library references within its own code saved in the library archive (the references I mean) in a way that ld can understand when that .a library is then linked into some other project?
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