On Jun 11, 2008, at 6:29 PM, Graham Cox wrote:
I have a project which builds a static library from some pure C
code. I want to use this library in another Cocoa project. I've set
up the cross-project dependency and included the .a file in the
Cocoa project. When the Cocoa project builds it complains (warning)
that the library "file is not of required architecture". Is this
referring to whether it's PPC/i386/universal? In the library
project, the architecture build setting only offers me 32 bit or 64
bit, not i386/PPC.
What does the warning really mean and how should I fix it?
It means you're building the project target against a static library
that is missing the requisite architecture. If, for example, you're
building a project for x86_64, then _all_ libraries you link the
project to _must_ include an x86_64 build. You can use "lipo -info" to
find out the architectures supported by a binary.
More likely than not, you're trying to build a traditional 2-way
universal binary against a PPC-only library, or a 4-way universal
binary against a PPC-only or 32-bit-only library. To fix it, you
either need to drop application support for the unsupported
architectures, or if possible, recompile the library with support for
the unsupported architectures.
Nick Zitzmann
<http://www.chronosnet.com/>
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