Auch, sorry, wrong list. Will repost in users.
> On Tue 15 Dec, 15, at 02:30, Valentin Radu via swift-dev
> <swift-dev@swift.org> wrote:
>
> Hello all,
>
>
> I’m having some strange issues on osx when trying to link a C library module.
> I’ve successfully did this before with another library, however, for some
> reason this one doesn’t work.
> My module map looks like this:
>
> module CFCGI [system] {
> header "/usr/local/include/cfcgi/cfcgi.h"
> link "cfcgi"
> export *
> }
>
> And the output:
>
> swift build
> Compiling Swift Module 'April' (1 sources)
> Linking Executable: .build/debug/April
> Undefined symbols for architecture x86_64:
> "_cfcgi_create", referenced from:
> _main in main.swift.o
> "_cfcgi_free", referenced from:
> _main in main.swift.o
> "_cfcgi_start_and_wait", referenced from:
> _main in main.swift.o
> ld: symbol(s) not found for architecture x86_64
>
>
> It looks like the linker ignores the `link "cfcgi”` part.
> I tried lots of things but failed to find the reason behind this. I’m
> starting to think this might be related to this paragraph in the clang docs:
>
> "Automatic linking with the link directive is not yet widely implemented,
> because it requires support from both the object file format and the linker.
> The notion is similar to Microsoft Visual Studio’s #pragma comment(lib…).”
>
> Unfortunately I find it a little vague and I can’t know for sure if it
> applies here.
>
> So far, this is what I know for sure:
> - libcfcgi.a is in /usr/local/lib and it’s compiled for x86_64
> - libcfcgi.a contains the above mentioned symbols, tested it with nm and
> linked it in a small C program
> - I’m on osx and build with the swift-2.2-SNAPSHOT-2015-12-01-a toolchain
>
>
> Any input on this would be greatly appreciated!
>
> Valentin Radu
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