Fix resolution on OSX
Fix resolution on OSX

rust-lang/libc,rust-lang-nursery/libc,rust-lang/libc,DiamondLovesYou/libc,superriva/libc,superriva/libc,edunham/libc,cybergeek94/libc,anatol/libc,anatol/libc,rust-lang-nursery/libc,edunham/libc,philippkeller/libc,cybergeek94/libc,superriva/libc,edunham/libc,diwic/libc,DiamondLovesYou/libc,diwic/libc,zethra/libc,diwic/libc,philippkeller/libc,cactorium/libc,mneumann/libc,zethra/libc,rust-lang-nursery/libc,diwic/libc,DiamondLovesYou/libc,DiamondLovesYou/libc,philippkeller/libc,cactorium/libc,cactorium/libc,mneumann/libc,rust-lang/libc,anatol/libc,cybergeek94/libc,mneumann/libc,zethra/libc,edunham/libc