OSX ffmpeg compilation

In my OSX project I'm using ffmpeg lib. When I try build project with Release configuration XCode can't link with ffmpeg library:

libavformat.a, file was built for archive which is not the architecture being linked (i386)

But I can't compile ffmpeg for i386. I have 开发者_JAVA技巧tried many variants of configuration flags (./configure --arch=i386 etc. ), but without success.