编译libquickfix.dylib后，将其与我的程序在Xcode中链接，错误是：
ld: warning: ignoring file /Users/marekbaranowski/jmbSoftware/_NOM2/
QuickFIX/libquickfix.dylib, file was built for x86_64
which is not the architecture being linked (i386):
/Users/marekbaranowski/jmbSoftware/_NOM2/QuickFIX/libquickfix.dylib
如何在一个dylib中将平台更改为i386，armv7或两者？