iPhone: how to make a fat library containing armv7s support?

Question

I have external libraries for armv6, armv7, i386 and armv7s. When I try to put all together using lipo, I got an error message like so, saying armv7s isn't supported:

lipo: known architecture flags are: any little big ppc64 x86_64 ppc970-64 ppc i386 m68k hppa sparc m88k i860 veo arm ppc601 ppc603 ppc603e ppc603ev ppc604 ppc604e ppc750 ppc7400 ppc7450 ppc970 i486 i486SX pentium i586 pentpro i686 pentIIm3 pentIIm5 pentium4 m68030 m68040 hppa7100LC veo1 veo2 veo3 veo4 armv4t armv5 xscale armv6 armv7 armv7f armv7k

How to solve this problem?

Answer 1

You are possibly trying to use an older version of lipo that does not support armv7s. You should try that with the lipo version bundled with Xcode 4.5.

Answer 2

You would need the sources and compile it with armv7s support. Also, armv7 should work just fine on the armv7s devices too.