using clang : 2.0~iphone
   : /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/clang++ -arch armv7 -mthumb -fvisibility=hidden -fvisibility-inlines-hidden
   : <striper>
   : <architecture>arm <target-os>iphone
   ;
using clang : 2.0~iphonesim
   : /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang++ -arch i386 -fvisibility=hidden -fvisibility-inlines-hidden
   : <striper>
   : <architecture>x86 <target-os>iphone
   ;
