bogon:SpringBoardAccess liwei$ make all /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-llvm-g++-4.2 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.1.sdk -Werror -Wall -Wpointer-arith -dynamiclib -o SpringBoardAccess.dylib SpringBoardAccessExtension.mm -init _SpringBoardAccessInitialize -framework CoreFoundation -framework Foundation -framework Foundation -framework CoreFoundation -lobjc -L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.1.sdk/System/Library/Frameworks/IOKit.framework/Versions/A -lIOKit /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.1.sdk/System/Library/PrivateFrameworks/BluetoothManager.framework/BluetoothManager -lobjc -multiply_defined suppress -framework CoreFoundation -framework Foundation -framework UIKit -L../3rdparty -lsubstrate ld: library not found for -lstdc++ collect2: ld returned 1 exit status make: * [SpringBoardAccess.dylib] Error 1 and provide any additional information below.

if set IOS5.1 ,is ok!

don't know exactly, but this points out a somehow confused Xcode installation