Undefined symbols for architecture armv7:

"_CVPixelBufferGetHeight", referenced from:

-[ZBarCVImage convertCVtoRGB] in libzbar.a(ZBarCVImage.o)

"_CVPixelBufferRetain", referenced from:

-[ZBarCVImage setPixelBuffer:] in libzbar.a(ZBarCVImage.o)

"_CVPixelBufferRelease", referenced from:

-[ZBarCVImage setPixelBuffer:] in libzbar.a(ZBarCVImage.o)

"_CMSampleBufferGetNumSamples", referenced from:

-[ZBarCaptureReader captureOutput:didOutputSampleBuffer:fromConnection:] in libzbar.a(ZBarCaptureReader.o)

"_iconv_open", referenced from:

__nl_find_msg inGStreamer(libintl_a_i386_-dcigettext.o)

这些错误并非是配置不正确，而是需要增加libiconv.dylib这个库，

把coreVideo.FrameWork加进去！CoreMedia.FrameWork 加进去

增加之后就可以正常编译运行了，