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，