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POUndefined symbols for architecture armv7 after adding .a file
 

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  1. POUndefined symbols for architecture armv7 after adding .a file
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    <p>I'm trying to build a small app using a *.a, *.h file I received from a certain vendor. this is the first time I'm adding external files to a project. </p> <p>I added the files and I am getting these errors. </p> <blockquote> <p>Undefined symbols for architecture armv7:</p> <p>"_vDSP_fft_zropD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_vclrD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_vdbconD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_vmulD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_hamm_windowD", referenced from: _fft_hr_init in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_zaspecD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_OBJC_CLASS_$_EAAccessoryManager", referenced from: objc-class-ref in libmyTrekSDK_armv7.a(hrMonitor.o) "_EAAccessoryDidDisconnectNotification", referenced from: -[HRMonitor startup] in libmyTrekSDK_armv7.a(hrMonitor.o) "_vDSP_create_fftsetupD", referenced from: _fft_hr_init in libmyTrekSDK_armv7.a(hr_calc.o) "_EAAccessoryDidConnectNotification", referenced from: -[HRMonitor startup] in libmyTrekSDK_armv7.a(hrMonitor.o) "_OBJC_CLASS_$_EASession", referenced from: objc-class-ref in libmyTrekSDK_armv7.a(hrMonitor.o) "_vDSP_ctozD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_maxmgvD", referenced from: _fft_hr_estimation in libmyTrekSDK_armv7.a(hr_calc.o) "_vDSP_destroy_fftsetupD", referenced from: _fft_hr_free in libmyTrekSDK_armv7.a(hr_calc.o) ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation)</p> </blockquote> <p>So far I've tried: (mentioned in other posts)</p> <ol> <li>I've made sure the the *.a file is included in the <em>Link Binary With Library</em> . </li> <li>Tried to change C++ Language Dialect and C++ Standard Library to Compiler Default. </li> </ol> <p>More info:</p> <ol> <li>The files are in the project folder. </li> <li>I'm using an iPhone 4S v.6.1.3 and the project's deployment target is iOS 6.1. </li> </ol>
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    1. COIs the .a file you are linking to libmyTrekSDK_armv7.a? If so, it looks like there's another lib it needs before it (maybe the Accelerate.framework)... Also try link the ExternalAccessory.framework
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    2. CO@jjv360 you just saved my day!
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      1. USBrian
 

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