CODEWITHSUNDEEP
iphonec++objective-cxcode4objective-c++
Jorge Zambrano
Jorge Zambrano

Reputation: 1

How to use Library Eigen on iPhone 4

We are developing an application for iphone 4 in xcode4 where we get an error when compiling for the device:

{standard input}: unknown: Undefined local symbol LC85 {standard input}: unknown: Undefined local symbol LC86 Command / Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1

We are using the gcc 4.2 and Eigen packages such as SVD, Array, QR, LU, Core, Cholesky, etc. However when compiling for the iPhone Simulator 4 gives no error.

As could be solved?

Upvotes: 0

Views: 550

Answers (1)

ejang
ejang

Reputation: 4062

Eigen's functions are vectorized by default (uses clever properties of vectors and matrices to avoid nested for-loops and such).

the #define EIGEN_DONT_VECTORIZE tells Eigen ... not to vectorize. Apple's compiler used to be gcc-4.2, which does not support vectorization. I thought the new LLVM compiler should support vectorization.

Upvotes: 1

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