iOS add dlib to project, linker error

Question

I have this error while following this tutorial:

ld: warning: ignoring file /project/lib/libdlib.a, file was built for archive which is not the architecture being linked (arm64): /project/lib/libdlib.a
Undefined symbols for architecture arm64:
  "_cblas_dgemm", referenced from:
      dlib::blas_bindings::cblas_gemm(dlib::blas_bindings::CBLAS_ORDER, dlib::blas_bindings::CBLAS_TRANSPOSE, dlib::blas_bindings::CBLAS_TRANSPOSE, int, int, int, double, double const*, int, double const*, int, double, double*, int) in DlibWrapper.o
  "_dgesvd_", referenced from:
      dlib::lapack::binding::gesvd(char, char, long, long, double*, long, double*, double*, long, double*, long, double*, long) in DlibWrapper.o
  "_dgesdd_", referenced from:
      dlib::lapack::binding::gesdd(char, long, long, double*, long, double*, double*, long, double*, long, double*, long, long*) in DlibWrapper.o
  "_USER_ERROR__missing_dlib_all_source_cpp_file__OR__inconsistent_use_of_DEBUG_or_ENABLE_ASSERTS_preprocessor_directives", referenced from:
      _dlib_check_consistent_assert_usage in DlibWrapper.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

What can I do?

add Build Settings -> Architectures to Standard Architecture (armv7, armv7s, arm64). — Anbu.Karthik, Aug 10 '17 at 09:59
see this for ref : https://stackoverflow.com/questions/20926632/xcode-undefined-symbols-for-architecture-arm64-error — Anbu.Karthik, Aug 10 '17 at 10:05
@EvgeniyaTveritinova You can try with older version of dlib, where the flag -std=c++11 not required in Build settings ->other complier flag for dlib project. — The iCoder, Nov 21 '17 at 12:38

score 2 · Answer 1 · answered Nov 13 '18 at 08:23

2

add accelerate framework

for iOS and macOS platform, the framework include the symbols.

answered Nov 13 '18 at 08:23

andrewchan2022

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iOS add dlib to project, linker error

1 Answers1