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twelve17 / openalpr-ios

Xcode Framework for the openalpr library
GNU General Public License v3.0
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c++ linker errors? #5

Closed schlu closed 9 years ago

schlu commented 9 years ago

I have been trying to get a proof of concept working for a couple days.

I have been able to compile the project just fine (after I fix the hard coded build paths). but when I take the libopenalpr-xcode.a (and other libraries) into my project I start to get linker errors on the c++ standard library.

I have been able to get a cv::Mat object created, but when I instantiate an Alpr instance I get the following linker errors.

Undefined symbols for architecture arm64:
  "_jpeg_free_small", referenced from:
      _free_pool in opencv2(jmemmgr.o)
      _self_destruct in opencv2(jmemmgr.o)
  "_jpeg_mem_available", referenced from:
      _realize_virt_arrays in opencv2(jmemmgr.o)
  "_jpeg_free_large", referenced from:
      _free_pool in opencv2(jmemmgr.o)
  "_jpeg_open_backing_store", referenced from:
      _realize_virt_arrays in opencv2(jmemmgr.o)
  "_jpeg_get_large", referenced from:
      _alloc_large in opencv2(jmemmgr.o)
      _alloc_barray in opencv2(jmemmgr.o)
  "_jpeg_mem_term", referenced from:
      _jinit_memory_mgr in opencv2(jmemmgr.o)
      _self_destruct in opencv2(jmemmgr.o)
  "_jpeg_mem_init", referenced from:
      _jinit_memory_mgr in opencv2(jmemmgr.o)
  "_jpeg_get_small", referenced from:
      _jinit_memory_mgr in opencv2(jmemmgr.o)
      _alloc_small in opencv2(jmemmgr.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have verified the headers paths and library paths are correct by setting them incorrectly and getting errors importing alpr.h. Any clues what I am doing wrong?

schlu commented 9 years ago

I will close this as I needed to compile and link libjpeg.