Undefined symbols for architecture x86_64:
 "_jpeg_free_large", referenced from:
   _free_pool in opencv2(jmemmgr.o)
 "_jpeg_free_small", referenced from:
   _free_pool in opencv2(jmemmgr.o)
   _self_destruct in opencv2(jmemmgr.o)
 "_jpeg_get_large", referenced from:
   _alloc_large in opencv2(jmemmgr.o)
   _alloc_barray in opencv2(jmemmgr.o)
 "_jpeg_get_small", referenced from:
   _jinit_memory_mgr in opencv2(jmemmgr.o)
   _alloc_small in opencv2(jmemmgr.o)
 "_jpeg_mem_available", referenced from:
   _realize_virt_arrays in opencv2(jmemmgr.o)
 "_jpeg_mem_init", referenced from:
   _jinit_memory_mgr in opencv2(jmemmgr.o)
 "_jpeg_mem_term", referenced from:
   _jinit_memory_mgr in opencv2(jmemmgr.o)
   _self_destruct in opencv2(jmemmgr.o)
 "_jpeg_open_backing_store", referenced from:
   _realize_virt_arrays in opencv2(jmemmgr.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

/opt/libjpeg-turbo/lib/libjpeg.a