c++ - 编译 Caffe 时出错

Question

我正在尝试在 Ubuntu 16.04 中使用 OpenBLAS 编译 Caffe。我已经使用 ma​​ke NO_AFFINITY=1 USE_OPENMP=1 下载并编译了 OpenBLAS OpenBLAS 编译正常，所有测试也运行

OpenBLAS build complete. (BLAS CBLAS LAPACK LAPACKE)

  OS               ... Linux             
  Architecture     ... x86_64               
  BINARY           ... 64bit                 
  C compiler       ... GCC  (command line : gcc)
  Fortran compiler ... GFORTRAN  (command line : gfortran)
  Library Name     ... libopenblas_sandybridgep-r0.2.20.dev.a (Multi threaded; Max num-threads is 4)

 Use OpenMP in the multithreading. Because of ignoring OPENBLAS_NUM_THREADS and GOTO_NUM_THREADS flags, 
 you should use OMP_NUM_THREADS environment variable to control the number of threads.

但是在 Caffe 安装中与 OpenBLAS 库链接会出现以下错误

Linking CXX executable upgrade_net_proto_binary /opt/OpenBLAS/lib/libopenblas.so: undefined reference to `GOMP_parallel@GOMP_4.0' collect2: error: ld returned 1 exit status tools/CMakeFiles/upgrade_net_proto_binary.dir/build.make:129: recipe for target 'tools/upgrade_net_proto_binary' failed make[2]: * [tools/upgrade_net_proto_binary] Error 1 CMakeFiles/Makefile2:403: recipe for target 'tools/CMakeFiles/upgrade_net_proto_binary.dir/all' failed make[1]: * [tools/CMakeFiles/upgrade_net_proto_binary.dir/all] Error 2

Answer 1

最有可能的原因是您链接到已编译的 OpenBLAS，而不是安装它并链接到安装。运行 make 后，您应该运行 make install PREFIX=/path/to/install/OpenBLAS，然后您应该链接到已安装的版本。