undefined reference to `cblas_*"

[wbtxd2004]

When I make all to compile caffe, I got this error:
.build_debug/lib/libcaffe.so: undefined reference to cblas_dasum' .build_debug/lib/libcaffe.so: undefined reference tocblas_dcopy'
.build_debug/lib/libcaffe.so: undefined reference to cblas_sdot' .build_debug/lib/libcaffe.so: undefined reference tocblas_dscal'
.build_debug/lib/libcaffe.so: undefined reference to cblas_sgemm' .build_debug/lib/libcaffe.so: undefined reference tocblas_dgemm'
.build_debug/lib/libcaffe.so: undefined reference to cblas_sgemv' .build_debug/lib/libcaffe.so: undefined reference tocblas_sscal'
.build_debug/lib/libcaffe.so: undefined reference to cblas_scopy' .build_debug/lib/libcaffe.so: undefined reference tocblas_saxpy'
.build_debug/lib/libcaffe.so: undefined reference to cblas_dgemv' .build_debug/lib/libcaffe.so: undefined reference tocblas_sasum'

I use mkl as BLAS. How to solve this problem?
Thanks!

[StevenLOL]

Do you have a "build" folder, once I got same problem when I build caffe in its own directory.

mkdir build
cd build
cmake ..
make

Please check this issue:

#2348

[wbtxd2004]

Thank you! I use your method and successful installed caffe.

[wincle]

I also have this problem, check your Makefile.config , Is there leave one space after BLAS := open ?delete the space after "open",then recompile it.

[vishwa15]

Thank you Wincle. It worked!!

[noldorj]

Hi. Were you able to solve this issue with Intel MKL ? I'm facing the same error.

[northeastsquare]

@noldorj , iset mkl not MKL, solve
BLAS := mkl

Custom (MKL/ATLAS/OpenBLAS) include and lib directories.

Leave commented to accept the defaults for your choice of BLAS

(which should work)!

BLAS_INCLUDE := /opt/intel/mkl/include/
BLAS_LIB := /opt/intel/mkl/lib/intel64/

[srbnghosh99]

I am finding this error message when I am trying to make.

CXX/LD -o .build_release/test/test_all.testbin src/caffe/test/test_caffe_main.cpp
.build_release/lib/libcaffe.so: undefined reference to cblas_sgemv' .build_release/lib/libcaffe.so: undefined reference to cblas_dgemm'
.build_release/lib/libcaffe.so: undefined reference to cblas_sscal' .build_release/lib/libcaffe.so: undefined reference to cblas_dgemv'
.build_release/lib/libcaffe.so: undefined reference to cblas_saxpy' .build_release/lib/libcaffe.so: undefined reference to cblas_ddot'
.build_release/lib/libcaffe.so: undefined reference to cblas_dasum' .build_release/lib/libcaffe.so: undefined reference to cblas_sgemm'
.build_release/lib/libcaffe.so: undefined reference to cblas_dscal' .build_release/lib/libcaffe.so: undefined reference to cblas_scopy'
.build_release/lib/libcaffe.so: undefined reference to cblas_sasum' .build_release/lib/libcaffe.so: undefined reference to cblas_daxpy'
.build_release/lib/libcaffe.so: undefined reference to cblas_dcopy' .build_release/lib/libcaffe.so: undefined reference to cblas_sdot'
collect2: error: ld returned 1 exit status
make: *** [.build_release/test/test_all.testbin] Error 1

[kviktor]

I had the same issue on Manjaro (I'm reporting here cause this is the first hit on Google), as far as I understood the issue was that the openblas library doesn't include all bindings (https://bugs.archlinux.org/task/66092) so I had to install https://aur.archlinux.org/packages/openblas-lapack/ instead.

git clone https://aur.archlinux.org/openblas-lapack.git
cd openblas-lapack
makepkg -si

With this I could build caffe.

[jmlago]

I had the same issue on Manjaro (I'm reporting here cause this is the first hit on Google), as far as I understood the issue was that the openblas library doesn't include all bindings (https://bugs.archlinux.org/task/66092) so I had to install https://aur.archlinux.org/packages/openblas-lapack/ instead.

git clone https://aur.archlinux.org/openblas-lapack.git
cd openblas-lapack
makepkg -si

With this I could build caffe.

Many thanks, installing openblas-lapack with yay, I was able to compile and install caffe in Manjaro without any problems