Faiss: how to Compile Faiss using static MKL

[wangsouc]

i try to use static MKL, like this:

BLASLDFLAGS= \
    $(MKLROOT)/lib/libmkl_intel_lp64.a  \
    $(MKLROOT)/lib/libmkl_intel_thread.a \
    $(MKLROOT)/lib/libmkl_core.a  \
    -lpthread -lrt -ldl 

but something wrong, like below, awk for help!

/home/users/wangsijiang01/.jumbo/opt/gcc48/bin/g++ -o tests/demo_ivfpq_indexing -fPIC -m64 -Wall -g -O3  -msse4 -mpopcnt -fopenmp -Wno-sign-compare -Dnullptr=NULL -Doverride= -fopenmp -I/home/users/wangsijiang01/bc_out/baidu/third-party/mkl/output/include tests/demo_ivfpq_indexing.cpp libfaiss.a -g -fPIC  -fopenmp /home/users/wangsijiang01/bc_out/baidu/third-party/mkl/output/lib/libmkl_intel_lp64.a /home/users/wangsijiang01/bc_out/baidu/third-party/mkl/output/lib/libmkl_intel_thread.a /home/users/wangsijiang01/bc_out/baidu/third-party/mkl/output/lib/libmkl_core.a -lpthread -lrt -ldl
/home/users/wangsijiang01/bc_out/baidu/third-party/mkl/output/lib/libmkl_intel_thread.a(sorgqr_par.o): In function `mkl_lapack_sorgqr':
sorgqr_omp_gen.f:(.text+0x3f7): undefined reference to `__kmpc_global_thread_num'
sorgqr_omp_gen.f:(.text+0x460): undefined reference to `__kmpc_ok_to_fork'

[mdouze]

Hi

Setting MKL flags is a frustrating process of trial and errors. Please post here if you manage to fix this compile error, we will incorporate it in the documentation.

[bakercp]

For what it's worth, this tool helped me get me get static linking working on OSX

https://software.intel.com/en-us/articles/intel-mkl-link-line-advisor

[wangsouc]

successful compile MKL in stitac link, using conf blow:

CFLAGS=-fPIC -m64 -Wall -g -O3  -msse4 -mpopcnt -fopenmp -Wno-sign-compare -Dnullptr=NULL -Doverride= -fopenmp \
 -DMKL_ILP64 -m64 -I${MKLROOT}/include

BLASLDFLAGS= -Wl,--start-group ${MKLROOT}/lib/libmkl_intel_ilp64.a ${MKLROOT}/lib/libmkl_gnu_thread.a \
${MKLROOT}/lib/libmkl_core.a -Wl,--end-group -lgomp -lpthread -lm -ldl

BLASCFLAGS=-DFINTEGER=long

[mdouze]

Thanks @wangsouc!
Closing issue.