[R-pkg-devel] Linking with OpenBLAS complains lapacke not found

Brian,

This is the code I am using to linking with BLAS using MKL or OpenBLAS

#MKL
if [ -n "$MKLROOT" ] && [ -d "$MKLROOT" ]; then
     echo "mkl_dir directory exists!"
     echo "Great... continue set-up"
     source ${MKLROOT}/bin/mklvars.sh intel64
     DEFINE_BLAS_LIBS_CMAKE="-DBLAS_LIBRARIES='-L${MKLROOT}/lib -Wl,-rpath,${MKLROOT}/lib -lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread -lm -ldl'"
     #DEFINE_BLAS_LIBS_CMAKE="-DBLAS_LIBRARIES='-L${MKLROOT}/lib\ -Wl,-rpath,${MKLROOT}/lib\ -lmkl_intel_lp64\ -lmkl_sequential\ -lmkl_core\ -lpthread\ -lm\ -ldl'"
     XFLAG="-DBLA_VENDOR=Intel"
else
     echo "MKL not found, trying to compile and use OpenBLAS"
     XFLAG="-DBLA_VENDOR=Open"
     USE_OPENBLAS='true'
fi

# openblas
if [ "true" == "$USE_OPENBLAS" ]
then
     if pkg-config --exists openblas
     then
         _LOCATION=`pkg-config --variable=libdir openblas`
         echo "OpenBLAS FOUND in [$_LOCATION]"
     else
         if [ "$BUILD_DEPENDENCIES" == "true" ]
         then
             echo "Building OpenBLAS..."
             cd $TMPDIR
             wget https://github.com/xianyi/OpenBLAS/archive/v0.3.3.tar.gz -O - | tar -zx
             cd OpenBLAS-0.3.3
             $MAKE -j  >/dev/null|| $MAKE || { echo 'OpenBLAS installation failed' ; exit 1; }
             $MAKE install PREFIX=$PREFIX
             export CPATH=$CPATH:$PREFIX/include
         else
             echo "####################"
             echo "OpenBLAS NOT FOUND"
             echo "Please download it from: https://github.com/xianyi/OpenBLAS/releases"
             echo "After installing it, set the proper PKG_CONFIG_PATH variable"
             echo ""
             err=1
         fi
     fi
fi


It works great but when OpenBLAS is using, my application cannot find lapacke library.



?On 9/8/19, 2:28 PM, "Brian G. Peterson" <brian at braverock.com> wrote:

     On Sun, 2019-09-08 at 10:04 +0000, Sameh M. Abdulah wrote:

     > I am linking my package against openblas but it complains that
     > lapacke is not found which I need for the installation.
     >
     > I have another alternative to linking against MKL but I cannot find
     > it using MKLROOT variable on CRAN servers.

     
     It isn't entirely clear what your question is, but shouldn't you just
     be linking to the BLAS and leave the choice of BLAS to the individual
     installation?  In most cases you should probably not be statically
     linking to the BLAS.
     
     Here is an old paper by Dirk with more information that might help you
     sort it out.
     
     https://cran.r-project.org/web/packages/gcbd/vignettes/gcbd.pdf
     
     Regards,
     
     Brian
     
     --
     Brian G. Peterson
     ph: +1.773.459.4973
     im: bgpbraverock