423. Openblas on Debian Wheezy

Update 23 May 2013: the url for the openblas tarball has been updated and a tab has been removed from the lapack url.

Note that the links to the openblas file tends to die after a while, so you might have to download it manually.

Original post:
I need more modular posts. I've covered how to build openblas several times before, but I need a simple post I can use as a reference. So here it is:

openblas

sudo mkdir /opt/openblas
sudo chown ${USER} /opt/openblas
cd ~/tmp
wget http://github.com/xianyi/OpenBLAS/tarball/v0.2.6

tar xvf v0.2.6
cd xianyi-OpenBLAS-87b4d0c

wget http://www.netlib.org/lapack/lapack-3.4.1.tgz
make all BINARY=64 CC=/usr/bin/gcc FC=/usr/bin/gfortran USE_THREAD=0 INTERFACE64=1 1> make.log 2>make.err
make PREFIX=/opt/openblas install

nm: '/lib/libpthread.so*': No such file
make -j 2 -f Makefile.install install
make[1]: Entering directory `/home/me/tmp/xianyi-OpenBLAS-87b4d0c'
Generating openblas_config.h in /opt/openblas/include
Generating f77blas.h in /opt/openblas/include
Generating cblas.h in /opt/openblas/include
Copying LAPACKE header files to /opt/openblas/lib
Copy the static library to /opt/openblas/lib
cp: cannot stat `libopenblas_opteronp-r0.2.6.a': No such file or directory
make[1]: *** [install] Error 1
make[1]: Leaving directory `/home/me/tmp/xianyi-OpenBLAS-87b4d0c'
make: *** [install] Error 2

Don't worry about the errors -- as long as you have libopenblas_PROCESSOR_rX.X.X.so, you're fine.

cp lib*.* /opt/openblas/lib

add

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/openblas/lib

to your ~/.bashrc, and/or add

/opt/openblas/lib

to your /etc/ld.so.conf