“/usr/bin/ld: cannot find -lboost_python-mt” error when installing pycuda 2011.2.2

Question

I am installing pycuda2011.2.2 on ubuntu 11.10, but can't complete it. When i do pycuda-2011.2.2 $ make -j 4

I get this error:

/usr/bin/ld: cannot find -lboost_python-mt    ,
/usr/bin/ld: cannot find -lcuda

I got 1 exact problem match in google search and solution as well :

 $ sudo ln -s /usr/lib/libboost_python-mt-py26 /usr/lib/libboost_python-mt

But booooom, My problem doesn't vanish.

It makes me wonder that why there are no relavant results in google search, as if only I have this problem. What is wrong ? Any help is appreciated.

Thanks,

Answer 1

There are two libraries you seem to be missing, which you need to install first.

Boost.Python

This is provided by libboost-python and ``. Or as these instructions say, to install this and some of the other prerequisites (which you may or may not already have, based on your error messages), run:

sudo apt-get install build-essential python-dev python-setuptools libboost-python-dev libboost-thread-dev -y

(I wouldn't advise following all the instructions on that page to the letter from beginning to end, though, as they're not written with Ubuntu 11.10 in mind and you don't need, and probably don't want, to set your system up to use an older compiler than is provided officially for it.)

CUDA

If you have already downloaded CUDA from Nvidia's website and installed it, then you just need to specify where:

./configure.py --cuda-root=/where/ever/you/installed/cuda

(See pycuda's generic instructions page for details.)

Before doing that, you may want to either start over from scratch or run make distclean (or make clean if make distclean is not recognized).

If you haven't yet downloaded and installed CUDA, you can do that at Nvidia's website. Specifically, on this page, grab the 32-bit or 64-bit version of the CUDA toolkit for Ubuntu 11.04 (that's the closest to your system that's available, and will probably work). If you're unsure if you have the 32-bit or 64-bit version of Ubuntu installed, run uname -m. If it says x86_64, you have the 64-bit version; otherwise you have the 32-bit version. Also grab the development drivers and SDK.

Quick links (32-bit): Toolkit Drivers SDK
Quick links (64-bit): Toolkit Drivers SDK

Answer 2

Eliah is on point about the -lcuda fix. You might also add the location of your cuda lib directory to your LD_LIBRARY_PATH.

As for the libboost-python problem, re-run the ./configure command from pycuda's generic instructions and replace --boost-python-libname=boost_python-mt with --boost-python-libname=boost_python-mt-py26.

Answer 3

problem solved. I found answer in this thread: http://forums.nvidia.com/index.php?showtopic=224718&st=0#entry1413660

Answer 4

I also ran into this problem, but on Ubuntu 12.04. I had a solution similar to max beckett's answer but instead of replacing "--boost-python-libname=boost_python-mt" with "--boost-python-libname=boost_python-mt-py26" it was "--boost-python-libname=boost_python-mt-py27" (note that "26" changed to "27" depending on the boost version you have)

Check what boost you have: ls /usr/lib/libboost_python*

This was changed in the call to ./configure making the final call:

./configure.py --cuda-root=/usr/local/cuda --cudadrv-lib-dir=/usr/lib --boost-inc-dir=/usr/include --boost-lib-dir=/usr/lib --boost-python-libname=boost_python-mt-py27 --boost-thread-libname=boost_thread-mt --no-use-shipped-boost

If you had already run the ./configure, you'll need to delete ./siteconf.py