[CMake] Find.CUDA for /usr/local/cuda/lib64

[Darren Weber]

The Find.CUDA module returns 32bit libs on a 64bit platform, is this a bug
or what?

For example, in OpenMM, it returns:

/usr/local/cuda/lib/libcublas.so
/usr/local/cuda/lib/libcufft.so

On an Ubuntu 10.04 amd64 platform with a 64bit install of the nVidia driver
and software, i.e.:

$ ls /usr/local/cuda/lib/
libcublas.so@         libcudart.so.3@       libcufft.so.3.2.16*
libcusparse.so@
libcublas.so.3@       libcudart.so.3.2.16*  libcurand.so@
libcusparse.so.3@
libcublas.so.3.2.16*  libcufft.so@          libcurand.so.3@
libcusparse.so.3.2.16*
libcudart.so@         libcufft.so.3@        libcurand.so.3.2.16*
[ dweber at weberT61 /data/CUDA ]$ ls /usr/local/cuda/lib64
libcublas.so@         libcudart.so.3@       libcufft.so.3.2.16*
libcusparse.so@
libcublas.so.3@       libcudart.so.3.2.16*  libcurand.so@
libcusparse.so.3@
libcublas.so.3.2.16*  libcufft.so@          libcurand.so.3@
libcusparse.so.3.2.16*
libcudart.so@         libcufft.so.3@        libcurand.so.3.2.16*
$ uname -m && cat /etc/*release
x86_64
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04.2 LTS"


Hope you can help to modify Find.CUDA so it will get the 64bit libs (in
preference to the 32bit libs).

Thanks,
Darren
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