Once upon a time I had many problems with OpenGL/GLU problems in my FreeSurfer build. Ultimately the problem was that the version of GLU installed with Mesa package was not really compatible with the compiler that I was using. After straightening this problem out using the configure option --with-cuda allowed me to build with CUDA 9.1 with no problems.

What is your setup? Compilers? GPU?

________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Markus.Mertens@evkb.de Markus.Mertens@evkb.de Sent: Monday, February 5, 2018 7:41 AM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] How to compile FreeSurfer with CUDA?

Hello Freesurfer experts,

I am trying to compile FreeSurfer to make use of its CUDA capabilities. The precompiled version does not run on my system. But when I try to compile FreeSurfer I get the following error:

# ./configure --with-pkgs-dir=/usr/local/centos6-x86_64-packages --enable-fermi-gpu ... configure: Getting OpenGL info... checking GL directory... gl directory is /usr/include checking windows.h usability... no checking windows.h presence... no checking for windows.h... no checking for OpenGL library... no configure: error: FATAL: GL not found, but needed for tcltkapps XawPlusapps kwwapps wxwapps. Use --with-gl-dir=... to specify

But OpenGL is installed:

# ll /usr/lib64/libGL.so* lrwxrwxrwx 1 root root 14 Jan 15 23:35 /usr/lib64/libGL.so -> libGL.so.1.2.0* lrwxrwxrwx 1 root root 14 Jan 15 23:35 /usr/lib64/libGL.so.1 -> libGL.so.1.2.0* -rwxr-xr-x 1 root root 452752 Jan 15 23:37 /usr/lib64/libGL.so.1.2.0* # ll /usr/include/GL/gl.h -rw-r--r-- 1 root root 80615 Jan 15 23:35 /usr/include/GL/gl.h #

The configure script did not ask for CUDA, yet. But CUDA is also installed in /usr/lib64:

# ll /usr/lib64/libcuda* -rw-r--r-- 1 root root 556000 Jan 13 2017 /usr/lib64/libcudadevrt.a lrwxrwxrwx 1 root root 16 Jan 13 2017 /usr/lib64/libcudart.so -> libcudart.so.8.0* lrwxrwxrwx 1 root root 19 Jan 13 2017 /usr/lib64/libcudart.so.8.0 -> libcudart.so.8.0.61* -rwxr-xr-x 1 root root 415432 Jan 13 2017 /usr/lib64/libcudart.so.8.0.61* -rw-r--r-- 1 root root 775162 Jan 13 2017 /usr/lib64/libcudart_static.a #

Adding the option "--with-gl-dir=/usr/lib64" to the configure script does not help. What else could I try?

Regards,

Markus

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