cuda/nvcc using specific gcc version

[Chris Knorowski]

I just came across a problem when compiling that i haven't come across so I wanted to add the solution to the listserv.

cuda toolkit doesn't support gcc >4.4,  but many OS ship with 4.5 and greater now. To set the compiler to work properly follow these steps (assuming you have already installed gcc-4.4):

Look for CUDA_NVCC_FLAGS in ccmake or cmake-gui. 

Then add -ccbin;gcc-4.4 

Notes: The semi-colon is the argument separator.  

The -ccbin argument tells NVCC that you are going to specify the host compiler it should use. 

See the help output from NVCC (nvcc --help). 

Chris

[Joshua A. Anderson]

Is this really necessary? The CUDA 4.1 release notes explicitly lists gcc 4.5 support for Fedora 14 and Ubuntu 11.04.
--------
Joshua A. Anderson, Ph.D.
Chemical Engineering Department, University of Michigan

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[Rastko Sknepnek]

I have successfully compiled HOOMD with CUDA 4.1 and gcc 4.6.3 on Fedora
16. All I needed to do was to change line 80 in file "host_config.h" in
CUDA's include directory to read

#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 6)

I know this is not the cleanest way to do it, but it works, and I had no
problem compiling and running HOOMD.

Rastko

[Chris Knorowski]

I had cuda 4.0 installed, sorry I should have been more explicit.

Chris

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Christopher Knorowski

Iowa State Physics Department