Bug 278210 – dev-util/nvidia-cuda-*: CUDA does not support GCC 4.4 and crashes during compile (error: inline function ‘int __signbit(double)’ cannot be declared weak), please modify the Ebuilds

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Some stupid real name 2009-07-17 21:52:22 UTC]

The CUDA team at nVidia says that it will take them time to add support for GCC 4.4. At the moment, if you try to compile any of their products using GCC 4.4 the compiler complains about these errors:

error: inline function ‘int __signbit(double)’ cannot be declared weak

and tons of look-alikes. Could the ebuild be modified so that GCC 4.3 is used instead of GCC 4.4?

Reproducible: Always

Steps to Reproduce:
1. Emerge any of the CUDA ebuilds using GCC 4.4
2. Errors show up.

Actual Results:  
error: inline function ‘int __signbit(double)’ cannot be declared weak

Expected Results:  
Clean compile

For response from nVidia please go here:

http://forums.nvidia.com/index.php?showtopic=99139

[Comment 1 Michal Januszewski (RETIRED) 2009-07-18 21:12:20 UTC]

I have just modified the nvidia-cuda-sdk ebuilds so that they require <=gcc-4.3.  I will also add a warning about this to nvidia-cuda-toolkit.

[Comment 2 Michal Januszewski (RETIRED) 2009-07-19 00:12:49 UTC]

Fixed in CVS -- added a warning about GCC 4.4 not being supported by the current CUDA toolkit releases.

[Comment 3 Michal Januszewski (RETIRED) 2009-07-19 00:13:18 UTC]

Closing the bug.