#  CUDA incompatible with gcc version 

**URL:** <https://forums.developer.nvidia.com/t/cuda-incompatible-with-gcc-version/58566>\
**Category:** CUDA Setup and Installation\
**Created:** [February 26, 2018, 6:53pm UTC](https://forums.developer.nvidia.com/t/cuda-incompatible-with-gcc-version/58566 "2018-02-26T18:53:53Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![papatya2](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@papatya2](https://forums.developer.nvidia.com/u/papatya2)\
**Post date:** [February 26, 2018, 6:53pm UTC](https://forums.developer.nvidia.com/t/cuda-incompatible-with-gcc-version/58566/1 "2018-02-26T18:53:53Z")

</div>

```
$ apt policy gcc
gcc : Installed : 4:5.3.1-1ubuntu1
Candidate : 4:5.3.1-1ubuntu1
Version table :
*** 4:5.3.1-1ubuntu1 500
500 http://tr.achive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status

$ inxi -S
No command 'inxi' found

$ apt-apt-cache policy gcc-5
gcc-5:
Installed:5.4.0-6ubuntu1~16.04.9
Candidate:5.4.0-6ubuntu1~16.04.9
Version table:
*** 5.4.0-6ubuntu1~16.04.9 500
500 http://tr.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
100 /var/lib/dpkg/status
5.3.1-14ubuntu2 500
500 http://tr.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages

Cuda doesn't support GCC 5.4.0.

$ ./mnistCUDNN

cudnnGetVersion() : 7005 , CUDNN_VERSION from cudnn.h : (7005) (7.0.5)
Cuda failurer version : GCC 5.4.0
Error : unknown error
error_util.h:93
Aborting...

Ubuntu 16.04.9 : Ubuntu 5.4.0-6ubuntu1 : GCC 5.4.0
CUDA Toolkit 9.1
Python3.6.4

http://docs.nvidia.com/cuda/cuda-ins...n-guide-linux/

CUDA Toolkit 9.1 supports gcc5.3.1.

How will I make my gcc version correct ?

```

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<div class="post-metadata">

**Author:** ![jirak92](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@jirak92](https://forums.developer.nvidia.com/u/jirak92)\
**Post date:** [February 27, 2018, 1:03pm UTC](https://forums.developer.nvidia.com/t/cuda-incompatible-with-gcc-version/58566/2 "2018-02-27T13:03:31Z")

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Hi,  
just install the version of GCC which you need and then use link to it.

For example gcc 4.4:  
sudo apt install gcc-4.4  
sudo ln -s /usr/bin/gcc-4.4 /usr/local/cuda/bin/gcc

And then install your CUDA…

---

<div class="post-metadata">

**Author:** ![papatya2](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@papatya2](https://forums.developer.nvidia.com/u/papatya2)\
**Post date:** [February 27, 2018, 7:21pm UTC](https://forums.developer.nvidia.com/t/cuda-incompatible-with-gcc-version/58566/3 "2018-02-27T19:21:10Z")

</div>

```
I installed cuda again. I think cuda wasn't properly installed.
Updated some new files...
And then I installed nvidia 390.25 driver version for linux.
Then, it is running, Test pased, test is ok.

./mnistCUDNN
....
Test passed !

```