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Mobeen
Asked: 2017-11-01 02:57:54 +0800 CST

How to change the package version in candidate?

  • 772

The output of command apt-cache policy as shown:

mobeen@VIP-Ubuntu:~$ apt-cache policy gcc
gcc:
  Installed: (none)
  Candidate: 4:7.2.0-1ubuntu1
  Version table:
     4:7.2.0-1ubuntu1 500
        500 http://kr.archive.ubuntu.com/ubuntu artful/main amd64 Packages


mobeen@VIP-Ubuntu:~$ apt-cache policy g++
    g++:
      Installed: (none)
      Candidate: 4:7.2.0-1ubuntu1
      Version table:
         4:7.2.0-1ubuntu1 500
            500 http://kr.archive.ubuntu.com/ubuntu artful/main amd64 Packages

To my understanding this gives information about some package, that which version is installed and in the candidate, it means which version is going to be installed.

What I want to do is basically installed CUDA 8.0, which automatically installs gcc, but because of candidate version of gcc is 7.2.0, it installs this version. However, this afterwards gives compatibility errors.

In summary: I need to install a gcc version less than 5.

I am trying to install torch using the method described here: link.

The error I get is:

In file included from /usr/local/cuda/include/cuda_runtime.h:78:0,
                 from <command-line>:0:
/usr/local/cuda/include/host_config.h:119:2: error: #error -- unsupported GNU version! gcc versions later than 5 are not supported!
 #error -- unsupported GNU version! gcc versions later than 5 are not supported!
  ^~~~~
In file included from /usr/local/cuda/include/cuda_runtime.h:78:0,
                 from <command-line>:0:
/usr/local/cuda/include/host_config.h:119:2: error: #error -- unsupported GNU version! gcc versions later than 5 are not supported!
 #error -- unsupported GNU version! gcc versions later than 5 are not supported!
  ^~~~~
In file included from /usr/local/cuda/include/cuda_runtime.h:78:0,
                 from <command-line>:0:
/usr/local/cuda/include/host_config.h:119:2: error: #error -- unsupported GNU version! gcc versions later than 5 are not supported!
 #error -- unsupported GNU version! gcc versions later than 5 are not supported!
  ^~~~~
In file included from /usr/local/cuda/include/cuda_runtime.h:78:0,
                 from <command-line>:0:
/usr/local/cuda/include/host_config.h:119:2: error: #error -- unsupported GNU version! gcc versions later than 5 are not supported!
 #error -- unsupported GNU version! gcc versions later than 5 are not supported!
  ^~~~~
CMake Error at THC_generated_THCSleep.cu.o.cmake:207 (message):
  Error generating
  /home/mobeen/torch/extra/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCSleep.cu.o


lib/THC/CMakeFiles/THC.dir/build.make:665: recipe for target 'lib/THC/CMakeFiles/THC.dir/THC_generated_THCSleep.cu.o' failed
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCSleep.cu.o] Error 1
make[2]: *** Waiting for unfinished jobs....
CMake Error at THC_generated_THCBlas.cu.o.cmake:207 (message):
  Error generating
  /home/mobeen/torch/extra/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCBlas.cu.o


lib/THC/CMakeFiles/THC.dir/build.make:476: recipe for target 'lib/THC/CMakeFiles/THC.dir/THC_generated_THCBlas.cu.o' failed
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCBlas.cu.o] Error 1
CMake Error at THC_generated_THCReduceApplyUtils.cu.o.cmake:207 (message):
  Error generating
  /home/mobeen/torch/extra/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCReduceApplyUtils.cu.o


lib/THC/CMakeFiles/THC.dir/build.make:286: recipe for target 'lib/THC/CMakeFiles/THC.dir/THC_generated_THCReduceApplyUtils.cu.o' failed
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCReduceApplyUtils.cu.o] Error 1
CMake Error at THC_generated_THCHalf.cu.o.cmake:207 (message):
  Error generating
  /home/mobeen/torch/extra/cutorch/build/lib/THC/CMakeFiles/THC.dir//./THC_generated_THCHalf.cu.o


lib/THC/CMakeFiles/THC.dir/build.make:2027: recipe for target 'lib/THC/CMakeFiles/THC.dir/THC_generated_THCHalf.cu.o' failed
make[2]: *** [lib/THC/CMakeFiles/THC.dir/THC_generated_THCHalf.cu.o] Error 1
CMakeFiles/Makefile2:172: recipe for target 'lib/THC/CMakeFiles/THC.dir/all' failed
make[1]: *** [lib/THC/CMakeFiles/THC.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

Error: Build error: Failed building.

I have installed gcc-4.8 using the command:

sudo apt install gcc-4.8

and then symlinked it by using the command:

sudo ln -s /usr/bin/gcc-4.8 /usr/local/cuda/bin/gcc
sudo ln -s /usr/bin/g++-4.8 /usr/local/cuda/bin/g++
sudo ldconfig

But still get the same error.

apt

2 Answers

  1. In the Ubuntu package system, gcc is a dependency package providing the default GNU C compiler.

    If you want a non-default compiler version, you can install it explicitly - for example gcc-4.8 is available on artful. You will need to enable the universe repository in your package sources.

    You will likely need to take other steps to make CUDA find the correct versions - for example, creating a /usr/local/cuda/bin directory and symbolically linking /usr/bin/gcc-4.8 to /usr/local/cuda/bin/gcc

    • 1

  2. In summary: I need to install a gcc version less than 5.

    GCC 4.8.5 is available in 17.10 from the package gcc-4.

    • 0