You are trying to compile the examples in the /usr/local directory.
The default user in the dealii docker image is the “dealii” user, and it does
not have write access to those directories. If you really want work inside the
docker image, you should copy the directory of the example(s) you want to
compile under /home/dealii and compile from there.
However, the usual way people use the docker image is to mount a local
directory into the image, e.g., calling
docker run -v $HOME:$HOME -t -i dealii/dealii:latest bash
and then building your examples/programs/etc. in a local directory under your
home folder path. In this way you use the image, without modifying its content,
and the build results are left in your home directory (in the host computer,
and not in the image, where the changes you make are discarded when you exit).
Best,
Luca.
> On 15 May 2020, at 11:44, Jack Urombo wrote:
>
>
>
> I have installed dealii on docker and when itry t run the examples i get the
> error below. What am i doing wrong?
>
>
>
> /usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/dealii-9.1.1-kbq6c5p67nir5zwpx5lbevwutndfivxz/share/deal.II/examples/step-6/CMakeFiles/CMakeTmp/testCCompiler.c
>
> try_compile() works only for enabled languages. Currently these are:
>
> C CXX
>
> See project() command to enable other languages.
> Call Stack (most recent call first):
> CMakeLists.txt:38 (PROJECT)
>
>
> -- Check for working C compiler: /usr/bin/cc -- broken
> CMake Error at
> /usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/cmake-3.14.4-7gmvmpryqyfj5m42vt5qj5tb27tw7un6/share/cmake-3.14/Modules/CMakeTestCCompiler.cmake:56
> (file):
> file failed to open for writing (No such file or directory):
>
>
> /usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/dealii-9.1.1-kbq6c5p67nir5zwpx5lbevwutndfivxz/share/deal.II/examples/step-6/CMakeFiles/CMakeError.log
> Call Stack (most recent call first):
> CMakeLists.txt:38 (PROJECT)
>
>
> CMake Error at
> /usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/cmake-3.14.4-7gmvmpryqyfj5m42vt5qj5tb27tw7un6/share/cmake-3.14/Modules/CMakeTestCCompiler.cmake:60
> (message):
> The C compiler
>
> "/usr/bin/cc"
>
> is not able to compile a simple test program.
>
> It fails with the following output:
>
>
>
>
>
> CMake will not be able to correctly generate this project.
> Call Stack (most recent call first):
> CMakeLists.txt:38 (PROJECT)
>
>
> -- Configuring incomplete, errors occurred!
> CMake Error: Cannot open file for write:
> /usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/dealii-9.1.1-kbq6c5p67nir5zwpx5lbevwutndfivxz/share/deal.II/examples/step-6/CMakeCache.txt.tmp
> CMake Error: : System Error: Permission denied
> CMake Error: Unable to open cache file for save.
> /usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/dealii-9.1.1-kbq6c5p67nir5zwpx5lbevwutndfivxz/share/deal.II/examples/step-6/CMakeCache.txt
> CMake Error: : System Error: Permission denied
> dealii@85f866bfa019:/usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/dealii-9.1.1-kbq6c5p67nir5zwpx5lbevwutndfivxz/share/deal.II/examples/step-6$
> ^C
> dealii@85f866bfa019:/usr/local/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/dealii-9.1.1-kbq6c5p67nir5zwpx5lbevwutndfivxz/share/deal.II/examples/step-6$
>
>
>
> --
> The deal.II project is located at http://www.dealii.org/
> For mailing list/forum options, see
> https://groups.google.com/d/forum/dealii?hl=en
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--
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