There is an error when I try to install magenta but I have no idea how to solve this problem

Hello I have a question.

When I try to install magenta pip install magenta-gpu

But I got error

Failed building wheel for python-rtmidi

and

Command “/home/jinsol/anaconda2/bin/python2.7 -u -c “import setuptools, tokenize;file=‘/tmp/pip-build-GPLeG_/python-rtmidi/setup.py’;f=getattr(tokenize, ‘open’, open)(file);code=f.read().replace(‘\r\n’, ‘\n’);f.close();exec(compile(code, file, ‘exec’))” install --record /tmp/pip-XEAotx-record/install-record.txt --single-version-externally-managed --compile” failed with error code 1 in /tmp/pip-build-GPLeG_/python-rtmidi/

And I also try to install development environment. python setup.py develop

But I got error again

src/RtMidi.cpp:1101:10: fatal error: alsa/asoundlib.h: No such file or directory #include <alsa/asoundlib.h> ^~~~~~~~~~~~~~~~~~ compilation terminated. error: Setup script exited with error: command ‘/home/jinsol/anaconda2/bin/x86_64-conda_cos6-linux-gnu-cc’ failed with exit status 1

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I installed python-rtmidi package and there is ‘alsa/asoundlib.h’ in /usr/include/ directory. I tried a lot of things but I have no idea how to solve this problem. Anybody help me?

[adarob]

Can you try running this command before installing:

sudo apt-get -y install build-essential libasound2-dev libjack-dev libav-tools

[KinWaiCheuk]

I have also solved it. For my case, my gcc version was 4.3 which is too old for the python-rtmidi library. So I need to install gcc 6.3. After installing, you need to run the following line to check what is the name for the gcc that you install dpkg -l | grep gcc | awk '{print $2}' And it output the followings

gcc gcc-5 gcc-5-base:amd64 gcc-6 gcc-6-base:amd64 gcc-7-base:amd64 gcc-8-base:amd64 libcaca0:amd64 libgcc-5-dev:amd64 libgcc-6-dev:amd64 libgcc1:amd64

So, even I have installed gcc 6.3, the package name is actually gcc-6, then I run the following line to switch my default gcc to 6 (The last word in the following line is the version you want to change to).

ls -la /usr/bin/ | grep -oP "[\S]*(gcc|g\+\+)(-[a-z]+)*[\s]" | xargs bash -c 'for link in ${@:1}; do sudo ln -s -f "/usr/bin/${link}-${0}" "/usr/bin/${link}"; done' 6

I found most of my answer in this stack post https://askubuntu.com/questions/26498/how-to-choose-the-default-gcc-and-g-version