# Install from sources on ubuntu 18.04.05 - spi3.3dev . Erlang? **URL:** \ **Category:** Support, Help & Resources\ **Created:** [November 22, 2020, 11:09am UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668 "2020-11-22T11:09:21Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![nlb](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/nlb/32/997_2.png) [@nlb](https://in-thread.sonic-pi.net/u/nlb)\ **Post date:** [November 22, 2020, 11:09am UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668/1 "2020-11-22T11:09:21Z")
Hi, On this grey sunday, i give a try to install the latest spi version on ubuntu 18.04.05. i follow this doc : [https://github.com/sonic-pi-net/sonic-pi/blob/main/BUILD-LINUX.md](https://github.com/sonic-pi-net/sonic-pi/blob/main/BUILD-LINUX.md) We need to have a erlang version \> 21. So how to get this information ? ```ruby nlb@devbox:~/audio/spi3.3dev/app/gui/qt$ erl --version Erlang/OTP 24 [DEVELOPMENT] [erts-11.1] [source-8ef1bc22b9] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1] [jit] Eshell V11.1 (abort with ^G) 1> ``` So do i have the necessary version of Erlang ? What is the OTP number ? When executing `./lnux-prebuild.sh --build`, I get this error : ```ruby ./linux-prebuild.sh --build Warning: Unix build scripts are still a work in progress! Building server external dependencies... -- Aubio Builder -- Configuring done -- Generating done -- Build files have been written to: /home/nlb/audio/spi3.3dev/app/gui/qt/external/build Building sp_midi... [12%] Performing build step for 'sp_midi' [11%] Building CXX object CMakeFiles/libsp_midi.dir/src/sp_midi.cpp.o In file included from /home/nlb/audio/spi3.3dev/app/gui/qt/external/sp_midi/src/sp_midi.cpp:27:0: /home/nlb/audio/spi3.3dev/app/gui/qt/external/sp_midi/src/sp_midi.h:3:10: fatal error: erl_nif.h: Aucun fichier ou dossier de ce type #include ^ ~~~~~~~~~~ compilation terminated. CMakeFiles/libsp_midi.dir/build.make:65: recipe for target 'CMakeFiles/libsp_midi.dir/src/sp_midi.cpp.o' failed make[6]: *** [CMakeFiles/libsp_midi.dir/src/sp_midi.cpp.o] Error 1 CMakeFiles/Makefile2:78: recipe for target 'CMakeFiles/libsp_midi.dir/all' failed make[5]: *** [CMakeFiles/libsp_midi.dir/all] Error 2 Makefile:86: recipe for target 'all' failed make[4]: *** [all] Error 2 CMakeFiles/sp_midi.dir/build.make:111: recipe for target 'sp_midi-prefix/src/sp_midi-stamp/sp_midi-build' failed make[3]: *** [sp_midi-prefix/src/sp_midi-stamp/sp_midi-build] Error 2 CMakeFiles/Makefile2:170: recipe for target 'CMakeFiles/sp_midi.dir/all' failed make[2]: *** [CMakeFiles/sp_midi.dir/all] Error 2 CMakeFiles/Makefile2:177: recipe for target 'CMakeFiles/sp_midi.dir/rule' failed make[1]: *** [CMakeFiles/sp_midi.dir/rule] Error 2 Makefile:157: recipe for target 'sp_midi' failed ``` So if someone has some tips, he / she is welcome ! Cheers ---
**Author:** ![nlb](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/nlb/32/997_2.png) [@nlb](https://in-thread.sonic-pi.net/u/nlb)\ **Post date:** [November 22, 2020, 11:26am UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668/2 "2020-11-22T11:26:44Z")
Well try to install Erlang this way : [https://tecadmin.net/install-erlang-on-ubuntu/](https://tecadmin.net/install-erlang-on-ubuntu/) adding a repo to my ubuntu and then install erlang. Edit : so now get this ```ruby ./linux-prebuild.sh --build Warning: Unix build scripts are still a work in progress! Building server external dependencies... -- Aubio Builder -- Configuring done -- Generating done -- Build files have been written to: /home/nlb/audio/spi3.3dev/app/gui/qt/external/build Building sp_midi... [12%] Performing build step for 'sp_midi' [11%] Building CXX object CMakeFiles/libsp_midi.dir/src/sp_midi.cpp.o [22%] Building CXX object CMakeFiles/libsp_midi.dir/src/midiin.cpp.o [33%] Building CXX object CMakeFiles/libsp_midi.dir/src/midiout.cpp.o [44%] Building CXX object CMakeFiles/libsp_midi.dir/src/midicommon.cpp.o [55%] Building CXX object CMakeFiles/libsp_midi.dir/src/midisendprocessor.cpp.o [66%] Building CXX object CMakeFiles/libsp_midi.dir/src/utils.cpp.o [77%] Building CXX object CMakeFiles/libsp_midi.dir/JuceLibraryCode/include_juce_core.cpp.o [88%] Building CXX object CMakeFiles/libsp_midi.dir/JuceLibraryCode/include_juce_events.cpp.o [100%] Linking CXX shared library libsp_midi.so /usr/bin/c++ -fPIC -std=c++14 -shared -Wl,-soname,libsp_midi.so -o libsp_midi.so CMakeFiles/libsp_midi.dir/src/sp_midi.cpp.o CMakeFiles/libsp_midi.dir/src/midiin.cpp.o CMakeFiles/libsp_midi.dir/src/midiout.cpp.o CMakeFiles/libsp_midi.dir/src/midicommon.cpp.o CMakeFiles/libsp_midi.dir/src/midisendprocessor.cpp.o CMakeFiles/libsp_midi.dir/src/utils.cpp.o CMakeFiles/libsp_midi.dir/JuceLibraryCode/include_juce_core.cpp.o CMakeFiles/libsp_midi.dir/JuceLibraryCode/include_juce_events.cpp.o -lpthread -lasound -ldl -lrtmidi /usr/bin/ld : ne peut trouver -lrtmidi collect2: error: ld returned 1 exit status CMakeFiles/libsp_midi.dir/build.make:192: recipe for target 'libsp_midi.so' failed make[6]: *** [libsp_midi.so] Error 1 CMakeFiles/Makefile2:78: recipe for target 'CMakeFiles/libsp_midi.dir/all' failed make[5]: *** [CMakeFiles/libsp_midi.dir/all] Error 2 Makefile:86: recipe for target 'all' failed make[4]: *** [all] Error 2 CMakeFiles/sp_midi.dir/build.make:111: recipe for target 'sp_midi-prefix/src/sp_midi-stamp/sp_midi-build' failed make[3]: *** [sp_midi-prefix/src/sp_midi-stamp/sp_midi-build] Error 2 CMakeFiles/Makefile2:170: recipe for target 'CMakeFiles/sp_midi.dir/all' failed make[2]: *** [CMakeFiles/sp_midi.dir/all] Error 2 CMakeFiles/Makefile2:177: recipe for target 'CMakeFiles/sp_midi.dir/rule' failed make[1]: *** [CMakeFiles/sp_midi.dir/rule] Error 2 Makefile:157: recipe for target 'sp_midi' failed make: *** [sp_midi] Error 2 ``` an idea ? a way to go ? Cheers ---
**Author:** ![robin.newman](https://avatars.discourse-cdn.com/v4/letter/r/76d3ee/32.png) [@robin.newman](https://in-thread.sonic-pi.net/u/robin.newman)\ **Post date:** [November 22, 2020, 3:26pm UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668/3 "2020-11-22T15:26:55Z")
At present the CMakeLists.txt file in sp\_midi is not consistent for building on linux. There are two solutions. It can be altered to use the included rt-midi code in Sonic Pi, or it can be altered to use librtmidi-dev which you need to install as a package. using sudo apt install librtmidi-dev In this latter case, you need to look at the CMakeLists.txt lines 26, and 27 in the latest commit to that file commit [b02cae1](https://github.com/sonic-pi-net/sonic-pi/commit/b02cae1d5f126430f23b8ff278cbe3709c0c109f) ```ruby include_directories( ${PROJECT_SOURCE_DIR}/external_libs/spdlog-0.11.0/include JuceLibraryCode JuceLibraryCode/modules ${PROJECT_SOURCE_DIR}/external_libs/cxxopts ${PROJECT_SOURCE_DIR}/external_libs) #include_directories(${PROJECT_SOURCE_DIR}/external_libs/spdlog-0.11.0/include JuceLibraryCode JuceLibraryCode/modules ${PROJECT_SOURCE_DIR}/external_libs/cxxopts) ``` Simply swap the comment around, ie comment the first line and uncomment the second. Also install the librtmidi-dev package. That will give a file that will build on linux but NOT on Mac or Windows. There is a fuller solution that adds extra code and switches to build all versions from internal code within Sonic Pi. There are pr’s submitted for this, but there are still problems with the operation of sp\_midi on linux builds. You will find that midi works, but crashes whenever you add or remove midi sources, after generating a huge number of midi ports. A solution is being investigated. For the moment you run the line `@mod_sound_studio.reset_erlang` which will restart the system. I have not built a .deb for 3.3dev on linux yet for this reason. ---
**Author:** ![nlb](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/nlb/32/997_2.png) [@nlb](https://in-thread.sonic-pi.net/u/nlb)\ **Post date:** [November 22, 2020, 4:06pm UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668/4 "2020-11-22T16:06:50Z")
Oh my god ! ![image](https://europe1.discourse-cdn.com/flex017/uploads/sonic_pi/original/2X/b/bce4c5970bcd56eda8149960241cb7ada19d3601.png) Thanks a lot @robin.newman for these explanations and so it works !! what i did including the change on line 26 / 27 as you mentionned. ```bash cd spi3.3dev/ 2009 cd app/gui/qt/ 2010 sudo apt install librtmidi-dev 2011 nano external/sp_midi/CMakeLists.txt 2012 vim external/sp_midi/CMakeLists.txt 2013 chmod u+x linux-prebuild.sh linux-config.sh 2014 ./linux-prebuild.sh --build-aubio 2015 cd .. 2016 cd bin/ 2017 ./sonic-pi 2018 cd .. 2019 cd app/gui/qt/ 2020 ./linux-config.sh 2021 cd build/ 2022 cmake --build 2023 cmake --build . 2024 cd .. 2025 ./bin/sonic-pi ``` Ok so i gonna test midi without removing midi devices. By the way, i don’t understand your sentence. Where do i have to execute that command if i meet trouble ? > [@robin.newman](#): > > For the moment you run the line > `@mod_sound_studio.reset_erlang` > which will restart the system. Again thanks ! ---
**Author:** ![nlb](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/nlb/32/997_2.png) [@nlb](https://in-thread.sonic-pi.net/u/nlb)\ **Post date:** [November 22, 2020, 4:16pm UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668/5 "2020-11-22T16:16:24Z")
well the midi path seems to be a bit long… ![image](https://europe1.discourse-cdn.com/flex017/uploads/sonic_pi/original/2X/d/de93fee9e7d40af688ed39fdf30ab94be81d06eb.png) may i open an issue on github or the issue is known ? I do understand this is a wip version. the midi in and out are quite weird. ![image](https://europe1.discourse-cdn.com/flex017/uploads/sonic_pi/original/2X/9/906d8d522750cbfc17728e02d9cce7d7db6d023c.png) ---
**Author:** ![robin.newman](https://avatars.discourse-cdn.com/v4/letter/r/76d3ee/32.png) [@robin.newman](https://in-thread.sonic-pi.net/u/robin.newman)\ **Post date:** [November 22, 2020, 5:14pm UTC](https://in-thread.sonic-pi.net/t/install-from-sources-on-ubuntu-18-04-05-spi3-3dev-erlang/4668/6 "2020-11-22T17:14:50Z")
you run it from Sonic Pi in a buffer. EDIT yes the midi port-names are a bit weird. I have raised this already, on the core group. One thing that helps is that `use_midi_defaults port:` autocompletes available ports, so it can save you some typing. Do try plugging in a midi device and see what happens. then run the `@mod_sound_studio.reset_erlang` from a buffer to get it going again. Takes a few seconds.