Salt, Supercollider and libbela.so problem

rkylberg

I just received a Salt module.

When I try to run any of the Supercollider code examples (e.g. 6-pattern-control) it fails with the following message:

May 26 18:59:59 bela systemd[1]: Stopping Run Bela at boot...sclang: error while loading shared libraries: libbela.so: cannot open shared object file: No such file or directorymake: *** [runide] Error 127

If I ssh into the module then I find it in ~/Bela/lib:

root@bela:~/Bela/lib# ls -la
total 1340
drwxr-xr-x 2 501 staff 4096 May 26 16:41 .
drwxr-xr-x 15 root root 4096 May 14 14:02 ..
-rw------- 1 501 staff 872448 May 14 13:55 .monitor_vim.swp
-rw-r--r-- 1 501 staff 300494 Mar 26 12:39 libNE10.a
-rwxr-xr-x 1 root root 94864 May 26 16:41 libbela.so
-rw-r--r-- 1 501 staff 88326 Mar 26 12:39 libmathneon.a

Any ideas on how to get Supercollider working on Salt?

Thanks!

rkylberg

here's a little more detail on resolving lib dependencies for sclang:

root@bela:/usr/local/lib# ldd /usr/local/bin/sclang
linux-vdso.so.1 (0xbef3a000)
libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0xb6f9d000)
libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6f8a000)
libcobalt.so.2 => /usr/xenomai/lib/libcobalt.so.2 (0xb6f64000)
libmodechk.so.0 => /usr/xenomai/lib/libmodechk.so.0 (0xb6f53000)
librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0xb6f3d000)
libbela.so => not found
libasound.so.2 => /usr/lib/arm-linux-gnueabihf/libasound.so.2 (0xb6e88000)
libsndfile.so.1 => /usr/lib/arm-linux-gnueabihf/libsndfile.so.1 (0xb6e23000)
libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0xb6d17000)
libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0xb6c9f000)
libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0xb6c76000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6b88000)
/lib/ld-linux-armhf.so.3 (0xb6fc1000)
libFLAC.so.8 => /usr/lib/arm-linux-gnueabihf/libFLAC.so.8 (0xb6b3b000)
libogg.so.0 => /usr/lib/arm-linux-gnueabihf/libogg.so.0 (0xb6b2e000)
libvorbis.so.0 => /usr/lib/arm-linux-gnueabihf/libvorbis.so.0 (0xb6afc000)
libvorbisenc.so.2 => /usr/lib/arm-linux-gnueabihf/libvorbisenc.so.2 (0xb6a6a000)

rkylberg

k, got it sorted. Adding the following in case anyone else has trouble getting Supercollider running on Salt.

Short answer: run ldconfig

Explanation:

Determine what libs Bela is configured for:

root@bela:~/Bela/lib# cat /etc/ld.so.conf
include /etc/ld.so.conf.d/*.conf

k, it's configured to include paths from a directory of conf files. See which ones:

root@bela:~/Bela/lib# ls /etc/ld.so.conf.d
arm-linux-gnueabihf.conf bela.conf libc.conf xenomai.conf

That bela.conf file looks promising. What is in it?

root@bela:~/Bela/lib# cat /etc/ld.so.conf.d/bela.conf
/root/Bela/lib

Ah, cool, that's where libbela.so is. So why isn't it being resolved? Let's retry letting the system know:

root@bela:~/Bela/lib# ldconfig

Did it work?

root@bela:~/Bela/lib# ldd /usr/local/bin/sclang
linux-vdso.so.1 (0xbef79000)
libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0xb6ed1000)
libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6ebe000)
libcobalt.so.2 => /usr/xenomai/lib/libcobalt.so.2 (0xb6e98000)
libmodechk.so.0 => /usr/xenomai/lib/libmodechk.so.0 (0xb6e87000)
librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0xb6e71000)
libbela.so => /root/Bela/lib/libbela.so (0xb6e4d000)
libasound.so.2 => /usr/lib/arm-linux-gnueabihf/libasound.so.2 (0xb6d98000)
libsndfile.so.1 => /usr/lib/arm-linux-gnueabihf/libsndfile.so.1 (0xb6d33000)
libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0xb6c27000)
libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0xb6baf000)
libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0xb6b86000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0xb6a98000)
/lib/ld-linux-armhf.so.3 (0xb6ef5000)
libprussdrv.so => /usr/local/lib/libprussdrv.so (0xb6a85000)
libFLAC.so.8 => /usr/lib/arm-linux-gnueabihf/libFLAC.so.8 (0xb6a38000)
libogg.so.0 => /usr/lib/arm-linux-gnueabihf/libogg.so.0 (0xb6a2b000)
libvorbis.so.0 => /usr/lib/arm-linux-gnueabihf/libvorbis.so.0 (0xb69f9000)
libvorbisenc.so.2 => /usr/lib/arm-linux-gnueabihf/libvorbisenc.so.2 (0xb6967000)

Yay, libbela.so => /root/Bela/lib/libbela.so (0xb6e4d000)

Wonder why this wasn't set up originally. Oh well, let's get back to the fun :-)

giuliomoro

Yeah it just needed ldconfig. Sorry. Those images are built more or less by hand, so that was left out after updating the code on the board.