Cannot run in Linux

[mjablecnik]

Hello, in Linux Mint 19.3 Tricia I cannot run your application:

./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by ./Open_Sound_Meter-v0.3.1-x86_64.AppImage)
./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /tmp/.mount_Open_S7j6hzR/lib/libpulse.so.0)
./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /tmp/.mount_Open_S7j6hzR/lib/libpulsecommon-13.99.so)
./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by /tmp/.mount_Open_S7j6hzR/lib/libsystemd.so.0)
./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.30' not found (required by /tmp/.mount_Open_S7j6hzR/lib/libsystemd.so.0)
./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /tmp/.mount_Open_S7j6hzR/lib/libsndfile.so.1)
./Open_Sound_Meter-v0.3.1-x86_64.AppImage: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /tmp/.mount_Open_S7j6hzR/lib/libFLAC.so.8)

[Soundblender]

Same issue on my computer, I'm also running Mint 19.3 Tricia.

[nettings]

Won't solve your problem, but if you want to know up to which version your libm defines those symbols, you can run

strings /lib/libm.so.6 | grep ^GLIB | sort 

Here is an interesting recipe to figure out if it really needs that recent a libc: https://www.generacodice.com/en/articolo/646393/Linking-against-an-old-version-of-libc-to-provide-greater-application-coverage

And here's what I get:

roman:/local/build/osm # objdump -T /lib/libc.so.6 | grep __libc_single_threaded
00228c30 g    DO .bss	00000001  GLIBC_2.32  __libc_single_threaded

Makes me guess that making this backwards-compatible would be non-trivial. You'd have to dig into the threading functions next... @mjablecnik, maybe trying to build it on Mint 19.3 is an easier option....