Find out glibc version a binary needs

[probonopd]

It would be cool if we could have a function to find out what glibc version is needed to run the contents of a particular AppDir.

Something along the lines of

https://github.com/AppImage/AppImages/blob/f92f77b928239528a9cc4ddad651635b4f616ce9/functions.sh#L137

find . -name *.so -or -name *.so.* -or -type f -executable  -exec strings {} \; | grep ^GLIBC_2 | sed s/GLIBC_//g | sort --version-sort | uniq | tail -n 1

but in libelfutil.

[probonopd]

I would want to use this in appimagetool to throw at least a warning if the glibc version needed to run is higher than the one shipped by the currently oldest still-supported Ubuntu LTS release.

[TheAssassin]

This is an ELF library. It doesn't do anything AppImage related, it's just providing an interface to ELF files.

Can you describe what you need in terms of ELF file handling? Then, this might be implemented here, and consumed by other applications.

[probonopd]

I want to find out which version of glibc an application (and all the libraries it loads) needs in order to run.

This is not AppImage specific at all.

To make it even more generic, replace "glibc" with $library.

[TheAssassin]

I'll rename the issue then. Thanks for the quick response.