On Linux (including MATLAB online), 'GLIBCXX_3.4.29' not found

[DavidRConnell]

Igraph is compiled against stdlibc++.so.6.0.29 but MATLAB ships with stdlibc++.so.6.028. I've attempted to compile igraph with the older stdlibc but have not been able to get it to build. This can be fixed by either manually providing MATLAB with the newer lib or removing MATLAB's version to ensure the system version is found by the linker. This solutions, however, are 1. inconvenient to the end-user and 2. can't be done in certain environment (github runner, MATLAB online). Ideally this should be solved outside of manual intervention. It might be possible to get MATLAB to use the system one regardless but it seems MATLAB overrides the runpath to ensure it's packaged library are given preference.