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Asked: 2026-06-02T03:16:45+00:00

I am building a redistrbutable .so file. However when my users try to use

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I am building a redistrbutable .so file.

However when my users try to use it they get the dreaded /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.9' not found error.

Doing an objdump, it seems its this particular symbol in my binary that is causing the issue:
_ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l@@GLIBCXX_3.4.9

How do i tell my gcc/g++ to compile/link against an older version of GLIBXX so that my users dont get this error?

Or is the only way out of this conundrum to install a separate older version of linux which has an GLIBXX?

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  1. Editorial Team

    How do i tell my gcc/g++ to compile/link against an older version of GLIBXX so that my users dont get this error?

    There is no way to do that. Your only choices are:

    1. build with older g++ version, or
    2. link libstdc++.a statically into your shared library, and hide its symbols (this may also have licensing implications, check with your lawyer).
    3. package your version of libstdc++.so.6 together with your library, and ask users who have an older version to arrange to pick up your newer version instead (also has licensing implications, but I believe these are easier to satisfy).
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