[SOLVED] - Understanding libraries and other pieces

[warron.french]

I wrote an RPM recently and discovered something weird.

During the yum localinstall mycustom.rpm execution, I observed that there were several errors, which displayed Requires: lines.

I had Requires lines for several libraries (*.so.*) files; which using the find command some of them I found, and others I did not.

For the libraries I did find, I had references to things like:

Code: Select all

libc.so.1(GLIBC_2_3)(64-bit)

This is an example, possibly a poor one (sorry); however, it is good enough for my question.

The question I am trying to learn an answer to is; the reference to "GLIBC_2_3" ... that is a class reference from within the library, correct?

[chemal]

https://sourceware.org/glibc/wiki/FAQ#W ... need_it.3F

https://www.berrange.com/posts/2011/01/ ... t-library/

[warron.french]

Sorry chemal, I still am not positive if I understand.

Is the part inside the first set of () called a symbol?

I am looking to understand from an academic level, so that I can use the term appropriately when I run up against another problem.

[chemal]

The whole thing is called "symbol versioning". That's what you put into your search engine to find links like the two given above.

The symbol in your example is a group symbol. This is explained in detail in the second link.

[warron.french]

Chemal, you rock!

Thanks for the feedback.