Re: GDB version information not available

On Fri, 24 May 2013 00:38:19 +0200, Tejas Chopra wrote:
> gdb: /lib/libz.so.1: no version information available (required by gdb)

This is unrelated to GDB.  It seems you have compiled the binary on
a different system than you run the binary.  Compatibility is only backwards,
not forwards.  You can run on newer system a binary that was built on older
system but not vice versa.

You can compare on both systems ZLIB_* versioning tags:
	readelf -s /lib/libz.so.1 | grep ZLIB_


> Now, my system is Fedora 12 and my suspicion is that GDB compiles
> assuming a library version that is higher than what my system has.

/lib64/libz.so.1: no version information available
https://bugzilla.redhat.com/show_bug.cgi?id=557651
Fedora 14 had the version tag added.


> I wanted to know where inside the GDB source code could I get information
> about version information.

Not in GDB, GDB just asks for a symbol name (without the ZLIB_* version).
Linker adds the ZLIB_* requirement if system zlib has such version tag.


Jan