Hi Jim,
Thanks for your response to my query.
No, I don't have the option to re-compile the library (say libxyz.so) and this is a black box to me being a 3rd party library package already compiled for my platform. This library using an older version of libstdc++.so.5; however my platform currently has libstdc++.so.6 (as well as libstdc++.so.5 co-existing) and the g++ compiler by default uses libstdc++.so.6 to link any code compiled on my platform (however gcc picks up libstdc++.so.5 by default).

Hence compiling a program which also uses libxyz.so through g++ is creating an undesired scenario by linking to some function calls using libstdc++.so.6 (by default) and some function calls residing into the library libxyz.so also is linked to my program as their API is called but those API's function definition has already linked to libstdc++.so.5

Hence I get an executable which has function calls linking to two versions of libstdc++.so. This creates problem while execution and dumps code.

All I need is a way to override the library selection behavior by the compiler/linker so that I can choose to link to a particular version of my choice at the link time.

I essentially want to link all my programs to libstdc++.so.5 and NOT with libstdc++.so.6

I tried "ldconfig" utility to change behavior by following (as a root):

Code:

# ldconfig -p > ldconf.conf

The file "ldconf.conf" thus produced had libstdc++.so.6 listed just prior to libstdc++.so.5; so I swapped their positions and did the following:

Code:

# ldconfig -f ldconf.conf

I received errors like (didn't work):

Code:

# ldconfig -f ldconf.conf
...
...
ldconfig: > /usr/lib64/libtag.so.1 is not a known library type
ldconfig: > /usr/lib64/libsysfs.so.2 is not a known library type
ldconfig: > /usr/lib64/libstdc++.so.5 is not a known library type
ldconfig: > /usr/lib/libstdc++.so.5 is not a known library type
ldconfig: > /usr/lib64/libstdc++.so.6 is not a known library type
ldconfig: > /usr/lib/libstdc++.so.6 is not a known library type
ldconfig: > /usr/lib/libstdc++-libc6.2-2.so.3 is not a known library type
ldconfig: > /usr/lib64/libstartup-notification-1.so.0 is not a known library type
ldconfig: > /usr/lib64/libsss_idmap.so.0 is not a known library type
ldconfig: > /usr/lib64/libssl3.so is not a known library type
...
...
ldconfig: > /lib64/ld64.so.1 is not a known library type
ldconfig: > /lib/ld.so.1 is not a known library type
ldconfig: Can't create temporary cache file /etc/ld.so.cache~: Permission denied