[tbox-l] Shared object versioning

[Bernard N. <be...@ze...>]

Hello,

The AIXTools README mentions a new approach to shared object versioning, but
does not give much details.

Shared libraries such as openssl or expat are in archives, e.g.
/opt/freeware/lib/libexpat.a contains libexpat.so.0 (actually 2
libexpat.so.0, one 32 bit and one 64 bit, as show by ar -t -X 32_64)

On Linux, the standard versioning approach is to use different shared
library names for incompatible versions (e.g. libexpat.so.0 and
libexpat.so.1); and when you link a program, you select a specific version
by using a symbolic link that points to desired version.
How does this work on AIX? If I have libexpat.so.0 and libexpat.so.1 in the
same /opt/freeware/lib/libexpat.a, how can I tell the linker to pick a
specific version? Is there any example?

Thanks,
Bernard