Variant A: Traditional variant to create shared libraries on AIX, but with runtime linking

aixrtl-traditional (text/plain), 1.14 KB, created by Michael Haubenwallner (RETIRED) on 2011-01-21 14:08:16 UTC

Variant A:
 *) Create the shared object libNAME.so.X with '-G' linker flag.
 *) Pack libNAME.so.X into libNAME.a
Install result in filesystem:
   archive library:   libNAME.a
Useability results:
 ++ Traditional "AIX-style" shared library.
 ++ Saves build time with libtool (single object file) and diskspace.
 ++ Multiple sonames are accomplished because the shared object's name in the
    archive providing the symbols found at linktime is recorded into the
	resulting binary for runtime.
 ++ Using dlopen() is possible.
 ++ Static linking is possible.
 -- Need special tweaks to merge multiple sonames into the archive.
 -- Using dlopen() requires special coded object-name along with RTLD_MEMBER,
    libtool does not know them yet.
 -- Need special flags to link statically, libtool does not know them yet.
 -- Can contain undefined symbols.
 -- Is not automatically loaded at runtime when not *referenced* at linktime.
 -- When linking with /immediate/path/libNAME.a, the /immediate/path is
    recorded into the resulting binary, and runpath search is not used for
	this shared object.
 -- Linker has to read the whole shared object to collect the symbols.