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Re: wish list for rsh
>>>>> "Brandon" == Brandon S Allbery KF8NH <firstname.lastname@example.org> writes:
Brandon> It's a sort-of-Unixized port of OS/2 shared libraries.
Brandon> So you need to use OS/2-style import files to link one
Brandon> shared library against another, linking goes much more
Brandon> easily if you have OS/2-style export files, and all
Brandon> symbols must be resolved at shared library build time,
Brandon> among other oddities compared to most Unixes.
Yuck. Initially I thought Win3.0 DLLs were a very good feature of
windows, but since they were ported to OS/2, and probably
AIX. However, since then I have learnt about shared libraries under
most versions of Unix ;-)
Brandon> Also, shared objects that work fine on every other system
Brandon> I've built them on, regardness of weirdness (such as the
Brandon> shared library version of netpbm from the libgr package),
Brandon> build on AIX but programs using them dump core on
Brandon> startup. I suspect this means static data in shared
Brandon> libraries behaves strangely. (I *hope* it doesn't use
Brandon> the OS/2 default of "static data is shared between
Brandon> processes using the shared library"...).
Brandon> In any case, the Cyrus SASL libraries refuse to build
Brandon> properly on AIX as distributed, and while I can get
Brandon> something (of unknown functionality) if I update it to
Brandon> use the latest libtool, you then have to use that same
Brandon> libtool version to link against SASL.
What version of libtool supports AIX?
Ok, I see the following in the libtool documentation:
Some platforms, such as AIX, do not even allow you this
flexibility. In order to build a shared library, it must be entirely
self-contained (that is, have references only to symbols that are
found in the .lo files or the specified -l libraries), and you need to
specify the -no-undefined flag. By default, libtool builds only static
libraries on these kinds of platforms.
not very good. Does AIX have any support for PAM (or similar)?
Brandon> | In the past I have heard about a GNU project under
Brandon> development from | GNU that will allow a static library
Brandon> to be read at runtime like a | shared library (for
Brandon> platforms without good shared library support), | do you
Brandon> think this would help? +--->8
Brandon> One can hope. I do wish IBM would implement
Brandon> Solaris/Linux-style shared libraries, though.
I think I might have stated that wrongly (although it was the
way I understood it at the time, so maybe I just cannot find
the reference again).
Anyway, from the libtool documentation at
"Libtool emulates -dlopen on static platforms by linking objects into
the program at compile time, and creating data structures that
represent the program's symbol table."
Brian May <email@example.com>