Re: [RFC] pre-c89 in libltdl

[Gary V. Vaughan]

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Bob Friesenhahn wrote:
| On Tue, 20 Apr 2004, Gary V. Vaughan wrote:
|>Except that I am pretty sure libltdl will choke if you link 2 libraries
|>that each use it :-(
|
|
| I assume that this is only an issue if the application uses
| "preloaded" static modules using libltdl APIs.  Applications are not
| required to use the preloaded modules feature and its use is easily
| avoided (couple lines of code).  The application I maintain does not
| use it.

That is one issue.  But my main concern is just a gut feeling that with
nothing being tested in a multi-client scenario, libltdl will likely
barf when subjected to that kind of usage pattern.  I need it to work
like that for m4 (libsnprintfv uses libltdl, and m4 uses libsnprintfv
and libltdl again) so I'll fix it before long.

| The preloaded modules implementation likely assumes that if an
| application uses preloaded modules that it will not want to
| dynamically load other modules.  If so, that would be a poor
| assumption and a serious drawback.

No, you can preload some modules, and lt_dlopen will first search the
preopened list, and then move to other loaders if that fails.  Again, m4
preloads the modules it needs for m4-1.4 compatibility, but allows dynamic
loading of additional modules too.

Cheers,
        Gary.
- --
Gary V. Vaughan      ())_.  address@hidden,gnu.org}
Research Scientist   ( '/   http://tkd.kicks-ass.net
GNU Hacker           / )=   http://www.gnu.org/software/libtool
Technical Author   `(_~)_   http://sources.redhat.com/autobook
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