Path: utzoo!attcan!uunet!zephyr.ens.tek.com!uw-beaver!mit-eddie!bloom-beacon!morgan.COM!jordan
From: jordan@morgan.COM (Jordan Hayes)
Newsgroups: comp.windows.x
Subject: Re: SUMMARY ld.so __XtInherit not found
Message-ID: <9011151225.AA14906@s6.Morgan.COM>
Date: 15 Nov 90 12:25:36 GMT
References: <9011131740.AA24472@theopolis.orl.mmc.com>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: Morgan Stanley, & Co., Inc. / New York City, NY
Lines: 49


	When I run a X program that I wrote I get the error ld.so
	symbol not found __XtInherit

[ Should this go into FAQ? ]

Here's what is happening.  There is a kludge in libXt to get Sun shared
libraries to work, which involves this __XtInherit business.  The
reason for it is that you can't share a function that is both called
and compared -- _XtInherit is the only function that I know of in libXt
that does this.

	i.e.,

	if (wc->manager_class.translations == (XtTranslations)_XtInherit)

The trick is to find some function that is *guaranteed* to be called in
an application and put the definition of _XtInherit into the same .o
file ... XtToolkitInitialize is the right choice for this, since
(theoretically) it should be called before any of the other Intrinsics
functions, thus ensuring that _XtInherit will get referenced, and thus,
loaded.

Bottom line: one of two things is happening:

	1) You aren't calling XtToolkitInitialize() anywhere.

		-- uil in motif 1.1 has this problem

		-- Solution: make sure you call XtToolkitInitialize();
		   all of the standard *Initialize() functions do this,
		   so unless you are doing something before initializing
		   the Intrinsics, you should be okay.

	2) You don't *need* to call XtToolkitInitialize() in your program.
	   This can happen if you are writing only in Xlib, or using a
	   toolkit that is not Xt-intrinsics based.

		-- XView doesn't use the Intrinsics, for example

		-- Solution: take the library -lXt out of your link command.

-----

The non-solution of linking -Bstatic "works" because this is an
artifact of shared libraries.  Don't bother -- one of the other two
ways above shold work.

/jordan