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Date: Tue, 28 Jun 1994 17:36:05 -0700
From: "Andrew K. Yu" <andrew@postgres.Berkeley.EDU>
Message-Id: <199406290036.RAA17491@eden.CS.Berkeley.EDU>
To: aataneja@cs.mtu.edu
Subject: Re:  link failed in load of ADT file ..
Cc: postgres@postgres.Berkeley.EDU
Resent-To: postgres-redist@postgres.Berkeley.EDU
Resent-Date: Tue, 28 Jun 94 17:36:04 -0700
Resent-XMts: smtp

	
> I wonder if having substantially large code for input & output
> functions for a defined data type emp_DT  (just like circle)
> causes problems ...??

shouldn't. I've seen object files of sizes in megabyte range being loaded in
successfully.

> WARN:Jun 28 18:36:45:Load of file /resrch2/postgres/bruce/emp.o failed: link fai
	
Without info on the version of postgres and the platform you're running on,
I can't tell you much except the following general observations:

1. Top causes for failure:
	- object file cannot be opened because the postgres backend does not
	  have access to or permission on the file. (You'll get a "stat failed"
	  instead of "link failed" message, however.)
	- object file not compiled correctly (eg. need -c and/or special
	  options for a specific platform)
	- object file contain symbols defined in postgres backend already
	  (on version 4.2/Ultrix, you get a "multiply defined" message)
	- /tmp does not have enough space for the intermediate relocated
	  object (for versions <= 4.1)
	- you had a bad day

2. If you're still using version 4.1 or early, I'd strongly recommend you
   upgrade to version 4.2 since the dynamic loading mechanism has been 
   revamped. (And I haven't heard any complaint about it not working on
   4.2, yet!) In 4.2, the dynamic loader uses the OS's native dynamic
   loading/share library facilities except for Ultrix (which uses my dynamic
   loading package). 
	
-andrew

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