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- Newsgroups: comp.sys.next.programmer
- Path: sparky!uunet!psinntp!juliet!news
- From: drew@fnbc.com (Drew Davidson)
- Subject: Re: rld: undefined symbols
- Message-ID: <1992Nov23.231427.19933@fnbc.com>
- Sender: news@fnbc.com
- Reply-To: drew@fnbc.com
- Organization: First National Bank Of Chicago, Chicago IL, USA
- References: <1992Nov23.163544.247@object.com>
- Date: Mon, 23 Nov 92 23:14:27 GMT
- Lines: 96
-
- In article <1992Nov23.163544.247@object.com> bbum@object.com (Bill Bumgarner)
- writes:
- > In article <1992Nov21.090743.8818@monu6.cc.monash.edu.au>
- > ede978e@monu6.cc.monash.edu.au (Robert D. Nicholson) writes:
- > >
- > > I am writing a Workspace contents inspector.
- > >
- > > Upon trying to load the bundle I get the following
- > > message on the console.
- > >
- > > /robert/Apps/RIBInspector.bundle/RIBInspector
- > >
- > > Nov 21 19:59:45 steffi WM[148]: rld(): Undefined symbols:
- > >
- > > My Bundle's nib has a customView is this legal with bundles?
- > >
- >
- > Assuming that by saying customView, you mean that you have a custom subclass
- of
- > the view class-- in this case, probably a subclass of N3DMovieCamera-- yes,
- > this is allowable within a bundle. The source files (whatever.[hm]) should
- > just be added to the bundle project like any other source files.
- >
- > That rld() message is totally useless-- and not uncommon. There is an
- annoying
- > bug in rld such that it doesn't dump a complete message to console. It DOES
- > work under gdb-- so you might try attaching gdb to the WM process:
- >
- > gdb /usr/lib/NextStep/Workspace.app/WM.app/WM
- > attach 148
- >
- > << go inspect a .rib file here and it should give you a useful message >>
- >
- > In the best case, there is simply some function/class being referenced that
- you
- > have forgotten to include in your code or have mis-typed it (any compiler
- > warnings when you compile the code?).
- >
- > In the worst case, the undefined symbol is N3DCamera itself because WM.app
- > doesn't include libMedia-- looking at WM.app/WM via otool -l, one gets:
- >
- > Load command 6
- > cmd LC_LOADFVMLIB
- > cmdsize 56
- > name /usr/shlib/libIndexing_s.A.shlib (offset 20)
- > minor version 1
- > header addr 0x0a000000
- > Load command 7
- > cmd LC_LOADFVMLIB
- > cmdsize 52
- > name /usr/shlib/libNeXT_s.C.shlib (offset 20)
- > minor version 57
- > header addr 0x06000000
- > Load command 8
- > cmd LC_LOADFVMLIB
- > cmdsize 48
- > name /usr/shlib/libsys_s.B.shlib (offset 20)
- > minor version 55
- > header addr 0x05000000
- > Load command 9
- > cmd LC_SYMTAB
- > cmdsize 24
- > symoff 524288
- > nsyms 5106
- > stroff 585560
- > strsize 121640
- >
- >
- > Which seems to indicate that WM.app doesn't have any kind of a reference to
- > libMedia_... which would leave the 3Dkit (and anything else in that lib--
- live
- > video, as well) inaccessible...
- >
- > One COULD potentially edit the load commands....
- >
- > --
- > Bill Bumgarner <bbum@object.com> | "The devils of truth...
- > Objective Technologies, Inc. | steal the souls of the free." -- NIN
- > --
- > Bill Bumgarner <bbum@object.com> | "The devils of truth...
-
- This brings up a really sticky question that I've been troubled by recently.
- How in the world do you put an object that you use a lot in two IB Palettes, WM
- Inspectors, Preferences modules, or whatever? If you link against it in both
- bundles, one will cause rld() to choke at load time, so you cannot use both
- bundles at the same time. I've got a pretty good library to objects that I
- don't feel like renaming each time they get put into a bundle that *may* have a
- conflict somewhere down the line.
-
- --
- +--------------------------------+-------------------------------------------+
- | Drew Davidson | "Never ask a programmer if he'll have |
- | Software Guy | another cup of coffee because it's |
- | First National Bank of Chicago | nobody's damn business how much he's |
- | drew@fnbc.com (NeXTmail) | already had!" - me |
- +--------------------------------+-------------------------------------------+
-