• Audun Wilhelmsen <seronor gmail.com> Feb 07 2008
• Derek Parnell <derek psych.ward> Feb 07 2008

Audun Wilhelmsen <seronor gmail.com> writes:

I'm having some strange problems compiling a project. I'm currently using
Poseidon to write and compile code. At one point (after including OpenGL
extensions from Derelict) I just couldn't get it to compile anymore. So I tried
using bud from the command line, and poof! It worked. But then I thought I'd
make bud collect the obj files in a single directory, so I added the -odObjs
switch.. but that gave me a similar error as poseidon did. The error returned
is:

C:\D\Logos>bud main.d -Tmain.exe -odtest
OPTLINK (R) for Win32  Release 8.00.1
Copyright (C) Digital Mars 1989-2004  All rights reserved.
test\main.obj(main)
 Error 42: Symbol Undefined _D8derelict4util6loader13GenericLoader4loadMFAaZv
test\main.obj(main)
 Error 42: Symbol Undefined _D8derelict4util6loader13GenericLoader6unloadMFZv
test\sdl.obj(sdl)
 Error 42: Symbol Undefined _D8derelict4util6loader13GenericLoader5setupMFAaAaAa
PFC8derelict4util6loader9SharedLibZvAaZv
test\sdl.obj(sdl)
 Error 42: Symbol Undefined _D8derelict4util6loader16Derelict_GetProcFC8derelict
4util6loader9SharedLibAaZPv

Still, if I compile using:
bud main.d -Tmain.exe

It works perfectly. What is going on here?

Derek Parnell <derek psych.ward> writes:

On Thu, 07 Feb 2008 12:40:05 -0500, Audun Wilhelmsen wrote:

 But then I thought I'd make bud collect the obj files in a single directory,
 so I added the -odObjs switch.. but that gave me a similar error as poseidon
 did. The error returned is:
 
 C:\D\Logos>bud main.d -Tmain.exe -odtest
 OPTLINK (R) for Win32  Release 8.00.1
 Copyright (C) Digital Mars 1989-2004  All rights reserved.
 test\main.obj(main)
  Error 42: Symbol Undefined _D8derelict4util6loader13GenericLoader4loadMFAaZv
 test\main.obj(main)
  Error 42: Symbol Undefined _D8derelict4util6loader13GenericLoader6unloadMFZv
 test\sdl.obj(sdl)
  Error 42: Symbol Undefined
_D8derelict4util6loader13GenericLoader5setupMFAaAaAa
 PFC8derelict4util6loader9SharedLibZvAaZv
 test\sdl.obj(sdl)
  Error 42: Symbol Undefined
_D8derelict4util6loader16Derelict_GetProcFC8derelict
 4util6loader9SharedLibAaZPv
 
 Still, if I compile using:
 bud main.d -Tmain.exe
 
 It works perfectly. What is going on here?


I suspect it is trying to link old object files. Although the -od will pace
all the new object files into a single directory, it doesn't mean that the
linker will look there. 

Can you try a couple of things...

First try using the -clean -full switches. This will force all source to be
recompiled and it will remove the object files after a successful link. 

Secondly, if the problem still persists, use the -V switch to get a very
verbose output. I can use that output to see the actions it is taking and
have a better idea about what is going on.

Personally, I never use the -od switch as I don't care where the object
files are temporarily stored. However, if your source is in read-only
directories you still need to specify a writable work area for object files
using the -od switch. 

-- 
Derek Parnell
Melbourne, Australia
skype: derek.j.parnell