Rene,
this sounds like the new compiler does generate some new external
symbols, those should not be exported at all (by M$).
As you know MS assumes the user has to define all symbols he wants
to export with his source code. Since we have none (and didn't want
to introduce that) for the ROOT code) the BINEXPLIB utility was
provided. Its soul is to try to export ALL symbols the object
file defines (In fact this contradicts MS rules. I guess they
has introduced some external symbols which our utility picks to
export those it should not export). Very likely the structure of the
VC++ object module has been improved and changed. Now one
has to investigate this new stricture and adjust our utility .
I'd like some one sends me ASAP the full *.def file the BINDEXPLIB
generates from VC 6.0 compilation to adjust BINDEXPLIB.
The lines
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@4002a0000000000000
> > 00
sound like MS made all constants look like the external function
names (to save some space I guess and to avoid its duplicating
across subroutines). Very likely such pseudo-entry point can not be
exported across DLL's. I hope MS left some "flag" within its object
module and this way one can adjust our BINEXPLIB utility, but one
needs some investigation though.
May some one on list can provide further information on the
structure of the "new" object modules or can point me some
references unless I pick my own version of Visual C++ 6.0 (in fact
I am reluctant to pick the brand new versions of MS compilers).
Valery
On 30 Oct 98 at 11:33,
Rene Brun wrote:
> Hi Jonathan,
> We have found a spurious character in the Makefile for Windows. We
> are now in the process of releasing Root version 2.00/13. The
> version for WindowsNT/95 is already on our web site. Let me know
>
> Rene Brun
>
>
> Jonathan M. Gilligan wrote:
> >
> > There has been a little bit of traffic about troubles with ROOT and VC++
> > 6.0. I am now having trouble and would like some advice if anyone can help.
> > I have a DLL that has been working fine with ROOT when I compiled it with
> > VC++ 5, but since I upgraded to version 6, I get the following trouble
> > (under both NT 4.0 SP3 and '95):
> >
> > BINDEXPLIB seems to create references to symbols that the linker can't
> > resolve. Here is a session running nmake on the Root/test directory to
> > build Event.dll.
> >
> > Microsoft (R) Program Maintenance Utility Version 6.00.8168.0
> > Copyright (C) Microsoft Corp 1988-1998. All rights reserved.
> > outpu
> > t filename "libEvent.dll"; ignoring directive
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@4001a0000000000000
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@4002a0000000000000
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@4002c0000000000000
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@400380000000000000
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@4004c8000000000000
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@4@4004f0000000000000
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@8@3ff8a3d70a3d70a3d8
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@8@3ffbccccccccccccd0
> > 00
> > Event.exp : error LNK2001: unresolved external symbol
> > _real@8@3ffe99999999999998
> > 00
> > libEvent.dll : fatal error LNK1120: 15 unresolved externals
> > NMAKE : fatal error U1077: 'C:\PROGRA~1\MICROS~2\VC98\BIN\link.exe' :
> > return cod
> > e '0x460'
> > Stop.
> >
> > Thanks for any help anyone can shed on this problem.
> >
> > Jonathan Gilligan
>
=================================================================
Dr. Valeri Faine (Fine)
------------------- Phone: +1 516 344 7806
Brookhaven National Laboratory FAX : +1 516 344 4206
Bldg. 510A /STAR mailto:fine@bnl.gov
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Dr. Valery Fine Telex : 911621 dubna su
-----------
LCTA/Joint Inst.for Nuclear Res. Phone : +7 09621 6 40 80
141980 Dubna, Moscow region Fax : +7 09621 6 51 45
Russia mailto:fine@main1.jinr.dubna.su
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