[Mingw-notify] [ mingw-Bugs-683455 ] Getting auto-import warnings even when explicit im/ex

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Bugs item #683455, was opened at 2003-02-09 16:18
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=102435&aid=683455&group_id=2435

Category: ld
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Johnny Willemsen (jwillemsen)
Assigned to: Danny Smith (dannysmith)
Summary: Getting auto-import warnings even when explicit im/ex

Initial Comment:
I am working on the ACE/TAO port to MingW (see 
www.cs.wustl.edu/~schmidt). I have setup a daily build 
that builds ACE/TAO daily with MinGW. The results of 
the build are available at 
http://doc.ece.uci.edu/scoreboard/

We do explict import and export using __declspec 
import/export. But we still get a few auto-import 
warnings. This is a class with 2 static members but we 
only get a warning on one of them, the other gave 
warnings before we did explicit import/export but now 
not anymore. When we disable auto import we still get 
these warnings.

I think we should be able to get rid of this warning, now 
we do explicit import/export.

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>Comment By: Johnny Willemsen (jwillemsen)
Date: 2003-03-19 08:10

Message:
Logged In: YES 
user_id=585332

We haven't been able to reproduce the problem yet in a small 
example. Can this be caused by the following which is done 
in the makefile structure of ACE?

  dlltool --export-all --output-def $(VSHDIR)$@.def --dllname 
@ \
    $(VSHOBJS1) \
  && mv $(VSHDIR)/$@.def $(VSHDIR)/$@.def.old \
  && sed 's/;.*$$//g' < $(VSHDIR)/$@.def.old > 
$(VSHDIR)/@.def \
  && $(SOLINK.cc) -Wl,--enable-auto-image-base -Wl,--out-
implib,$@.a \
    -shared -o $@ $(LDFLAGS) $(VSHDIR)/$@.def \
    $(VSHOBJS1) $(ACE_SHLIBS) $(LIBS)

The comments are stripped from the .def file. When we let 
the comment stay, we get a crash of ld. This is on the lines 
that have ... at the end of the line or are from a operator ==

From the .def file this are the things we have problems with
	_ZN14ACE_Time_Value4zeroE @ 1067 DATA ; 
ACE_Time_Value::zero
	_ZN14ACE_Time_Value8max_timeE @ 1068 
DATA ; ACE_Time_Value::max_time

Does anyone know something to do about this?

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Comment By: Johnny Willemsen (jwillemsen)
Date: 2003-03-19 08:09

Message:
Logged In: YES 
user_id=585332

We haven't been able to reproduce the problem yet in a small 
example. Can this be caused by the following which is done 
in the makefile structure of ACE?

  dlltool --export-all --output-def $(VSHDIR)$@.def --dllname 
@ \
    $(VSHOBJS1) \
  && mv $(VSHDIR)/$@.def $(VSHDIR)/$@.def.old \
  && sed 's/;.*$$//g' < $(VSHDIR)/$@.def.old > 
$(VSHDIR)/@.def \
  && $(SOLINK.cc) -Wl,--enable-auto-image-base -Wl,--out-
implib,$@.a \
    -shared -o $@ $(LDFLAGS) $(VSHDIR)/$@.def \
    $(VSHOBJS1) $(ACE_SHLIBS) $(LIBS)

The comments are stripped from the .def file. When we let 
the comment stay, we get a crash of ld. This is on the lines 
that have ... at the end of the line or are from a operator ==

From the .def file this are the things we have problems with
	_ZN14ACE_Time_Value4zeroE @ 1067 DATA ; 
ACE_Time_Value::zero
	_ZN14ACE_Time_Value8max_timeE @ 1068 
DATA ; ACE_Time_Value::max_time

Does anyone know something to do about this?

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Comment By: Johnny Willemsen (jwillemsen)
Date: 2003-02-10 08:13

Message:
Logged In: YES 
user_id=585332

The disabling of the warnings works, but I think it is not the 
correct way to go. I will try to create a small test application 
soon.

----------------------------------------------------------------------

Comment By: Danny Smith (dannysmith)
Date: 2003-02-09 20:02

Message:
Logged In: YES 
user_id=11494

If you add  -Wl,--enable-auto-import  that should get 
rid of warnings.

Could you please send an example of a class that is 
causing the warning (for one member but not the other). 
even with explict __declspec(dllimport).

Danny

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=102435&aid=683455&group_id=2435