RE: Problems with dll-generation under Win98

RE: Problems with dll-generation under Win98

[Heribert Dahms]

Hi Mumit,

looks like you accidently omitted the critical word,
so to clarify for newbies:
Win9x does *not* zero out files past seek!
(as it should like Unix and NT)


Bye, Heribert (heribert_dahms@icon-gmbh.de)

> -----Original Message-----
> From:	Mumit Khan [SMTP:khan@xraylith.wisc.EDU]
> Sent:	Wednesday, July 07, 1999 21:20
> To:	Oliver Oberschelp
> Cc:	cygwin@sourceware.cygnus.com
> Subject:	Re: Problems with dll-generation under Win98
> 
> On Wed, 7 Jul 1999, Oliver Oberschelp wrote:
> 
> > Hello,
> > 
> > I've got a strange problem with building dlls under Win98.
> > Considering the following example for a batch file:
> 
> Known problem. Win9x does zero out files if you seek past the end and
> write. NT loader seems to be more forgiving and can successfully load
> some of these DLLs, but Win9x does not.
> 
> Regards,
> Mumit

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Re: Problems with dll-generation under Win98

[DJ Delorie]

> Win9x does *not* zero out files past seek!

Note that cygwin has a work-around to fix this, but it only works if
you let cygwin do it.  That was actually my first change to cygwin as
a full-time employee!

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RE: Problems with dll-generation under Win98

[Heribert Dahms]

Hi Mumit,

looks like you accidently omitted the critical word,
so to clarify for newbies:
Win9x does *not* zero out files past seek!
(as it should like Unix and NT)


Bye, Heribert (heribert_dahms@icon-gmbh.de)

> -----Original Message-----
> From:	Mumit Khan [SMTP:khan@xraylith.wisc.EDU]
> Sent:	Wednesday, July 07, 1999 21:20
> To:	Oliver Oberschelp
> Cc:	cygwin@sourceware.cygnus.com
> Subject:	Re: Problems with dll-generation under Win98
> 
> On Wed, 7 Jul 1999, Oliver Oberschelp wrote:
> 
> > Hello,
> > 
> > I've got a strange problem with building dlls under Win98.
> > Considering the following example for a batch file:
> 
> Known problem. Win9x does zero out files if you seek past the end and
> write. NT loader seems to be more forgiving and can successfully load
> some of these DLLs, but Win9x does not.
> 
> Regards,
> Mumit

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Re: Problems with dll-generation under Win98

[DJ Delorie]

> Win9x does *not* zero out files past seek!

Note that cygwin has a work-around to fix this, but it only works if
you let cygwin do it.  That was actually my first change to cygwin as
a full-time employee!

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Problems with dll-generation under Win98

[Oliver Oberschelp]

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Hello,

I've got a strange problem with building dlls under Win98.
Considering the following example for a batch file:

++++++++++++++++

SET GCC_EXEC_PREFIX=C:\Praktikum_RT2\mingw32\lib\gcc-lib\
SET
LIBRARY_PATH=C:\Praktikum_RT2\mingw32\lib\gcc-lib\i386-mingw32\egcs-2.91.66;
C:\Praktikum_RT2\mingw32\i386-mingw32\lib;C:\Praktikum_RT2\mingw32\lib
SET
C_INCLUDE_PATH=C:\Praktikum_RT2\mingw32\lib\gcc-lib\i386-mingw32\egcs-2.91.6
6\include;C:\Praktikum_RT2\mingw32\i386-mingw32\include;C:\Praktikum_RT2\min
gw32\include
SET CPLUS_INCLUDE_PATH=%C_INCLUDE_PATH%;C:\Praktikum_RT2\mingw32\include\g++
SET OBJC_INCLUDE_PATH=%C_INCLUDE_PATH%

gcc -c -IC:\Praktikum_RT2\CAMeL-VIEW\CSources actuator.c

echo INPUT(C:\Praktikum_RT2\CAMeL-VIEW\CSources\dsc_math.o) > ACTUATOR.lnk
echo INPUT(C:\Praktikum_RT2\CAMeL-VIEW\CSources\s_intpol.o) >> ACTUATOR.lnk
echo INPUT(C:\Praktikum_RT2\CAMeL-VIEW\CSources\dllinit.o) >> ACTUATOR.lnk
echo INPUT(actuator.o) >> ACTUATOR.lnk

echo LIBRARY ACTUATOR > ACTUATOR.def
echo EXPORTS >> ACTUATOR.def
echo model=model@0 >> ACTUATOR.def

gcc -mdll -o jnk.dll -Wl,--base-file,ACTUATOR.bas,ACTUATOR.lnk

dlltool --dllname ACTUATOR.dll --base-file ACTUATOR.bas --output-exp
ACTUATOR.exp --def ACTUATOR.def

gcc -mdll -o jnk.dll -Wl,--base-file,ACTUATOR.bas,ACTUATOR.lnk ACTUATOR.exp

+++++++++++++++++

The jnk.dll is loadable when generated under NT in the program running NT.
The jnk.dll is loadable when generated under 98 in the program running NT.
The jnk.dll is loadable when generated under NT in the program running 98.
The jnk.dll is NOT loadable when generated under 98 in the program running
98.
(But we must have this constellation! :( )

We've checked the contents of the object-files - they are identical, but not
the ACTUATOR.exp.

Is it a known problem? Is there a solution?

MfG. Oliver Oberschelp


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

Dipl.-Ing. Oliver Oberschelp

E-Mail:	mailto:Oliver.Oberschelp@mlap.de

Dienstlich:	Pohlweg 55
		33098 Paderborn
		Tel.: +49-5251-60-2416
		FAX: +49-5251-60-3550

Privat:		Soester Weg 1
		33129 Delbrück
		Tel.: +49-5250-934494


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Re: Problems with dll-generation under Win98

[Mumit Khan]

On Wed, 7 Jul 1999, Oliver Oberschelp wrote:

> Hello,
> 
> I've got a strange problem with building dlls under Win98.
> Considering the following example for a batch file:

Known problem. Win9x does zero out files if you seek past the end and
write. NT loader seems to be more forgiving and can successfully load
some of these DLLs, but Win9x does not.

Regards,
Mumit



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Re: Problems with dll-generation under Win98

[Mumit Khan]

On Wed, 7 Jul 1999, Oliver Oberschelp wrote:

> Hello,
> 
> I've got a strange problem with building dlls under Win98.
> Considering the following example for a batch file:

Known problem. Win9x does zero out files if you seek past the end and
write. NT loader seems to be more forgiving and can successfully load
some of these DLLs, but Win9x does not.

Regards,
Mumit



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Problems with dll-generation under Win98

[Oliver Oberschelp]

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Hello,

I've got a strange problem with building dlls under Win98.
Considering the following example for a batch file:

++++++++++++++++

SET GCC_EXEC_PREFIX=C:\Praktikum_RT2\mingw32\lib\gcc-lib\
SET
LIBRARY_PATH=C:\Praktikum_RT2\mingw32\lib\gcc-lib\i386-mingw32\egcs-2.91.66;
C:\Praktikum_RT2\mingw32\i386-mingw32\lib;C:\Praktikum_RT2\mingw32\lib
SET
C_INCLUDE_PATH=C:\Praktikum_RT2\mingw32\lib\gcc-lib\i386-mingw32\egcs-2.91.6
6\include;C:\Praktikum_RT2\mingw32\i386-mingw32\include;C:\Praktikum_RT2\min
gw32\include
SET CPLUS_INCLUDE_PATH=%C_INCLUDE_PATH%;C:\Praktikum_RT2\mingw32\include\g++
SET OBJC_INCLUDE_PATH=%C_INCLUDE_PATH%

gcc -c -IC:\Praktikum_RT2\CAMeL-VIEW\CSources actuator.c

echo INPUT(C:\Praktikum_RT2\CAMeL-VIEW\CSources\dsc_math.o) > ACTUATOR.lnk
echo INPUT(C:\Praktikum_RT2\CAMeL-VIEW\CSources\s_intpol.o) >> ACTUATOR.lnk
echo INPUT(C:\Praktikum_RT2\CAMeL-VIEW\CSources\dllinit.o) >> ACTUATOR.lnk
echo INPUT(actuator.o) >> ACTUATOR.lnk

echo LIBRARY ACTUATOR > ACTUATOR.def
echo EXPORTS >> ACTUATOR.def
echo model=model@0 >> ACTUATOR.def

gcc -mdll -o jnk.dll -Wl,--base-file,ACTUATOR.bas,ACTUATOR.lnk

dlltool --dllname ACTUATOR.dll --base-file ACTUATOR.bas --output-exp
ACTUATOR.exp --def ACTUATOR.def

gcc -mdll -o jnk.dll -Wl,--base-file,ACTUATOR.bas,ACTUATOR.lnk ACTUATOR.exp

+++++++++++++++++

The jnk.dll is loadable when generated under NT in the program running NT.
The jnk.dll is loadable when generated under 98 in the program running NT.
The jnk.dll is loadable when generated under NT in the program running 98.
The jnk.dll is NOT loadable when generated under 98 in the program running
98.
(But we must have this constellation! :( )

We've checked the contents of the object-files - they are identical, but not
the ACTUATOR.exp.

Is it a known problem? Is there a solution?

MfG. Oliver Oberschelp


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

Dipl.-Ing. Oliver Oberschelp

E-Mail:	mailto:Oliver.Oberschelp@mlap.de

Dienstlich:	Pohlweg 55
		33098 Paderborn
		Tel.: +49-5251-60-2416
		FAX: +49-5251-60-3550

Privat:		Soester Weg 1
		33129 Delbrück
		Tel.: +49-5250-934494


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