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Date: Fri, 29 May 2009 09:34:36 +0000 (GMT)
From: Marco Atzeri <marco_atzeri AT yahoo DOT it>
Subject: R: [1.7] does LD_PRELOAD support more than 1 dll ?
To: cygwin AT cygwin DOT com
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--- Ven 29/5/09, Marco Atzeri  ha scritto:

> Da: Marco Atzeri=20
> Oggetto: [1.7] does LD_PRELOAD support more than 1 dll ?
> A: cygwin AT cygwin DOT com
> Data: Venerd=EC 29 maggio 2009, 10:10
>=20
> Hi All,
> I was trying to understand why LD_PRELOAD does not work
> for octave, that have 3 dlls specified on LD_PRELOAD=20
> and I discovered that it seems to handle only=20
> 1 dll and not more.
> If I specify 2 or more dlls, LD_PRELOAD stop to work
>=20
> $uname -a
> CYGWIN_NT-5.1 ITQMOZCAS2NB007 1.7.0(0.210/5/3) 2009-05-15
> 17:15 i686 Cygwin
>=20
> as test case I used the fltk-demos sudoku,
> and chosen 2 of the dll's
>=20
>  $ cygcheck sudoku
> [snip]
> =A0 C:\cygwin2\bin\cygjpeg-62.dll
> =A0 C:\cygwin2\bin\cygpng12.dll
> [snip]
>=20
> copied them in a tmp directory
>=20
> mkdir /tmp/prova
> cp cygjpeg-62.dll cygpng12.dll /tmp/prova
>=20
>=20
> the outcome is:
>  $ LD_PRELOAD=3D"/tmp/prova/cygjpeg-62.dll
> /tmp/prova/cygpng12.dll" sudoku
> =A0 =A0 =A0 3 [main] bash 12924
> C:\cygwin2\bin\bash.exe: *** fatal error - error while
> loading shared libraries: /tmp/prova/cygjpeg-62.dll
> /tmp/prova/cygpng12.dll: cannot open shared object file: No
> such file or directory
> Hangup
>=20
> while if I specify only 1 dll
> $ LD_PRELOAD=3D"/tmp/prova/cygjpeg-62.dll" sudoku
>=20
> it works.
>=20
> Is it a bug, feature or a BLODA issue ?
>=20
> Thanks
> Marco

Answering myself.
Must use ":"  as separator

LD_PRELOAD=3D"/tmp/prova/cygjpeg-62.dll:/tmp/prova/cygpng12.dll" sudoku

is working.

It seems that cygwin does not accept the space as separator in
LD_PRELOAD as other systems


Regards
Marco






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