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R: [1.7] does LD_PRELOAD support more than 1 dll ?


--- Ven 29/5/09, Marco Atzeri  ha scritto:

> Da: Marco Atzeri 
> Oggetto: [1.7] does LD_PRELOAD support more than 1 dll ?
> A: cygwin@cygwin.com
> Data: Venerdì 29 maggio 2009, 10:10
> 
> Hi All,
> I was trying to understand why LD_PRELOAD does not work
> for octave, that have 3 dlls specified on LD_PRELOAD 
> and I discovered that it seems to handle only 
> 1 dll and not more.
> If I specify 2 or more dlls, LD_PRELOAD stop to work
> 
> $uname -a
> CYGWIN_NT-5.1 ITQMOZCAS2NB007 1.7.0(0.210/5/3) 2009-05-15
> 17:15 i686 Cygwin
> 
> as test case I used the fltk-demos sudoku,
> and chosen 2 of the dll's
> 
>  $ cygcheck sudoku
> [snip]
> ? C:\cygwin2\bin\cygjpeg-62.dll
> ? C:\cygwin2\bin\cygpng12.dll
> [snip]
> 
> copied them in a tmp directory
> 
> mkdir /tmp/prova
> cp cygjpeg-62.dll cygpng12.dll /tmp/prova
> 
> 
> the outcome is:
>  $ LD_PRELOAD="/tmp/prova/cygjpeg-62.dll
> /tmp/prova/cygpng12.dll" sudoku
> ? ? ? 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
> 
> while if I specify only 1 dll
> $ LD_PRELOAD="/tmp/prova/cygjpeg-62.dll" sudoku
> 
> it works.
> 
> Is it a bug, feature or a BLODA issue ?
> 
> Thanks
> Marco

Answering myself.
Must use ":"  as separator

LD_PRELOAD="/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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