Re: gnuplot 5.x.x.x not starting correctly in 64-bit CYGWIN console

[Ken Brown <kbrown at cornell dot edu>]

On 11/16/2015 4:26 PM, John J Ottusch wrote:
> I think this problem is related to the fact that I have both 32-bit and
> 64-bit versions of CYGWIN installed on my Windows 7 PC. They are on the
> same disk but in different directories (/cygdrive/c/win32app/cygwin vs.
> /cygdrive/c/win64app/cygwin).
>
> So far I have observed the problem only when I try to run the version of
> gnuplot that comes with the most recent 64-bit CYGWIN installation. I
> believe gnuplot v4.x.x.x had been working in 64-bit CYGWIN before I
> updated.
>
> I always run gnuplot from an X11 or rxvt console window within the
> CYGWIN environment. I'm using v4.4.4 with my 32 bit CYGWIN installation
> without any problems.
>
> I just updated my 64 bit CYGWIN installation in order to try out gnuplot
> v5.x.x. I didn't load absolutely everything, but I did accept all
> automatic dependencies. Installation went smoothly and all seems to work
> fine except for gnuplot.
>
> Observations:
>
> 1) When I type gnuplot into a 64-bit console window it returns
> immediately to my prompt with no visible message instead of entering
> interactive mode.
>
> In this case my PATH is
> /usr/local/bin:/usr/bin:/cygdrive/c/Windows/system32:/cygdrive/c/win32ap
> p/cygwin/bin
>
> 2) However, doing the above with /cygdrive/c/win32app/cygwin/bin removed
> from my PATH (or replaced by /cygdrive/c/win64app/cygwin/bin) produces
> this error message:
>
> C:/win64app/cygwin/bin/gnuplot.exe: error while loading shared
> libraries: ?: cannot open shared object file: No such file or directory
>
> So something in /cygdrive/c/win32app/cygwin/bin is making a difference.
> Hard for me to tell from the error message which shared library it is
> looking for.

The command 'cygcheck /usr/bin/gnuplot.exe' should give you that 
information.

Ken


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