Re: --without-x and 'make check' will create broken symlink to gnuplot_x11

[Ethan M. <eam...@gm...>]

I suspect that the --program-suffix option was not taken into account
when putting together the gnuplot build system. I assume the reason
for adding a suffix is so that you can have multiple versions. The
build system assumes that this is handled by placing a file with a
fixed name in a version-specific directory, not by placing
alternatively named files in a single directory.

If you really need this capability, I think the build system would
have to be modified so that selection of the --program-suffix option
actually modifies the source of .../term/x11.trm to call the outboard
driver using a different name.  But I honestly don't see why this is
desirable.

Meanwhile your original observation that the "make check" can break if
x11 is not used remains true, so I am inclined to remove the symlink
generation from the demo Makefile.  I would expect that anyone who
understands this well enough to select --program-suffix also knows
enough to create a symlink themself if necessary.

  Ethan


On Wed, Jul 16, 2014 at 4:28 PM, Jun T. <tak...@kb...> wrote:
>
> 2014/07/17 06:26、Ethan A Merritt <sf...@us...> のメール：
>
>>> i.e., gnuplot-5 tries to start gnuplot_qt but in $HOME/libexec there is
>>> gnuplot_qt-5 but not gnuplot_qt (assuming I haven't installed gnuplot
>>> with --prefix=$HOME but without --program-suffix before).
>>
>> That is the purpose of the environment variable GNUPLOT_DRIVER_DIR.
>
> Yes, I know.
> Please notice that I added --program-suffix='-5' to the configure options.
> After I run 'make install', gnuplot-5 is installed in $prefix/bin/,
> and gnuplot_qt-5 is installed in $prefix/libexec/gnuplot/5.0/gnuplot_qt-5.
> But If I start $prefix/bin/gnuplot-5, it tries to start
> $prefix/libexec/gnuplot/5.0/gnuplot_qt, which does not exists.
> I guess in the case of x11 terminal $prefix/bin/gnuplot will start
> $prefix/libexec/gnuplot/5.0/gnuplot_x11-5 (NOT gnuplot_x11) to avoid
> this problem.
>
>> .../demo/Makefile sets this to GNUPLOT_DRIVER_DIR=$$bdir/../src
>> so that gnuplot_x11 and gnuplot_qt are correctly found in the build directory
>> rather than in the system install directory (since "make check" can be run
>> before installation).
>
> In the case of qt terminal, src/gnuplot (not yet installed; run while
> make check) tries to start $GNUPLOT_DRIVER_DIR/gnuplot_qt, which exists.
> I guess (just a guess) that, in the case of x11 terminal, src/gnuplot
> will try to start $GNUPLOT_DRIVER_DIR/gnuplot_x11-5, which does NOT exist.
> So 'make check' will make a symlink in src/ (i.e., in GNUPLOT_DRIVER_DIR) as
> ln -s gnuplot_x11 gnuplot_x11-5
>