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

[Jun T. <tak...@kb...>]

(I'm resending this because I've forgot to include gnuplot-beta in To:)

2014/07/17 06:26, Ethan A Merritt <sf...@us...> wrote:

>> 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