Hi Alan, Chen,
>
> To Shen-Yeh Chen:
>
> To add to what Arjen said above, my tests of running plplot in a tclsh
> environment on
> MinGW/MSYS show that setting PLPLOT_DRV_DIR and PLPLOT_LIB is not
> necessary for my particual version of that platform.
> This makes sense because after all, PLplot already knows where
> path-to-drvinfo-
> files and path-to-pal-files are located for both the build tree and the
> install tree so
> there should be no need for you to remind PLplot of information it alread
> knows
> (subject to possible mistakes about whether you want the build tree or
> install tree
> locations). Note, PLplot uses a heuristic (is current path within the build
> tree?) to
> decide which set of locations it should use. However, on Arjen's MinGW/MSYS
> platform (which was a later version than mine) it turned out that heuristic
> logic gave
> the wrong result. Therefore, he has long been in the habit of setting those
> two
> environment variables to work around that bug in the heuristic.
>
> The present status is I believe I completely fixed that bug last week for the
> git master
> tip version of PLplot so the heuristic will work properly for all MinGW/MSYS
> versions.
> Arjen confirmed that fix worked for a small test on his MinGW/MSYS platform.
> So I
> frankly don't understand why he needed to set PLPLOT_DRV_DIR and
> PLPLOT_LIB above. Arjen does plan to follow up with comprehensive testing
> (without either PLPLOT_DRV_DIR or PLPLOT_LIB set) of that fix as well, but he
> hasn't done that yet for a complete final confirmation of that fix.
>
Indeed, I have focused first on Cygwin. I have tested Cygwin with an X server
running, but that is giving very odd results. I will report them separately.
Also note my report on Cygwin dd. 26 april. The curious thing there was that
the Python bindings were turned off for the static case.
> Anyhow, if you are using either the build-tree version of PLplot or a
> properly installed
> install-tree version of PLplot for the git master tip version of PLplot, you
> will likely not
> need to set PLPLOT_DRV_DIR or PLPLOT_LIB now, but if you still do need to set
> those variables for the stated conditions and/or Arjen's planned comprehensive
> testing shows any problems, I guarantee to get that bug fixed.
>
> By the way, if you are using your own home-built procedure for installing
> PLplot (i.e.,
> copying bits and pieces of it from the build tree to some location), then you
> likely do
> have to set PLPLOT_DRV_DIR or PLPLOT_LIB, but I would highly recommend
> instead that you simply use the install target to install PLplot since that
> is likely more
> reliable than any home-built procedure for doing the same task and also it
> should
> allow you (assuming the heuristic now works on all
> platforms) to avoid having to set those two environment variables.
>
This should be safer indeed, but is the install directory then incorporated in
the DLLs? I will see that I run the comprehensive tests using bare Windows this
week - using winbash.
Regards,
Arjen
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