Re: [BUG] config.ac

[sfeam <sf...@us...>]

Is this issue the same as Bug #1119?

   https://sourceforge.net/p/gnuplot/bugs/1119/

	Ethan

On Monday, 16 October 2017 20:42:32 Daniel J Sebald wrote:
> On 10/16/2017 08:29 PM, Daniel J Sebald wrote:
> > On 10/16/2017 07:35 PM, Ethan A Merritt via gnuplot-beta wrote:
> >  > On Sunday, 15 October, 2017 17:40:03 Achim Gratz wrote:
> >  >
> >  >  >
> >  >
> >  >  > The configury supposedly tries to find TEXDIR via kpsexpand, but that
> >  >
> >  >  > code never gets run if $prefix is set.
> >  >
> >  > I really don't know if this is correct or not.
> >  >
> >  > In my experience there are so many places that the TeX stuff
> >  >
> >  > might go, your only hope is to manually specify where it is
> >  >
> >  > on the current system. It doesn't help any that according to the
> >  >
> >  > man page
> >  >
> >  > "the syntax for kpsexpand is incompatible with teTeX´s as of version 
> > 0.4"
> >  >
> >  > I read the existing ./configure logic to be that anything kpsexpand
> >  >
> >  > returns is where things would be by default, but if you are specifying
> >  >
> >  > a $prefix then you are overriding the default.
> >  >
> >  > Does it ever make sense to mix the two?
> >  >
> >  > What do other people think?
> > 
> > Well, this
> > 
> > AC_ARG_WITH(texdir,dnl
> >    [--with-texdir=DIR       where to install latex style files
> >                            (default by kpsexpand in subdir PACKAGE)],
> >    TEXDIR="$withval",
> >    TEXDIR="no")
> > 
> > means a person can't choose a directory name "no".
> > 
> > The goal is to find a location for gnuplot's few supplemental tex/latex 
> > files?  I presume we really don't want those to go to kpsexpand's local 
> > tex; that's the system's copy of tex source.  Most typically we want the 
> > extra TeX files to go somewhere in the directory tree where gnuplot is 
> > installed.  Is that correct?
> > 
> > So, the logic of the current configure is (if no TEXDIR is specified) to 
> > choose the location where gnuplot is installed as the base directory for 
> > where TeX files will be placed.  If there is no such prefix, then it 
> > looks to the default kpsexpand location.  I presume that when the TeX 
> > files are installed at the location of the gnuplot executable that the 
> > TeX path is somehow added to the TeX system paths?
> 
> Oh, wait, I don't think I was understanding that correctly.  kpsexpand's 
> '$TEXMFLOCAL' is a location for "non-system" TeX files (that will be 
> recognized in TeX/LaTeX's path?).  So, that is typically where we want 
> files to go, regardless of whether one indicates a gnuplot installation 
> prefix or not.  Is that right?  We really want to use $prefix as a last 
> resort then, correct?  In that case, I would go with what Achim is arguing.
> 
> +    TEXDIR=`$KPSEXPAND '$TEXMFLOCAL'`
> 
> [Do we know that kpsexpand is present once reaching this point?]
> 
> +    if test "x$TEXDIR" = "x" -o "$TEXDIR" = "\$TEXMFLOCAL"; then
> 
> [If kpsexpand  fails to find a TEXMFLOCAL, how do we know that 
> TEXMFLOCAL is going to be present in our environment?  Just hoping by 
> chance that it is?  If we didn't have kpsexpand, I could see attempting 
> this last-ditch effort.]
> 
> +      if test "x$prefix" != "xNONE"; then
> +        TEXDIR=${prefix}/share/texmf
> +      else
>           TEXDIR=${ac_default_prefix}/share/texmf
>         fi
> 
> Dan
> 
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