[Rd] bash help please

Duncan Murdoch
Tue, 06 Sep 2005 15:01:31 -0000

On 9/6/2005 10:56 AM, Duncan Murdoch wrote:
> I'd like to make MikTeX the default TeX package in 2.2.0, but we still

I forgot to say "in Windows".  Sorry.

> need to let people use other packages.  The problem is that MikTeX wants
> a command line option --include-directory $R_HOME/share/texmf, while
> other packages specify includes via environment variables, and barf when
> they see the unexpected option.
>
> The choice should be controlled by the user's settings in the MkRules
> file.  For example, I'll put something like this there:
>
> ifneq ($(strip $(BUILD)),CROSS)
> # Define to use MikTeX
> #
> PDFLATEX = pdflatex --include-directory=$(RHOME)/share/texmf
> LATEX = latex --include-directory=$(RHOME)/share/texmf
> PDFTEX = pdftex --include-directory=$(RHOME)/share/texmf
> TEX = tex --include-directory=$(RHOME)/share/texmf
> #
> # Define to use other TeX
> #
> # PDFLATEX = pdflatex
> # LATEX = latex
> # PDFTEX = pdftex
> # TEX = tex
> else
> PDFLATEX = pdflatex
> LATEX = latex
> PDFTEX = pdftex
> TEX = tex
> endif
>
> My problem is that I don't know enough about Bourne shell scripting and
> GNU make to have this affect Rd2dvi (and possibly other Rcmd commands, I
> haven't looked yet).
>
> Specifically, we need to have Rd2dvi.sh import these definitions from
> src/gnuwin32/MkRules, which may have been edited by the user since
> Rd2dvi.sh was built.  A complication is that if the user has already
> defined environment variables named PDFLATEX, LATEX, etc, we don't want
> to overwrite them.
>
> One way would be to tell users to rebuild Rd2dvi.sh.  However, it would
> be easier if Rd2dvi.sh could import the changes automatically.
>
> I was thinking of putting something like this into Rd2dvi.sh:
>
> if test ${R_HOME}/src/gnuwin32/MkRules -nt ${R_HOME}/bin/setTeXenv.sh; then
>    make -f ${R_HOME}/src/gnuwin32/Makefile ${R_HOME}/bin/setTeXenv.sh
> fi
> sh setTeXenv.sh
>
> and then have the Makefile build the setTeXenv.sh script--but what
> should it contain?  Alternatively, can GNU make export environtment
> variables directly, and skip creating this new script?
>
> Advice from shell hackers is welcomed!
>
> Duncan Murdoch
>
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