Re: [Rd] (PR#13165) R CMD config doesn't export JAVA_LD_LIBRARY_PATH

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Wed, 15 Oct 2008 11:04:47 +0100 (BST)

The subject line is true, and as documented hence not a bug.

If this was meant to be an enhancement request, please note that the R FAQ said

   There is a section of the bug repository for suggestions for    enhancements for R labelled `wishlist'. Suggestions can be submitted    in the same ways as bugs, but please ensure that the subject line makes    clear that this is for the wishlist and not a bug report, for example by    starting with `Wishlist:'.

On Wed, 15 Oct 2008, chakj_at_stanford.edu wrote:

> R CMD config exports the following variables:
>
> JAR Java archive tool command
> JAVA Java interpreter command
> JAVAC Java compiler command
> JAVAH Java header and stub generator command
> JAVA_HOME path to the home of Java distribution
> JAVA_LIBS flags needed for linking against Java libraries
> JAVA_CPPFLAGS C preprocessor flags needed for compiling JNI programs
>
> JAVA_LD_LIBRARY_PATH is defined in Makeconf, but not exported.
> Specifically, src/scripts/config includes the following line:
> ok_java_vars="JAVA JAVAC JAVAH JAR JAVA_HOME JAVA_LIBS JAVA_CPPFLAGS"
>
> This list does not include JAVA_LD_LIBRARY_PATH, with no explanation of
> why not. Providing this env variable would allow developers to use RPATH
> instead of setting the LD_LIBRARY_PATH variable by hand before running R
> extensions that use Java.

What is RPATH? Since R and R CMD set a LD_LIBRARY_PATH that includes JAVA_LD_LIBRARY_PATH, this makes no sense to me: the documented way is to run extensions via loading into R or via R CMD.

If you can make a good case for changing this, please re-submit an enhancement request containing that case in the form described in the FAQ, giving your credentials (this email is from an unnamed account and unsigned: we have no idea who you are).

> --please do not edit the information below--
>
> Version:
> platform = x86_64-pc-linux-gnu
> arch = x86_64
> os = linux-gnu
> system = x86_64, linux-gnu
> status =
> major = 2
> minor = 7.1
> year = 2008
> month = 06
> day = 23
> svn rev = 45970
> language = R
> version.string = R version 2.7.1 (2008-06-23)
>
> Locale:
> LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
>
> Search Path:
> .GlobalEnv, package:stats, package:graphics, package:grDevices,
> package:utils, package:datasets, package:methods, Autoloads, package:base
>
> ______________________________________________
> R-devel_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

-- 
Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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