With windows I ship cygwin tools for tar and gzip and associated
DLLs so there is some similarity between extractions by the
wrapper scripts.
+
+Under Linux using perl I drop R into current directory
+and set these two things:
+
+ $ENV{R_HOME} = "$Rlocation";
+ $ENV{LD_LIBRARY_PATH} = "$Rlocation/lib";
+
+If there is a library tar ball as mentioned above, the following
+is done:
+
+ # do we have prebuilt libraries?
+ my $renviron;
+ if(-f "RLIBS.tar.gz") {
+ system("tar -zxvf RLIBS.tar.gz");
+ $ENV{HOME} = $location;
+ $renviron = "$location/.Renviron";
+ open(RLIB,">$renviron") or die "Can not create <$renviron>:$!\n";
+ print RLIB "R_LIBS_USER=$location/RR/library\n";
+ close(RLIB);
+ }
+
+Once that is done, the following starts R:
+
+ $cmdtorun = "$Rlocation/bin/Rscript --no-save ./$scripts $realarg";
+ print "about to execute <<$cmdtorun>>\n";
+ $res = system("$cmdtorun");
