developement location(One where a matching RTools is installed
 and R was built using those tools) the environment settings
 to have a local Package store found is a bit different.
+
+I make sure that the directory RR/library exists and then I
+run this command and tar up the RR directory afRLIBSter:
+
+  R CMD INSTALL --preclean -l ./RR/library package.tar.gx
+  tar -zcvf RLIBS.tar.gz RR
+
+With windows I ship cygwin tools for tar and gzip and associated
+DLLs so there is some similarity between extractions by the
+wrapper scripts.