build fails to build help for nlme

Hi all,

I'm trying to build R-1.8.1 from source on Linux and getting the
following error when the makefile gets to the step of building the help
for 'nlme':

<snip>
ranef.lme                         text    html    latex   example
reStruct                          text    html    latex   example
/home/sfalcon/sw/R-related/R-1.8.1/bin/INSTALL: line 1:  8133 Segmentation fault      ${R_CMD} perl "${R_HOME}/share/perl/build-help.pl" ${build_help_opts} "${pkg_dir}" "${lib}" "${R_PACKAGE_DIR}" "${pkg_name}"
ERROR: building help failed for package 'nlme'
** Removing '/home/sfalcon/sw/R-related/R-1.8.1/library/nlme'
make[2]: *** [nlme.ts] Error 1
make[2]: Leaving directory
`/home/sfalcon/sw/R-related/R-1.8.1/src/library/Recommended'
make[1]: *** [recommended-packages] Error 2
make[1]: Leaving directory
`/home/sfalcon/sw/R-related/R-1.8.1/src/library/Recommended'
make: *** [stamp-recommended] Error 2
</snip>

Has anyone else encountered this?

I've had no difficulties compiling previous versions of R on this
machine.


Thanks,

+ seth