elif [ -x "`which gmake`" ] ; then
# "gmake" is the preferred name in *BSD.
GNUMAKE=gmake
elif [ -x "`which gnumake`" ] ; then
# MacOS X aka Darwin
elif [ -x "`which gmake`" ] ; then
# "gmake" is the preferred name in *BSD.
GNUMAKE=gmake
elif [ -x "`which gnumake`" ] ; then
# MacOS X aka Darwin