-You will probably see *** WHOA THERE!!! *** messages from Configure for
-d_tzname and i_unistd. Keep the recommended values. See
-hints/sunos_4_1.sh for more information.
-EOM
-
-# SunOS 4.1.3 has two extra fields in struct tm. This works around
-# the problem. Other BSD platforms may have similar problems.
-POSIX_cflags='ccflags="$ccflags -DSTRUCT_TM_HASZONE"'
-
-# check if user is in a bsd or system 5 type environment
+# The correct setting of groupstype depends on which version of the C
+# library is used. If you are in the 'System V environment'
+# (i.e. you have /usr/5bin ahead of /usr/bin in your PATH), and
+# you use Sun's cc compiler, then you'll pick up /usr/5bin/cc, which
+# links against the C library in /usr/5lib. This library has
+# groupstype='gid_t'.
+# If you are in the normal BSDish environment, then you'll pick up
+# /usr/ucb/cc, which links against the C library in /usr/lib. That
+# library has groupstype='int'.
+#
+# If you are using gcc, it links against the C library in /usr/lib
+# independent of whether or not you are in the 'System V environment'.
+# If you want to use the System V libraries, then you need to
+# manually set groupstype='gid_t' and add explicit references to
+# /usr/5lib when Configure prompts you for where to look for libraries.
+#
+# Check if user is in a bsd or system 5 type environment