Add checking for strtoul. SunOS4 does not have it.

src/bin/pg_encoding/Makefile

@@ -4,7 +4,7 @@
 #
 # Copyright (c) 1998, PostgreSQL Global Development Group
 #
-# $Header: /cvsroot/pgsql/src/bin/pg_encoding/Attic/Makefile,v 1.13 2001/02/20 19:20:28 petere Exp $
+# $Header: /cvsroot/pgsql/src/bin/pg_encoding/Attic/Makefile,v 1.14 2001/03/23 05:46:05 ishii Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -16,6 +16,13 @@ OBJS= pg_encoding.o
 
 all: submake pg_encoding
 
+ifdef STRTOUL
+OBJS+=$(top_builddir)/src/backend/port/strtoul.o
+
+$(top_builddir)/src/backend/port/strtoul.o:
+	$(MAKE) -C $(top_builddir)/src/backend/port strtoul.o
+endif
+
 pg_encoding: $(OBJS)
 	$(CC) $(CFLAGS) $^ $(libpq) $(LDFLAGS) $(LIBS) -o $@