patch-2.1.106 linux/Rules.make

• Lines: 18
• Date: Tue Jun 9 01:40:49 1998
• Orig file: v2.1.105/linux/Rules.make
• Orig date: Tue Jun 9 11:57:28 1998

diff -u --recursive --new-file v2.1.105/linux/Rules.make linux/Rules.make
@@ -189,9 +189,14 @@
 endif
 
 $(MODINCL)/%.ver: %.c
-	$(CC) $(CFLAGS) -E -D__GENKSYMS__ $<\
-	| $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp
-	mv $@.tmp $@
+	@if [ ! -r $(MODINCL)/$*.stamp -o $(MODINCL)/$*.stamp -ot $< ]; then \
+		echo '$(CC) $(CFLAGS) -E -D__GENKSYMS__ $<'; \
+		echo '| $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp'; \
+		$(CC) $(CFLAGS) -E -D__GENKSYMS__ $< \
+		| $(GENKSYMS) $(genksyms_smp_prefix) -k $(VERSION).$(PATCHLEVEL).$(SUBLEVEL) > $@.tmp; \
+		if [ -r $@ ] && cmp -s $@ $@.tmp; then echo $@ is unchanged; rm -f $@.tmp; \
+		else echo mv $@.tmp $@; mv -f $@.tmp $@; fi; \
+	fi; touch $(MODINCL)/$*.stamp
 	
 $(addprefix $(MODINCL)/,$(SYMTAB_OBJS:.o=.ver)): $(TOPDIR)/include/linux/autoconf.h