linux-kernel - [PATCH] fix rebuild of wakeup.bin

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Date:	Thu, 1 May 2008 11:31:07 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Roland McGrath <roland@...hat.com>, Ingo Molnar <mingo@...e.hu>
Cc:	Pavel Machek <pavel@...e.cz>, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Roland McGrath <roland@...hat.com>
Subject: [PATCH] fix rebuild of wakeup.bin

In kernel/acpi/realmode/Makefile use the 'always'
variable to say that wakeup.bin should always
be made.

In acpi/Makefile we then do not need to specify the
requested target and we avoid the message from make:

   `arch/x86/kernel/acpi/realmode/wakeup.bin' is up to date.

Add wakeup.lds to list af targets to avoid rebuilding
wakeup.bin - from Roland McGrath.

Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: Rafael J. Wysocki <rjw@...k.pl>
Cc: Pavel Machek <pavel@...e.cz>
Cc: Thomas Gleixner <tglx@...utronix.de> 
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Roland McGrath <roland@...hat.com>
---
diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile
index 7335959..fd5ca97 100644
--- a/arch/x86/kernel/acpi/Makefile
+++ b/arch/x86/kernel/acpi/Makefile
@@ -10,5 +10,5 @@ endif
 $(obj)/wakeup_rm.o:    $(obj)/realmode/wakeup.bin
 
 $(obj)/realmode/wakeup.bin: FORCE
-	$(Q)$(MAKE) $(build)=$(obj)/realmode $@
+	$(Q)$(MAKE) $(build)=$(obj)/realmode
 
diff --git a/arch/x86/kernel/acpi/realmode/Makefile b/arch/x86/kernel/acpi/realmode/Makefile
index 0929008..1c31cc0 100644
--- a/arch/x86/kernel/acpi/realmode/Makefile
+++ b/arch/x86/kernel/acpi/realmode/Makefile
@@ -6,7 +6,8 @@
 # for more details.
 #
 
-targets		:= wakeup.bin wakeup.elf
+always		:= wakeup.bin
+targets		:= wakeup.elf wakeup.lds
 
 wakeup-y	+= wakeup.o wakemain.o video-mode.o copy.o
 
@@ -48,7 +49,7 @@ LDFLAGS_wakeup.elf	:= -T
 
 CPPFLAGS_wakeup.lds += -P -C
 
-$(obj)/wakeup.elf: $(src)/wakeup.lds $(WAKEUP_OBJS) FORCE
+$(obj)/wakeup.elf: $(obj)/wakeup.lds $(WAKEUP_OBJS) FORCE
 	$(call if_changed,ld)
 
 OBJCOPYFLAGS_wakeup.bin	:= -O binary
--
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