From 2ab23c95a0b77d45dc764dd4aed48fe6e8906e59 Mon Sep 17 00:00:00 2001
From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Sun, 13 Nov 2005 16:07:00 -0800
Subject: [PATCH] [PATCH] Kbuild: index asm-$(SUBARCH) headers for UML

In Uml, many definitions are borrowed from underlying subarch headers (with
#include <asm/arch/stuff.h>).  And it has become annoying to keep switching
tag files all time, so by default index the underlying subarch headers too.
Btw, it adds negligible space to the tags file (less than 1M surely, IIRC it
was around 500k over 40M).

Finally, preserve the ALLSOURCE_ARCHS command line option (I hope) - if it is
set, it is used for headers too as before.  But check my construct please, I
didn't test this.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 Makefile | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 8560b79268ba1..c31914400953b 100644
--- a/Makefile
+++ b/Makefile
@@ -1193,6 +1193,17 @@ else
 __srctree = $(srctree)/
 endif
 
+ifeq ($(ALLSOURCE_ARCHS),)
+ifeq ($(ARCH),um)
+ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
+else
+ALLINCLUDE_ARCHS := $(ARCH)
+endif
+else
+#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
+ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
+endif
+
 ALLSOURCE_ARCHS := $(ARCH)
 
 define all-sources
@@ -1208,7 +1219,7 @@ define all-sources
 	  find $(__srctree)include $(RCS_FIND_IGNORE) \
 	       \( -name config -o -name 'asm-*' \) -prune \
 	       -o -name '*.[chS]' -print; \
-	  for ARCH in $(ALLSOURCE_ARCHS) ; do \
+	  for ARCH in $(ALLINCLUDE_ARCHS) ; do \
 	       find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
 	            -name '*.[chS]' -print; \
 	  done ; \
-- 
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