[PATCH 11/11] kbuild: sanity check the specified arch

[Sam Ravnborg]

If the ARCH used does not exist print out the following:
Makefile:203: *** "ERROR: ARCH (i386) does not exist (for i386 and x86_64 use ARCH=x86)".  Stop.
This check is highly relevant now i386 and x86_64 are gone.

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
---
 Makefile |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/Makefile b/Makefile
index afeeef8..902082b 100644
--- a/Makefile
+++ b/Makefile
@@ -198,6 +198,11 @@ CROSS_COMPILE	?=
 UTS_MACHINE 	:= $(ARCH)
 SRCARCH 	:= $(ARCH)
 
+# Sanity check the specified ARCH
+ifeq ($(wildcard $(srctree)/arch/$(ARCH)/Kconfig),)
+        $(error "ERROR: ARCH ($(ARCH)) does not exist (for i386 and x86_64 use ARCH=x86)")
+endif
+
 KCONFIG_CONFIG	?= .config
 
 # SHELL used by kbuild
-- 
1.5.3.4.1157.g0e74-dirty

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