[PATCH] kbuild: update headers_install.txt document

[Masahiro Yamada]

The arch header directories "include/asm-*" were moved long ago.
Now we should check the existence of arch/*/include/uapi/asm/Kbuild
to see if an architecture supports the headers installation.
(Actually, "um" is the only architecture that does not have it.)

Signed-off-by: Masahiro Yamada <yamada.m@xxxxxxxxxxxxxxxx>
---

 Documentation/kbuild/headers_install.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/kbuild/headers_install.txt b/Documentation/kbuild/headers_install.txt
index 951eb9f..8e668d4 100644
--- a/Documentation/kbuild/headers_install.txt
+++ b/Documentation/kbuild/headers_install.txt
@@ -31,7 +31,7 @@ current architecture.  The linux/asm directory of the exported kernel headers
 is platform-specific, to see a complete list of supported architectures use
 the command:
 
-  ls -d include/asm-* | sed 's/.*-//'
+  for i in arch/*; do [ -e $i/include/uapi/asm/Kbuild ] && basename $i; done
 
 INSTALL_HDR_PATH indicates where to install the headers.  It defaults to
 "./usr/include".
-- 
1.9.1

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