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[PATCH v3] tags: honor COMPILED_SOURCE with apart output directory

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When the kernel is compiled with an "O=" argument, the object files are
not necessarily in the source tree, and more probably in another tree.

In this situation, the current used check doesn't work, and
COMPILED_SOURCE tags is broken with O= builds.

This patch fixes it by looking for object files both in source tree and
potential destination tree.

It was verified that in the case of O= usage, the current directory is
the build tree, ie. the tree referenced by O=xxx, and j is the source
tree path concatenated with relative path of the object to the source
tree root, hence the simple expression to compute "k" as the built
object.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---
Since v1: amended k expression, Marek's comments
Since v2: removed k from Masahiro's comments
---
 scripts/tags.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/tags.sh b/scripts/tags.sh
index a2ff3388e5ea..2a61db329adf 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -106,6 +106,7 @@ all_compiled_sources()
 		case "$i" in
 			*.[cS])
 				j=${i/\.[cS]/\.o}
+				j="${j#$tree}"
 				if [ -e $j ]; then
 					echo $i
 				fi
-- 
2.1.4

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[PATCH v3] tags: honor COMPILED_SOURCE with apart output directory Robert Jarzmik <robert.jarzmik@free.fr> - 2017-06-05 14:10 +0200
  Re: [PATCH v3] tags: honor COMPILED_SOURCE with apart output directory Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-06-06 02:00 +0200
    Re: [PATCH v3] tags: honor COMPILED_SOURCE with apart output directory Robert Jarzmik <robert.jarzmik@free.fr> - 2017-06-06 08:20 +0200

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