[PATCH] scripts: Fallback to KBUILD_OUTPUT if O is not specified

[Thierry Reding <thierry.reding@gmail.com>]

From: Thierry Reding <treding@nvidia.com>

The KBUILD_OUTPUT environment can be used to set the build directory as
an alternative to passing the O variable on the command-line. This works
with regular kernel builds, so it's surprising if it doesn't work within
the tools/scripts directory.

Allow KBUILD_OUTPUT if O is not specified on the command-line to avoid
any surprises.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Hi Arnaldo,

I'm not sure if you're the right person to send this to. There was noone
reported by scripts/get_maintainer.pl, but it looks like you ended up
applying most of the patches to this file lately, which kinda makes you
the de facto maintainer =).

Thierry

 tools/scripts/Makefile.include | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 8abbef164b4e..5467da41dc72 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -8,6 +8,10 @@ ifeq ($(objtree),)
 	objtree := $(O)
 endif
 endif
+else
+ifneq ($(KBUILD_OUTPUT),)
+	OUTPUT := $(KBUILD_OUTPUT)/$(if $(subdir),$(subdir)/)
+endif
 endif
 
 # check that the output directory actually exists
-- 
2.8.0