Nouveau - Aug 2017 - [PATCH] drm/Makefile: Support custom output dir with O

If the `O` variable from Makefile — which allows to specify the output folder
for the build process — is used when building Linux, it needs to be specified
when building Nouveau, even when out-of-tree.

This patch doesn’t fix any issues but let the developers — who uses the `O`
variable — avoid having to keep a custom patch around.

Signed-off-by: Pierre Moreau <pierre.morrow at free.fr>
---
 drm/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drm/Makefile b/drm/Makefile
index d5e23738..1f4ef45e 100644
--- a/drm/Makefile
+++ b/drm/Makefile
@@ -11,6 +11,9 @@ endif
 
 KBUILD_OPTS := M=$(CURDIR)/nouveau
 KBUILD_OPTS += KCPPFLAGS="-Iinclude/uapi/drm"
+ifdef OUTPUTDIR
+  KBUILD_OPTS += O=$(OUTPUTDIR)
+endif
 
 all: modules
 
-- 
2.14.1