diff mbox series

[v2] drm: prefix header search paths with $(srctree)/

Message ID 1553859161-2628-1-git-send-email-yamada.masahiro@socionext.com (mailing list archive)
State New, archived
Headers show
Series [v2] drm: prefix header search paths with $(srctree)/ | expand

Commit Message

Masahiro Yamada March 29, 2019, 11:32 a.m. UTC 
Currently, the Kbuild core manipulates header search paths in a crazy
way [1].

To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
the search paths in the srctree. Some Makefiles are already written in
that way, but not all. The goal of this work is to make the notation
consistent, and finally get rid of the gross hacks.

Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
("kbuild: do not drop -I without parameter").

[1]: https://patchwork.kernel.org/patch/9632347/

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
---

I put all gpu/drm changes into a single patch because
they are trivial conversion.

If you are interested in the big picture of this work,
the full patch set is available at the following URL.

git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git build-test


Changes in v2:
  - fix up the new driver komeda
  - Add Sam's Reviewed-by

 drivers/gpu/drm/amd/amdgpu/Makefile         | 2 +-
 drivers/gpu/drm/amd/lib/Makefile            | 2 +-
 drivers/gpu/drm/arm/display/komeda/Makefile | 4 ++--
 drivers/gpu/drm/i915/gvt/Makefile           | 2 +-
 drivers/gpu/drm/msm/Makefile                | 6 +++---
 drivers/gpu/drm/nouveau/Kbuild              | 8 ++++----
 6 files changed, 12 insertions(+), 12 deletions(-)

Comments

Masahiro Yamada April 26, 2019, 1:36 a.m. UTC | #1 
Hi.


On Fri, Mar 29, 2019 at 8:37 PM Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
>
> Currently, the Kbuild core manipulates header search paths in a crazy
> way [1].
>
> To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
> the search paths in the srctree. Some Makefiles are already written in
> that way, but not all. The goal of this work is to make the notation
> consistent, and finally get rid of the gross hacks.
>
> Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
> ("kbuild: do not drop -I without parameter").
>
> [1]: https://patchwork.kernel.org/patch/9632347/
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> ---
>
> I put all gpu/drm changes into a single patch because
> they are trivial conversion.
>
> If you are interested in the big picture of this work,
> the full patch set is available at the following URL.
>
> git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git build-test


Is somebody taking care of this?



>
> Changes in v2:
>   - fix up the new driver komeda
>   - Add Sam's Reviewed-by
>
>  drivers/gpu/drm/amd/amdgpu/Makefile         | 2 +-
>  drivers/gpu/drm/amd/lib/Makefile            | 2 +-
>  drivers/gpu/drm/arm/display/komeda/Makefile | 4 ++--
>  drivers/gpu/drm/i915/gvt/Makefile           | 2 +-
>  drivers/gpu/drm/msm/Makefile                | 6 +++---
>  drivers/gpu/drm/nouveau/Kbuild              | 8 ++++----
>  6 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
> index 466da59..62bf9da 100644
> --- a/drivers/gpu/drm/amd/amdgpu/Makefile
> +++ b/drivers/gpu/drm/amd/amdgpu/Makefile
> @@ -23,7 +23,7 @@
>  # Makefile for the drm device driver.  This driver provides support for the
>  # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
>
> -FULL_AMD_PATH=$(src)/..
> +FULL_AMD_PATH=$(srctree)/$(src)/..
>  DISPLAY_FOLDER_NAME=display
>  FULL_AMD_DISPLAY_PATH = $(FULL_AMD_PATH)/$(DISPLAY_FOLDER_NAME)
>
> diff --git a/drivers/gpu/drm/amd/lib/Makefile b/drivers/gpu/drm/amd/lib/Makefile
> index 6902430..d534992 100644
> --- a/drivers/gpu/drm/amd/lib/Makefile
> +++ b/drivers/gpu/drm/amd/lib/Makefile
> @@ -27,6 +27,6 @@
>  # driver components or later moved to kernel/lib for sharing with
>  # other drivers.
>
> -ccflags-y := -I$(src)/../include
> +ccflags-y := -I $(srctree)/$(src)/../include
>
>  obj-$(CONFIG_CHASH) += chash.o
> diff --git a/drivers/gpu/drm/arm/display/komeda/Makefile b/drivers/gpu/drm/arm/display/komeda/Makefile
> index 1b875e5..a72e30c 100644
> --- a/drivers/gpu/drm/arm/display/komeda/Makefile
> +++ b/drivers/gpu/drm/arm/display/komeda/Makefile
> @@ -1,8 +1,8 @@
>  # SPDX-License-Identifier: GPL-2.0
>
>  ccflags-y := \
> -       -I$(src)/../include \
> -       -I$(src)
> +       -I $(srctree)/$(src)/../include \
> +       -I $(srctree)/$(src)
>
>  komeda-y := \
>         komeda_drv.o \
> diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
> index 271fb46..ea8324a 100644
> --- a/drivers/gpu/drm/i915/gvt/Makefile
> +++ b/drivers/gpu/drm/i915/gvt/Makefile
> @@ -5,5 +5,5 @@ GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
>         execlist.o scheduler.o sched_policy.o mmio_context.o cmd_parser.o debugfs.o \
>         fb_decoder.o dmabuf.o page_track.o
>
> -ccflags-y                              += -I$(src) -I$(src)/$(GVT_DIR)
> +ccflags-y                              += -I $(srctree)/$(src) -I $(srctree)/$(src)/$(GVT_DIR)/
>  i915-y                                 += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
> diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
> index 56a70c7..b7b1ebd 100644
> --- a/drivers/gpu/drm/msm/Makefile
> +++ b/drivers/gpu/drm/msm/Makefile
> @@ -1,7 +1,7 @@
>  # SPDX-License-Identifier: GPL-2.0
> -ccflags-y := -Idrivers/gpu/drm/msm
> -ccflags-y += -Idrivers/gpu/drm/msm/disp/dpu1
> -ccflags-$(CONFIG_DRM_MSM_DSI) += -Idrivers/gpu/drm/msm/dsi
> +ccflags-y := -I $(srctree)/$(src)
> +ccflags-y += -I $(srctree)/$(src)/disp/dpu1
> +ccflags-$(CONFIG_DRM_MSM_DSI) += -I $(srctree)/$(src)/dsi
>
>  msm-y := \
>         adreno/adreno_device.o \
> diff --git a/drivers/gpu/drm/nouveau/Kbuild b/drivers/gpu/drm/nouveau/Kbuild
> index ea3035e..4fae728 100644
> --- a/drivers/gpu/drm/nouveau/Kbuild
> +++ b/drivers/gpu/drm/nouveau/Kbuild
> @@ -1,7 +1,7 @@
> -ccflags-y += -I$(src)/include
> -ccflags-y += -I$(src)/include/nvkm
> -ccflags-y += -I$(src)/nvkm
> -ccflags-y += -I$(src)
> +ccflags-y += -I $(srctree)/$(src)/include
> +ccflags-y += -I $(srctree)/$(src)/include/nvkm
> +ccflags-y += -I $(srctree)/$(src)/nvkm
> +ccflags-y += -I $(srctree)/$(src)
>
>  # NVKM - HW resource manager
>  #- code also used by various userspace tools/tests
> --
> 2.7.4
>
Dave Airlie April 26, 2019, 2:18 a.m. UTC | #2 
On Fri, 26 Apr 2019 at 11:46, Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
>
> Hi.
>
>
> On Fri, Mar 29, 2019 at 8:37 PM Masahiro Yamada
> <yamada.masahiro@socionext.com> wrote:
> >
> > Currently, the Kbuild core manipulates header search paths in a crazy
> > way [1].
> >
> > To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
> > the search paths in the srctree. Some Makefiles are already written in
> > that way, but not all. The goal of this work is to make the notation
> > consistent, and finally get rid of the gross hacks.
> >
> > Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
> > ("kbuild: do not drop -I without parameter").
> >
> > [1]: https://patchwork.kernel.org/patch/9632347/
> >
> > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> > Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> > ---
> >
> > I put all gpu/drm changes into a single patch because
> > they are trivial conversion.
> >
> > If you are interested in the big picture of this work,
> > the full patch set is available at the following URL.
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git build-test
>
>
> Is somebody taking care of this?
>

Are you expecting this to be merged in the drm tree? if so please
indicate that when posting.

I'd assumed this would go via kbuild tree.

If the later,
Acked-by: Dave Airlie <airlied@redhat.com>
Dave.
Masahiro Yamada April 26, 2019, 2:25 a.m. UTC | #3 
Hi Dave,

> -----Original Message-----
> From: Dave Airlie [mailto:airlied@gmail.com]
> Sent: Friday, April 26, 2019 11:19 AM
> To: Yamada, Masahiro/山田 真弘 <yamada.masahiro@socionext.com>
> Cc: David Airlie <airlied@linux.ie>; Daniel Vetter <daniel@ffwll.ch>;
> dri-devel <dri-devel@lists.freedesktop.org>; nouveau
> <nouveau@lists.freedesktop.org>; Sam Ravnborg <sam@ravnborg.org>; David
> (ChunMing) Zhou <David1.Zhou@amd.com>; amd-gfx mailing list
> <amd-gfx@lists.freedesktop.org>; James (Qian) Wang
> <james.qian.wang@arm.com>; Ben Skeggs <bskeggs@redhat.com>;
> linux-arm-msm <linux-arm-msm@vger.kernel.org>; Intel Graphics
> Development <intel-gfx@lists.freedesktop.org>;
> intel-gvt-dev@lists.freedesktop.org; Linux Kernel Mailing List
> <linux-kernel@vger.kernel.org>; Christian König
> <christian.koenig@amd.com>; Alex Deucher <alexander.deucher@amd.com>;
> freedreno@lists.freedesktop.org
> Subject: Re: [Intel-gfx] [PATCH v2] drm: prefix header search paths with
> $(srctree)/
> 
> On Fri, 26 Apr 2019 at 11:46, Masahiro Yamada
> <yamada.masahiro@socionext.com> wrote:
> >
> > Hi.
> >
> >
> > On Fri, Mar 29, 2019 at 8:37 PM Masahiro Yamada
> > <yamada.masahiro@socionext.com> wrote:
> > >
> > > Currently, the Kbuild core manipulates header search paths in a crazy
> > > way [1].
> > >
> > > To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
> > > the search paths in the srctree. Some Makefiles are already written
> in
> > > that way, but not all. The goal of this work is to make the notation
> > > consistent, and finally get rid of the gross hacks.
> > >
> > > Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
> > > ("kbuild: do not drop -I without parameter").
> > >
> > > [1]: https://patchwork.kernel.org/patch/9632347/
> > >
> > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> > > Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> > > ---
> > >
> > > I put all gpu/drm changes into a single patch because
> > > they are trivial conversion.
> > >
> > > If you are interested in the big picture of this work,
> > > the full patch set is available at the following URL.
> > >
> > >
> git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.g
> it build-test
> >
> >
> > Is somebody taking care of this?
> >
> 
> Are you expecting this to be merged in the drm tree? if so please
> indicate that when posting.


Sorry for unclearness.

Could you apply this to your drm tree?

Thanks.




> I'd assumed this would go via kbuild tree.
> 
> If the later,
> Acked-by: Dave Airlie <airlied@redhat.com>
> Dave.
Dave Airlie April 26, 2019, 2:56 a.m. UTC | #4 
Daniel, drm-misc-next-fixes?

Dave.

On Fri, 26 Apr 2019 at 12:25, <yamada.masahiro@socionext.com> wrote:
>
> Hi Dave,
>
> > -----Original Message-----
> > From: Dave Airlie [mailto:airlied@gmail.com]
> > Sent: Friday, April 26, 2019 11:19 AM
> > To: Yamada, Masahiro/山田 真弘 <yamada.masahiro@socionext.com>
> > Cc: David Airlie <airlied@linux.ie>; Daniel Vetter <daniel@ffwll.ch>;
> > dri-devel <dri-devel@lists.freedesktop.org>; nouveau
> > <nouveau@lists.freedesktop.org>; Sam Ravnborg <sam@ravnborg.org>; David
> > (ChunMing) Zhou <David1.Zhou@amd.com>; amd-gfx mailing list
> > <amd-gfx@lists.freedesktop.org>; James (Qian) Wang
> > <james.qian.wang@arm.com>; Ben Skeggs <bskeggs@redhat.com>;
> > linux-arm-msm <linux-arm-msm@vger.kernel.org>; Intel Graphics
> > Development <intel-gfx@lists.freedesktop.org>;
> > intel-gvt-dev@lists.freedesktop.org; Linux Kernel Mailing List
> > <linux-kernel@vger.kernel.org>; Christian König
> > <christian.koenig@amd.com>; Alex Deucher <alexander.deucher@amd.com>;
> > freedreno@lists.freedesktop.org
> > Subject: Re: [Intel-gfx] [PATCH v2] drm: prefix header search paths with
> > $(srctree)/
> >
> > On Fri, 26 Apr 2019 at 11:46, Masahiro Yamada
> > <yamada.masahiro@socionext.com> wrote:
> > >
> > > Hi.
> > >
> > >
> > > On Fri, Mar 29, 2019 at 8:37 PM Masahiro Yamada
> > > <yamada.masahiro@socionext.com> wrote:
> > > >
> > > > Currently, the Kbuild core manipulates header search paths in a crazy
> > > > way [1].
> > > >
> > > > To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
> > > > the search paths in the srctree. Some Makefiles are already written
> > in
> > > > that way, but not all. The goal of this work is to make the notation
> > > > consistent, and finally get rid of the gross hacks.
> > > >
> > > > Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
> > > > ("kbuild: do not drop -I without parameter").
> > > >
> > > > [1]: https://patchwork.kernel.org/patch/9632347/
> > > >
> > > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> > > > Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> > > > ---
> > > >
> > > > I put all gpu/drm changes into a single patch because
> > > > they are trivial conversion.
> > > >
> > > > If you are interested in the big picture of this work,
> > > > the full patch set is available at the following URL.
> > > >
> > > >
> > git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.g
> > it build-test
> > >
> > >
> > > Is somebody taking care of this?
> > >
> >
> > Are you expecting this to be merged in the drm tree? if so please
> > indicate that when posting.
>
>
> Sorry for unclearness.
>
> Could you apply this to your drm tree?
>
> Thanks.
>
>
>
>
> > I'd assumed this would go via kbuild tree.
> >
> > If the later,
> > Acked-by: Dave Airlie <airlied@redhat.com>
> > Dave.
Daniel Vetter April 26, 2019, 3:05 p.m. UTC | #5 
On Fri, Apr 26, 2019 at 12:56:48PM +1000, Dave Airlie wrote:
> Daniel, drm-misc-next-fixes?

Makes sense. Pushed.

Cheers, Daniel

> 
> Dave.
> 
> On Fri, 26 Apr 2019 at 12:25, <yamada.masahiro@socionext.com> wrote:
> >
> > Hi Dave,
> >
> > > -----Original Message-----
> > > From: Dave Airlie [mailto:airlied@gmail.com]
> > > Sent: Friday, April 26, 2019 11:19 AM
> > > To: Yamada, Masahiro/山田 真弘 <yamada.masahiro@socionext.com>
> > > Cc: David Airlie <airlied@linux.ie>; Daniel Vetter <daniel@ffwll.ch>;
> > > dri-devel <dri-devel@lists.freedesktop.org>; nouveau
> > > <nouveau@lists.freedesktop.org>; Sam Ravnborg <sam@ravnborg.org>; David
> > > (ChunMing) Zhou <David1.Zhou@amd.com>; amd-gfx mailing list
> > > <amd-gfx@lists.freedesktop.org>; James (Qian) Wang
> > > <james.qian.wang@arm.com>; Ben Skeggs <bskeggs@redhat.com>;
> > > linux-arm-msm <linux-arm-msm@vger.kernel.org>; Intel Graphics
> > > Development <intel-gfx@lists.freedesktop.org>;
> > > intel-gvt-dev@lists.freedesktop.org; Linux Kernel Mailing List
> > > <linux-kernel@vger.kernel.org>; Christian König
> > > <christian.koenig@amd.com>; Alex Deucher <alexander.deucher@amd.com>;
> > > freedreno@lists.freedesktop.org
> > > Subject: Re: [Intel-gfx] [PATCH v2] drm: prefix header search paths with
> > > $(srctree)/
> > >
> > > On Fri, 26 Apr 2019 at 11:46, Masahiro Yamada
> > > <yamada.masahiro@socionext.com> wrote:
> > > >
> > > > Hi.
> > > >
> > > >
> > > > On Fri, Mar 29, 2019 at 8:37 PM Masahiro Yamada
> > > > <yamada.masahiro@socionext.com> wrote:
> > > > >
> > > > > Currently, the Kbuild core manipulates header search paths in a crazy
> > > > > way [1].
> > > > >
> > > > > To fix this mess, I want all Makefiles to add explicit $(srctree)/ to
> > > > > the search paths in the srctree. Some Makefiles are already written
> > > in
> > > > > that way, but not all. The goal of this work is to make the notation
> > > > > consistent, and finally get rid of the gross hacks.
> > > > >
> > > > > Having whitespaces after -I does not matter since commit 48f6e3cf5bc6
> > > > > ("kbuild: do not drop -I without parameter").
> > > > >
> > > > > [1]: https://patchwork.kernel.org/patch/9632347/
> > > > >
> > > > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> > > > > Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> > > > > ---
> > > > >
> > > > > I put all gpu/drm changes into a single patch because
> > > > > they are trivial conversion.
> > > > >
> > > > > If you are interested in the big picture of this work,
> > > > > the full patch set is available at the following URL.
> > > > >
> > > > >
> > > git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.g
> > > it build-test
> > > >
> > > >
> > > > Is somebody taking care of this?
> > > >
> > >
> > > Are you expecting this to be merged in the drm tree? if so please
> > > indicate that when posting.
> >
> >
> > Sorry for unclearness.
> >
> > Could you apply this to your drm tree?
> >
> > Thanks.
> >
> >
> >
> >
> > > I'd assumed this would go via kbuild tree.
> > >
> > > If the later,
> > > Acked-by: Dave Airlie <airlied@redhat.com>
> > > Dave.
diff mbox series

Patch

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index 466da59..62bf9da 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -23,7 +23,7 @@ 
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
-FULL_AMD_PATH=$(src)/..
+FULL_AMD_PATH=$(srctree)/$(src)/..
 DISPLAY_FOLDER_NAME=display
 FULL_AMD_DISPLAY_PATH = $(FULL_AMD_PATH)/$(DISPLAY_FOLDER_NAME)
 
diff --git a/drivers/gpu/drm/amd/lib/Makefile b/drivers/gpu/drm/amd/lib/Makefile
index 6902430..d534992 100644
--- a/drivers/gpu/drm/amd/lib/Makefile
+++ b/drivers/gpu/drm/amd/lib/Makefile
@@ -27,6 +27,6 @@ 
 # driver components or later moved to kernel/lib for sharing with
 # other drivers.
 
-ccflags-y := -I$(src)/../include
+ccflags-y := -I $(srctree)/$(src)/../include
 
 obj-$(CONFIG_CHASH) += chash.o
diff --git a/drivers/gpu/drm/arm/display/komeda/Makefile b/drivers/gpu/drm/arm/display/komeda/Makefile
index 1b875e5..a72e30c 100644
--- a/drivers/gpu/drm/arm/display/komeda/Makefile
+++ b/drivers/gpu/drm/arm/display/komeda/Makefile
@@ -1,8 +1,8 @@ 
 # SPDX-License-Identifier: GPL-2.0
 
 ccflags-y := \
-	-I$(src)/../include \
-	-I$(src)
+	-I $(srctree)/$(src)/../include \
+	-I $(srctree)/$(src)
 
 komeda-y := \
 	komeda_drv.o \
diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
index 271fb46..ea8324a 100644
--- a/drivers/gpu/drm/i915/gvt/Makefile
+++ b/drivers/gpu/drm/i915/gvt/Makefile
@@ -5,5 +5,5 @@  GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
 	execlist.o scheduler.o sched_policy.o mmio_context.o cmd_parser.o debugfs.o \
 	fb_decoder.o dmabuf.o page_track.o
 
-ccflags-y				+= -I$(src) -I$(src)/$(GVT_DIR)
+ccflags-y				+= -I $(srctree)/$(src) -I $(srctree)/$(src)/$(GVT_DIR)/
 i915-y					+= $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 56a70c7..b7b1ebd 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -1,7 +1,7 @@ 
 # SPDX-License-Identifier: GPL-2.0
-ccflags-y := -Idrivers/gpu/drm/msm
-ccflags-y += -Idrivers/gpu/drm/msm/disp/dpu1
-ccflags-$(CONFIG_DRM_MSM_DSI) += -Idrivers/gpu/drm/msm/dsi
+ccflags-y := -I $(srctree)/$(src)
+ccflags-y += -I $(srctree)/$(src)/disp/dpu1
+ccflags-$(CONFIG_DRM_MSM_DSI) += -I $(srctree)/$(src)/dsi
 
 msm-y := \
 	adreno/adreno_device.o \
diff --git a/drivers/gpu/drm/nouveau/Kbuild b/drivers/gpu/drm/nouveau/Kbuild
index ea3035e..4fae728 100644
--- a/drivers/gpu/drm/nouveau/Kbuild
+++ b/drivers/gpu/drm/nouveau/Kbuild
@@ -1,7 +1,7 @@ 
-ccflags-y += -I$(src)/include
-ccflags-y += -I$(src)/include/nvkm
-ccflags-y += -I$(src)/nvkm
-ccflags-y += -I$(src)
+ccflags-y += -I $(srctree)/$(src)/include
+ccflags-y += -I $(srctree)/$(src)/include/nvkm
+ccflags-y += -I $(srctree)/$(src)/nvkm
+ccflags-y += -I $(srctree)/$(src)
 
 # NVKM - HW resource manager
 #- code also used by various userspace tools/tests