[PATCH v2] igb_uio: pass MODULE_CFLAGS in new Kbuild

[luca.boccassi@gmail.com]

From: Luca Boccassi <bluca@debian.org>

With the legacy build system MODULE_CFLAGS can be set to pass compiler
flags specific for the kernel modules builds.
This is used currently by Ubuntu and Debian.
Set ccflags-y in the Kbuild to achieve the same result with Meson, and
to keep backward compatbility with older scripts.

Fixes regression in Ubuntu/Debian when the Kbuild is included in the
DKMS source package, as DKMS will pick it up silently by default if
present, causing the MODULE_CFLAGS to be ignored.

Fixes: a52f4574f798 ("igb_uio: build with meson")
Cc: stable@dpdk.org

Signed-off-by: Luca Boccassi <bluca@debian.org>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
v2: forgot --signed-off, added

 kernel/linux/igb_uio/Kbuild | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/linux/igb_uio/Kbuild b/kernel/linux/igb_uio/Kbuild
index 98c98fe52..3ab85c411 100644
--- a/kernel/linux/igb_uio/Kbuild
+++ b/kernel/linux/igb_uio/Kbuild
@@ -1 +1,2 @@
+ccflags-y := $(MODULE_CFLAGS)
 obj-m := igb_uio.o
-- 
2.14.2