[PATCH] efi_runtime: enable KBUILD_MODPOST_WARN=y to workaround build failures

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

With newer kernels > 5.0, undefined variables now throw an error
rather than a warning.  Force the older warning behaviour so that
dkms builds can pass ADT build testing.

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 efi_runtime/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/efi_runtime/Makefile b/efi_runtime/Makefile
index ae868675..6ba369ce 100644
--- a/efi_runtime/Makefile
+++ b/efi_runtime/Makefile
@@ -17,6 +17,7 @@
 #
 
 KVER ?= `uname -r`
+KBUILD_MODPOST_WARN=y
 obj-m += efi_runtime.o
 all:
 	make -C /lib/modules/$(KVER)/build M=`pwd` modules
-- 
2.20.1