Bug#878677: nvidia-kernel-dkms:amd64: conftest fails with CONFIG_GCC_PLUGINS

[Tomas Janousek]

Package: nvidia-kernel-dkms
Version: 375.82-4
Severity: normal
Tags: patch

I have a vanilla kernel with CONFIG_GCC_PLUGINS, CONFIG_GCC_PLUGIN_STRUCTLEAK
and CONFIG_GCC_PLUGIN_RANDSTRUCT and conftest fails because KBUILD_CFLAGS
contains the following:

    -fplugin=./scripts/gcc-plugins/structleak_plugin.so -fplugin=./scripts/gcc-plugins/randomize_layout_plugin.so

but conftest runs with a different pwd than the module build itself.

I'm attaching a patch inspired by
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/scripts/Kbuild.include?h=v4.13.7#n118
that fixes the build.

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (980, 'testing'), (980, 'stable'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (500, 'stable'), (200, 'experimental'), (1, 'experimental-debug')
Architecture: i386 (x86_64)
Foreign Architectures: amd64

Kernel: Linux 4.13.7-lis64+ (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=cs_CZ.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8), LANGUAGE=cs_CZ.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages nvidia-kernel-dkms:amd64 depends on:
ii  dkms                                               2.3-3
ii  nvidia-installer-cleanup                           20151021+4
ii  nvidia-kernel-support [nvidia-kernel-support--v1]  375.82-4

Versions of packages nvidia-kernel-dkms:amd64 recommends:
ii  libcuda1       375.82-4
ii  nvidia-driver  375.82-4

nvidia-kernel-dkms:amd64 suggests no packages.

-- no debconf information

-- debsums errors found:
debsums: changed file /usr/src/nvidia-current-375.82/Kbuild (from nvidia-kernel-dkms:amd64 package)

-- 
Tomáš Janoušek, a.k.a. Pivník, a.k.a. Liskni_si, http://work.lisk.in/
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