commit: 9cca413557e341beaa8f9289915e175e6d51d752
Author: Ionen Wolkens <ionen <AT> gentoo <DOT> org>
AuthorDate: Fri Jun 11 16:57:43 2021 +0000
Commit: Ionen Wolkens <ionen <AT> gentoo <DOT> org>
CommitDate: Fri Jun 11 17:48:05 2021 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9cca4135
x11-drivers/nvidia-drivers: add basic clang+thinlto kernel support
Only adding this experimental support to >=465.31, still very little
testing has been done but should be better than always failing.
To use this there's no need to do anything beside having a kernel
built with clang+(thin)lto (normally through LLVM=1 LLVM_IAS=1).
Note to not set "LD" as it'll currently fail with USE=tools for
other reasons.
Signed-off-by: Ionen Wolkens <ionen <AT> gentoo.org>
.../nvidia-drivers/nvidia-drivers-465.31.ebuild | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/x11-drivers/nvidia-drivers/nvidia-drivers-465.31.ebuild
b/x11-drivers/nvidia-drivers/nvidia-drivers-465.31.ebuild
index d327e03ff8f..4807a3e0f30 100644
--- a/x11-drivers/nvidia-drivers/nvidia-drivers-465.31.ebuild
+++ b/x11-drivers/nvidia-drivers/nvidia-drivers-465.31.ebuild
@@ -101,8 +101,6 @@ pkg_setup() {
Cannot be directly selected in the kernel's menuconfig, so enable
options such as CONFIG_DRM_FBDEV_EMULATION instead."
- BUILD_PARAMS='NV_VERBOSE=1 IGNORE_CC_MISMATCH=yes SYSSRC="${KV_DIR}"
SYSOUT="${KV_OUT_DIR}"'
- BUILD_TARGETS="modules" # defaults' clean sometimes deletes modules
MODULE_NAMES="
nvidia(video:kernel)
nvidia-drm(video:kernel)
@@ -112,7 +110,25 @@ pkg_setup() {
linux-mod_pkg_setup
- if [[ ${MERGE_TYPE} != binary ]] && kernel_is -gt ${NV_KERNEL_MAX/./ };
then
+ [[ ${MERGE_TYPE} == binary ]] && return
+
+ BUILD_PARAMS='NV_VERBOSE=1 IGNORE_CC_MISMATCH=yes SYSSRC="${KV_DIR}"
SYSOUT="${KV_OUT_DIR}"'
+ BUILD_TARGETS="modules" # defaults' clean sometimes deletes modules
+
+ if linux_chkconfig_present CC_IS_CLANG; then
+ ewarn "Warning: building ${PN} with a clang-built kernel is
experimental."
+
+ BUILD_PARAMS+=' CC=${CHOST}-clang'
+ if linux_chkconfig_present LD_IS_LLD; then
+ BUILD_PARAMS+=' LD=ld.lld'
+ if linux_chkconfig_present LTO_CLANG_THIN; then
+ # kernel enables cache by default leading to
sandbox violations
+ BUILD_PARAMS+=' ldflags-y=--thinlto-cache-dir=
LDFLAGS_MODULE=--thinlto-cache-dir='
+ fi
+ fi
+ fi
+
+ if kernel_is -gt ${NV_KERNEL_MAX/./ }; then
ewarn "Kernel ${KV_MAJOR}.${KV_MINOR} is either known to break
this version of nvidia-drivers"
ewarn "or was not tested with it. It is recommended to use one
of:"
ewarn " <=sys-kernel/gentoo-kernel-${NV_KERNEL_MAX}"
