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#
# This Makefile was automatically generated; do not edit.
#
###########################################################################
# Makefile for NVIDIA Linux GPU driver kernel modules
###########################################################################
# This makefile is read twice: when a user or nvidia-installer invokes
# 'make', this file is read. It then invokes the Linux kernel's
# Kbuild. Modern versions of Kbuild will then read the Kbuild file in
# this directory. However, old versions of Kbuild will instead read
# this Makefile. For backwards compatibility, when read by Kbuild
# (recognized by KERNELRELEASE not being empty), do nothing but
# include the Kbuild file in this directory.
ifneq ($(KERNELRELEASE),)
include $(src)/Kbuild
else
# Determine the location of the Linux kernel source tree, and of the
# kernel's output tree. Use this to invoke Kbuild, and pass the paths
# to the source and output trees to NVIDIA's Kbuild file via
# NV_KERNEL_{SOURCES,OUTPUT}.
ifdef SYSSRC
KERNEL_SOURCES := $(SYSSRC)
else
KERNEL_UNAME ?= $(shell uname -r)
KERNEL_MODLIB := /lib/modules/$(KERNEL_UNAME)
KERNEL_SOURCES := $(shell ((test -d $(KERNEL_MODLIB)/source && echo $(KERNEL_MODLIB)/source) || (test -d $(KERNEL_MODLIB)/build/source && echo $(KERNEL_MODLIB)/build/source)) || echo $(KERNEL_MODLIB)/build)
endif
KERNEL_OUTPUT := $(KERNEL_SOURCES)
KBUILD_PARAMS :=
ifdef SYSOUT
ifneq ($(SYSOUT), $(KERNEL_SOURCES))
KERNEL_OUTPUT := $(SYSOUT)
KBUILD_PARAMS := KBUILD_OUTPUT=$(KERNEL_OUTPUT)
endif
else
KERNEL_UNAME ?= $(shell uname -r)
KERNEL_MODLIB := /lib/modules/$(KERNEL_UNAME)
# $(filter patter...,text) - Returns all whitespace-separated words in text that
# do match any of the pattern words, removing any words that do not match.
# Set the KERNEL_OUTPUT only if either $(KERNEL_MODLIB)/source or
# $(KERNEL_MODLIB)/build/source path matches the KERNEL_SOURCES.
ifneq ($(filter $(KERNEL_SOURCES),$(KERNEL_MODLIB)/source $(KERNEL_MODLIB)/build/source),)
KERNEL_OUTPUT := $(KERNEL_MODLIB)/build
KBUILD_PARAMS := KBUILD_OUTPUT=$(KERNEL_OUTPUT)
endif
endif
# If CC hasn't been set explicitly, check the value of CONFIG_CC_VERSION_TEXT.
# Look for the compiler specified there, and use it by default, if found.
ifeq ($(origin CC),default)
cc_version_text=$(firstword $(shell . $(KERNEL_OUTPUT)/.config; \
echo "$$CONFIG_CC_VERSION_TEXT"))
ifneq ($(cc_version_text),)
ifeq ($(shell command -v $(cc_version_text)),)
$(warning WARNING: Unable to locate the compiler $(cc_version_text) \
from CONFIG_CC_VERSION_TEXT in the kernel configuration.)
else
CC=$(cc_version_text)
endif
endif
endif
CC ?= cc
LD ?= ld
OBJDUMP ?= objdump
ifndef ARCH
ARCH := $(shell uname -m | sed -e 's/i.86/i386/' \
-e 's/armv[0-7]\w\+/arm/' \
-e 's/aarch64/arm64/' \
-e 's/ppc64le/powerpc/' \
-e 's/riscv64/riscv/' \
)
endif
KERNEL_ARCH = $(ARCH)
ifneq ($(filter $(ARCH),i386 x86_64),)
KERNEL_ARCH = x86
else
ifeq ($(filter $(ARCH),arm64 powerpc),)
$(error Unsupported architecture $(ARCH))
endif
endif
NV_KERNEL_MODULES ?= $(wildcard nvidia nvidia-uvm nvidia-vgpu-vfio nvidia-modeset nvidia-drm nvidia-peermem)
NV_KERNEL_MODULES := $(filter-out $(NV_EXCLUDE_KERNEL_MODULES), \
$(NV_KERNEL_MODULES))
INSTALL_MOD_DIR ?= kernel/drivers/video
NV_VERBOSE ?=
SPECTRE_V2_RETPOLINE ?= 0
ifeq ($(NV_VERBOSE),1)
KBUILD_PARAMS += V=1
endif
KBUILD_PARAMS += -C $(KERNEL_SOURCES) M=$(CURDIR)
KBUILD_PARAMS += ARCH=$(ARCH)
KBUILD_PARAMS += NV_KERNEL_SOURCES=$(KERNEL_SOURCES)
KBUILD_PARAMS += NV_KERNEL_OUTPUT=$(KERNEL_OUTPUT)
KBUILD_PARAMS += NV_KERNEL_MODULES="$(NV_KERNEL_MODULES)"
KBUILD_PARAMS += INSTALL_MOD_DIR="$(INSTALL_MOD_DIR)"
KBUILD_PARAMS += NV_SPECTRE_V2=$(SPECTRE_V2_RETPOLINE)
.PHONY: modules module clean clean_conftest modules_install
modules clean modules_install:
@$(MAKE) "LD=$(LD)" "CC=$(CC)" "OBJDUMP=$(OBJDUMP)" $(KBUILD_PARAMS) $@
@if [ "$@" = "modules" ]; then \
for module in $(NV_KERNEL_MODULES); do \
if [ -x split-object-file.sh ]; then \
./split-object-file.sh $$module.ko; \
fi; \
done; \
fi
# Compatibility target for scripts that may be directly calling the
# "module" target from the old build system.
module: modules
# Check if the any of kernel module linker scripts exist. If they do, pass
# them as linker options (via variable NV_MODULE_LD_SCRIPTS) while building
# the kernel interface object files. These scripts do some processing on the
# module symbols on which the Linux kernel's module resolution is dependent
# and hence must be used whenever present.
LD_SCRIPT ?= $(KERNEL_SOURCES)/scripts/module-common.lds \
$(KERNEL_SOURCES)/arch/$(KERNEL_ARCH)/kernel/module.lds \
$(KERNEL_OUTPUT)/arch/$(KERNEL_ARCH)/module.lds \
$(KERNEL_OUTPUT)/scripts/module.lds
NV_MODULE_COMMON_SCRIPTS := $(foreach s, $(wildcard $(LD_SCRIPT)), -T $(s))
# Use $* to match the stem % in the kernel interface file %-linux.o. Replace
# "nv" with "nvidia" in $* as appropriate: e.g. nv-modeset-linux.o links
# nvidia-modeset.mod.o and nvidia-modeset/nv-modeset-interface.o. The kernel
# interface file must have the .mod.o object linked into it: otherwise, the
# kernel module produced by linking the interface against its corresponding
# core object file will not be loadable. The .mod.o file is built as part of
# the MODPOST process (stage 2), so the rule to build the kernel interface
# cannot be defined in the *Kbuild files, which are only used during stage 1.
%-linux.o: modules
$(LD) $(NV_MODULE_COMMON_SCRIPTS) -r -o $@ \
$(subst nv,nvidia,$*).mod.o $(subst nv,nvidia,$*)/$*-interface.o
# Kbuild's "clean" rule won't clean up the conftest headers on its own, and
# clean-dirs doesn't appear to work as advertised.
clean_conftest:
$(RM) -r conftest
clean: clean_conftest
endif # KERNELRELEASE
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