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utils.mk
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#
# Copyright (C) 2008 NVIDIA Corporation
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses>.
#
#
# utils.mk: common Makefile fragment used by nvidia-xconfig,
# nvidia-installer, and nvidia-settings
#
##############################################################################
# The calling Makefile (when building as part of the NVIDIA graphics
# driver) may export any of the following variables; we assign default
# values if they are not exported by the caller
##############################################################################
CC ?= gcc
LD ?= ld
# only set these warnings and optimizations if CFLAGS is unset
CFLAGS ?= -Wall -O2
# always set these -f CFLAGS
CFLAGS += -fno-strict-aliasing -fno-omit-frame-pointer -Wformat=2
CC_ONLY_CFLAGS ?=
LDFLAGS ?=
BIN_LDFLAGS ?=
HOST_CC ?= $(CC)
HOST_LD ?= $(LD)
HOST_CFLAGS ?= $(CFLAGS)
HOST_LDFLAGS ?= $(LDFLAGS)
HOST_BIN_LDFLAGS ?=
# always disable warnings that will break the build
CFLAGS += -Wno-unused-parameter -Wno-format-zero-length
HOST_CFLAGS += -Wno-unused-parameter -Wno-format-zero-length
ifeq ($(DEBUG),1)
STRIP_CMD ?= true
CFLAGS += -O0 -g
else
STRIP_CMD ?= strip
endif
INSTALL ?= install
INSTALL_BIN_ARGS ?= -m 755
INSTALL_LIB_ARGS ?= -m 644
INSTALL_DOC_ARGS ?= -m 644
M4 ?= m4
SED ?= sed
M4 ?= m4
ECHO ?= echo
PRINTF ?= printf
MKDIR ?= mkdir -p
RM ?= rm -f
TOUCH ?= touch
WHOAMI ?= whoami
HOSTNAME_CMD ?= hostname
DATE ?= date
GZIP_CMD ?= gzip
CHMOD ?= chmod
NV_AUTO_DEPEND ?= 1
NV_VERBOSE ?= 0
ifndef TARGET_OS
TARGET_OS := $(shell uname)
endif
ifeq ($(TARGET_OS),Linux)
CFLAGS += -DNV_LINUX
endif
ifeq ($(TARGET_OS),FreeBSD)
CFLAGS += -DNV_BSD
endif
ifeq ($(TARGET_OS),SunOS)
CFLAGS += -DNV_SUNOS
endif
ifndef TARGET_ARCH
TARGET_ARCH := $(shell uname -m)
TARGET_ARCH := $(subst i386,x86,$(TARGET_ARCH))
TARGET_ARCH := $(subst i486,x86,$(TARGET_ARCH))
TARGET_ARCH := $(subst i586,x86,$(TARGET_ARCH))
TARGET_ARCH := $(subst i686,x86,$(TARGET_ARCH))
endif
ifeq ($(TARGET_ARCH),x86)
CFLAGS += -DNV_X86 -DNV_ARCH_BITS=32
endif
ifeq ($(TARGET_ARCH),x86_64)
CFLAGS += -DNV_X86_64 -DNV_ARCH_BITS=64
endif
ifeq ($(TARGET_ARCH),armv7l)
CFLAGS += -DNV_ARMV7 -DNV_ARCH_BITS=32
endif
ifeq ($(TARGET_ARCH),aarch64)
CFLAGS += -DNV_AARCH64 -DNV_ARCH_BITS=64
endif
ifeq ($(TARGET_ARCH),ppc64le)
CFLAGS += -DNV_PPC64LE -DNV_ARCH_BITS=64
endif
ifeq ($(TARGET_OS),Linux)
LIBDL_LIBS = -ldl
else
LIBDL_LIBS =
endif
# This variable controls which floating-point ABI is targeted. For ARM, it
# defaults to "gnueabi" for softfp. Another option is "gnueabihf" for
# hard(fp). This is necessary to pick up the correct rtld_test binary.
# All other architectures default to empty.
ifeq ($(TARGET_ARCH),armv7l)
TARGET_ARCH_ABI ?= gnueabi
endif
TARGET_ARCH_ABI ?=
ifeq ($(TARGET_ARCH_ABI),gnueabi)
CFLAGS += -DNV_GNUEABI
endif
ifeq ($(TARGET_ARCH_ABI),gnueabihf)
CFLAGS += -DNV_GNUEABIHF
endif
OUTPUTDIR ?= _out/$(TARGET_OS)_$(TARGET_ARCH)
OUTPUTDIR_ABSOLUTE ?= $(CURDIR)/$(OUTPUTDIR)
NV_QUIET_COMMAND_REMOVED_TARGET_PREFIX ?=
CFLAGS += $(CC_ONLY_CFLAGS)
##############################################################################
# This makefile uses the $(eval) builtin function, which was added in
# GNU make 3.80. Check that the current make version recognizes it.
# Idea suggested by: http://www.jgc.org/blog/cookbook-sample.pdf
##############################################################################
_eval_available :=
$(eval _eval_available := T)
ifneq ($(_eval_available),T)
$(error This Makefile requires a GNU Make that supports 'eval'. Please upgrade to GNU make 3.80 or later)
endif
##############################################################################
# define variables used when installing the open source utilities from
# the source tarball
##############################################################################
PREFIX ?= /usr/local
BINDIR = $(DESTDIR)$(PREFIX)/bin
LIBDIR = $(DESTDIR)$(PREFIX)/lib
MANDIR = $(DESTDIR)$(PREFIX)/share/man/man1
##############################################################################
# default build rule, so that nothing here in utils.mk accidentally
# gets selected as the default rule
##############################################################################
default build: all
##############################################################################
# get the definition of NVIDIA_VERSION from version.mk
#
# version.mk may be in one of two places: either in $(OUTPUTDIR) when
# building as part of the NVIDIA driver build, or directly in the
# source directory when building from the source tarball
#
# Throw an error if one of these two places did not define NVIDIA_VERSION.
##############################################################################
VERSION_MK := $(wildcard $(OUTPUTDIR)/version.mk version.mk)
include $(VERSION_MK)
ifndef NVIDIA_VERSION
$(error NVIDIA_VERSION undefined)
endif
##############################################################################
# Several of the functions below take an argument that indicates if
# the expression is for the target platform (the system the built
# program is going to run on) or the host platform (the system
# performing the build). The argument is either "HOST" or "TARGET"
# and needs to be converted:
#
# "HOST" -> "HOST_"
# "TARGET" -> ""
#
# and prepended to "CC" or "CFLAGS"
##############################################################################
host_target = $(patsubst HOST,HOST_,$(patsubst TARGET,,$(1)))
host_target_cc = $(call host_target,$(1))CC
host_target_cflags = $(call host_target,$(1))CFLAGS
##############################################################################
# to generate the dependency files, use the compiler's "-MM" option to
# generate output of the form "foo.o : foo.c foo.h"; then, use sed to
# wrap the prerequisites with $(wildcard ...); the wildcard function
# serves as an existence filter, so that files that are later removed
# from the build do not cause stale references. Also, "-MM" will
# cause the compiler to name the target as if it were in the current
# directory ("foo.o: "); use sed to rename the target in the output
# directory ("_out/Linux_x86/foo.o: ") so that the target actually
# applies to the object files produced in the build.
#
# Arguments:
# $(1): whether for host or target platform ("HOST" or "TARGET")
# $(2): source filename
# $(3): object filename
##############################################################################
ifeq ($(NV_AUTO_DEPEND),1)
AUTO_DEP_CMD = && $($(call host_target_cc,$(1))) \
-MM $$($(call host_target_cflags,$(1))) $$< | $$(SED) \
-e "s,: ,: $$$$\(wildcard ," \
-e "s,\([^\\]\)$$$$,\1)," \
-e "s;^$$(addsuffix .o,$$(notdir $$(basename $(2)))): ;$(3): ;" \
> $$(@:.o=.d)
else
AUTO_DEP_CMD =
endif
##############################################################################
# echo minimal compile information in the non-NV_VERBOSE case
#
# NV_MODULE_LOGGING_NAME can be set to prepend quiet build output with a
# label of which build component is being built
##############################################################################
NV_MODULE_LOGGING_NAME ?=
ifeq ($(NV_VERBOSE),0)
quiet_cmd = @$(PRINTF) \
" $(if $(NV_MODULE_LOGGING_NAME),[ %-17.17s ],%s) $(quiet_$(1))\n" \
"$(NV_MODULE_LOGGING_NAME)" && $($(1))
else
quiet_cmd = $($(1))
endif
# define LINK and HOST_LINK to be the same as CC; this is so that,
# even though we use CC to link programs, we can have a different
# quiet rule that uses '$@' as it's arg, rather than '$<'
LINK = $(CC)
HOST_LINK = $(HOST_CC)
# strip NV_QUIET_COMMAND_REMOVED_TARGET_PREFIX from the target string
define_quiet_cmd = $(1) $(patsubst $(NV_QUIET_COMMAND_REMOVED_TARGET_PREFIX)/%,%,$(2))
# define the quiet commands:
quiet_CC = $(call define_quiet_cmd,CC ,$<)
quiet_HOST_CC = $(call define_quiet_cmd,HOST_CC ,$<)
quiet_LINK = $(call define_quiet_cmd,LINK ,$@)
quiet_HOST_LINK = $(call define_quiet_cmd,HOST_LINK ,$@)
quiet_M4 = $(call define_quiet_cmd,M4 ,$<)
quiet_STRIP_CMD = $(call define_quiet_cmd,STRIP ,$@)
##############################################################################
# Tell gmake to delete the target of a rule if it has changed and its
# commands exit with a nonzero exit status.
##############################################################################
.DELETE_ON_ERROR:
##############################################################################
# function to generate a list of object files from their corresponding
# source files using the specified path. The _WITH_DIR variant takes an
# output path as the second argument while the BUILD_OBJECT_LIST defaults
# to using the value of OUTPUTDIR as the output path. example usage:
#
# OBJS = $(call BUILD_OBJECT_LIST_WITH_DIR,$(SRC),$(DIR))
##############################################################################
BUILD_OBJECT_LIST_WITH_DIR = \
$(addprefix $(2)/,$(notdir $(addsuffix .o,$(basename $(1)))))
BUILD_OBJECT_LIST = \
$(call BUILD_OBJECT_LIST_WITH_DIR,$(1),$(OUTPUTDIR))
##############################################################################
# function to generate a list of dependency files from their
# corresponding source files using the specified path. The _WITH_DIR
# variant takes an output path as the second argument while the
# BUILD_DEPENDENCY_LIST default to using the value of OUTPUTDIR as the
# output path. example usage:
#
# DEPS = $(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(SRC),$(DIR))
##############################################################################
BUILD_DEPENDENCY_LIST_WITH_DIR = \
$(addprefix $(2)/,$(notdir $(addsuffix .d,$(basename $(1)))))
BUILD_DEPENDENCY_LIST = \
$(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(1),$(OUTPUTDIR))
##############################################################################
# functions to define a rule to build an object file; the first
# argument for all functions is whether the rule is for the target or
# host platform ("HOST" or "TARGET"), the second argument for all
# functions is the source file to compile.
#
# The _WITH_OBJECT_NAME and _WITH_DIR function name suffixes describe
# the third and possibly fourth arguments based on order. The
# _WITH_OBJECT_NAME argument is the object filename to produce while
# the _WITH_DIR argument is the destination path for the object file.
#
# Example usage:
#
# $(eval $(call DEFINE_OBJECT_RULE,TARGET,foo.c))
#
# Note this also attempts to include the dependency file for this
# source file.
#
# The DEFINE_OBJECT_RULE is functionally equivalent to
# DEFINE_OBJECT_RULE_WITH_OBJECT_NAME, but infers the object file name
# from the source file name (this is normally what you want).
##############################################################################
define DEFINE_OBJECT_RULE_WITH_OBJECT_NAME_WITH_DIR
$(3): $(2)
@$(MKDIR) $(4)
$$(call quiet_cmd,$(call host_target_cc,$(1))) \
$$($(call host_target_cflags,$(1))) -c $$< -o $$@ \
$(call AUTO_DEP_CMD,$(1),$(2),$(3))
-include $$(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(3),$(4))
# declare empty rule for generating dependency file; we generate the
# dependency files implicitly when compiling the source file (see
# AUTO_DEP_CMD above), so we don't want gmake to spend time searching
# for an explicit rule to generate the dependency file
$$(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(3),$(4)): ;
endef
define DEFINE_OBJECT_RULE_WITH_OBJECT_NAME
$$(eval $$(call DEFINE_OBJECT_RULE_WITH_OBJECT_NAME_WITH_DIR,$(1),$(2),\
$(3),$(OUTPUTDIR)))
endef
define DEFINE_OBJECT_RULE_WITH_DIR
$$(eval $$(call DEFINE_OBJECT_RULE_WITH_OBJECT_NAME_WITH_DIR,$(1),$(2),\
$$(call BUILD_OBJECT_LIST_WITH_DIR,$(2),$(3)),$(3)))
endef
define DEFINE_OBJECT_RULE
$$(eval $$(call DEFINE_OBJECT_RULE_WITH_DIR,$(1),$(2),$(OUTPUTDIR)))
endef
##############################################################################
# STAMP_C - this is a source file that is generated during the build
# to capture information about the build environment for the utility.
#
# The DEFINE_STAMP_C_RULE function is used to define the rule for
# generating STAMP_C. First argument is a list of dependencies for
# STAMP_C (g_stamp.o is filtered out of the list); second argument is
# the name of the program being built.
#
# The includer of utils.mk should add $(STAMP_C) to its list of source
# files
##############################################################################
STAMP_C = $(OUTPUTDIR)/g_stamp.c
define DEFINE_STAMP_C_RULE
$$(STAMP_C): $$(filter-out \
$$(call BUILD_OBJECT_LIST,$$(STAMP_C)),$(1)) \
$$(VERSION_MK)
@ $$(RM) $$@
@ $$(PRINTF) "%s" "const char NV_ID[] = \"nvidia id: " >> $$@
@ $$(PRINTF) "%s" "$(2): " >> $$@
@ $$(PRINTF) "%s" "version $$(NVIDIA_VERSION) " >> $$@
@ $$(PRINTF) "%s" "($$(shell $$(WHOAMI))" >> $$@
@ $$(PRINTF) "%s" "@$$(shell $$(HOSTNAME_CMD))) " >> $$@
@ $$(PRINTF) "%s\n" "$$(shell $(DATE))\";" >> $$@
@ $$(PRINTF) "%s\n" "const char *pNV_ID = NV_ID + 11;" >> $$@
endef