1# 2# Copyright (C) 2008 NVIDIA Corporation 3# 4# Permission is hereby granted, free of charge, to any person obtaining a 5# copy of this software and associated documentation files (the "Software"), 6# to deal in the Software without restriction, including without limitation 7# the rights to use, copy, modify, merge, publish, distribute, sublicense, 8# and/or sell copies of the Software, and to permit persons to whom the 9# Software is furnished to do so, subject to the following conditions: 10# 11# The above copyright notice and this permission notice shall be included in 12# all copies or substantial portions of the Software. 13# 14# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20# DEALINGS IN THE SOFTWARE. 21# 22# 23# utils.mk: common Makefile fragment used by nvidia-xconfig, 24# nvidia-installer, and nvidia-settings 25# 26 27 28 29############################################################################## 30# The calling Makefile (when building as part of the NVIDIA graphics 31# driver) may export any of the following variables; we assign default 32# values if they are not exported by the caller 33############################################################################## 34 35CC ?= gcc 36CXX ?= g++ 37LD ?= ld 38AR ?= ar 39# only set these warnings if CFLAGS is unset 40CFLAGS ?= -Wall 41# always set these -f CFLAGS 42CFLAGS += -fno-strict-aliasing -fno-omit-frame-pointer -Wformat=2 43CC_ONLY_CFLAGS ?= -Wstrict-prototypes -Wold-style-definition 44CXX_ONLY_CFLAGS ?= 45LDFLAGS ?= 46BIN_LDFLAGS ?= 47EXTRA_CFLAGS ?= 48 49STACK_USAGE_WARNING ?= 50CFLAGS += $(if $(STACK_USAGE_WARNING),-Wstack-usage=$(STACK_USAGE_WARNING)) 51 52HOST_CC ?= $(CC) 53HOST_LD ?= $(LD) 54HOST_CFLAGS ?= $(CFLAGS) 55HOST_CC_ONLY_CFLAGS ?= 56HOST_CXX_ONLY_CFLAGS ?= 57HOST_LDFLAGS ?= $(LDFLAGS) 58HOST_BIN_LDFLAGS ?= 59 60# always disable warnings that will break the build 61CC_ONLY_CFLAGS += -Wno-format-zero-length 62CFLAGS += -Wno-unused-parameter 63HOST_CC_ONLY_CFLAGS += -Wno-format-zero-length 64HOST_CFLAGS += -Wno-unused-parameter 65 66# Treat warnings as errors, if requested 67WARNINGS_AS_ERRORS ?= 68CFLAGS += $(if $(WARNINGS_AS_ERRORS),-Werror) 69 70DEBUG ?= 71DEVELOP ?= 72 73ifeq ($(DEBUG),1) 74 STRIP_CMD ?= true 75 DO_STRIP ?= 76 CFLAGS += -O0 -g 77 CFLAGS += -DDEBUG=1 78else 79 CFLAGS += -O2 80endif 81 82ifeq ($(DEVELOP),1) 83 STRIP_CMD ?= true 84 DO_STRIP ?= 85 CFLAGS += -DDEVELOP=1 86endif 87 88CFLAGS += $(EXTRA_CFLAGS) 89 90STRIP_CMD ?= strip 91DO_STRIP ?= 1 92 93INSTALL ?= install 94INSTALL_BIN_ARGS ?= -m 755 95INSTALL_LIB_ARGS ?= -m 644 96INSTALL_DOC_ARGS ?= -m 644 97 98M4 ?= m4 99SED ?= sed 100M4 ?= m4 101ECHO ?= echo 102PRINTF ?= printf 103MKDIR ?= mkdir -p 104RM ?= rm -f 105TOUCH ?= touch 106HARDLINK ?= ln -f 107DATE ?= date 108GZIP_CMD ?= gzip 109CHMOD ?= chmod 110OBJCOPY ?= objcopy 111XZ ?= xz 112WHOAMI ?= whoami 113 114ifndef HOSTNAME 115 HOSTNAME = $(shell hostname) 116endif 117 118 119NV_AUTO_DEPEND ?= 1 120NV_VERBOSE ?= 0 121 122ifndef TARGET_OS 123 TARGET_OS := $(shell uname) 124endif 125 126ifeq ($(TARGET_OS),Linux) 127 CFLAGS += -DNV_LINUX 128endif 129 130ifeq ($(TARGET_OS),FreeBSD) 131 CFLAGS += -DNV_BSD 132endif 133 134ifeq ($(TARGET_OS),SunOS) 135 CFLAGS += -DNV_SUNOS 136endif 137 138ifndef TARGET_ARCH 139 TARGET_ARCH := $(shell uname -m) 140 TARGET_ARCH := $(subst i386,x86,$(TARGET_ARCH)) 141 TARGET_ARCH := $(subst i486,x86,$(TARGET_ARCH)) 142 TARGET_ARCH := $(subst i586,x86,$(TARGET_ARCH)) 143 TARGET_ARCH := $(subst i686,x86,$(TARGET_ARCH)) 144endif 145 146ifeq ($(TARGET_ARCH),x86) 147 CFLAGS += -DNV_X86 -DNV_ARCH_BITS=32 148endif 149 150ifeq ($(TARGET_ARCH),x86_64) 151 CFLAGS += -DNV_X86_64 -DNV_ARCH_BITS=64 152endif 153 154ifeq ($(TARGET_ARCH),armv7l) 155 CFLAGS += -DNV_ARMV7 -DNV_ARCH_BITS=32 156endif 157 158ifeq ($(TARGET_ARCH),aarch64) 159 CFLAGS += -DNV_AARCH64 -DNV_ARCH_BITS=64 160endif 161 162ifeq ($(TARGET_ARCH),ppc64le) 163 CFLAGS += -DNV_PPC64LE -DNV_ARCH_BITS=64 164endif 165 166ifeq ($(TARGET_OS),Linux) 167 LIBDL_LIBS = -ldl 168else 169 LIBDL_LIBS = 170endif 171 172# This variable controls which floating-point ABI is targeted. For ARM, it 173# defaults to "gnueabi" for softfp. Another option is "gnueabihf" for 174# hard(fp). This is necessary to pick up the correct rtld_test binary. 175# All other architectures default to empty. 176ifeq ($(TARGET_ARCH),armv7l) 177 TARGET_ARCH_ABI ?= gnueabi 178endif 179TARGET_ARCH_ABI ?= 180 181ifeq ($(TARGET_ARCH_ABI),gnueabi) 182 CFLAGS += -DNV_GNUEABI 183endif 184 185ifeq ($(TARGET_ARCH_ABI),gnueabihf) 186 CFLAGS += -DNV_GNUEABIHF 187endif 188 189OUTPUTDIR ?= _out/$(TARGET_OS)_$(TARGET_ARCH) 190OUTPUTDIR_ABSOLUTE ?= $(CURDIR)/$(OUTPUTDIR) 191 192NV_SEPARATE_DEBUG_INFO ?= 193NV_KEEP_UNSTRIPPED_BINARIES ?= 194 195NV_QUIET_COMMAND_REMOVED_TARGET_PREFIX ?= 196 197NV_GENERATED_HEADERS ?= 198 199PCIACCESS_CFLAGS ?= 200PCIACCESS_LDFLAGS ?= 201 202############################################################################## 203# This makefile uses the $(eval) builtin function, which was added in 204# GNU make 3.80. Check that the current make version recognizes it. 205# Idea suggested by "The GNU Make Book" by John Graham-Cumming. 206############################################################################## 207 208_eval_available := 209$(eval _eval_available := T) 210 211ifneq ($(_eval_available),T) 212 $(error This Makefile requires a GNU Make that supports 'eval'. Please upgrade to GNU make 3.80 or later) 213endif 214 215############################################################################## 216# Test passing $(1) to $(CC). If $(CC) succeeds, then echo $(1). 217# 218# Because this uses $(shell), it is best to use this to assign simply expanded 219# variables (e.g., ":="). 220# 221# Example usage: 222# CONDITIONAL_CFLAGS := $(call TEST_CC_ARG, -ffoo) 223############################################################################## 224 225TEST_CC_ARG = \ 226 $(shell $(CC) -c -x c /dev/null -Werror $(1) -o /dev/null > /dev/null 2>&1 && \ 227 $(ECHO) $(1)) 228 229 230############################################################################## 231# Test if instruction $(1) is understood by the assembler 232# Returns "1" if the instruction is understood, else returns empty string. 233# 234# Example usage: 235# ENDBR_SUPPORTED := $(call AS_HAS_INSTR, endbr64) 236############################################################################## 237 238AS_HAS_INSTR = \ 239 $(shell if ($(ECHO) "$(1)" | $(CC) -c -x assembler - -o /dev/null) >/dev/null 2>&1 ;\ 240 then $(ECHO) "1"; else $(ECHO) ""; fi) 241 242 243############################################################################## 244# define variables used when installing the open source utilities from 245# the source tarball 246############################################################################## 247 248PREFIX ?= /usr/local 249 250BINDIR = $(DESTDIR)$(PREFIX)/bin 251LIBDIR = $(DESTDIR)$(PREFIX)/lib 252MANDIR = $(DESTDIR)$(PREFIX)/share/man/man1 253 254 255############################################################################## 256# default build rule, so that nothing here in utils.mk accidentally 257# gets selected as the default rule 258############################################################################## 259 260default build: all 261.PHONY: default build 262 263############################################################################## 264# get the definition of NVIDIA_VERSION from version.mk 265# 266# version.mk may be in one of two places: either in $(OUTPUTDIR) when 267# building as part of the NVIDIA driver build, or directly in the 268# source directory when building from the source tarball 269# 270# Throw an error if one of these two places did not define NVIDIA_VERSION. 271############################################################################## 272 273VERSION_MK_DIR ?= . 274VERSION_MK := $(wildcard $(OUTPUTDIR)/version.mk $(VERSION_MK_DIR)/version.mk ) 275include $(VERSION_MK) 276 277ifndef NVIDIA_VERSION 278$(error NVIDIA_VERSION undefined) 279endif 280 281############################################################################## 282# NV_GET_SOURCE_TYPE: if the source file $(1) should be compiled as C, this 283# evalutes to "CC"; if the source file $(1) should be compiled as C++, this 284# evalutes to "CXX". 285############################################################################## 286 287NV_GET_SOURCE_TYPE = $(strip \ 288 $(if $(filter %.c, $(1)),CC, \ 289 $(if $(filter %.cpp, $(1)),CXX, \ 290 $(error Unrecognized source $(1))))) 291 292 293############################################################################## 294# Several of the functions below take an argument that indicates if 295# the expression is for the target platform (the system the built 296# program is going to run on) or the host platform (the system 297# performing the build). The argument is either "HOST" or "TARGET" 298# and needs to be converted: 299# 300# "HOST" -> "HOST_" 301# "TARGET" -> "" 302############################################################################## 303 304host_target = $(patsubst HOST,HOST_,$(patsubst TARGET,,$(1))) 305 306 307############################################################################## 308# To generate the dependency files: 309# 310# - Use the compiler's "-MMD" option to generate output of the form 311# "foo.o : foo.c foo.h bar.h". 312# 313# - Also, "-MMD" will cause the compiler to name the target as if it were in the 314# current directory ("foo.o: "); use -MT to rename the target in the output 315# directory ("_out/Linux_x86/foo.o: ") so that the target actually applies to 316# the object files produced in the build. 317# 318# - Use -MP to generate a phony target for each of those prerequisites (except 319# the source file being compiled). E.g., 320# "foo.o : foo.c foo.h bar.h 321# foo.h: 322# bar.h:" 323# so that the makefile can handle incremental builds after a prerequisite has 324# been deleted from source control. 325# 326# - Use sed to remove the source file from the list of prerequisties in the 327# above, so that the makefile can handle increment builds after the source has 328# moved from one directory to another. The DEFINE_OBJECT_RULE macro spells 329# out the obj: src dependency, so we don't require it here. 330############################################################################## 331 332ifeq ($(NV_AUTO_DEPEND),1) 333 AUTO_DEP_SUFFIX = -MMD -MF $$(@:.o=.d.to_be_processed) -MP -MT $$@ && \ 334 $$(SED) -e "1,3s| $$< | |" < $$(@:.o=.d.to_be_processed) > $$(@:.o=.d) 335else 336 AUTO_DEP_SUFFIX = 337endif 338 339 340############################################################################## 341# echo minimal compile information in the non-NV_VERBOSE case 342# 343# NV_MODULE_LOGGING_NAME can be set to prepend quiet build output with a 344# label of which build component is being built 345############################################################################## 346 347NV_MODULE_LOGGING_NAME ?= 348 349ifeq ($(NV_VERBOSE),0) 350 at_if_quiet := @ 351 quiet_cmd_no_at = $(PRINTF) \ 352 " $(if $(NV_MODULE_LOGGING_NAME),[ %-17.17s ],%s) $(quiet_$(1))\n" \ 353 "$(NV_MODULE_LOGGING_NAME)" && $($(1)) 354 quiet_cmd = @$(quiet_cmd_no_at) 355else 356 at_if_quiet := 357 quiet_cmd_no_at = $($(1)) 358 quiet_cmd = $($(1)) 359endif 360 361# define LINK and HOST_LINK to be the same as CC; this is so that, 362# even though we use CC to link programs, we can have a different 363# quiet rule that uses '$@' as it's arg, rather than '$<' 364LINK = $(CC) 365HOST_LINK = $(HOST_CC) 366 367# strip NV_QUIET_COMMAND_REMOVED_TARGET_PREFIX from the target string 368define_quiet_cmd = $(1) $(patsubst $(NV_QUIET_COMMAND_REMOVED_TARGET_PREFIX)/%,%,$(2)) 369 370# define the quiet commands: 371quiet_CC = $(call define_quiet_cmd,CC ,$<) 372quiet_CXX = $(call define_quiet_cmd,CXX ,$<) 373quiet_HOST_CC = $(call define_quiet_cmd,HOST_CC ,$<) 374quiet_HOST_CXX = $(call define_quiet_cmd,HOST_CXX ,$<) 375quiet_LINK = $(call define_quiet_cmd,LINK ,$@) 376quiet_HOST_LINK = $(call define_quiet_cmd,HOST_LINK ,$@) 377quiet_M4 = $(call define_quiet_cmd,M4 ,$<) 378quiet_STRIP_CMD = $(call define_quiet_cmd,STRIP ,$@) 379quiet_HARDLINK = $(call define_quiet_cmd,HARDLINK ,$@) 380quiet_LD = $(call define_quiet_cmd,LD ,$@) 381quiet_OBJCOPY = $(call define_quiet_cmd,OBJCOPY ,$@) 382quiet_AR = $(call define_quiet_cmd,AR ,$@) 383quiet_XZ = $(call define_quiet_cmd,XZ ,$@) 384 385############################################################################## 386# Tell gmake to delete the target of a rule if it has changed and its 387# commands exit with a nonzero exit status. 388############################################################################## 389.DELETE_ON_ERROR: 390 391 392############################################################################## 393# function to generate a list of object files from their corresponding 394# source files using the specified path. The _WITH_DIR variant takes an 395# output path as the second argument while the BUILD_OBJECT_LIST defaults 396# to using the value of OUTPUTDIR as the output path. example usage: 397# 398# OBJS = $(call BUILD_OBJECT_LIST_WITH_DIR,$(SRC),$(DIR)) 399############################################################################## 400 401BUILD_OBJECT_LIST_WITH_DIR = \ 402 $(addprefix $(2)/,$(notdir $(addsuffix .o,$(basename $(1))))) 403 404BUILD_OBJECT_LIST = \ 405 $(call BUILD_OBJECT_LIST_WITH_DIR,$(1),$(OUTPUTDIR)) 406 407$(call BUILD_OBJECT_LIST,nvpci-utils.c): CFLAGS += $(PCIACCESS_CFLAGS) 408 409############################################################################## 410# function to generate a list of dependency files from their 411# corresponding source files using the specified path. The _WITH_DIR 412# variant takes an output path as the second argument while the 413# BUILD_DEPENDENCY_LIST default to using the value of OUTPUTDIR as the 414# output path. example usage: 415# 416# DEPS = $(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(SRC),$(DIR)) 417############################################################################## 418 419BUILD_DEPENDENCY_LIST_WITH_DIR = \ 420 $(addprefix $(2)/,$(notdir $(addsuffix .d,$(basename $(1))))) 421 422BUILD_DEPENDENCY_LIST = \ 423 $(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(1),$(OUTPUTDIR)) 424 425 426############################################################################## 427# functions to define a rule to build an object file; the first 428# argument for all functions is whether the rule is for the target or 429# host platform ("HOST" or "TARGET"), the second argument for all 430# functions is the source file to compile. 431# 432# An order-only dependency is added on any generated header files listed in 433# $(NV_GENERATED_HEADERS), to ensure they're present before invoking the 434# compiler. For incremental builds where the object file already exists, a 435# real (not order-only) dependency will be created by automatic dependency 436# tracking if needed. 437# 438# The _WITH_OBJECT_NAME and _WITH_DIR function name suffixes describe 439# the third and possibly fourth arguments based on order. The 440# _WITH_OBJECT_NAME argument is the object filename to produce while 441# the _WITH_DIR argument is the destination path for the object file. 442# 443# Example usage: 444# 445# $(eval $(call DEFINE_OBJECT_RULE,TARGET,foo.c)) 446# 447# Note this also attempts to include the dependency file for this 448# source file. 449# 450# The DEFINE_OBJECT_RULE is functionally equivalent to 451# DEFINE_OBJECT_RULE_WITH_OBJECT_NAME, but infers the object file name 452# from the source file name (this is normally what you want). 453# 454# Arguments: 455# $(1) : HOST or TARGET 456# $(2) : source file 457# $(3) : object file 458# $(4) : directory 459############################################################################## 460 461define DEFINE_OBJECT_RULE_WITH_OBJECT_NAME_WITH_DIR 462 $(3): NV_SOURCE_TYPE = $$(call NV_GET_SOURCE_TYPE,$(2)) 463 464 # obj: {HOST_,}CFLAGS += $$({HOST_,}{CC,CXX}_ONLY_CFLAGS) 465 $(3): $$(call host_target,$(1))CFLAGS += \ 466 $$($(call host_target,$(1))$$(NV_SOURCE_TYPE)_ONLY_CFLAGS) 467 468 $(3): $(2) | $$(NV_GENERATED_HEADERS) 469 @$(MKDIR) $(4) 470 $$(call quiet_cmd,$(call host_target,$(1))$$(NV_SOURCE_TYPE)) \ 471 $$($(call host_target,$(1))CFLAGS) -c $$< -o $$@ \ 472 $(AUTO_DEP_SUFFIX) 473 474 -include $$(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(3),$(4)) 475 476 # declare empty rule for generating dependency file; we generate the 477 # dependency files implicitly when compiling the source file (see 478 # AUTO_DEP_SUFFIX above), so we don't want gmake to spend time searching 479 # for an explicit rule to generate the dependency file 480 $$(call BUILD_DEPENDENCY_LIST_WITH_DIR,$(3),$(4)): ; 481 482endef 483 484define DEFINE_OBJECT_RULE_WITH_OBJECT_NAME 485 $$(eval $$(call DEFINE_OBJECT_RULE_WITH_OBJECT_NAME_WITH_DIR,$(1),$(2),\ 486 $(3),$(OUTPUTDIR))) 487endef 488 489define DEFINE_OBJECT_RULE_WITH_DIR 490 $$(eval $$(call DEFINE_OBJECT_RULE_WITH_OBJECT_NAME_WITH_DIR,$(1),$(2),\ 491 $$(call BUILD_OBJECT_LIST_WITH_DIR,$(2),$(3)),$(3))) 492endef 493 494define DEFINE_OBJECT_RULE 495 $$(eval $$(call DEFINE_OBJECT_RULE_WITH_DIR,$(1),$(2),$(OUTPUTDIR))) 496endef 497 498# This is a function that will generate rules to build 499# files with separate debug information, if so requested. 500# 501# It takes one parameter: (1) Name of unstripped binary 502# 503# When used, the target for linking should be named (1).unstripped 504# 505# If separate debug information is requested, it will 506# generate a rule to build one from the unstripped binary. 507# If requested, it will also retain the unstripped binary. 508define DEBUG_INFO_RULES 509 $(1): $(1).unstripped 510 ifneq ($(or $(DO_STRIP),$(NV_SEPARATE_DEBUG_INFO)),) 511 $$(call quiet_cmd,STRIP_CMD) -o $$@ $$< 512 else 513 $$(call quiet_cmd,HARDLINK) $$^ $$@ 514 endif 515 ifeq ($(NV_SEPARATE_DEBUG_INFO),1) 516 $(1).debug: $(1).unstripped 517 $$(call quiet_cmd,STRIP_CMD) --only-keep-debug -o $$@ $$< 518 $(1): $(1).debug 519 endif 520 ifneq ($(NV_KEEP_UNSTRIPPED_BINARIES),1) 521 .INTERMEDIATE: $(1).unstripped 522 endif 523endef 524 525############################################################################## 526# Define rule for generating a source file containing identification information 527# for the build. 528# 529# $(1) string name 530# $(2) module name 531# $(3) prerequisite object files 532############################################################################## 533 534NVIDSTRING = $(OUTPUTDIR)/g_nvid_string.c 535 536ifeq ($(DEBUG),1) 537 NVIDSTRING_BUILD_TYPE_STRING = Debug Build 538else 539 NVIDSTRING_BUILD_TYPE_STRING = Release Build 540endif 541 542define GENERATE_NVIDSTRING 543 # g_nvid_string.c depends on all objects except g_nvid_string.o, and version.mk 544 $(NVIDSTRING): $$(filter-out $$(call BUILD_OBJECT_LIST,$$(NVIDSTRING)), $(3)) $$(VERSION_MK) 545 $(at_if_quiet)$$(MKDIR) $$(dir $$@) 546 $(at_if_quiet)$$(ECHO) "const char $(1)[] = \"nvidia id: NVIDIA $$(strip $(2)) for $$(TARGET_ARCH) $$(NVIDIA_VERSION) $$(NVIDSTRING_BUILD_TYPE_STRING) (`$$(WHOAMI)`@$$(HOSTNAME)) `$$(DATE)`\";" > $$@ 547 $(at_if_quiet)$$(ECHO) "const char *const p$$(strip $(1)) = $(1) + 11;" >> $$@; 548endef 549 550 551############################################################################## 552# Define rules that can be used for embedding a file into an ELF object that 553# contains the raw contents of that file and symbols pointing to the embedded 554# data. 555# 556# Note that objcopy will name the symbols in the resulting object file based on 557# the filename specified in $(1). For example, 558# 559# $(eval $(call $(READ_ONLY_OBJECT_FROM_FILE_RULE),a/b/c)) 560# 561# will create an object named $(OUTPUTDIR)/c.o with the symbols _binary_c_start, 562# _binary_c_end, and _binary_c_size. 563# 564# Arguments: 565# $(1): Path to the file to convert 566############################################################################## 567 568LD_TARGET_EMULATION_FLAG = 569LD_TARGET_EMULATION_FLAG_Linux_x86 = elf_i386 570LD_TARGET_EMULATION_FLAG_Linux_x86_64 = elf_x86_64 571LD_TARGET_EMULATION_FLAG_Linux_aarch64 = aarch64elf 572LD_TARGET_EMULATION_FLAG_Linux_ppc64le = elf64lppc 573LD_TARGET_EMULATION_FLAG_SunOS_x86 = elf_i386_sol2 574LD_TARGET_EMULATION_FLAG_SunOS_x86_64 = elf_x86_64_sol2 575LD_TARGET_EMULATION_FLAG_FreeBSD_x86 = elf_i386_fbsd 576LD_TARGET_EMULATION_FLAG_FreeBSD_x86_64 = elf_x86_64_fbsd 577 578ifdef LD_TARGET_EMULATION_FLAG_$(TARGET_OS)_$(TARGET_ARCH) 579 LD_TARGET_EMULATION_FLAG = -m $(LD_TARGET_EMULATION_FLAG_$(TARGET_OS)_$(TARGET_ARCH)) 580endif 581 582define READ_ONLY_OBJECT_FROM_FILE_RULE 583 $$(OUTPUTDIR)/$$(notdir $(1)).o: $(1) 584 $(at_if_quiet)$$(MKDIR) $$(OUTPUTDIR) 585 $(at_if_quiet)cd $$(dir $(1)); \ 586 $$(call quiet_cmd_no_at,LD) -r -z noexecstack --format=binary \ 587 $$(LD_TARGET_EMULATION_FLAG) \ 588 $$(notdir $(1)) -o $$(OUTPUTDIR_ABSOLUTE)/$$(notdir $$@) 589 $$(call quiet_cmd,OBJCOPY) \ 590 --rename-section .data=.rodata,contents,alloc,load,data,readonly \ 591 $$@ 592endef 593