diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 128 |
1 files changed, 65 insertions, 63 deletions
@@ -3,7 +3,7 @@ VERSION = 2025 PATCHLEVEL = 07 SUBLEVEL = -EXTRAVERSION = -rc4 +EXTRAVERSION = -rc5 NAME = # *DOCUMENTATION* @@ -12,10 +12,6 @@ NAME = # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. -# Do not use make's built-in rules and variables -# (this increases performance and avoids hard-to-debug behaviour) -MAKEFLAGS += -rR - # Determine target architecture for the sandbox include include/host_arch.h ifeq ("", "$(CROSS_COMPILE)") @@ -39,15 +35,6 @@ else ifeq ("riscv64", $(MK_ARCH)) endif undefine MK_ARCH -# Avoid funny character set dependencies -unexport LC_ALL -LC_COLLATE=C -LC_NUMERIC=C -export LC_COLLATE LC_NUMERIC - -# Avoid interference with shell env settings -unexport GREP_OPTIONS - # We are using a recursive build, so we need to do a little thinking # to get the ordering right. # @@ -64,6 +51,21 @@ unexport GREP_OPTIONS # descending is started. They are now explicitly listed as the # prepare rule. +ifneq ($(sub_make_done),1) + +# Do not use make's built-in rules and variables +# (this increases performance and avoids hard-to-debug behaviour) +MAKEFLAGS += -rR + +# Avoid funny character set dependencies +unexport LC_ALL +LC_COLLATE=C +LC_NUMERIC=C +export LC_COLLATE LC_NUMERIC + +# Avoid interference with shell env settings +unexport GREP_OPTIONS + # Beautify output # --------------------------------------------------------------------------- # @@ -137,7 +139,6 @@ export quiet Q KBUILD_VERBOSE # KBUILD_SRC is set on invocation of make in OBJ directory # KBUILD_SRC is not intended to be used by the regular user (for now) -ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides # Do we want to locate output files in a separate directory? @@ -168,22 +169,26 @@ $(if $(KBUILD_OUTPUT),, \ # 'sub-make' below. MAKEFLAGS += --include-dir=$(CURDIR) +else + +# Do not print "Entering directory ..." at all for in-tree build. +MAKEFLAGS += --no-print-directory + +endif # ifneq ($(KBUILD_OUTPUT),) + +export sub_make_done := 1 PHONY += $(MAKECMDGOALS) sub-make $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make @: sub-make: FORCE - $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ + $(Q)$(MAKE) \ + $(if $(KBUILD_OUTPUT),-C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR)) \ -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) -# Leave processing to above invocation of make -skip-makefile := 1 -endif # ifneq ($(KBUILD_OUTPUT),) -endif # ifeq ($(KBUILD_SRC),) - +else # sub_make_done # We process the rest of the Makefile if this is the final invocation of make -ifeq ($(skip-makefile),) # Do not print "Entering directory ...", # but we want to display it when entering to the output directory @@ -225,6 +230,9 @@ ifeq ($(KBUILD_EXTMOD),) _all: all else _all: modules +PHONY += prepare +prepare: + $(cmd_crmodverdir) endif ifeq ($(KBUILD_SRC),) @@ -429,18 +437,20 @@ CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__ -KBUILD_CFLAGS := -Wall -Wstrict-prototypes \ +KBUILD_CFLAGS := -Wall -Werror=strict-prototypes -Wno-trigraphs \ -Wno-format-security \ - -fno-builtin -ffreestanding $(CSTD_FLAG) + -fno-builtin -ffreestanding $(CSTD_FLAG) \ + -fno-PIE \ + -Werror=implicit-function-declaration -Werror=implicit-int KBUILD_CFLAGS += -fshort-wchar -fno-strict-aliasing -KBUILD_AFLAGS := -D__ASSEMBLY__ +KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE KBUILD_LDFLAGS := ifeq ($(cc-name),clang) ifneq ($(CROSS_COMPILE),) CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) LDPPFLAGS += $(CLANG_TARGET) -GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD))) +GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR) GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) endif @@ -453,10 +463,6 @@ KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) endif -# Don't generate position independent code -KBUILD_CFLAGS += $(call cc-option,-fno-PIE) -KBUILD_AFLAGS += $(call cc-option,-fno-PIE) - # Read UBOOTRELEASE from include/config/uboot.release (if it exists) UBOOTRELEASE = $(shell cat include/config/uboot.release 2> /dev/null) UBOOTVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) @@ -511,10 +517,14 @@ PHONY += outputmakefile # outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. +# At the same time when output Makefile generated, generate .gitignore to +# ignore whole output directory outputmakefile: ifneq ($(KBUILD_SRC),) $(Q)ln -fsn $(srctree) source $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) + $(Q)test -e .gitignore || \ + { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore endif # To make sure we do not include .config for any of the *config targets @@ -795,7 +805,6 @@ ifdef CONFIG_CC_IS_CLANG KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) KBUILD_CFLAGS += $(call cc-disable-warning, gnu) -KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) # Quiet clang warning: comparison of unsigned expression < 0 is always false KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the @@ -1414,6 +1423,7 @@ cmd_binman = $(srctree)/tools/binman/binman $(if $(BINMAN_DEBUG),-D) \ -I . -I $(srctree) -I $(srctree)/board/$(BOARDDIR) \ $(foreach f,$(of_list_dirs),-I $(f)) -a of-list=$(of_list) \ $(foreach f,$(BINMAN_INDIRS),-I $(f)) \ + -a atf-bl1-path=${BL1} \ -a atf-bl31-path=${BL31} \ -a tee-os-path=${TEE} \ -a ti-dm-path=${TI_DM} \ @@ -1733,6 +1743,7 @@ u-boot.elf: u-boot.bin u-boot-elf.lds u-boot-elf.lds: arch/u-boot-elf.lds prepare FORCE $(call if_changed_dep,cpp_lds) +PHONY += prepare0 # MediaTek's ARM-based u-boot needs a header to contains its load address # which is parsed by the BootROM. # If the SPL build is enabled, the header will be added to the spl binary, @@ -1915,7 +1926,7 @@ $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; # Error messages still appears in the original language PHONY += $(u-boot-dirs) -$(u-boot-dirs): prepare scripts +$(u-boot-dirs): prepare $(Q)$(MAKE) $(build)=$@ tools: prepare @@ -1944,7 +1955,7 @@ include/config/uboot.release: include/config/auto.conf FORCE # version.h and scripts_basic is processed / created. # Listed in dependency order -PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 +PHONY += prepare archprepare prepare1 prepare3 # prepare3 is used to check if we are building in a separate output directory, # and if so do: @@ -1959,23 +1970,20 @@ ifneq ($(KBUILD_SRC),) fi; endif -# prepare2 creates a makefile if using a separate output directory -prepare2: prepare3 outputmakefile cfg - -prepare1: prepare2 $(version_h) $(timestamp_h) $(dt_h) $(env_h) \ +prepare1: prepare3 outputmakefile cfg $(version_h) $(timestamp_h) $(dt_h) $(env_h) \ include/config/auto.conf ifeq ($(wildcard $(LDSCRIPT)),) @echo >&2 " Could not find linker script." @/bin/false endif -ifeq ($(CONFIG_USE_DEFAULT_ENV_FILE),y) +ifeq ($(CONFIG_ENV_USE_DEFAULT_ENV_TEXT_FILE),y) prepare1: $(defaultenv_h) envtools: $(defaultenv_h) endif -archprepare: prepare1 scripts_basic +archprepare: prepare1 scripts prepare0: archprepare FORCE $(Q)$(MAKE) $(build)=. @@ -2049,7 +2057,7 @@ $(timestamp_h): $(srctree)/Makefile FORCE $(dt_h): $(srctree)/Makefile FORCE $(call filechk,dt.h) -$(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE +$(defaultenv_h): $(CONFIG_ENV_DEFAULT_ENV_TEXT_FILE:"%"=%) FORCE $(call filechk,defaultenv.h) # --------------------------------------------------------------------------- @@ -2281,7 +2289,7 @@ mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) mrproper-dirs := $(addprefix _mrproper_,scripts) -PHONY += $(mrproper-dirs) mrproper archmrproper +PHONY += $(mrproper-dirs) mrproper $(mrproper-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) @@ -2482,32 +2490,29 @@ else target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) endif -%.s: %.c prepare scripts FORCE +%.s: %.c prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -%.i: %.c prepare scripts FORCE +%.i: %.c prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -%.o: %.c prepare scripts FORCE +%.o: %.c prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -%.lst: %.c prepare scripts FORCE +%.lst: %.c prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -%.s: %.S prepare scripts FORCE +%.s: %.S prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -%.o: %.S prepare scripts FORCE +%.o: %.S prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) -%.symtypes: %.c prepare scripts FORCE +%.symtypes: %.c prepare FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) # Modules -/: prepare scripts FORCE - $(cmd_crmodverdir) +/: prepare FORCE $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) -%/: prepare scripts FORCE - $(cmd_crmodverdir) +%/: prepare FORCE $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) -%.ko: prepare scripts FORCE - $(cmd_crmodverdir) +%.ko: prepare FORCE $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) $(@:.ko=.o) $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost @@ -2539,18 +2544,15 @@ quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) cmd_rmfiles = rm -f $(rm-files) -# read all saved command lines - -cmd_files := $(wildcard .*.cmd) - -ifneq ($(cmd_files),) - $(cmd_files): ; # Do not try to update included dependency files - include $(cmd_files) -endif +# read saved command lines for existing targets +existing-targets := $(wildcard $(sort $(targets))) +cmd_files := $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) +$(cmd_files): ; # Do not try to update included dependency files +-include $(cmd_files) endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) -endif # skip-makefile +endif # sub_make_done PHONY += FORCE FORCE: |