diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 102 |
1 files changed, 54 insertions, 48 deletions
@@ -163,10 +163,6 @@ export srctree objtree VPATH # Alternatively CROSS_COMPILE can be set in the environment. # Default value for CROSS_COMPILE is not to prefix executables -ifeq ($(ARCH),arm64) -ARCH = arm -endif - ARCH ?= sandbox CROSS_COMPILE ?= @@ -174,8 +170,15 @@ CROSS_COMPILE ?= UTS_MACHINE := $(ARCH) SRCARCH := $(ARCH) +ifeq ($(ARCH),arm64) + SRCARCH := arm +endif + KCONFIG_CONFIG ?= .config +# Default file for 'make defconfig'. This may be overridden by arch-Makefile. +export KBUILD_DEFCONFIG := defconfig + # SHELL used by kbuild CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ else if [ -x /bin/bash ]; then echo /bin/bash; \ @@ -187,10 +190,12 @@ HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) HOSTCC = gcc HOSTCXX = g++ -HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer $(HOST_LFS_CFLAGS) -HOSTCXXFLAGS = -O2 $(HOST_LFS_CFLAGS) -HOSTLDFLAGS = $(HOST_LFS_LDFLAGS) -HOST_LOADLIBES = $(HOST_LFS_LIBS) +KBUILD_HOSTCFLAGS := -Wall -Wstrict-prototypes -O2 \ + -fomit-frame-pointer $(HOST_LFS_CFLAGS) \ + $(HOSTCFLAGS) +KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) +KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) +KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) # Decide whether to build built-in, modular, or both. # Normally, just do built-in. @@ -302,16 +307,16 @@ export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_ve # Needed to be compatible with the O= option LINUXINCLUDE := -Iinclude -I$(srctree)/dts/include \ $(if $(KBUILD_SRC), -I$(srctree)/include) \ - -I$(srctree)/arch/$(ARCH)/include \ - -I$(objtree)/arch/$(ARCH)/include \ + -I$(srctree)/arch/$(SRCARCH)/include \ + -I$(objtree)/arch/$(SRCARCH)/include \ -include $(srctree)/include/linux/kconfig.h -CPPFLAGS := -D__KERNEL__ -D__BAREBOX__ $(LINUXINCLUDE) -fno-builtin -ffreestanding +KBUILD_CPPFLAGS := -D__KERNEL__ -D__BAREBOX__ $(LINUXINCLUDE) -fno-builtin -ffreestanding -CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ +KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -Werror-implicit-function-declaration \ -fno-strict-aliasing -fno-common -Os -pipe -Wmissing-prototypes -AFLAGS := -D__ASSEMBLY__ +KBUILD_AFLAGS := -D__ASSEMBLY__ LDFLAGS_barebox := -Map barebox.map @@ -324,14 +329,15 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION -export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC +export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL PYTHON3 UTS_MACHINE export LEX YACC -export HOSTCXX HOSTCXXFLAGS HOSTLDFLAGS HOST_LOADLIBES LDFLAGS_MODULE CHECK CHECKFLAGS +export HOSTCXX CHECK CHECKFLAGS +export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE -export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS -export CFLAGS CFLAGS_KERNEL -export AFLAGS AFLAGS_KERNEL +export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS +export KBUILD_CFLAGS CFLAGS_KERNEL +export KBUILD_AFLAGS AFLAGS_KERNEL export LDFLAGS_barebox export LDFLAGS_pbl @@ -418,7 +424,7 @@ ifeq ($(config-targets),1) # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' -include $(srctree)/arch/$(ARCH)/Makefile +include $(srctree)/arch/$(SRCARCH)/Makefile export KBUILD_DEFCONFIG config: scripts_basic outputmakefile FORCE @@ -439,12 +445,16 @@ PHONY += scripts scripts: scripts_basic $(Q)$(MAKE) $(build)=$(@) +ifeq ($(dot-config),1) +include include/config/auto.conf +endif + # Objects we will link into barebox / subdirs we need to visit common-y := common/ drivers/ commands/ lib/ crypto/ net/ fs/ firmware/ -ifeq ($(dot-config),1) -include include/config/auto.conf +include $(srctree)/arch/$(SRCARCH)/Makefile +ifeq ($(dot-config),1) # Read in dependencies to all Kconfig* files, make sure to run syncconfig if # changes are detected. This should be included after arch/$(SRCARCH)/Makefile # because some architectures define CROSS_COMPILE there. @@ -465,39 +475,38 @@ $(KCONFIG_CONFIG): # # This exploits the 'multi-target pattern rule' trick. # The syncconfig should be executed only once to make all the targets. -%/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG) +# (Note: use the grouped target '&:' when we bump to GNU Make 4.3) +%/auto.conf %/auto.conf.cmd: $(KCONFIG_CONFIG) $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig endif # $(dot-config) -include $(srctree)/arch/$(ARCH)/Makefile - -CFLAGS += -ggdb3 +KBUILD_CFLAGS += -ggdb3 # Force gcc to behave correct even for buggy distributions -CFLAGS += $(call cc-option, -fno-stack-protector) +KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) # This warning generated too much noise in a regular build. # Use make W=1 to enable this warning (see scripts/Makefile.build) -CFLAGS += $(call cc-disable-warning, unused-but-set-variable) +KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) -CFLAGS += $(call cc-disable-warning, trampolines) +KBUILD_CFLAGS += $(call cc-disable-warning, trampolines) -CFLAGS += $(call cc-option, -fno-delete-null-pointer-checks,) +KBUILD_CFLAGS += $(call cc-option, -fno-delete-null-pointer-checks,) -CFLAGS += $(call cc-disable-warning, address-of-packed-member) +KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) # arch Makefile may override CC so keep this after arch Makefile is included NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) CHECKFLAGS += $(NOSTDINC_FLAGS) # warn about C99 declaration after statement -CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) +KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) # disable pointer signed / unsigned warnings in gcc 4.0 -CFLAGS += $(call cc-option,-Wno-pointer-sign,) +KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) # change __FILE__ to the relative path from the srctree -CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) +KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) include $(srctree)/scripts/Makefile.ubsan @@ -511,7 +520,7 @@ export KBUILD_IMAGE ?= barebox.bin export KBUILD_BINARY ?= barebox.bin # KBUILD_IMAGE and _BINARY may be overruled on the command line or # set in the environment. -# Also any assignments in arch/$(ARCH)/Makefile take precedence over +# Also any assignments in arch/$(SRCARCH)/Makefile take precedence over # the default value. barebox-flash-image: $(KBUILD_IMAGE) FORCE @@ -565,7 +574,7 @@ export DEFAULT_COMPRESSION_SUFFIX # --------------------------------------------------------------------------- # barebox is built from the objects selected by $(barebox-init) and # $(barebox-main). Most are built-in.o files from top-level directories -# in the kernel tree, others are specified in arch/$(ARCH)Makefile. +# in the kernel tree, others are specified in arch/$(SRCARCH)/Makefile. # Ordering when linking is important, and $(barebox-init) must be first. # # FIXME: This picture is wrong for barebox. We have no init, driver, mm @@ -592,9 +601,9 @@ export BAREBOX_PBL_OBJS := $(pbl-common-y) BAREBOX_LDS := $(lds-y) # Rule to link barebox -# May be overridden by arch/$(ARCH)/Makefile +# May be overridden by arch/$(SRCARCH)/Makefile quiet_cmd_barebox__ ?= LD $@ - cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \ + cmd_barebox__ ?= $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_barebox) -o $@ \ -T $(BAREBOX_LDS) \ --start-group $(BAREBOX_OBJS) --end-group \ $(filter-out $(BAREBOX_LDS) $(BAREBOX_OBJS) FORCE ,$^) @@ -733,7 +742,7 @@ UIMAGE_BASE ?= $(shell printf "0x%08x" $$(($(CONFIG_TEXT_BASE) - 0x200000))) # For development provide a target which makes barebox loadable by an # unmodified u-boot quiet_cmd_barebox_mkimage = MKIMAGE $@ - cmd_barebox_mkimage = $(srctree)/scripts/mkimage -A $(ARCH) -T firmware -C none \ + cmd_barebox_mkimage = $(srctree)/scripts/mkimage -A $(SRCARCH) -T firmware -C none \ -O barebox -a $(UIMAGE_BASE) -e $(UIMAGE_BASE) \ -n "barebox $(KERNELRELEASE)" -d $< $@ @@ -842,9 +851,9 @@ prepare0: archprepare FORCE prepare prepare-all: prepare0 # Leave this as default for preprocessing barebox.lds.S, which is now -# done in arch/$(ARCH)/kernel/Makefile +# done in arch/$(SRCARCH)/kernel/Makefile -export CPPFLAGS_barebox.lds += -C -U$(ARCH) +export CPPFLAGS_barebox.lds += -C -U$(SRCARCH) define symlink-config-h if [ -f $(srctree)/$(BOARD)/config.h ]; then \ @@ -1043,7 +1052,7 @@ rpm: include/config/kernel.release FORCE # Brief documentation of the typical targets used # --------------------------------------------------------------------------- -boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) +boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) boards := $(sort $(notdir $(boards))) help: @@ -1070,13 +1079,10 @@ help: @echo 'Static analysers' @echo ' checkstack - Generate a list of stack hogs' @echo ' namespacecheck - Name space analysis on compiled kernel' - @if [ -r include/asm-$(ARCH)/Kbuild ]; then \ - echo ' headers_check - Sanity check on exported headers'; \ - fi @echo '' - @echo 'Architecture specific targets ($(ARCH)):' + @echo 'Architecture specific targets ($(SRCARCH)):' @$(if $(archhelp),$(archhelp),\ - echo ' No architecture specific help defined for $(ARCH)') + echo ' No architecture specific help defined for $(SRCARCH)') @echo '' @$(if $(boards), \ $(foreach b, $(boards), \ @@ -1158,8 +1164,8 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)) cmd_rmfiles = rm -f $(rm-files) -a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ - $(NOSTDINC_FLAGS) $(CPPFLAGS) \ +a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ + $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \ $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) quiet_cmd_as_o_S = AS $@ |