| # |
| # (C) Copyright 2000-2013 |
| # Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| # |
| # SPDX-License-Identifier: GPL-2.0+ |
| # |
| ######################################################################### |
| |
| # Set shell to bash if possible, otherwise fall back to sh |
| SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
| else if [ -x /bin/bash ]; then echo /bin/bash; \ |
| else echo sh; fi; fi) |
| |
| export SHELL |
| |
| ifeq ($(CURDIR),$(SRCTREE)) |
| dir := |
| else |
| dir := $(subst $(SRCTREE)/,,$(CURDIR)) |
| endif |
| |
| ifneq ($(OBJTREE),$(SRCTREE)) |
| # Create object files for SPL in a separate directory |
| ifeq ($(CONFIG_SPL_BUILD),y) |
| ifeq ($(CONFIG_TPL_BUILD),y) |
| obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) |
| else |
| obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) |
| endif |
| else |
| obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) |
| endif |
| src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) |
| |
| $(shell mkdir -p $(obj)) |
| else |
| # Create object files for SPL in a separate directory |
| ifeq ($(CONFIG_SPL_BUILD),y) |
| ifeq ($(CONFIG_TPL_BUILD),y) |
| obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) |
| else |
| obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) |
| |
| endif |
| $(shell mkdir -p $(obj)) |
| else |
| obj := |
| endif |
| src := |
| endif |
| |
| # clean the slate ... |
| PLATFORM_RELFLAGS = |
| PLATFORM_CPPFLAGS = |
| PLATFORM_LDFLAGS = |
| |
| ######################################################################### |
| |
| HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ |
| $(HOSTCPPFLAGS) |
| HOSTSTRIP = strip |
| |
| # |
| # Mac OS X / Darwin's C preprocessor is Apple specific. It |
| # generates numerous errors and warnings. We want to bypass it |
| # and use GNU C's cpp. To do this we pass the -traditional-cpp |
| # option to the compiler. Note that the -traditional-cpp flag |
| # DOES NOT have the same semantics as GNU C's flag, all it does |
| # is invoke the GNU preprocessor in stock ANSI/ISO C fashion. |
| # |
| # Apple's linker is similar, thanks to the new 2 stage linking |
| # multiple symbol definitions are treated as errors, hence the |
| # -multiply_defined suppress option to turn off this error. |
| # |
| |
| ifeq ($(HOSTOS),darwin) |
| # get major and minor product version (e.g. '10' and '6' for Snow Leopard) |
| DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.') |
| DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.') |
| |
| os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ |
| $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) |
| |
| # Snow Leopards build environment has no longer restrictions as described above |
| HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") |
| HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") |
| HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") |
| else |
| HOSTCC = gcc |
| endif |
| |
| ifeq ($(HOSTOS),cygwin) |
| HOSTCFLAGS += -ansi |
| endif |
| |
| # We build some files with extra pedantic flags to try to minimize things |
| # that won't build on some weird host compiler -- though there are lots of |
| # exceptions for files that aren't complaint. |
| |
| HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) |
| HOSTCFLAGS += -pedantic |
| |
| ######################################################################### |
| # |
| # Option checker, gcc version (courtesy linux kernel) to ensure |
| # only supported compiler options are used |
| # |
| CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk |
| CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o |
| |
| -include $(CC_OPTIONS_CACHE_FILE) |
| |
| cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \ |
| if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \ |
| > /dev/null 2>&1; then \ |
| echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \ |
| echo "$(1)"; fi) |
| |
| ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y) |
| cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2)) |
| else |
| cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\ |
| $(if $(call cc-option-sys,$1),$1,$2))) |
| endif |
| |
| # cc-version |
| # Usage gcc-ver := $(call cc-version) |
| cc-version = $(shell $(SHELL) $(SRCTREE)/scripts/gcc-version.sh $(CC)) |
| binutils-version = $(shell $(SHELL) $(SRCTREE)/scripts/binutils-version.sh $(AS)) |
| dtc-version = $(shell $(SHELL) $(SRCTREE)/scripts/dtc-version.sh $(DTC)) |
| |
| # |
| # Include the make variables (CC, etc...) |
| # |
| AS = $(CROSS_COMPILE)as |
| |
| # Always use GNU ld |
| LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \ |
| then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;) |
| |
| CC = $(CROSS_COMPILE)gcc |
| CPP = $(CC) -E |
| AR = $(CROSS_COMPILE)ar |
| NM = $(CROSS_COMPILE)nm |
| LDR = $(CROSS_COMPILE)ldr |
| STRIP = $(CROSS_COMPILE)strip |
| OBJCOPY = $(CROSS_COMPILE)objcopy |
| OBJDUMP = $(CROSS_COMPILE)objdump |
| RANLIB = $(CROSS_COMPILE)RANLIB |
| DTC = dtc |
| CHECK = sparse |
| |
| ######################################################################### |
| |
| # Load generated board configuration |
| ifeq ($(CONFIG_TPL_BUILD),y) |
| # Include TPL autoconf |
| sinclude $(OBJTREE)/include/tpl-autoconf.mk |
| else |
| ifeq ($(CONFIG_SPL_BUILD),y) |
| # Include SPL autoconf |
| sinclude $(OBJTREE)/include/spl-autoconf.mk |
| else |
| # Include normal autoconf |
| sinclude $(OBJTREE)/include/autoconf.mk |
| endif |
| endif |
| sinclude $(OBJTREE)/include/config.mk |
| |
| # Some architecture config.mk files need to know what CPUDIR is set to, |
| # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. |
| # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains |
| # CPU-specific code. |
| CPUDIR=arch/$(ARCH)/cpu/$(CPU) |
| ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR))) |
| CPUDIR=arch/$(ARCH)/cpu |
| endif |
| |
| sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules |
| sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules |
| |
| ifdef SOC |
| sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules |
| endif |
| ifdef VENDOR |
| BOARDDIR = $(VENDOR)/$(BOARD) |
| else |
| BOARDDIR = $(BOARD) |
| endif |
| ifdef BOARD |
| sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules |
| endif |
| |
| ######################################################################### |
| |
| # We don't actually use $(ARFLAGS) anywhere anymore, so catch people |
| # who are porting old code to latest mainline but not updating $(AR). |
| ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR) |
| RELFLAGS= $(PLATFORM_RELFLAGS) |
| DBGFLAGS= -g # -DDEBUG |
| OPTFLAGS= -Os #-fomit-frame-pointer |
| |
| OBJCFLAGS += --gap-fill=0xff |
| |
| gccincdir := $(shell $(CC) -print-file-name=include) |
| |
| CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ |
| -D__KERNEL__ |
| |
| # Enable garbage collection of un-used sections for SPL |
| ifeq ($(CONFIG_SPL_BUILD),y) |
| CPPFLAGS += -ffunction-sections -fdata-sections |
| LDFLAGS_FINAL += --gc-sections |
| endif |
| |
| # TODO(sjg@chromium.org): Is this correct on Mac OS? |
| |
| # MXSImage needs LibSSL |
| ifneq ($(CONFIG_MX23)$(CONFIG_MX28),) |
| HOSTLIBS += -lssl -lcrypto |
| # Add CONFIG_MXS into host CFLAGS, so we can check whether or not register |
| # the mxsimage support within tools/mxsimage.c . |
| HOSTCFLAGS += -DCONFIG_MXS |
| endif |
| |
| ifdef CONFIG_FIT_SIGNATURE |
| HOSTLIBS += -lssl -lcrypto |
| |
| # This affects include/image.h, but including the board config file |
| # is tricky, so manually define this options here. |
| HOSTCFLAGS += -DCONFIG_FIT_SIGNATURE |
| endif |
| |
| ifneq ($(CONFIG_SYS_TEXT_BASE),) |
| CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) |
| endif |
| |
| ifeq ($(CONFIG_SPL_BUILD),y) |
| CPPFLAGS += -DCONFIG_SPL_BUILD |
| ifeq ($(CONFIG_TPL_BUILD),y) |
| CPPFLAGS += -DCONFIG_TPL_BUILD |
| endif |
| endif |
| |
| # Does this architecture support generic board init? |
| ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) |
| ifneq ($(CONFIG_SYS_GENERIC_BOARD),) |
| CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \ |
| Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file) |
| endif |
| endif |
| |
| # Sandbox needs the base flags and includes, so keep them around |
| BASE_CPPFLAGS := $(CPPFLAGS) |
| |
| ifneq ($(OBJTREE),$(SRCTREE)) |
| BASE_INCLUDE_DIRS := $(OBJTREE)/include |
| endif |
| |
| BASE_INCLUDE_DIRS += $(TOPDIR)/include $(SRCTREE)/arch/$(ARCH)/include |
| |
| CPPFLAGS += $(patsubst %, -I%, $(BASE_INCLUDE_DIRS)) |
| CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ |
| -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) |
| |
| CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes |
| |
| ifdef BUILD_TAG |
| CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' |
| endif |
| |
| CFLAGS_SSP := $(call cc-option,-fno-stack-protector) |
| CFLAGS += $(CFLAGS_SSP) |
| # Some toolchains enable security related warning flags by default, |
| # but they don't make much sense in the u-boot world, so disable them. |
| CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \ |
| $(call cc-option,-Wno-format-security) |
| CFLAGS += $(CFLAGS_WARN) |
| |
| # Report stack usage if supported |
| CFLAGS_STACK := $(call cc-option,-fstack-usage) |
| CFLAGS += $(CFLAGS_STACK) |
| |
| BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) |
| |
| ifeq ($(findstring examples/,$(BCURDIR)),) |
| ifeq ($(CONFIG_SPL_BUILD),) |
| ifdef FTRACE |
| CFLAGS += -finstrument-functions -DFTRACE |
| endif |
| endif |
| endif |
| |
| # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> |
| # option to the assembler. |
| AFLAGS_DEBUG := |
| |
| # turn jbsr into jsr for m68k |
| ifeq ($(ARCH),m68k) |
| ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) |
| AFLAGS_DEBUG := -Wa,-gstabs,-S |
| endif |
| endif |
| |
| AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) |
| |
| LDFLAGS += $(PLATFORM_LDFLAGS) |
| LDFLAGS_FINAL += -Bstatic |
| |
| LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL) |
| ifneq ($(CONFIG_SYS_TEXT_BASE),) |
| LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) |
| endif |
| |
| LDFLAGS_$(SPL_BIN) += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) |
| ifneq ($(CONFIG_SPL_TEXT_BASE),) |
| LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) |
| endif |
| |
| # Linus' kernel sanity checking tool |
| CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
| -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) |
| |
| # Location of a usable BFD library, where we define "usable" as |
| # "built for ${HOST}, supports ${TARGET}". Sensible values are |
| # - When cross-compiling: the root of the cross-environment |
| # - Linux/ppc (native): /usr |
| # - NetBSD/ppc (native): you lose ... (must extract these from the |
| # binutils build directory, plus the native and U-Boot include |
| # files don't like each other) |
| # |
| # So far, this is used only by tools/gdb/Makefile. |
| |
| ifeq ($(HOSTOS),darwin) |
| BFD_ROOT_DIR = /usr/local/tools |
| else |
| ifeq ($(HOSTARCH),$(ARCH)) |
| # native |
| BFD_ROOT_DIR = /usr |
| else |
| #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 |
| #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 |
| BFD_ROOT_DIR = /opt/powerpc |
| endif |
| endif |
| |
| ######################################################################### |
| |
| export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ |
| AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE |
| export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS |
| |
| ######################################################################### |
| |
| # Allow boards to use custom optimize flags on a per dir/file basis |
| ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) |
| ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) |
| EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR)) |
| ALL_CFLAGS += $(EXTRA_CPPFLAGS) |
| |
| # The _DEP version uses the $< file target (for dependency generation) |
| # See rules.mk |
| EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \ |
| $(CPPFLAGS_$(BCURDIR)) |
| $(obj)%.s: %.S |
| $(CPP) $(ALL_AFLAGS) -o $@ $< |
| $(obj)%.o: %.S |
| $(CC) $(ALL_AFLAGS) -o $@ $< -c |
| $(obj)%.o: %.c |
| ifneq ($(CHECKSRC),0) |
| $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $< |
| endif |
| $(CC) $(ALL_CFLAGS) -o $@ $< -c |
| $(obj)%.i: %.c |
| $(CPP) $(ALL_CFLAGS) -o $@ $< -c |
| $(obj)%.s: %.c |
| $(CC) $(ALL_CFLAGS) -o $@ $< -c -S |
| |
| ######################################################################### |
| |
| # If the list of objects to link is empty, just create an empty built-in.o |
| cmd_link_o_target = $(if $(strip $1),\ |
| $(LD) $(LDFLAGS) -r -o $@ $1,\ |
| rm -f $@; $(AR) rcs $@ ) |
| |
| ######################################################################### |
