config.mk - github/trini/u-boot - Gitiles

 #
 # (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
 # project.
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
 # published by the Free Software Foundation; either version 2 of
 # the License, or (at your option) any later version.
 #
 # 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, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 # MA 02111-1307 USA
 #

 #########################################################################

 ifneq ($(OBJTREE),$(SRCTREE))
 ifeq ($(CURDIR),$(SRCTREE))
 dir :=
 else
 dir := $(subst $(SRCTREE)/,,$(CURDIR))
 endif

 obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
 src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)

 $(shell mkdir -p $(obj))
 else
 obj :=
 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)
 HOSTCC		= cc
 HOSTCFLAGS	+= -traditional-cpp
 HOSTLDFLAGS	+= -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 (courtesy linux kernel) to ensure
 # only supported compiler options are used
 #
 cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
 		> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)

 #
 # Include the make variables (CC, etc...)
 #
 AS	= $(CROSS_COMPILE)as
 LD	= $(CROSS_COMPILE)ld
 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

 #########################################################################

 # Load generated board configuration
 sinclude $(OBJTREE)/include/autoconf.mk

 ifdef	ARCH
 sinclude $(TOPDIR)/lib_$(ARCH)/config.mk	# include architecture dependend rules
 endif
 ifdef	CPU
 sinclude $(TOPDIR)/cpu/$(CPU)/config.mk		# include  CPU	specific rules
 endif
 ifdef	SOC
 sinclude $(TOPDIR)/cpu/$(CPU)/$(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

 #########################################################################

 ifneq (,$(findstring s,$(MAKEFLAGS)))
 ARFLAGS = cr
 else
 ARFLAGS = crv
 endif
 RELFLAGS= $(PLATFORM_RELFLAGS)
 DBGFLAGS= -g # -DDEBUG
 OPTFLAGS= -Os #-fomit-frame-pointer
 ifndef LDSCRIPT
 #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
 ifeq ($(CONFIG_NAND_U_BOOT),y)
 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
 else
 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
 endif
 endif
 OBJCFLAGS += --gap-fill=0xff

 gccincdir := $(shell $(CC) -print-file-name=include)

 CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS)		\
 	-D__KERNEL__
 ifneq ($(TEXT_BASE),)
 CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
 endif

 ifneq ($(RESET_VECTOR_ADDRESS),)
 CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
 endif

 ifneq ($(OBJTREE),$(SRCTREE))
 CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
 endif

 CPPFLAGS += -I$(TOPDIR)/include
 CPPFLAGS += -fno-builtin -ffreestanding -nostdinc	\
 	-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)

 ifdef BUILD_TAG
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
 	-DBUILD_TAG='"$(BUILD_TAG)"'
 else
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
 endif

 CFLAGS += $(call cc-option,-fno-stack-protector)

 # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
 # this option have to be placed behind -Wall -- that's why it is here
 ifeq ($(ARCH),nios)
 ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
 CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
 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 += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS)
 ifneq ($(TEXT_BASE),)
 LDFLAGS += -Ttext $(TEXT_BASE)
 endif

 # 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	TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS

 #########################################################################

 # Allow boards to use custom optimize flags on a per dir/file basis
 BCURDIR := $(notdir $(CURDIR))
 $(obj)%.s:	%.S
 	$(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $<
 $(obj)%.o:	%.S
 	$(CC)  $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c
 $(obj)%.o:	%.c
 	$(CC)  $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
 $(obj)%.i:	%.c
 	$(CPP) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
 $(obj)%.s:	%.c
 	$(CC)  $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c -S

 #########################################################################
	#
	# (C) Copyright 2000-2006
	# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	#
	# See file CREDITS for list of people who contributed to this
	# project.
	#
	# This program is free software; you can redistribute it and/or
	# modify it under the terms of the GNU General Public License as
	# published by the Free Software Foundation; either version 2 of
	# the License, or (at your option) any later version.
	#
	# 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, write to the Free Software
	# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	# MA 02111-1307 USA
	#

	#########################################################################

	ifneq ($(OBJTREE),$(SRCTREE))
	ifeq ($(CURDIR),$(SRCTREE))
	dir :=
	else
	dir := $(subst $(SRCTREE)/,,$(CURDIR))
	endif

	obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
	src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)

	$(shell mkdir -p $(obj))
	else
	obj :=
	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)
	HOSTCC = cc
	HOSTCFLAGS += -traditional-cpp
	HOSTLDFLAGS += -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 (courtesy linux kernel) to ensure
	# only supported compiler options are used
	#
	cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
	> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)

	#
	# Include the make variables (CC, etc...)
	#
	AS = $(CROSS_COMPILE)as
	LD = $(CROSS_COMPILE)ld
	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

	#########################################################################

	# Load generated board configuration
	sinclude $(OBJTREE)/include/autoconf.mk

	ifdef ARCH
	sinclude $(TOPDIR)/lib_$(ARCH)/config.mk # include architecture dependend rules
	endif
	ifdef CPU
	sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
	endif
	ifdef SOC
	sinclude $(TOPDIR)/cpu/$(CPU)/$(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

	#########################################################################

	ifneq (,$(findstring s,$(MAKEFLAGS)))
	ARFLAGS = cr
	else
	ARFLAGS = crv
	endif
	RELFLAGS= $(PLATFORM_RELFLAGS)
	DBGFLAGS= -g # -DDEBUG
	OPTFLAGS= -Os #-fomit-frame-pointer
	ifndef LDSCRIPT
	#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
	ifeq ($(CONFIG_NAND_U_BOOT),y)
	LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
	else
	LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
	endif
	endif
	OBJCFLAGS += --gap-fill=0xff

	gccincdir := $(shell $(CC) -print-file-name=include)

	CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
	-D__KERNEL__
	ifneq ($(TEXT_BASE),)
	CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
	endif

	ifneq ($(RESET_VECTOR_ADDRESS),)
	CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
	endif

	ifneq ($(OBJTREE),$(SRCTREE))
	CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
	endif

	CPPFLAGS += -I$(TOPDIR)/include
	CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
	-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)

	ifdef BUILD_TAG
	CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
	-DBUILD_TAG='"$(BUILD_TAG)"'
	else
	CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
	endif

	CFLAGS += $(call cc-option,-fno-stack-protector)

	# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
	# this option have to be placed behind -Wall -- that's why it is here
	ifeq ($(ARCH),nios)
	ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
	CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
	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 += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS)
	ifneq ($(TEXT_BASE),)
	LDFLAGS += -Ttext $(TEXT_BASE)
	endif

	# 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 TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS

	#########################################################################

	# Allow boards to use custom optimize flags on a per dir/file basis
	BCURDIR := $(notdir $(CURDIR))
	$(obj)%.s: %.S
	$(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $<
	$(obj)%.o: %.S
	$(CC) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c
	$(obj)%.o: %.c
	$(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
	$(obj)%.i: %.c
	$(CPP) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
	$(obj)%.s: %.c
	$(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c -S

	#########################################################################