| # |
| # (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 $(obj)) |
| else |
| obj := |
| src := |
| endif |
| |
| # clean the slate ... |
| PLATFORM_RELFLAGS = |
| PLATFORM_CPPFLAGS = |
| PLATFORM_LDFLAGS = |
| |
| ######################################################################### |
| |
| ifeq ($(HOSTOS),darwin) |
| HOSTCC = cc |
| else |
| HOSTCC = gcc |
| endif |
| HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
| HOSTSTRIP = strip |
| |
| ######################################################################### |
| # |
| # 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 $(TOPDIR)/$(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=$(TEXT_BASE) |
| endif |
| |
| ifneq ($(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 $(LDSCRIPT) $(PLATFORM_LDFLAGS) |
| ifneq ($(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 |
| |
| ifeq ($(PCI_CLOCK),PCI_66M) |
| CFLAGS := $(CFLAGS) -DPCI_66M |
| endif |
| |
| ######################################################################### |
| |
| export HPATH HOSTCC HOSTCFLAGS 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 |
| |
| ######################################################################### |