1# 2# (C) Copyright 2000 3# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4# 5# See file CREDITS for list of people who contributed to this 6# project. 7# 8# This program is free software; you can redistribute it and/or 9# modify it under the terms of the GNU General Public License as 10# published by the Free Software Foundation; either version 2 of 11# the License, or (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program; if not, write to the Free Software 20# Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21# MA 02111-1307 USA 22# 23 24######################################################################### 25 26# clean the slate ... 27PLATFORM_RELFLAGS = 28PLATFORM_CPPFLAGS = 29PLATFORM_LDFLAGS = 30 31# 32# When cross-compiling on NetBSD, we have to define __PPC__ or else we 33# will pick up a va_list declaration that is incompatible with the 34# actual argument lists emitted by the compiler. 35# 36# [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3] 37 38ifeq ($(ARCH),ppc) 39ifeq ($(CROSS_COMPILE),powerpc-netbsd-) 40PLATFORM_CPPFLAGS+= -D__PPC__ 41endif 42ifeq ($(CROSS_COMPILE),powerpc-openbsd-) 43PLATFORM_CPPFLAGS+= -D__PPC__ 44endif 45endif 46 47ifeq ($(ARCH),arm) 48ifeq ($(CROSS_COMPILE),powerpc-netbsd-) 49PLATFORM_CPPFLAGS+= -D__ARM__ 50endif 51ifeq ($(CROSS_COMPILE),powerpc-openbsd-) 52PLATFORM_CPPFLAGS+= -D__ARM__ 53endif 54endif 55 56ifdef ARCH 57sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules 58endif 59ifdef CPU 60sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules 61endif 62ifdef SOC 63sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules 64endif 65ifdef VENDOR 66BOARDDIR = $(VENDOR)/$(BOARD) 67else 68BOARDDIR = $(BOARD) 69endif 70ifdef BOARD 71sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules 72endif 73 74######################################################################### 75 76CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 77 else if [ -x /bin/bash ]; then echo /bin/bash; \ 78 else echo sh; fi ; fi) 79 80ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) 81HOSTCC = cc 82else 83HOSTCC = gcc 84endif 85HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 86HOSTSTRIP = strip 87 88######################################################################### 89 90# 91# Include the make variables (CC, etc...) 92# 93AS = $(CROSS_COMPILE)as 94LD = $(CROSS_COMPILE)ld 95CC = $(CROSS_COMPILE)gcc 96CPP = $(CC) -E 97AR = $(CROSS_COMPILE)ar 98NM = $(CROSS_COMPILE)nm 99STRIP = $(CROSS_COMPILE)strip 100OBJCOPY = $(CROSS_COMPILE)objcopy 101OBJDUMP = $(CROSS_COMPILE)objdump 102RANLIB = $(CROSS_COMPILE)RANLIB 103 104RELFLAGS= $(PLATFORM_RELFLAGS) 105DBGFLAGS= -g #-DDEBUG 106OPTFLAGS= -Os #-fomit-frame-pointer 107ifndef LDSCRIPT 108#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug 109LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds 110endif 111OBJCFLAGS += --gap-fill=0xff 112 113gccincdir := $(shell $(CC) -print-file-name=include) 114 115CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ 116 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \ 117 -I$(TOPDIR)/include \ 118 -fno-builtin -ffreestanding -nostdinc -isystem \ 119 $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) 120 121ifdef BUILD_TAG 122CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ 123 -DBUILD_TAG='"$(BUILD_TAG)"' 124else 125CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes 126endif 127 128# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9) 129# this option have to be placed behind -Wall -- that's why it is here 130ifeq ($(ARCH),nios) 131ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9) 132CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs 133endif 134endif 135 136AFLAGS_DEBUG := -Wa,-gstabs 137AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) 138 139LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS) 140 141# Location of a usable BFD library, where we define "usable" as 142# "built for ${HOST}, supports ${TARGET}". Sensible values are 143# - When cross-compiling: the root of the cross-environment 144# - Linux/ppc (native): /usr 145# - NetBSD/ppc (native): you lose ... (must extract these from the 146# binutils build directory, plus the native and U-Boot include 147# files don't like each other) 148# 149# So far, this is used only by tools/gdb/Makefile. 150 151ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) 152BFD_ROOT_DIR = /usr/local/tools 153else 154ifeq ($(HOSTARCH),$(ARCH)) 155# native 156BFD_ROOT_DIR = /usr 157else 158#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 159#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 160BFD_ROOT_DIR = /opt/powerpc 161endif 162endif 163 164######################################################################### 165 166export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \ 167 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \ 168 MAKE 169export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS 170 171######################################################################### 172 173%.s: %.S 174 $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$< 175%.o: %.S 176 $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$< 177%.o: %.c 178 $(CC) $(CFLAGS) -c -o $@ $< 179 180######################################################################### 181