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 VENDOR 63BOARDDIR = $(VENDOR)/$(BOARD) 64else 65BOARDDIR = $(BOARD) 66endif 67ifdef BOARD 68sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules 69endif 70 71######################################################################### 72 73CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 74 else if [ -x /bin/bash ]; then echo /bin/bash; \ 75 else echo sh; fi ; fi) 76 77ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) 78HOSTCC = cc 79else 80HOSTCC = gcc 81endif 82HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 83HOSTSTRIP = strip 84 85######################################################################### 86 87# 88# Include the make variables (CC, etc...) 89# 90AS = $(CROSS_COMPILE)as 91LD = $(CROSS_COMPILE)ld 92CC = $(CROSS_COMPILE)gcc 93CPP = $(CC) -E 94AR = $(CROSS_COMPILE)ar 95NM = $(CROSS_COMPILE)nm 96STRIP = $(CROSS_COMPILE)strip 97OBJCOPY = $(CROSS_COMPILE)objcopy 98OBJDUMP = $(CROSS_COMPILE)objdump 99RANLIB = $(CROSS_COMPILE)RANLIB 100 101RELFLAGS= $(PLATFORM_RELFLAGS) 102DBGFLAGS= -g #-DDEBUG 103OPTFLAGS= -Os #-fomit-frame-pointer 104ifndef LDSCRIPT 105#LDSCRIPT := board/$(BOARDDIR)/u-boot.lds.debug 106LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds 107endif 108OBJCFLAGS += --gap-fill=0xff 109 110gccincdir := $(shell $(CC) -print-file-name=include) 111 112CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ 113 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \ 114 -I$(TOPDIR)/include \ 115 -fno-builtin -nostdinc -isystem $(gccincdir) \ 116 -pipe $(PLATFORM_CPPFLAGS) 117 118ifdef BUILD_TAG 119CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ 120 -DBUILD_TAG='"$(BUILD_TAG)"' 121else 122CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes 123endif 124 125AFLAGS_DEBUG := -Wa,-gstabs 126AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) 127 128LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS) 129 130# Location of a usable BFD library, where we define "usable" as 131# "built for ${HOST}, supports ${TARGET}". Sensible values are 132# - When cross-compiling: the root of the cross-environment 133# - Linux/ppc (native): /usr 134# - NetBSD/ppc (native): you lose ... (must extract these from the 135# binutils build directory, plus the native and U-Boot include 136# files don't like each other) 137# 138# So far, this is used only by tools/gdb/Makefile. 139 140ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) 141BFD_ROOT_DIR = /usr/local/tools 142else 143ifeq ($(HOSTARCH),$(ARCH)) 144# native 145BFD_ROOT_DIR = /usr 146else 147#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 148#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 149BFD_ROOT_DIR = /opt/powerpc 150endif 151endif 152 153######################################################################### 154 155export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \ 156 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \ 157 MAKE 158export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS 159 160######################################################################### 161 162%.s: %.S 163 $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$< 164%.o: %.S 165 $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$< 166%.o: %.c 167 $(CC) $(CFLAGS) -c -o $@ $< 168 169######################################################################### 170