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# 27# When cross-compiling on NetBSD, we have to define __PPC__ or else we 28# will pick up a va_list declaration that is incompatible with the 29# actual argument lists emitted by the compiler. 30# 31# [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3] 32 33ifeq ($(ARCH),ppc) 34ifeq ($(CROSS_COMPILE),powerpc-netbsd-) 35PLATFORM_CPPFLAGS+= -D__PPC__ 36endif 37ifeq ($(CROSS_COMPILE),powerpc-openbsd-) 38PLATFORM_CPPFLAGS+= -D__PPC__ 39endif 40endif 41 42ifeq ($(ARCH),arm) 43ifeq ($(CROSS_COMPILE),powerpc-netbsd-) 44PLATFORM_CPPFLAGS+= -D__ARM__ 45endif 46ifeq ($(CROSS_COMPILE),powerpc-openbsd-) 47PLATFORM_CPPFLAGS+= -D__ARM__ 48endif 49endif 50 51ifdef ARCH 52sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules 53endif 54ifdef CPU 55sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules 56endif 57ifdef VENDOR 58BOARDDIR = $(VENDOR)/$(BOARD) 59else 60BOARDDIR = $(BOARD) 61endif 62ifdef BOARD 63sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules 64endif 65 66######################################################################### 67 68CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 69 else if [ -x /bin/bash ]; then echo /bin/bash; \ 70 else echo sh; fi ; fi) 71 72ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) 73HOSTCC = cc 74else 75HOSTCC = gcc 76endif 77HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 78HOSTSTRIP = strip 79 80######################################################################### 81 82# 83# Include the make variables (CC, etc...) 84# 85AS = $(CROSS_COMPILE)as 86LD = $(CROSS_COMPILE)ld 87CC = $(CROSS_COMPILE)gcc 88CPP = $(CC) -E 89AR = $(CROSS_COMPILE)ar 90NM = $(CROSS_COMPILE)nm 91STRIP = $(CROSS_COMPILE)strip 92OBJCOPY = $(CROSS_COMPILE)objcopy 93OBJDUMP = $(CROSS_COMPILE)objdump 94RANLIB = $(CROSS_COMPILE)RANLIB 95 96RELFLAGS= $(PLATFORM_RELFLAGS) 97DBGFLAGS= -g #-DDEBUG 98OPTFLAGS= -Os #-fomit-frame-pointer 99ifndef LDSCRIPT 100#LDSCRIPT := board/$(BOARDDIR)/u-boot.lds.debug 101LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds 102endif 103OBJCFLAGS += --gap-fill=0xff 104 105CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ 106 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \ 107 -I$(TOPDIR)/include \ 108 -fno-builtin \ 109 -pipe $(PLATFORM_CPPFLAGS) 110 111ifdef BUILD_TAG 112CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ 113 -DBUILD_TAG='"$(BUILD_TAG)"' 114else 115CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes 116endif 117 118AFLAGS_DEBUG := -Wa,-gstabs 119AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) 120 121LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS) 122 123# Location of a usable BFD library, where we define "usable" as 124# "built for ${HOST}, supports ${TARGET}". Sensible values are 125# - When cross-compiling: the root of the cross-environment 126# - Linux/ppc (native): /usr 127# - NetBSD/ppc (native): you lose ... (must extract these from the 128# binutils build directory, plus the native and U-Boot include 129# files don't like each other) 130# 131# So far, this is used only by tools/gdb/Makefile. 132 133ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) 134BFD_ROOT_DIR = /usr/local/tools 135else 136ifeq ($(HOSTARCH),$(ARCH)) 137# native 138BFD_ROOT_DIR = /usr 139else 140#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 141#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 142BFD_ROOT_DIR = /opt/powerpc 143endif 144endif 145 146######################################################################### 147 148export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \ 149 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \ 150 MAKE 151export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS 152 153######################################################################### 154 155%.s: %.S 156 $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$< 157%.o: %.S 158 $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$< 159%.o: %.c 160 $(CC) $(CFLAGS) -c -o $@ $< 161 162######################################################################### 163