Merge branch 'next' of ../master
[people/ms/u-boot.git] / config.mk
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e2211743 1#
f9328639 2# (C) Copyright 2000-2006
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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
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26ifneq ($(OBJTREE),$(SRCTREE))
27ifeq ($(CURDIR),$(SRCTREE))
511d0c72 28dir :=
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29else
30dir := $(subst $(SRCTREE)/,,$(CURDIR))
31endif
32
33obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
34src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
35
36$(shell mkdir -p $(obj))
37else
38obj :=
39src :=
40endif
41
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42# clean the slate ...
43PLATFORM_RELFLAGS =
44PLATFORM_CPPFLAGS =
45PLATFORM_LDFLAGS =
46
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47#########################################################################
48
4cda4378 49ifeq ($(HOSTOS),darwin)
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50HOSTCC = cc
51else
52HOSTCC = gcc
53endif
54HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
55HOSTSTRIP = strip
56
57#########################################################################
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58#
59# Option checker (courtesy linux kernel) to ensure
60# only supported compiler options are used
61#
62cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
9b880bd4 63 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
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64
65#
66# Include the make variables (CC, etc...)
67#
68AS = $(CROSS_COMPILE)as
69LD = $(CROSS_COMPILE)ld
70CC = $(CROSS_COMPILE)gcc
71CPP = $(CC) -E
72AR = $(CROSS_COMPILE)ar
73NM = $(CROSS_COMPILE)nm
94a91e24 74LDR = $(CROSS_COMPILE)ldr
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75STRIP = $(CROSS_COMPILE)strip
76OBJCOPY = $(CROSS_COMPILE)objcopy
77OBJDUMP = $(CROSS_COMPILE)objdump
78RANLIB = $(CROSS_COMPILE)RANLIB
79
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80#########################################################################
81
82# Load generated board configuration
83sinclude $(OBJTREE)/include/autoconf.mk
84
85ifdef ARCH
86sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules
87endif
88ifdef CPU
89sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
90endif
91ifdef SOC
92sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
93endif
94ifdef VENDOR
95BOARDDIR = $(VENDOR)/$(BOARD)
96else
97BOARDDIR = $(BOARD)
98endif
99ifdef BOARD
100sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
101endif
102
103#########################################################################
104
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105ifneq (,$(findstring s,$(MAKEFLAGS)))
106ARFLAGS = cr
107else
2b208f53 108ARFLAGS = crv
1954be6e 109endif
e2211743 110RELFLAGS= $(PLATFORM_RELFLAGS)
9acb626f 111DBGFLAGS= -g # -DDEBUG
e2211743 112OPTFLAGS= -Os #-fomit-frame-pointer
6dd652fa 113ifndef LDSCRIPT
4aeb251f 114#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
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115ifeq ($(CONFIG_NAND_U_BOOT),y)
116LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
117else
e2211743 118LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
6dd652fa 119endif
887e2ec9 120endif
6dd652fa 121OBJCFLAGS += --gap-fill=0xff
e2211743 122
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123gccincdir := $(shell $(CC) -print-file-name=include)
124
e2211743 125CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
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126 -D__KERNEL__
127ifneq ($(TEXT_BASE),)
128CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
129endif
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130
131ifneq ($(OBJTREE),$(SRCTREE))
132CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
133endif
134
135CPPFLAGS += -I$(TOPDIR)/include
53677ef1 136CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
f9328639 137 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
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138
139ifdef BUILD_TAG
140CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
141 -DBUILD_TAG='"$(BUILD_TAG)"'
142else
143CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
144endif
145
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146CFLAGS += $(call cc-option,-fno-stack-protector)
147
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148# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
149# this option have to be placed behind -Wall -- that's why it is here
150ifeq ($(ARCH),nios)
151ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
e4cc71aa 152CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
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153endif
154endif
155
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156# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
157# option to the assembler.
158AFLAGS_DEBUG :=
b62fa913 159
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160# turn jbsr into jsr for m68k
161ifeq ($(ARCH),m68k)
162ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
163AFLAGS_DEBUG := -Wa,-gstabs,-S
164endif
483a0cf8 165endif
b62fa913 166
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167AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
168
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169LDFLAGS += -Bstatic -T $(LDSCRIPT) $(PLATFORM_LDFLAGS)
170ifneq ($(TEXT_BASE),)
171LDFLAGS += -Ttext $(TEXT_BASE)
172endif
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173
174# Location of a usable BFD library, where we define "usable" as
175# "built for ${HOST}, supports ${TARGET}". Sensible values are
176# - When cross-compiling: the root of the cross-environment
177# - Linux/ppc (native): /usr
178# - NetBSD/ppc (native): you lose ... (must extract these from the
179# binutils build directory, plus the native and U-Boot include
180# files don't like each other)
181#
182# So far, this is used only by tools/gdb/Makefile.
183
4cda4378 184ifeq ($(HOSTOS),darwin)
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185BFD_ROOT_DIR = /usr/local/tools
186else
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187ifeq ($(HOSTARCH),$(ARCH))
188# native
189BFD_ROOT_DIR = /usr
190else
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191#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
192#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
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193BFD_ROOT_DIR = /opt/powerpc
194endif
ea909b76 195endif
e2211743 196
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197ifeq ($(PCI_CLOCK),PCI_66M)
198CFLAGS := $(CFLAGS) -DPCI_66M
199endif
200
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201#########################################################################
202
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203export HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
204 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
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205export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
206
207#########################################################################
208
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209$(obj)%.s: %.S
210 $(CPP) $(AFLAGS) -o $@ $<
211$(obj)%.o: %.S
212 $(CC) $(AFLAGS) -c -o $@ $<
213$(obj)%.o: %.c
214 $(CC) $(CFLAGS) -c -o $@ $<
f9328639 215
e2211743 216#########################################################################