Update CHANGELOG.
[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 $(obj))
37else
38obj :=
39src :=
40endif
41
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42# clean the slate ...
43PLATFORM_RELFLAGS =
44PLATFORM_CPPFLAGS =
45PLATFORM_LDFLAGS =
46
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47#
48# When cross-compiling on NetBSD, we have to define __PPC__ or else we
49# will pick up a va_list declaration that is incompatible with the
50# actual argument lists emitted by the compiler.
51#
52# [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3]
53
54ifeq ($(ARCH),ppc)
55ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
56PLATFORM_CPPFLAGS+= -D__PPC__
57endif
58ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
59PLATFORM_CPPFLAGS+= -D__PPC__
60endif
61endif
62
63ifeq ($(ARCH),arm)
64ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
65PLATFORM_CPPFLAGS+= -D__ARM__
66endif
67ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
68PLATFORM_CPPFLAGS+= -D__ARM__
69endif
70endif
71
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72ifeq ($(ARCH),blackfin)
73PLATFORM_CPPFLAGS+= -D__BLACKFIN__ -mno-underscore
74endif
75
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76ifdef ARCH
77sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules
78endif
79ifdef CPU
80sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
81endif
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82ifdef SOC
83sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
84endif
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85ifdef VENDOR
86BOARDDIR = $(VENDOR)/$(BOARD)
87else
88BOARDDIR = $(BOARD)
89endif
90ifdef BOARD
91sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
92endif
93
94#########################################################################
95
96CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
97 else if [ -x /bin/bash ]; then echo /bin/bash; \
98 else echo sh; fi ; fi)
99
100ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
101HOSTCC = cc
102else
103HOSTCC = gcc
104endif
105HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
106HOSTSTRIP = strip
107
108#########################################################################
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109#
110# Option checker (courtesy linux kernel) to ensure
111# only supported compiler options are used
112#
113cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
9b880bd4 114 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
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115
116#
117# Include the make variables (CC, etc...)
118#
119AS = $(CROSS_COMPILE)as
120LD = $(CROSS_COMPILE)ld
121CC = $(CROSS_COMPILE)gcc
122CPP = $(CC) -E
123AR = $(CROSS_COMPILE)ar
124NM = $(CROSS_COMPILE)nm
125STRIP = $(CROSS_COMPILE)strip
126OBJCOPY = $(CROSS_COMPILE)objcopy
127OBJDUMP = $(CROSS_COMPILE)objdump
128RANLIB = $(CROSS_COMPILE)RANLIB
129
2b208f53 130ARFLAGS = crv
e2211743 131RELFLAGS= $(PLATFORM_RELFLAGS)
9acb626f 132DBGFLAGS= -g # -DDEBUG
e2211743 133OPTFLAGS= -Os #-fomit-frame-pointer
6dd652fa 134ifndef LDSCRIPT
4aeb251f 135#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
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136ifeq ($(CONFIG_NAND_U_BOOT),y)
137LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
138else
e2211743 139LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
6dd652fa 140endif
887e2ec9 141endif
6dd652fa 142OBJCFLAGS += --gap-fill=0xff
e2211743 143
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144gccincdir := $(shell $(CC) -print-file-name=include)
145
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146CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
147 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \
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148
149ifneq ($(OBJTREE),$(SRCTREE))
150CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
151endif
152
153CPPFLAGS += -I$(TOPDIR)/include
154CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
155 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
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156
157ifdef BUILD_TAG
158CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
159 -DBUILD_TAG='"$(BUILD_TAG)"'
160else
161CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
162endif
163
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164# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
165# this option have to be placed behind -Wall -- that's why it is here
166ifeq ($(ARCH),nios)
167ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
e4cc71aa 168CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
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169endif
170endif
171
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172# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
173# option to the assembler.
174AFLAGS_DEBUG :=
b62fa913 175
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176# turn jbsr into jsr for m68k
177ifeq ($(ARCH),m68k)
178ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
179AFLAGS_DEBUG := -Wa,-gstabs,-S
180endif
483a0cf8 181endif
b62fa913 182
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183AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
184
7f6c2cbc 185LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
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186
187# Location of a usable BFD library, where we define "usable" as
188# "built for ${HOST}, supports ${TARGET}". Sensible values are
189# - When cross-compiling: the root of the cross-environment
190# - Linux/ppc (native): /usr
191# - NetBSD/ppc (native): you lose ... (must extract these from the
192# binutils build directory, plus the native and U-Boot include
193# files don't like each other)
194#
195# So far, this is used only by tools/gdb/Makefile.
196
197ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
198BFD_ROOT_DIR = /usr/local/tools
199else
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200ifeq ($(HOSTARCH),$(ARCH))
201# native
202BFD_ROOT_DIR = /usr
203else
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204#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
205#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
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206BFD_ROOT_DIR = /opt/powerpc
207endif
ea909b76 208endif
e2211743 209
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210ifeq ($(PCI_CLOCK),PCI_66M)
211CFLAGS := $(CFLAGS) -DPCI_66M
212endif
213
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214#########################################################################
215
216export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
217 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
218 MAKE
219export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
220
221#########################################################################
222
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223ifndef REMOTE_BUILD
224
e2211743 225%.s: %.S
f9328639 226 $(CPP) $(AFLAGS) -o $@ $<
e2211743 227%.o: %.S
f9328639 228 $(CC) $(AFLAGS) -c -o $@ $<
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229%.o: %.c
230 $(CC) $(CFLAGS) -c -o $@ $<
231
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232else
233
234$(obj)%.s: %.S
235 $(CPP) $(AFLAGS) -o $@ $<
236$(obj)%.o: %.S
237 $(CC) $(AFLAGS) -c -o $@ $<
238$(obj)%.o: %.c
239 $(CC) $(CFLAGS) -c -o $@ $<
240endif
241
e2211743 242#########################################################################