Patch from Stefan Roese.
[people/ms/u-boot.git] / config.mk
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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
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26# clean the slate ...
27PLATFORM_RELFLAGS =
28PLATFORM_CPPFLAGS =
29PLATFORM_LDFLAGS =
30
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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= $(PLATFORM_RELFLAGS)
102DBGFLAGS= -g #-DDEBUG
103OPTFLAGS= -Os #-fomit-frame-pointer
6dd652fa 104ifndef LDSCRIPT
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105#LDSCRIPT := board/$(BOARDDIR)/u-boot.lds.debug
106LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
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107endif
108OBJCFLAGS += --gap-fill=0xff
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109
110CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
111 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \
112 -I$(TOPDIR)/include \
113 -fno-builtin \
114 -pipe $(PLATFORM_CPPFLAGS)
115
116ifdef BUILD_TAG
117CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
118 -DBUILD_TAG='"$(BUILD_TAG)"'
119else
120CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
121endif
122
123AFLAGS_DEBUG := -Wa,-gstabs
124AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
125
7f6c2cbc 126LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
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127
128# Location of a usable BFD library, where we define "usable" as
129# "built for ${HOST}, supports ${TARGET}". Sensible values are
130# - When cross-compiling: the root of the cross-environment
131# - Linux/ppc (native): /usr
132# - NetBSD/ppc (native): you lose ... (must extract these from the
133# binutils build directory, plus the native and U-Boot include
134# files don't like each other)
135#
136# So far, this is used only by tools/gdb/Makefile.
137
138ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
139BFD_ROOT_DIR = /usr/local/tools
140else
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141ifeq ($(HOSTARCH),$(ARCH))
142# native
143BFD_ROOT_DIR = /usr
144else
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145#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
146#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
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147BFD_ROOT_DIR = /opt/powerpc
148endif
ea909b76 149endif
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150
151#########################################################################
152
153export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
154 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
155 MAKE
156export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
157
158#########################################################################
159
160%.s: %.S
161 $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$<
162%.o: %.S
163 $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$<
164%.o: %.c
165 $(CC) $(CFLAGS) -c -o $@ $<
166
167#########################################################################