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wdenke2211742002-11-02 23:30:20 +00001#
Marian Balakowiczf9328632006-09-01 19:49:50 +02002# (C) Copyright 2000-2006
wdenke2211742002-11-02 23:30:20 +00003# 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
Marian Balakowiczf9328632006-09-01 19:49:50 +020026ifneq ($(OBJTREE),$(SRCTREE))
27ifeq ($(CURDIR),$(SRCTREE))
Wolfgang Denk511d0c72006-10-09 00:42:01 +020028dir :=
Marian Balakowiczf9328632006-09-01 19:49:50 +020029else
30dir := $(subst $(SRCTREE)/,,$(CURDIR))
31endif
32
33obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
34src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
35
36$(shell mkdir -p $(obj))
37else
38obj :=
39src :=
40endif
41
wdenk592c5ca2003-06-21 00:17:24 +000042# clean the slate ...
43PLATFORM_RELFLAGS =
44PLATFORM_CPPFLAGS =
45PLATFORM_LDFLAGS =
46
wdenke2211742002-11-02 23:30:20 +000047#
48# When cross-compiling on NetBSD, we have to define __PPC__ or else we
49# will pick up a va_list declaration that is incompatible with the
50# actual argument lists emitted by the compiler.
51#
52# [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3]
53
54ifeq ($(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 ($(CROSS_COMPILE),powerpc-openbsd-)
68PLATFORM_CPPFLAGS+= -D__ARM__
69endif
70endif
71
Wolfgang Denk0afe5192006-03-12 02:10:00 +010072ifeq ($(ARCH),blackfin)
73PLATFORM_CPPFLAGS+= -D__BLACKFIN__ -mno-underscore
74endif
75
wdenke2211742002-11-02 23:30:20 +000076ifdef ARCH
77sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules
78endif
79ifdef CPU
80sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
81endif
wdenk1d9f4102004-10-09 22:21:29 +000082ifdef SOC
83sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
84endif
wdenke2211742002-11-02 23:30:20 +000085ifdef 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#########################################################################
Wolfgang Denk1820d4c2005-10-04 22:38:24 +0200109#
110# Option checker (courtesy linux kernel) to ensure
111# only supported compiler options are used
112#
113cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
Wolfgang Denk9b880bd2005-10-04 23:10:28 +0200114 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
wdenke2211742002-11-02 23:30:20 +0000115
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 = $(CROSS_COMPILE)RANLIB
129
Wolfgang Denk1954be62006-10-29 01:03:51 +0200130ifneq (,$(findstring s,$(MAKEFLAGS)))
131ARFLAGS = cr
132else
Wolfgang Denk2b208f52006-10-09 01:02:05 +0200133ARFLAGS = crv
Wolfgang Denk1954be62006-10-29 01:03:51 +0200134endif
wdenke2211742002-11-02 23:30:20 +0000135RELFLAGS= $(PLATFORM_RELFLAGS)
Heiko Schocher9acb6262006-04-20 08:42:42 +0200136DBGFLAGS= -g # -DDEBUG
wdenke2211742002-11-02 23:30:20 +0000137OPTFLAGS= -Os #-fomit-frame-pointer
wdenk6dd652f2003-06-19 23:40:20 +0000138ifndef LDSCRIPT
wdenk4aeb2512003-09-16 17:06:05 +0000139#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
Stefan Roese887e2ec2006-09-07 11:51:23 +0200140ifeq ($(CONFIG_NAND_U_BOOT),y)
141LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
142else
wdenke2211742002-11-02 23:30:20 +0000143LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
wdenk6dd652f2003-06-19 23:40:20 +0000144endif
Stefan Roese887e2ec2006-09-07 11:51:23 +0200145endif
wdenk6dd652f2003-06-19 23:40:20 +0000146OBJCFLAGS += --gap-fill=0xff
wdenke2211742002-11-02 23:30:20 +0000147
wdenkb783eda2003-06-25 22:26:29 +0000148gccincdir := $(shell $(CC) -print-file-name=include)
149
wdenke2211742002-11-02 23:30:20 +0000150CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
151 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \
Marian Balakowiczf9328632006-09-01 19:49:50 +0200152
153ifneq ($(OBJTREE),$(SRCTREE))
154CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
155endif
156
157CPPFLAGS += -I$(TOPDIR)/include
158CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
159 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
wdenke2211742002-11-02 23:30:20 +0000160
161ifdef BUILD_TAG
162CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
163 -DBUILD_TAG='"$(BUILD_TAG)"'
164else
165CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
166endif
167
wdenkc40b2952004-03-13 23:29:43 +0000168# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
169# this option have to be placed behind -Wall -- that's why it is here
170ifeq ($(ARCH),nios)
171ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
wdenke4cc71a2004-05-19 21:33:14 +0000172CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
wdenkc40b2952004-03-13 23:29:43 +0000173endif
174endif
175
Haavard Skinnemoene11887a2006-10-26 17:55:31 +0200176# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
177# option to the assembler.
178AFLAGS_DEBUG :=
Marian Balakowiczb62fa912006-05-17 12:18:48 +0200179
Marian Balakowicz483a0cf2006-05-09 11:28:36 +0200180# turn jbsr into jsr for m68k
181ifeq ($(ARCH),m68k)
182ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
183AFLAGS_DEBUG := -Wa,-gstabs,-S
184endif
Marian Balakowicz483a0cf2006-05-09 11:28:36 +0200185endif
Marian Balakowiczb62fa912006-05-17 12:18:48 +0200186
wdenke2211742002-11-02 23:30:20 +0000187AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
188
wdenk7f6c2cb2002-11-10 22:06:23 +0000189LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
wdenke2211742002-11-02 23:30:20 +0000190
191# Location of a usable BFD library, where we define "usable" as
192# "built for ${HOST}, supports ${TARGET}". Sensible values are
193# - When cross-compiling: the root of the cross-environment
194# - Linux/ppc (native): /usr
195# - NetBSD/ppc (native): you lose ... (must extract these from the
196# binutils build directory, plus the native and U-Boot include
197# files don't like each other)
198#
199# So far, this is used only by tools/gdb/Makefile.
200
201ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
202BFD_ROOT_DIR = /usr/local/tools
203else
wdenkea909b72002-11-21 23:11:29 +0000204ifeq ($(HOSTARCH),$(ARCH))
205# native
206BFD_ROOT_DIR = /usr
207else
wdenke2211742002-11-02 23:30:20 +0000208#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
209#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
wdenke2211742002-11-02 23:30:20 +0000210BFD_ROOT_DIR = /opt/powerpc
211endif
wdenkea909b72002-11-21 23:11:29 +0000212endif
wdenke2211742002-11-02 23:30:20 +0000213
Eran Libertyf046ccd2005-07-28 10:08:46 -0500214ifeq ($(PCI_CLOCK),PCI_66M)
215CFLAGS := $(CFLAGS) -DPCI_66M
216endif
217
wdenke2211742002-11-02 23:30:20 +0000218#########################################################################
219
220export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
221 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
222 MAKE
223export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
224
225#########################################################################
226
Marian Balakowiczf9328632006-09-01 19:49:50 +0200227ifndef REMOTE_BUILD
228
wdenke2211742002-11-02 23:30:20 +0000229%.s: %.S
Marian Balakowiczf9328632006-09-01 19:49:50 +0200230 $(CPP) $(AFLAGS) -o $@ $<
wdenke2211742002-11-02 23:30:20 +0000231%.o: %.S
Marian Balakowiczf9328632006-09-01 19:49:50 +0200232 $(CC) $(AFLAGS) -c -o $@ $<
wdenke2211742002-11-02 23:30:20 +0000233%.o: %.c
234 $(CC) $(CFLAGS) -c -o $@ $<
235
Marian Balakowiczf9328632006-09-01 19:49:50 +0200236else
237
238$(obj)%.s: %.S
239 $(CPP) $(AFLAGS) -o $@ $<
240$(obj)%.o: %.S
241 $(CC) $(AFLAGS) -c -o $@ $<
242$(obj)%.o: %.c
243 $(CC) $(CFLAGS) -c -o $@ $<
244endif
245
wdenke2211742002-11-02 23:30:20 +0000246#########################################################################