2 # (C) Copyright 2000-2006
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # See file CREDITS for list of people who contributed to this
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.
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.
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,
24 #########################################################################
26 ifneq ($(OBJTREE),$(SRCTREE))
27 ifeq ($(CURDIR),$(SRCTREE))
30 dir := $(subst $(SRCTREE)/,,$(CURDIR))
33 obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
34 src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
36 $(shell mkdir -p $(obj))
48 # When cross-compiling on NetBSD, we have to define __PPC__ or else we
49 # will pick up a va_list declaration that is incompatible with the
50 # actual argument lists emitted by the compiler.
52 # [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3]
55 ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
56 PLATFORM_CPPFLAGS+= -D__PPC__
58 ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
59 PLATFORM_CPPFLAGS+= -D__PPC__
64 ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
65 PLATFORM_CPPFLAGS+= -D__ARM__
67 ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
68 PLATFORM_CPPFLAGS+= -D__ARM__
72 ifeq ($(ARCH),blackfin)
73 PLATFORM_CPPFLAGS+= -D__BLACKFIN__
77 sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules
80 sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
83 sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
86 BOARDDIR = $(VENDOR)/$(BOARD)
91 sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
94 #########################################################################
96 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
97 else if [ -x /bin/bash ]; then echo /bin/bash; \
98 else echo sh; fi ; fi)
100 ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
105 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
108 #########################################################################
110 # Option checker (courtesy linux kernel) to ensure
111 # only supported compiler options are used
113 cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
114 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
117 # Include the make variables (CC, etc...)
119 AS = $(CROSS_COMPILE)as
120 LD = $(CROSS_COMPILE)ld
121 CC = $(CROSS_COMPILE)gcc
123 AR = $(CROSS_COMPILE)ar
124 NM = $(CROSS_COMPILE)nm
125 STRIP = $(CROSS_COMPILE)strip
126 OBJCOPY = $(CROSS_COMPILE)objcopy
127 OBJDUMP = $(CROSS_COMPILE)objdump
128 RANLIB = $(CROSS_COMPILE)RANLIB
130 ifneq (,$(findstring s,$(MAKEFLAGS)))
135 RELFLAGS= $(PLATFORM_RELFLAGS)
136 DBGFLAGS= -g # -DDEBUG
137 OPTFLAGS= -Os #-fomit-frame-pointer
139 #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
140 ifeq ($(CONFIG_NAND_U_BOOT),y)
141 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
143 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
146 OBJCFLAGS += --gap-fill=0xff
148 gccincdir := $(shell $(CC) -print-file-name=include)
150 CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
151 -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \
153 ifneq ($(OBJTREE),$(SRCTREE))
154 CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
157 CPPFLAGS += -I$(TOPDIR)/include
158 CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
159 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
162 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
163 -DBUILD_TAG='"$(BUILD_TAG)"'
165 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
168 # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
169 # this option have to be placed behind -Wall -- that's why it is here
171 ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
172 CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
176 # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
177 # option to the assembler.
180 # turn jbsr into jsr for m68k
182 ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
183 AFLAGS_DEBUG := -Wa,-gstabs,-S
187 AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
189 LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
191 # Location of a usable BFD library, where we define "usable" as
192 # "built for ${HOST}, supports ${TARGET}". Sensible values are
193 # - When cross-compiling: the root of the cross-environment
194 # - Linux/ppc (native): /usr
195 # - NetBSD/ppc (native): you lose ... (must extract these from the
196 # binutils build directory, plus the native and U-Boot include
197 # files don't like each other)
199 # So far, this is used only by tools/gdb/Makefile.
201 ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
202 BFD_ROOT_DIR = /usr/local/tools
204 ifeq ($(HOSTARCH),$(ARCH))
208 #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
209 #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
210 BFD_ROOT_DIR = /opt/powerpc
214 ifeq ($(PCI_CLOCK),PCI_66M)
215 CFLAGS := $(CFLAGS) -DPCI_66M
218 #########################################################################
220 export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
221 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
223 export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
225 #########################################################################
230 $(CPP) $(AFLAGS) -o $@ $<
232 $(CC) $(AFLAGS) -c -o $@ $<
234 $(CC) $(CFLAGS) -c -o $@ $<
239 $(CPP) $(AFLAGS) -o $@ $<
241 $(CC) $(AFLAGS) -c -o $@ $<
243 $(CC) $(CFLAGS) -c -o $@ $<
246 #########################################################################