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
$(obj
))
47 #########################################################################
49 ifeq ($(HOSTOS
),darwin
)
54 HOSTCFLAGS
= -Wall
-Wstrict-prototypes
-O2
-fomit-frame-pointer
57 #########################################################################
59 # Option checker (courtesy linux kernel) to ensure
60 # only supported compiler options are used
62 cc-option
= $(shell if
$(CC
) $(CFLAGS
) $(1) -S
-o
/dev
/null
-xc
/dev
/null \
63 > /dev
/null
2>&1; then echo
"$(1)"; else echo
"$(2)"; fi
;)
66 # Include the make variables (CC, etc...)
68 AS
= $(CROSS_COMPILE
)as
69 LD
= $(CROSS_COMPILE
)ld
70 CC
= $(CROSS_COMPILE
)gcc
72 AR
= $(CROSS_COMPILE
)ar
73 NM
= $(CROSS_COMPILE
)nm
74 LDR
= $(CROSS_COMPILE
)ldr
75 STRIP
= $(CROSS_COMPILE
)strip
76 OBJCOPY
= $(CROSS_COMPILE
)objcopy
77 OBJDUMP
= $(CROSS_COMPILE
)objdump
78 RANLIB
= $(CROSS_COMPILE
)RANLIB
80 #########################################################################
82 # Load generated board configuration
83 sinclude
$(OBJTREE
)/include/autoconf.mk
86 sinclude
$(TOPDIR
)/$(ARCH
)_config.mk
# include architecture dependend rules
89 sinclude
$(TOPDIR
)/cpu
/$(CPU
)/config.mk
# include CPU specific rules
92 sinclude
$(TOPDIR
)/cpu
/$(CPU
)/$(SOC
)/config.mk
# include SoC specific rules
95 BOARDDIR
= $(VENDOR
)/$(BOARD
)
100 sinclude
$(TOPDIR
)/board
/$(BOARDDIR
)/config.mk
# include board specific rules
103 #########################################################################
105 ifneq (,$(findstring s
,$(MAKEFLAGS
)))
110 RELFLAGS
= $(PLATFORM_RELFLAGS
)
111 DBGFLAGS
= -g
# -DDEBUG
112 OPTFLAGS
= -Os
#-fomit-frame-pointer
114 #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
115 ifeq ($(CONFIG_NAND_U_BOOT
),y
)
116 LDSCRIPT
:= $(TOPDIR
)/board
/$(BOARDDIR
)/u-boot-nand.lds
118 LDSCRIPT
:= $(TOPDIR
)/board
/$(BOARDDIR
)/u-boot.lds
121 OBJCFLAGS
+= --gap-fill
=0xff
123 gccincdir
:= $(shell $(CC
) -print-file-name
=include)
125 CPPFLAGS
:= $(DBGFLAGS
) $(OPTFLAGS
) $(RELFLAGS
) \
127 ifneq ($(TEXT_BASE
),)
128 CPPFLAGS
+= -DTEXT_BASE
=$(TEXT_BASE
)
131 ifneq ($(OBJTREE
),$(SRCTREE
))
132 CPPFLAGS
+= -I
$(OBJTREE
)/include2
-I
$(OBJTREE
)/include
135 CPPFLAGS
+= -I
$(TOPDIR
)/include
136 CPPFLAGS
+= -fno-builtin
-ffreestanding
-nostdinc \
137 -isystem
$(gccincdir
) -pipe
$(PLATFORM_CPPFLAGS
)
140 CFLAGS
:= $(CPPFLAGS
) -Wall
-Wstrict-prototypes \
141 -DBUILD_TAG
='"$(BUILD_TAG)"'
143 CFLAGS
:= $(CPPFLAGS
) -Wall
-Wstrict-prototypes
146 CFLAGS
+= $(call cc-option
,-fno-stack-protector
)
148 # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
149 # this option have to be placed behind -Wall -- that's why it is here
151 ifeq ($(findstring 2.9,$(shell $(CC
) --version
)),2.9)
152 CFLAGS
:= $(CPPFLAGS
) -Wall
-Wno-trigraphs
156 # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
157 # option to the assembler.
160 # turn jbsr into jsr for m68k
162 ifeq ($(findstring 3.4,$(shell $(CC
) --version
)),3.4)
163 AFLAGS_DEBUG
:= -Wa
,-gstabs
,-S
167 AFLAGS
:= $(AFLAGS_DEBUG
) -D__ASSEMBLY__
$(CPPFLAGS
)
169 LDFLAGS
+= -Bstatic
-T
$(LDSCRIPT
) $(PLATFORM_LDFLAGS
)
170 ifneq ($(TEXT_BASE
),)
171 LDFLAGS
+= -Ttext
$(TEXT_BASE
)
174 # Location of a usable BFD library, where we define "usable" as
175 # "built for ${HOST}, supports ${TARGET}". Sensible values are
176 # - When cross-compiling: the root of the cross-environment
177 # - Linux/ppc (native): /usr
178 # - NetBSD/ppc (native): you lose ... (must extract these from the
179 # binutils build directory, plus the native and U-Boot include
180 # files don't like each other)
182 # So far, this is used only by tools/gdb/Makefile.
184 ifeq ($(HOSTOS
),darwin
)
185 BFD_ROOT_DIR
= /usr
/local
/tools
187 ifeq ($(HOSTARCH
),$(ARCH
))
191 #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
192 #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
193 BFD_ROOT_DIR
= /opt
/powerpc
197 ifeq ($(PCI_CLOCK
),PCI_66M
)
198 CFLAGS
:= $(CFLAGS
) -DPCI_66M
201 #########################################################################
203 export HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
204 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
205 export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
207 #########################################################################
209 # Allow boards to use custom optimize flags on a per dir/file basis
210 BCURDIR
:= $(notdir $(CURDIR
))
212 $(CPP
) $(AFLAGS
) $(AFLAGS_
$(@F
)) $(AFLAGS_
$(BCURDIR
)) -o
$@
$<
214 $(CC
) $(AFLAGS
) $(AFLAGS_
$(@F
)) $(AFLAGS_
$(BCURDIR
)) -o
$@
$< -c
216 $(CC
) $(CFLAGS
) $(CFLAGS_
$(@F
)) $(CFLAGS_
$(BCURDIR
)) -o
$@
$< -c
218 $(CPP
) $(CFLAGS
) $(CFLAGS_
$(@F
)) $(CFLAGS_
$(BCURDIR
)) -o
$@
$< -c
220 $(CC
) $(CFLAGS
) $(CFLAGS_
$(@F
)) $(CFLAGS_
$(BCURDIR
)) -o
$@
$< -c
-S
222 #########################################################################