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 CONFIG_SHELL
:= $(shell if
[ -x
"$$BASH" ]; then echo
$$BASH; \
50 else if
[ -x
/bin
/bash
]; then echo
/bin
/bash
; \
51 else echo sh
; fi
; fi
)
53 ifeq ($(HOSTOS
)-$(HOSTARCH
),darwin-ppc
)
58 HOSTCFLAGS
= -Wall
-Wstrict-prototypes
-O2
-fomit-frame-pointer
61 #########################################################################
63 # Option checker (courtesy linux kernel) to ensure
64 # only supported compiler options are used
66 cc-option
= $(shell if
$(CC
) $(CFLAGS
) $(1) -S
-o
/dev
/null
-xc
/dev
/null \
67 > /dev
/null
2>&1; then echo
"$(1)"; else echo
"$(2)"; fi
;)
70 # Include the make variables (CC, etc...)
72 AS
= $(CROSS_COMPILE
)as
73 LD
= $(CROSS_COMPILE
)ld
74 CC
= $(CROSS_COMPILE
)gcc
76 AR
= $(CROSS_COMPILE
)ar
77 NM
= $(CROSS_COMPILE
)nm
78 LDR
= $(CROSS_COMPILE
)ldr
79 STRIP
= $(CROSS_COMPILE
)strip
80 OBJCOPY
= $(CROSS_COMPILE
)objcopy
81 OBJDUMP
= $(CROSS_COMPILE
)objdump
82 RANLIB
= $(CROSS_COMPILE
)RANLIB
84 #########################################################################
86 # Load generated board configuration
87 sinclude
$(OBJTREE
)/include/autoconf.mk
90 sinclude
$(TOPDIR
)/$(ARCH
)_config.mk
# include architecture dependend rules
93 sinclude
$(TOPDIR
)/cpu
/$(CPU
)/config.mk
# include CPU specific rules
96 sinclude
$(TOPDIR
)/cpu
/$(CPU
)/$(SOC
)/config.mk
# include SoC specific rules
99 BOARDDIR
= $(VENDOR
)/$(BOARD
)
104 sinclude
$(TOPDIR
)/board
/$(BOARDDIR
)/config.mk
# include board specific rules
107 #########################################################################
109 ifneq (,$(findstring s
,$(MAKEFLAGS
)))
114 RELFLAGS
= $(PLATFORM_RELFLAGS
)
115 DBGFLAGS
= -g
# -DDEBUG
116 OPTFLAGS
= -Os
#-fomit-frame-pointer
118 #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
119 ifeq ($(CONFIG_NAND_U_BOOT
),y
)
120 LDSCRIPT
:= $(TOPDIR
)/board
/$(BOARDDIR
)/u-boot-nand.lds
122 LDSCRIPT
:= $(TOPDIR
)/board
/$(BOARDDIR
)/u-boot.lds
125 OBJCFLAGS
+= --gap-fill
=0xff
127 gccincdir
:= $(shell $(CC
) -print-file-name
=include)
129 CPPFLAGS
:= $(DBGFLAGS
) $(OPTFLAGS
) $(RELFLAGS
) \
131 ifneq ($(TEXT_BASE
),)
132 CPPFLAGS
+= -DTEXT_BASE
=$(TEXT_BASE
)
135 ifneq ($(OBJTREE
),$(SRCTREE
))
136 CPPFLAGS
+= -I
$(OBJTREE
)/include2
-I
$(OBJTREE
)/include
139 CPPFLAGS
+= -I
$(TOPDIR
)/include
140 CPPFLAGS
+= -fno-builtin
-ffreestanding
-nostdinc \
141 -isystem
$(gccincdir
) -pipe
$(PLATFORM_CPPFLAGS
)
144 CFLAGS
:= $(CPPFLAGS
) -Wall
-Wstrict-prototypes \
145 -DBUILD_TAG
='"$(BUILD_TAG)"'
147 CFLAGS
:= $(CPPFLAGS
) -Wall
-Wstrict-prototypes
150 CFLAGS
+= $(call cc-option
,-fno-stack-protector
)
152 # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
153 # this option have to be placed behind -Wall -- that's why it is here
155 ifeq ($(findstring 2.9,$(shell $(CC
) --version
)),2.9)
156 CFLAGS
:= $(CPPFLAGS
) -Wall
-Wno-trigraphs
160 # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
161 # option to the assembler.
164 # turn jbsr into jsr for m68k
166 ifeq ($(findstring 3.4,$(shell $(CC
) --version
)),3.4)
167 AFLAGS_DEBUG
:= -Wa
,-gstabs
,-S
171 AFLAGS
:= $(AFLAGS_DEBUG
) -D__ASSEMBLY__
$(CPPFLAGS
)
173 LDFLAGS
+= -Bstatic
-T
$(LDSCRIPT
) $(PLATFORM_LDFLAGS
)
174 ifneq ($(TEXT_BASE
),)
175 LDFLAGS
+= -Ttext
$(TEXT_BASE
)
178 # Location of a usable BFD library, where we define "usable" as
179 # "built for ${HOST}, supports ${TARGET}". Sensible values are
180 # - When cross-compiling: the root of the cross-environment
181 # - Linux/ppc (native): /usr
182 # - NetBSD/ppc (native): you lose ... (must extract these from the
183 # binutils build directory, plus the native and U-Boot include
184 # files don't like each other)
186 # So far, this is used only by tools/gdb/Makefile.
188 ifeq ($(HOSTOS
)-$(HOSTARCH
),darwin-ppc
)
189 BFD_ROOT_DIR
= /usr
/local
/tools
191 ifeq ($(HOSTARCH
),$(ARCH
))
195 #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
196 #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
197 BFD_ROOT_DIR
= /opt
/powerpc
201 ifeq ($(PCI_CLOCK
),PCI_66M
)
202 CFLAGS
:= $(CFLAGS
) -DPCI_66M
205 #########################################################################
207 export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
208 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
210 export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
212 #########################################################################
217 $(CPP
) $(AFLAGS
) -o
$@
$<
219 $(CC
) $(AFLAGS
) -c
-o
$@
$<
221 $(CC
) $(CFLAGS
) -c
-o
$@
$<
226 $(CPP
) $(AFLAGS
) -o
$@
$<
228 $(CC
) $(AFLAGS
) -c
-o
$@
$<
230 $(CC
) $(CFLAGS
) -c
-o
$@
$<
233 #########################################################################