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Commit | Line | Data |
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e2211743 | 1 | # |
f9328639 | 2 | # (C) Copyright 2000-2006 |
e2211743 WD |
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 | ||
f9328639 MB |
26 | ifneq ($(OBJTREE),$(SRCTREE)) |
27 | ifeq ($(CURDIR),$(SRCTREE)) | |
511d0c72 | 28 | dir := |
f9328639 MB |
29 | else |
30 | dir := $(subst $(SRCTREE)/,,$(CURDIR)) | |
31 | endif | |
32 | ||
33 | obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) | |
34 | src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) | |
35 | ||
36 | $(shell mkdir -p $(obj)) | |
37 | else | |
38 | obj := | |
39 | src := | |
40 | endif | |
41 | ||
592c5cab WD |
42 | # clean the slate ... |
43 | PLATFORM_RELFLAGS = | |
44 | PLATFORM_CPPFLAGS = | |
45 | PLATFORM_LDFLAGS = | |
46 | ||
e2211743 WD |
47 | ######################################################################### |
48 | ||
d984fed0 SW |
49 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ |
50 | $(HOSTCPPFLAGS) | |
51 | HOSTSTRIP = strip | |
52 | ||
53 | # | |
54 | # Mac OS X / Darwin's C preprocessor is Apple specific. It | |
55 | # generates numerous errors and warnings. We want to bypass it | |
56 | # and use GNU C's cpp. To do this we pass the -traditional-cpp | |
57 | # option to the compiler. Note that the -traditional-cpp flag | |
58 | # DOES NOT have the same semantics as GNU C's flag, all it does | |
59 | # is invoke the GNU preprocessor in stock ANSI/ISO C fashion. | |
60 | # | |
61 | # Apple's linker is similar, thanks to the new 2 stage linking | |
62 | # multiple symbol definitions are treated as errors, hence the | |
63 | # -multiply_defined suppress option to turn off this error. | |
64 | # | |
65 | ||
4cda4378 | 66 | ifeq ($(HOSTOS),darwin) |
e2211743 | 67 | HOSTCC = cc |
d984fed0 SW |
68 | HOSTCFLAGS += -traditional-cpp |
69 | HOSTLDFLAGS += -multiply_defined suppress | |
e2211743 WD |
70 | else |
71 | HOSTCC = gcc | |
72 | endif | |
d984fed0 SW |
73 | |
74 | ifeq ($(HOSTOS),cygwin) | |
75 | HOSTCFLAGS += -ansi | |
76 | endif | |
77 | ||
78 | # We build some files with extra pedantic flags to try to minimize things | |
79 | # that won't build on some weird host compiler -- though there are lots of | |
80 | # exceptions for files that aren't complaint. | |
81 | ||
82 | HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) | |
83 | HOSTCFLAGS += -pedantic | |
e2211743 WD |
84 | |
85 | ######################################################################### | |
1820d4c7 WD |
86 | # |
87 | # Option checker (courtesy linux kernel) to ensure | |
88 | # only supported compiler options are used | |
89 | # | |
90 | cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ | |
9b880bd4 | 91 | > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) |
e2211743 WD |
92 | |
93 | # | |
94 | # Include the make variables (CC, etc...) | |
95 | # | |
96 | AS = $(CROSS_COMPILE)as | |
97 | LD = $(CROSS_COMPILE)ld | |
98 | CC = $(CROSS_COMPILE)gcc | |
99 | CPP = $(CC) -E | |
100 | AR = $(CROSS_COMPILE)ar | |
101 | NM = $(CROSS_COMPILE)nm | |
94a91e24 | 102 | LDR = $(CROSS_COMPILE)ldr |
e2211743 WD |
103 | STRIP = $(CROSS_COMPILE)strip |
104 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
105 | OBJDUMP = $(CROSS_COMPILE)objdump | |
106 | RANLIB = $(CROSS_COMPILE)RANLIB | |
107 | ||
c4e5f52a WD |
108 | ######################################################################### |
109 | ||
110 | # Load generated board configuration | |
111 | sinclude $(OBJTREE)/include/autoconf.mk | |
112 | ||
113 | ifdef ARCH | |
b220c64d | 114 | sinclude $(TOPDIR)/lib_$(ARCH)/config.mk # include architecture dependend rules |
c4e5f52a WD |
115 | endif |
116 | ifdef CPU | |
f772acf8 | 117 | sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules |
c4e5f52a WD |
118 | endif |
119 | ifdef SOC | |
120 | sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules | |
121 | endif | |
122 | ifdef VENDOR | |
123 | BOARDDIR = $(VENDOR)/$(BOARD) | |
124 | else | |
125 | BOARDDIR = $(BOARD) | |
126 | endif | |
127 | ifdef BOARD | |
128 | sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules | |
129 | endif | |
130 | ||
131 | ######################################################################### | |
132 | ||
1954be6e WD |
133 | ifneq (,$(findstring s,$(MAKEFLAGS))) |
134 | ARFLAGS = cr | |
135 | else | |
2b208f53 | 136 | ARFLAGS = crv |
1954be6e | 137 | endif |
e2211743 | 138 | RELFLAGS= $(PLATFORM_RELFLAGS) |
9acb626f | 139 | DBGFLAGS= -g # -DDEBUG |
e2211743 | 140 | OPTFLAGS= -Os #-fomit-frame-pointer |
6dd652fa | 141 | ifndef LDSCRIPT |
4aeb251f | 142 | #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug |
887e2ec9 SR |
143 | ifeq ($(CONFIG_NAND_U_BOOT),y) |
144 | LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds | |
145 | else | |
e2211743 | 146 | LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds |
6dd652fa | 147 | endif |
887e2ec9 | 148 | endif |
6dd652fa | 149 | OBJCFLAGS += --gap-fill=0xff |
e2211743 | 150 | |
b783edae WD |
151 | gccincdir := $(shell $(CC) -print-file-name=include) |
152 | ||
e2211743 | 153 | CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ |
161b2af4 MF |
154 | -D__KERNEL__ |
155 | ifneq ($(TEXT_BASE),) | |
156 | CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) | |
157 | endif | |
f9328639 | 158 | |
6c97a20d KG |
159 | ifneq ($(RESET_VECTOR_ADDRESS),) |
160 | CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS) | |
161 | endif | |
162 | ||
f9328639 MB |
163 | ifneq ($(OBJTREE),$(SRCTREE)) |
164 | CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include | |
165 | endif | |
166 | ||
167 | CPPFLAGS += -I$(TOPDIR)/include | |
53677ef1 | 168 | CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ |
f9328639 | 169 | -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) |
e2211743 WD |
170 | |
171 | ifdef BUILD_TAG | |
172 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ | |
173 | -DBUILD_TAG='"$(BUILD_TAG)"' | |
174 | else | |
175 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes | |
176 | endif | |
177 | ||
28eab0d7 HS |
178 | CFLAGS += $(call cc-option,-fno-stack-protector) |
179 | ||
c40b2956 WD |
180 | # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9) |
181 | # this option have to be placed behind -Wall -- that's why it is here | |
182 | ifeq ($(ARCH),nios) | |
183 | ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9) | |
e4cc71aa | 184 | CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs |
c40b2956 WD |
185 | endif |
186 | endif | |
187 | ||
e11887a7 HS |
188 | # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> |
189 | # option to the assembler. | |
190 | AFLAGS_DEBUG := | |
b62fa913 | 191 | |
483a0cf8 MB |
192 | # turn jbsr into jsr for m68k |
193 | ifeq ($(ARCH),m68k) | |
194 | ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) | |
195 | AFLAGS_DEBUG := -Wa,-gstabs,-S | |
196 | endif | |
483a0cf8 | 197 | endif |
b62fa913 | 198 | |
e2211743 WD |
199 | AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) |
200 | ||
1aada9cd | 201 | LDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS) |
161b2af4 MF |
202 | ifneq ($(TEXT_BASE),) |
203 | LDFLAGS += -Ttext $(TEXT_BASE) | |
204 | endif | |
e2211743 WD |
205 | |
206 | # Location of a usable BFD library, where we define "usable" as | |
207 | # "built for ${HOST}, supports ${TARGET}". Sensible values are | |
208 | # - When cross-compiling: the root of the cross-environment | |
209 | # - Linux/ppc (native): /usr | |
210 | # - NetBSD/ppc (native): you lose ... (must extract these from the | |
211 | # binutils build directory, plus the native and U-Boot include | |
212 | # files don't like each other) | |
213 | # | |
214 | # So far, this is used only by tools/gdb/Makefile. | |
215 | ||
4cda4378 | 216 | ifeq ($(HOSTOS),darwin) |
e2211743 WD |
217 | BFD_ROOT_DIR = /usr/local/tools |
218 | else | |
ea909b76 WD |
219 | ifeq ($(HOSTARCH),$(ARCH)) |
220 | # native | |
221 | BFD_ROOT_DIR = /usr | |
222 | else | |
e2211743 WD |
223 | #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 |
224 | #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 | |
e2211743 WD |
225 | BFD_ROOT_DIR = /opt/powerpc |
226 | endif | |
ea909b76 | 227 | endif |
e2211743 WD |
228 | |
229 | ######################################################################### | |
230 | ||
d984fed0 | 231 | export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ |
434c51a5 | 232 | AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE |
e2211743 WD |
233 | export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS |
234 | ||
235 | ######################################################################### | |
236 | ||
5ec5529b MF |
237 | # Allow boards to use custom optimize flags on a per dir/file basis |
238 | BCURDIR := $(notdir $(CURDIR)) | |
f9328639 | 239 | $(obj)%.s: %.S |
5ec5529b | 240 | $(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< |
f9328639 | 241 | $(obj)%.o: %.S |
5ec5529b | 242 | $(CC) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c |
f9328639 | 243 | $(obj)%.o: %.c |
5ec5529b | 244 | $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c |
31f30c9e MF |
245 | $(obj)%.i: %.c |
246 | $(CPP) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c | |
247 | $(obj)%.s: %.c | |
248 | $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c -S | |
f9328639 | 249 | |
e2211743 | 250 | ######################################################################### |