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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 | |
844f07d8 | 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
e2211743 WD |
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 | ||
120ae609 BT |
26 | # Set shell to bash if possible, otherwise fall back to sh |
27 | SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
28 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
29 | else echo sh; fi; fi) | |
30 | ||
31 | export SHELL | |
32 | ||
f9328639 | 33 | ifeq ($(CURDIR),$(SRCTREE)) |
511d0c72 | 34 | dir := |
f9328639 MB |
35 | else |
36 | dir := $(subst $(SRCTREE)/,,$(CURDIR)) | |
37 | endif | |
38 | ||
c8f9c302 DS |
39 | ifneq ($(OBJTREE),$(SRCTREE)) |
40 | # Create object files for SPL in a separate directory | |
41 | ifeq ($(CONFIG_SPL_BUILD),y) | |
42 | obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) | |
43 | else | |
f9328639 | 44 | obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) |
c8f9c302 | 45 | endif |
f9328639 MB |
46 | src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) |
47 | ||
c8f9c302 DS |
48 | $(shell mkdir -p $(obj)) |
49 | else | |
50 | # Create object files for SPL in a separate directory | |
51 | ifeq ($(CONFIG_SPL_BUILD),y) | |
52 | obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) | |
53 | ||
f9328639 MB |
54 | $(shell mkdir -p $(obj)) |
55 | else | |
56 | obj := | |
c8f9c302 | 57 | endif |
f9328639 MB |
58 | src := |
59 | endif | |
60 | ||
592c5cab WD |
61 | # clean the slate ... |
62 | PLATFORM_RELFLAGS = | |
63 | PLATFORM_CPPFLAGS = | |
64 | PLATFORM_LDFLAGS = | |
65 | ||
e2211743 WD |
66 | ######################################################################### |
67 | ||
d984fed0 SW |
68 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ |
69 | $(HOSTCPPFLAGS) | |
70 | HOSTSTRIP = strip | |
71 | ||
72 | # | |
73 | # Mac OS X / Darwin's C preprocessor is Apple specific. It | |
74 | # generates numerous errors and warnings. We want to bypass it | |
844f07d8 | 75 | # and use GNU C's cpp. To do this we pass the -traditional-cpp |
d984fed0 SW |
76 | # option to the compiler. Note that the -traditional-cpp flag |
77 | # DOES NOT have the same semantics as GNU C's flag, all it does | |
78 | # is invoke the GNU preprocessor in stock ANSI/ISO C fashion. | |
79 | # | |
80 | # Apple's linker is similar, thanks to the new 2 stage linking | |
81 | # multiple symbol definitions are treated as errors, hence the | |
82 | # -multiply_defined suppress option to turn off this error. | |
83 | # | |
84 | ||
4cda4378 | 85 | ifeq ($(HOSTOS),darwin) |
c7da8c19 AB |
86 | # get major and minor product version (e.g. '10' and '6' for Snow Leopard) |
87 | DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.') | |
88 | DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.') | |
89 | ||
f534c7cd MF |
90 | os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ |
91 | $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) | |
c7da8c19 AB |
92 | |
93 | # Snow Leopards build environment has no longer restrictions as described above | |
f534c7cd MF |
94 | HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") |
95 | HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") | |
96 | HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") | |
e2211743 WD |
97 | else |
98 | HOSTCC = gcc | |
19c402af | 99 | HOSTLIBS += -lssl -lcrypto |
e2211743 | 100 | endif |
d984fed0 SW |
101 | |
102 | ifeq ($(HOSTOS),cygwin) | |
103 | HOSTCFLAGS += -ansi | |
104 | endif | |
105 | ||
106 | # We build some files with extra pedantic flags to try to minimize things | |
107 | # that won't build on some weird host compiler -- though there are lots of | |
108 | # exceptions for files that aren't complaint. | |
109 | ||
110 | HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) | |
111 | HOSTCFLAGS += -pedantic | |
e2211743 WD |
112 | |
113 | ######################################################################### | |
1820d4c7 | 114 | # |
19a695f8 | 115 | # Option checker, gcc version (courtesy linux kernel) to ensure |
1820d4c7 WD |
116 | # only supported compiler options are used |
117 | # | |
b6a467d7 | 118 | CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk |
6f4acc17 | 119 | CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o |
b6a467d7 DS |
120 | |
121 | -include $(CC_OPTIONS_CACHE_FILE) | |
122 | ||
6f4acc17 TR |
123 | cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \ |
124 | if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \ | |
b6a467d7 DS |
125 | > /dev/null 2>&1; then \ |
126 | echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \ | |
127 | echo "$(1)"; fi) | |
128 | ||
129 | ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y) | |
130 | cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2)) | |
131 | else | |
132 | cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\ | |
133 | $(if $(call cc-option-sys,$1),$1,$2))) | |
134 | endif | |
e2211743 | 135 | |
19a695f8 TR |
136 | # cc-version |
137 | # Usage gcc-ver := $(call cc-version) | |
138 | cc-version = $(shell $(SHELL) $(SRCTREE)/tools/gcc-version.sh $(CC)) | |
2051ff34 | 139 | binutils-version = $(shell $(SHELL) $(SRCTREE)/tools/binutils-version.sh $(AS)) |
19a695f8 | 140 | |
e2211743 WD |
141 | # |
142 | # Include the make variables (CC, etc...) | |
143 | # | |
144 | AS = $(CROSS_COMPILE)as | |
7cb714a5 KR |
145 | |
146 | # Always use GNU ld | |
147 | LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \ | |
148 | then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;) | |
149 | ||
e2211743 WD |
150 | CC = $(CROSS_COMPILE)gcc |
151 | CPP = $(CC) -E | |
152 | AR = $(CROSS_COMPILE)ar | |
153 | NM = $(CROSS_COMPILE)nm | |
94a91e24 | 154 | LDR = $(CROSS_COMPILE)ldr |
e2211743 WD |
155 | STRIP = $(CROSS_COMPILE)strip |
156 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
157 | OBJDUMP = $(CROSS_COMPILE)objdump | |
158 | RANLIB = $(CROSS_COMPILE)RANLIB | |
bbb0b128 | 159 | DTC = dtc |
4ab64933 | 160 | CHECK = sparse |
e2211743 | 161 | |
c4e5f52a WD |
162 | ######################################################################### |
163 | ||
164 | # Load generated board configuration | |
165 | sinclude $(OBJTREE)/include/autoconf.mk | |
5e987ddf | 166 | sinclude $(OBJTREE)/include/config.mk |
c4e5f52a | 167 | |
03b7004d PT |
168 | # Some architecture config.mk files need to know what CPUDIR is set to, |
169 | # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. | |
8d1f2682 PT |
170 | # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains |
171 | # CPU-specific code. | |
172 | CPUDIR=arch/$(ARCH)/cpu/$(CPU) | |
173 | ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR))) | |
174 | CPUDIR=arch/$(ARCH)/cpu | |
175 | endif | |
03b7004d | 176 | |
ea0364f1 | 177 | sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules |
03b7004d PT |
178 | sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules |
179 | ||
c4e5f52a | 180 | ifdef SOC |
03b7004d | 181 | sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules |
c4e5f52a WD |
182 | endif |
183 | ifdef VENDOR | |
184 | BOARDDIR = $(VENDOR)/$(BOARD) | |
185 | else | |
186 | BOARDDIR = $(BOARD) | |
187 | endif | |
188 | ifdef BOARD | |
189 | sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules | |
190 | endif | |
191 | ||
192 | ######################################################################### | |
193 | ||
5968adc4 MF |
194 | # We don't actually use $(ARFLAGS) anywhere anymore, so catch people |
195 | # who are porting old code to latest mainline but not updating $(AR). | |
196 | ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR) | |
e2211743 | 197 | RELFLAGS= $(PLATFORM_RELFLAGS) |
9acb626f | 198 | DBGFLAGS= -g # -DDEBUG |
e2211743 | 199 | OPTFLAGS= -Os #-fomit-frame-pointer |
83b7e2a7 | 200 | |
6dd652fa | 201 | OBJCFLAGS += --gap-fill=0xff |
e2211743 | 202 | |
b783edae WD |
203 | gccincdir := $(shell $(CC) -print-file-name=include) |
204 | ||
e2211743 | 205 | CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ |
c1f5805a | 206 | -D__KERNEL__ |
c8f9c302 DS |
207 | |
208 | # Enable garbage collection of un-used sections for SPL | |
209 | ifeq ($(CONFIG_SPL_BUILD),y) | |
210 | CPPFLAGS += -ffunction-sections -fdata-sections | |
211 | LDFLAGS_FINAL += --gc-sections | |
212 | endif | |
213 | ||
14d0a02a WD |
214 | ifneq ($(CONFIG_SYS_TEXT_BASE),) |
215 | CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) | |
161b2af4 | 216 | endif |
f9328639 | 217 | |
c8f9c302 DS |
218 | ifneq ($(CONFIG_SPL_TEXT_BASE),) |
219 | CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE) | |
220 | endif | |
221 | ||
94aebe6c SR |
222 | ifneq ($(CONFIG_SPL_PAD_TO),) |
223 | CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO) | |
224 | endif | |
225 | ||
ecddccd0 SR |
226 | ifneq ($(CONFIG_UBOOT_PAD_TO),) |
227 | CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO) | |
228 | endif | |
229 | ||
c8f9c302 DS |
230 | ifeq ($(CONFIG_SPL_BUILD),y) |
231 | CPPFLAGS += -DCONFIG_SPL_BUILD | |
232 | endif | |
233 | ||
5c1a7ea6 SG |
234 | # Does this architecture support generic board init? |
235 | ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) | |
236 | ifneq ($(CONFIG_SYS_GENERIC_BOARD),) | |
fada9e20 SG |
237 | CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \ |
238 | Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file) | |
5c1a7ea6 SG |
239 | endif |
240 | endif | |
241 | ||
6c97a20d KG |
242 | ifneq ($(RESET_VECTOR_ADDRESS),) |
243 | CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS) | |
244 | endif | |
245 | ||
f9328639 MB |
246 | ifneq ($(OBJTREE),$(SRCTREE)) |
247 | CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include | |
248 | endif | |
249 | ||
250 | CPPFLAGS += -I$(TOPDIR)/include | |
53677ef1 | 251 | CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ |
f9328639 | 252 | -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) |
e2211743 | 253 | |
e2211743 | 254 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes |
d642c467 MV |
255 | |
256 | ifdef BUILD_TAG | |
257 | CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' | |
e2211743 WD |
258 | endif |
259 | ||
cca4e4ae WD |
260 | CFLAGS_SSP := $(call cc-option,-fno-stack-protector) |
261 | CFLAGS += $(CFLAGS_SSP) | |
6262e4e7 MF |
262 | # Some toolchains enable security related warning flags by default, |
263 | # but they don't make much sense in the u-boot world, so disable them. | |
cca4e4ae WD |
264 | CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \ |
265 | $(call cc-option,-Wno-format-security) | |
266 | CFLAGS += $(CFLAGS_WARN) | |
28eab0d7 | 267 | |
4a30f1e8 TR |
268 | # Report stack usage if supported |
269 | CFLAGS_STACK := $(call cc-option,-fstack-usage) | |
270 | CFLAGS += $(CFLAGS_STACK) | |
271 | ||
5c2aeac5 SG |
272 | BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) |
273 | ||
274 | ifeq ($(findstring examples/,$(BCURDIR)),) | |
275 | ifeq ($(CONFIG_SPL_BUILD),) | |
276 | ifdef FTRACE | |
277 | CFLAGS += -finstrument-functions -DFTRACE | |
278 | endif | |
279 | endif | |
280 | endif | |
281 | ||
e11887a7 HS |
282 | # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> |
283 | # option to the assembler. | |
284 | AFLAGS_DEBUG := | |
b62fa913 | 285 | |
483a0cf8 MB |
286 | # turn jbsr into jsr for m68k |
287 | ifeq ($(ARCH),m68k) | |
288 | ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) | |
289 | AFLAGS_DEBUG := -Wa,-gstabs,-S | |
290 | endif | |
483a0cf8 | 291 | endif |
b62fa913 | 292 | |
e2211743 WD |
293 | AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) |
294 | ||
8aba9dce | 295 | LDFLAGS += $(PLATFORM_LDFLAGS) |
6dc1eceb | 296 | LDFLAGS_FINAL += -Bstatic |
8aba9dce | 297 | |
6dc1eceb | 298 | LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL) |
14d0a02a | 299 | ifneq ($(CONFIG_SYS_TEXT_BASE),) |
8aba9dce | 300 | LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) |
161b2af4 | 301 | endif |
e2211743 | 302 | |
c8f9c302 DS |
303 | LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) |
304 | ifneq ($(CONFIG_SPL_TEXT_BASE),) | |
305 | LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE) | |
306 | endif | |
307 | ||
4ab64933 KP |
308 | # Linus' kernel sanity checking tool |
309 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ | |
310 | -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) | |
311 | ||
e2211743 WD |
312 | # Location of a usable BFD library, where we define "usable" as |
313 | # "built for ${HOST}, supports ${TARGET}". Sensible values are | |
314 | # - When cross-compiling: the root of the cross-environment | |
315 | # - Linux/ppc (native): /usr | |
316 | # - NetBSD/ppc (native): you lose ... (must extract these from the | |
317 | # binutils build directory, plus the native and U-Boot include | |
318 | # files don't like each other) | |
319 | # | |
320 | # So far, this is used only by tools/gdb/Makefile. | |
321 | ||
4cda4378 | 322 | ifeq ($(HOSTOS),darwin) |
e2211743 WD |
323 | BFD_ROOT_DIR = /usr/local/tools |
324 | else | |
ea909b76 WD |
325 | ifeq ($(HOSTARCH),$(ARCH)) |
326 | # native | |
327 | BFD_ROOT_DIR = /usr | |
328 | else | |
e2211743 WD |
329 | #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 |
330 | #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 | |
e2211743 WD |
331 | BFD_ROOT_DIR = /opt/powerpc |
332 | endif | |
ea909b76 | 333 | endif |
e2211743 WD |
334 | |
335 | ######################################################################### | |
336 | ||
d984fed0 | 337 | export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ |
434c51a5 | 338 | AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE |
14d0a02a | 339 | export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS |
e2211743 WD |
340 | |
341 | ######################################################################### | |
342 | ||
5ec5529b | 343 | # Allow boards to use custom optimize flags on a per dir/file basis |
326a6945 MF |
344 | ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) |
345 | ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) | |
47508843 SG |
346 | EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR)) |
347 | ALL_CFLAGS += $(EXTRA_CPPFLAGS) | |
348 | ||
349 | # The _DEP version uses the $< file target (for dependency generation) | |
350 | # See rules.mk | |
351 | EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \ | |
352 | $(CPPFLAGS_$(BCURDIR)) | |
f9328639 | 353 | $(obj)%.s: %.S |
326a6945 | 354 | $(CPP) $(ALL_AFLAGS) -o $@ $< |
f9328639 | 355 | $(obj)%.o: %.S |
326a6945 | 356 | $(CC) $(ALL_AFLAGS) -o $@ $< -c |
f9328639 | 357 | $(obj)%.o: %.c |
4ab64933 KP |
358 | ifneq ($(CHECKSRC),0) |
359 | $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $< | |
360 | endif | |
326a6945 | 361 | $(CC) $(ALL_CFLAGS) -o $@ $< -c |
31f30c9e | 362 | $(obj)%.i: %.c |
326a6945 | 363 | $(CPP) $(ALL_CFLAGS) -o $@ $< -c |
31f30c9e | 364 | $(obj)%.s: %.c |
326a6945 | 365 | $(CC) $(ALL_CFLAGS) -o $@ $< -c -S |
f9328639 | 366 | |
e2211743 | 367 | ######################################################################### |
6d8962e8 SC |
368 | |
369 | # If the list of objects to link is empty, just create an empty built-in.o | |
370 | cmd_link_o_target = $(if $(strip $1),\ | |
8aba9dce | 371 | $(LD) $(LDFLAGS) -r -o $@ $1,\ |
844f07d8 | 372 | rm -f $@; $(AR) rcs $@ ) |
6d8962e8 SC |
373 | |
374 | ######################################################################### |