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Commit | Line | Data |
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e2211743 | 1 | # |
eca3aeb3 | 2 | # (C) Copyright 2000-2013 |
e2211743 WD |
3 | # Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
4 | # | |
eca3aeb3 | 5 | # SPDX-License-Identifier: GPL-2.0+ |
e2211743 | 6 | # |
e2211743 WD |
7 | ######################################################################### |
8 | ||
120ae609 BT |
9 | # Set shell to bash if possible, otherwise fall back to sh |
10 | SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
11 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
12 | else echo sh; fi; fi) | |
13 | ||
14 | export SHELL | |
15 | ||
f9328639 | 16 | ifeq ($(CURDIR),$(SRCTREE)) |
511d0c72 | 17 | dir := |
f9328639 MB |
18 | else |
19 | dir := $(subst $(SRCTREE)/,,$(CURDIR)) | |
20 | endif | |
21 | ||
c8f9c302 DS |
22 | ifneq ($(OBJTREE),$(SRCTREE)) |
23 | # Create object files for SPL in a separate directory | |
24 | ifeq ($(CONFIG_SPL_BUILD),y) | |
3aa29de0 YZ |
25 | ifeq ($(CONFIG_TPL_BUILD),y) |
26 | obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) | |
27 | else | |
c8f9c302 | 28 | obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) |
3aa29de0 | 29 | endif |
c8f9c302 | 30 | else |
f9328639 | 31 | obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) |
c8f9c302 | 32 | endif |
f9328639 MB |
33 | src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) |
34 | ||
c8f9c302 DS |
35 | $(shell mkdir -p $(obj)) |
36 | else | |
37 | # Create object files for SPL in a separate directory | |
38 | ifeq ($(CONFIG_SPL_BUILD),y) | |
3aa29de0 YZ |
39 | ifeq ($(CONFIG_TPL_BUILD),y) |
40 | obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) | |
41 | else | |
c8f9c302 DS |
42 | obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) |
43 | ||
3aa29de0 | 44 | endif |
f9328639 MB |
45 | $(shell mkdir -p $(obj)) |
46 | else | |
47 | obj := | |
c8f9c302 | 48 | endif |
f9328639 MB |
49 | src := |
50 | endif | |
51 | ||
592c5cab WD |
52 | # clean the slate ... |
53 | PLATFORM_RELFLAGS = | |
54 | PLATFORM_CPPFLAGS = | |
55 | PLATFORM_LDFLAGS = | |
56 | ||
e2211743 WD |
57 | ######################################################################### |
58 | ||
d984fed0 SW |
59 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ |
60 | $(HOSTCPPFLAGS) | |
61 | HOSTSTRIP = strip | |
62 | ||
63 | # | |
64 | # Mac OS X / Darwin's C preprocessor is Apple specific. It | |
65 | # generates numerous errors and warnings. We want to bypass it | |
844f07d8 | 66 | # and use GNU C's cpp. To do this we pass the -traditional-cpp |
d984fed0 SW |
67 | # option to the compiler. Note that the -traditional-cpp flag |
68 | # DOES NOT have the same semantics as GNU C's flag, all it does | |
69 | # is invoke the GNU preprocessor in stock ANSI/ISO C fashion. | |
70 | # | |
71 | # Apple's linker is similar, thanks to the new 2 stage linking | |
72 | # multiple symbol definitions are treated as errors, hence the | |
73 | # -multiply_defined suppress option to turn off this error. | |
74 | # | |
75 | ||
4cda4378 | 76 | ifeq ($(HOSTOS),darwin) |
c7da8c19 AB |
77 | # get major and minor product version (e.g. '10' and '6' for Snow Leopard) |
78 | DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.') | |
79 | DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.') | |
80 | ||
f534c7cd MF |
81 | os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ |
82 | $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) | |
c7da8c19 AB |
83 | |
84 | # Snow Leopards build environment has no longer restrictions as described above | |
f534c7cd MF |
85 | HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") |
86 | HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") | |
87 | HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") | |
e2211743 WD |
88 | else |
89 | HOSTCC = gcc | |
90 | endif | |
d984fed0 SW |
91 | |
92 | ifeq ($(HOSTOS),cygwin) | |
93 | HOSTCFLAGS += -ansi | |
94 | endif | |
95 | ||
96 | # We build some files with extra pedantic flags to try to minimize things | |
97 | # that won't build on some weird host compiler -- though there are lots of | |
98 | # exceptions for files that aren't complaint. | |
99 | ||
100 | HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) | |
101 | HOSTCFLAGS += -pedantic | |
e2211743 WD |
102 | |
103 | ######################################################################### | |
1820d4c7 | 104 | # |
19a695f8 | 105 | # Option checker, gcc version (courtesy linux kernel) to ensure |
1820d4c7 WD |
106 | # only supported compiler options are used |
107 | # | |
b6a467d7 | 108 | CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk |
6f4acc17 | 109 | CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o |
b6a467d7 DS |
110 | |
111 | -include $(CC_OPTIONS_CACHE_FILE) | |
112 | ||
6f4acc17 TR |
113 | cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \ |
114 | if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \ | |
b6a467d7 DS |
115 | > /dev/null 2>&1; then \ |
116 | echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \ | |
117 | echo "$(1)"; fi) | |
118 | ||
119 | ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y) | |
120 | cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2)) | |
121 | else | |
122 | cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\ | |
123 | $(if $(call cc-option-sys,$1),$1,$2))) | |
124 | endif | |
e2211743 | 125 | |
19a695f8 TR |
126 | # cc-version |
127 | # Usage gcc-ver := $(call cc-version) | |
dd88ab32 MY |
128 | cc-version = $(shell $(SHELL) $(SRCTREE)/scripts/gcc-version.sh $(CC)) |
129 | binutils-version = $(shell $(SHELL) $(SRCTREE)/scripts/binutils-version.sh $(AS)) | |
130 | dtc-version = $(shell $(SHELL) $(SRCTREE)/scripts/dtc-version.sh $(DTC)) | |
19a695f8 | 131 | |
e2211743 WD |
132 | # |
133 | # Include the make variables (CC, etc...) | |
134 | # | |
135 | AS = $(CROSS_COMPILE)as | |
7cb714a5 KR |
136 | |
137 | # Always use GNU ld | |
138 | LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \ | |
139 | then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;) | |
140 | ||
e2211743 WD |
141 | CC = $(CROSS_COMPILE)gcc |
142 | CPP = $(CC) -E | |
143 | AR = $(CROSS_COMPILE)ar | |
144 | NM = $(CROSS_COMPILE)nm | |
94a91e24 | 145 | LDR = $(CROSS_COMPILE)ldr |
e2211743 WD |
146 | STRIP = $(CROSS_COMPILE)strip |
147 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
148 | OBJDUMP = $(CROSS_COMPILE)objdump | |
149 | RANLIB = $(CROSS_COMPILE)RANLIB | |
bbb0b128 | 150 | DTC = dtc |
4ab64933 | 151 | CHECK = sparse |
e2211743 | 152 | |
c4e5f52a WD |
153 | ######################################################################### |
154 | ||
155 | # Load generated board configuration | |
3aa29de0 YZ |
156 | ifeq ($(CONFIG_TPL_BUILD),y) |
157 | # Include TPL autoconf | |
158 | sinclude $(OBJTREE)/include/tpl-autoconf.mk | |
159 | else | |
39bc12dd JF |
160 | ifeq ($(CONFIG_SPL_BUILD),y) |
161 | # Include SPL autoconf | |
162 | sinclude $(OBJTREE)/include/spl-autoconf.mk | |
163 | else | |
164 | # Include normal autoconf | |
c4e5f52a | 165 | sinclude $(OBJTREE)/include/autoconf.mk |
39bc12dd | 166 | endif |
3aa29de0 | 167 | endif |
5e987ddf | 168 | sinclude $(OBJTREE)/include/config.mk |
c4e5f52a | 169 | |
03b7004d PT |
170 | # Some architecture config.mk files need to know what CPUDIR is set to, |
171 | # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. | |
8d1f2682 PT |
172 | # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains |
173 | # CPU-specific code. | |
174 | CPUDIR=arch/$(ARCH)/cpu/$(CPU) | |
175 | ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR))) | |
176 | CPUDIR=arch/$(ARCH)/cpu | |
177 | endif | |
03b7004d | 178 | |
ea0364f1 | 179 | sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules |
03b7004d PT |
180 | sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules |
181 | ||
c4e5f52a | 182 | ifdef SOC |
03b7004d | 183 | sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules |
c4e5f52a WD |
184 | endif |
185 | ifdef VENDOR | |
186 | BOARDDIR = $(VENDOR)/$(BOARD) | |
187 | else | |
188 | BOARDDIR = $(BOARD) | |
189 | endif | |
190 | ifdef BOARD | |
191 | sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules | |
192 | endif | |
193 | ||
194 | ######################################################################### | |
195 | ||
5968adc4 MF |
196 | # We don't actually use $(ARFLAGS) anywhere anymore, so catch people |
197 | # who are porting old code to latest mainline but not updating $(AR). | |
198 | ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR) | |
e2211743 | 199 | RELFLAGS= $(PLATFORM_RELFLAGS) |
9acb626f | 200 | DBGFLAGS= -g # -DDEBUG |
e2211743 | 201 | OPTFLAGS= -Os #-fomit-frame-pointer |
83b7e2a7 | 202 | |
6dd652fa | 203 | OBJCFLAGS += --gap-fill=0xff |
e2211743 | 204 | |
b783edae WD |
205 | gccincdir := $(shell $(CC) -print-file-name=include) |
206 | ||
e2211743 | 207 | CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ |
c1f5805a | 208 | -D__KERNEL__ |
c8f9c302 DS |
209 | |
210 | # Enable garbage collection of un-used sections for SPL | |
211 | ifeq ($(CONFIG_SPL_BUILD),y) | |
212 | CPPFLAGS += -ffunction-sections -fdata-sections | |
213 | LDFLAGS_FINAL += --gc-sections | |
214 | endif | |
215 | ||
29ce737d | 216 | # TODO(sjg@chromium.org): Is this correct on Mac OS? |
bce88370 MV |
217 | |
218 | # MXSImage needs LibSSL | |
219 | ifneq ($(CONFIG_MX23)$(CONFIG_MX28),) | |
220 | HOSTLIBS += -lssl -lcrypto | |
221 | # Add CONFIG_MXS into host CFLAGS, so we can check whether or not register | |
222 | # the mxsimage support within tools/mxsimage.c . | |
223 | HOSTCFLAGS += -DCONFIG_MXS | |
224 | endif | |
225 | ||
29ce737d SG |
226 | ifdef CONFIG_FIT_SIGNATURE |
227 | HOSTLIBS += -lssl -lcrypto | |
971c450a SG |
228 | |
229 | # This affects include/image.h, but including the board config file | |
230 | # is tricky, so manually define this options here. | |
231 | HOSTCFLAGS += -DCONFIG_FIT_SIGNATURE | |
29ce737d SG |
232 | endif |
233 | ||
14d0a02a WD |
234 | ifneq ($(CONFIG_SYS_TEXT_BASE),) |
235 | CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) | |
161b2af4 | 236 | endif |
f9328639 | 237 | |
c8f9c302 DS |
238 | ifeq ($(CONFIG_SPL_BUILD),y) |
239 | CPPFLAGS += -DCONFIG_SPL_BUILD | |
3aa29de0 YZ |
240 | ifeq ($(CONFIG_TPL_BUILD),y) |
241 | CPPFLAGS += -DCONFIG_TPL_BUILD | |
242 | endif | |
c8f9c302 DS |
243 | endif |
244 | ||
5c1a7ea6 SG |
245 | # Does this architecture support generic board init? |
246 | ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) | |
247 | ifneq ($(CONFIG_SYS_GENERIC_BOARD),) | |
fada9e20 SG |
248 | CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \ |
249 | Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file) | |
5c1a7ea6 SG |
250 | endif |
251 | endif | |
252 | ||
f9328639 | 253 | ifneq ($(OBJTREE),$(SRCTREE)) |
3d83efbc | 254 | CPPFLAGS += -I$(OBJTREE)/include |
f9328639 MB |
255 | endif |
256 | ||
3d83efbc | 257 | CPPFLAGS += -I$(TOPDIR)/include -I$(SRCTREE)/arch/$(ARCH)/include |
53677ef1 | 258 | CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ |
f9328639 | 259 | -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) |
e2211743 | 260 | |
e2211743 | 261 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes |
d642c467 MV |
262 | |
263 | ifdef BUILD_TAG | |
264 | CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' | |
e2211743 WD |
265 | endif |
266 | ||
cca4e4ae WD |
267 | CFLAGS_SSP := $(call cc-option,-fno-stack-protector) |
268 | CFLAGS += $(CFLAGS_SSP) | |
6262e4e7 MF |
269 | # Some toolchains enable security related warning flags by default, |
270 | # but they don't make much sense in the u-boot world, so disable them. | |
cca4e4ae WD |
271 | CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \ |
272 | $(call cc-option,-Wno-format-security) | |
273 | CFLAGS += $(CFLAGS_WARN) | |
28eab0d7 | 274 | |
4a30f1e8 TR |
275 | # Report stack usage if supported |
276 | CFLAGS_STACK := $(call cc-option,-fstack-usage) | |
277 | CFLAGS += $(CFLAGS_STACK) | |
278 | ||
5c2aeac5 SG |
279 | BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) |
280 | ||
281 | ifeq ($(findstring examples/,$(BCURDIR)),) | |
282 | ifeq ($(CONFIG_SPL_BUILD),) | |
283 | ifdef FTRACE | |
284 | CFLAGS += -finstrument-functions -DFTRACE | |
285 | endif | |
286 | endif | |
287 | endif | |
288 | ||
e11887a7 HS |
289 | # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> |
290 | # option to the assembler. | |
291 | AFLAGS_DEBUG := | |
b62fa913 | 292 | |
483a0cf8 MB |
293 | # turn jbsr into jsr for m68k |
294 | ifeq ($(ARCH),m68k) | |
295 | ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) | |
296 | AFLAGS_DEBUG := -Wa,-gstabs,-S | |
297 | endif | |
483a0cf8 | 298 | endif |
b62fa913 | 299 | |
e2211743 WD |
300 | AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) |
301 | ||
8aba9dce | 302 | LDFLAGS += $(PLATFORM_LDFLAGS) |
6dc1eceb | 303 | LDFLAGS_FINAL += -Bstatic |
8aba9dce | 304 | |
6dc1eceb | 305 | LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL) |
14d0a02a | 306 | ifneq ($(CONFIG_SYS_TEXT_BASE),) |
8aba9dce | 307 | LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) |
161b2af4 | 308 | endif |
e2211743 | 309 | |
3aa29de0 | 310 | LDFLAGS_$(SPL_BIN) += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) |
c8f9c302 | 311 | ifneq ($(CONFIG_SPL_TEXT_BASE),) |
3aa29de0 | 312 | LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) |
c8f9c302 DS |
313 | endif |
314 | ||
4ab64933 KP |
315 | # Linus' kernel sanity checking tool |
316 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ | |
93e14596 | 317 | -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) |
4ab64933 | 318 | |
e2211743 WD |
319 | # Location of a usable BFD library, where we define "usable" as |
320 | # "built for ${HOST}, supports ${TARGET}". Sensible values are | |
321 | # - When cross-compiling: the root of the cross-environment | |
322 | # - Linux/ppc (native): /usr | |
323 | # - NetBSD/ppc (native): you lose ... (must extract these from the | |
324 | # binutils build directory, plus the native and U-Boot include | |
325 | # files don't like each other) | |
326 | # | |
327 | # So far, this is used only by tools/gdb/Makefile. | |
328 | ||
4cda4378 | 329 | ifeq ($(HOSTOS),darwin) |
e2211743 WD |
330 | BFD_ROOT_DIR = /usr/local/tools |
331 | else | |
ea909b76 WD |
332 | ifeq ($(HOSTARCH),$(ARCH)) |
333 | # native | |
334 | BFD_ROOT_DIR = /usr | |
335 | else | |
e2211743 WD |
336 | #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 |
337 | #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 | |
e2211743 WD |
338 | BFD_ROOT_DIR = /opt/powerpc |
339 | endif | |
ea909b76 | 340 | endif |
e2211743 WD |
341 | |
342 | ######################################################################### | |
343 | ||
d984fed0 | 344 | export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ |
434c51a5 | 345 | AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE |
14d0a02a | 346 | export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS |
e2211743 WD |
347 | |
348 | ######################################################################### | |
349 | ||
5ec5529b | 350 | # Allow boards to use custom optimize flags on a per dir/file basis |
326a6945 MF |
351 | ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) |
352 | ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) | |
47508843 SG |
353 | EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR)) |
354 | ALL_CFLAGS += $(EXTRA_CPPFLAGS) | |
355 | ||
356 | # The _DEP version uses the $< file target (for dependency generation) | |
357 | # See rules.mk | |
358 | EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \ | |
359 | $(CPPFLAGS_$(BCURDIR)) | |
f9328639 | 360 | $(obj)%.s: %.S |
326a6945 | 361 | $(CPP) $(ALL_AFLAGS) -o $@ $< |
f9328639 | 362 | $(obj)%.o: %.S |
326a6945 | 363 | $(CC) $(ALL_AFLAGS) -o $@ $< -c |
f9328639 | 364 | $(obj)%.o: %.c |
4ab64933 KP |
365 | ifneq ($(CHECKSRC),0) |
366 | $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $< | |
367 | endif | |
326a6945 | 368 | $(CC) $(ALL_CFLAGS) -o $@ $< -c |
31f30c9e | 369 | $(obj)%.i: %.c |
326a6945 | 370 | $(CPP) $(ALL_CFLAGS) -o $@ $< -c |
31f30c9e | 371 | $(obj)%.s: %.c |
326a6945 | 372 | $(CC) $(ALL_CFLAGS) -o $@ $< -c -S |
f9328639 | 373 | |
e2211743 | 374 | ######################################################################### |
6d8962e8 SC |
375 | |
376 | # If the list of objects to link is empty, just create an empty built-in.o | |
377 | cmd_link_o_target = $(if $(strip $1),\ | |
8aba9dce | 378 | $(LD) $(LDFLAGS) -r -o $@ $1,\ |
844f07d8 | 379 | rm -f $@; $(AR) rcs $@ ) |
6d8962e8 SC |
380 | |
381 | ######################################################################### |