1 # SPDX-License-Identifier: GPL-2.0-only
4 ifeq ($(CONFIG_CCACHE),y)
6 CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
8 $(error ccache selected, but not found in PATH)
11 export CCACHE_COMPILERCHECK=mtime
12 export CCACHE_BASEDIR=$(top)
13 export CCACHE_STATSLOG=$(obj)/ccache.stats
15 $(foreach arch,$(ARCH_SUPPORTED), \
16 $(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))
18 HOSTCC:=$(CCACHE) $(HOSTCC)
19 HOSTCXX:=$(CCACHE) $(HOSTCXX)
22 # scan-build integration
23 ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
25 ifeq ($(CCC_ANALYZER_ANALYSIS),)
26 export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
29 $(foreach arch,$(ARCH_SUPPORTED), \
30 $(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))
32 HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
33 HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
36 # include-what-you-use integration
37 ifeq ($(CONFIG_IWYU),y)
39 IWYU:=$(word 1,$(wildcard $(addsuffix /iwyu,$(subst :, ,$(PATH)))))
41 $(error include-what-you-use selected, but not found in PATH)
44 $(foreach arch,$(ARCH_SUPPORTED), \
45 $(eval CC_$(arch):=$(IWYU) ))
47 CFLAGS_common := -Xiwyu --prefix_header_includes=remove -Xiwyu --no_comments -Xiwyu --no_fwd_decls $(CFLAGS_common)
51 COREBOOT_STANDARD_STAGES := decompressor bootblock verstage romstage ramstage
52 MAP-decompressor := bootblock
58 ARCHDIR-arm64 := arm64
59 ARCHDIR-riscv := riscv
60 ARCHDIR-ppc64 := ppc64
63 CFLAGS_arm64 += -mgeneral-regs-only
66 CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
70 GCC_ADAFLAGS_arm64 += -mgeneral-regs-only
72 GCC_ADAFLAGS_x86_32 +=
73 GCC_ADAFLAGS_x86_64 += -mcmodel=large -mno-red-zone
76 # Some boards only provide 2K stacks, so storing lots of data there leads to
77 # problems. Since C rules don't allow us to statically determine the maximum
78 # stack use, we use 1.5K as heuristic, assuming that we typically have lots
79 # of tiny stack frames and the odd large one.
81 # Store larger buffers in BSS, use static to share data in cache-as-ram
83 # Since GCCs detection of dynamic array bounds unfortunately seems to be
84 # very basic, you'll sometimes have to use a static upper bound for the
85 # size and an assert() to make sure it's honored (see gpio_base3_value()
87 # (If you absolutely need a larger stack frame and are 100% sure it cannot
88 # cause problems, you can whitelist it with #pragma diagnostic.)
89 ifeq ($(CONFIG_COMPILER_GCC),y)
90 CFLAGS_arm += -Wstack-usage=1536
91 CFLAGS_arm64 += -Wstack-usage=1536
92 CFLAGS_riscv += -Wstack-usage=1536
93 CFLAGS_ppc64 += -Wstack-usage=1536
97 $(foreach arch,$(ARCH_SUPPORTED),\
98 $(eval CPPFLAGS_$(arch) += \
99 -Isrc/arch/$(ARCHDIR-$(arch))/include))
101 # set_stage_toolchain: Decides the toolchain to be used by every stage
102 # E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
103 # ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
104 # decide the compiler toolchain for bootblock stage
105 # This step is essential for initializing the toolchain for coreboot standard
106 # stages i.e. bootblock, romstage and ramstage, since it acts as the second
107 # parameter to create_class_compiler below in init_standard_toolchain
108 map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
109 set_stage_toolchain= \
110 $(foreach arch,$(ARCH_SUPPORTED), \
111 $(eval ARCH-$(1)-$($(shell \
112 echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | \
113 tr '[:lower:]' '[:upper:]')) := $(arch)))
115 # standard-archs: Tell which architectures are used by the standard stages.
116 standard-archs = $(sort $(foreach stagearch, \
117 $(patsubst %,ARCH-%-y,$(COREBOOT_STANDARD_STAGES)), \
120 # create_class_compiler: Used to create compiler tool set for
123 # @2: compiler set to be used
124 # e.g.: smm special class uses i386 as compiler set
125 define create_class_compiler
126 $(if $(2),,$(warning *** The toolchain architecture for $(1) is unknown.) \
127 $(warning CONFIG_ARCH_$(1)_* settings in $(DOTCONFIG):) \
128 $(error $(shell grep CONFIG_ARCH_$(1)_ $(DOTCONFIG))))
129 CC_$(1) := $(CC_$(2))
130 GCC_$(1) := $(GCC_CC_$(2))
131 LD_$(1) := $(LD_$(2))
132 NM_$(1) := $(NM_$(2))
133 AR_$(1) := $(AR_$(2))
134 GNATBIND_$(1) := $(GNATBIND_$(2))
135 OBJCOPY_$(1) := $(OBJCOPY_$(2))
136 OBJDUMP_$(1) := $(OBJDUMP_$(2))
137 STRIP_$(1) := $(STRIP_$(2))
138 READELF_$(1) := $(READELF_$(2))
139 CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
140 ADAFLAGS_$(1) = --RTS=$$(obj)/libgnat-$(2)/ $$(ADAFLAGS_common) $$(GCC_ADAFLAGS_$(2))
141 CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
142 COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
143 COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
144 LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
147 # define_class: Allows defining any program as dynamic class and compiler tool
148 # set for the same based on the architecture for which the program is to be
150 # @1: program (class name)
151 # @2: architecture for which the program needs to be compiled
152 # IMP: Ensure that define_class is called before any .c or .S files are added to
153 # the class of the program. Check subdirs-y for order of subdirectory inclusions
156 $(eval $(call create_class_compiler,$(1),$(2)))
159 # initialize standard toolchain (CC,AS and others) for give stage
160 # @1 : stage for which the toolchain is to be initialized
161 init_standard_toolchain = \
162 $(eval $(call set_stage_toolchain,$(1))) \
163 $(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
166 $(foreach stage,$(COREBOOT_STANDARD_STAGES), \
167 $(eval $(call init_standard_toolchain,$(stage))))
169 $(eval $(call toolchain_to_dir))
173 # Test for coreboot toolchain (except when explicitly not requested)
174 ifneq ($(NOCOMPILE),1)
175 # Only run if we're doing a build (not for tests, kconfig, ...)
176 # rationale: gcc versions by Linux distributions tend to be quite messed up
177 # llvm/clang also needs patches supplied by the coreboot build
181 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
182 # Verify that the coreboot toolchain is being used.
183 $(foreach arch,$(sort $(foreach stage,\
184 $(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
185 $(if $(shell if [ -n "$(CC_$(arch))" ]; then \
186 $(CC_$(arch)) -v 2>&1 | grep -q "coreboot toolchain" || \
187 echo not-coreboot; else echo not-coreboot; fi), \
188 $(eval COMPILERFAIL:=1)\
189 $(warning The coreboot toolchain for '$(arch)'\
190 architecture was not found.)))
191 # If iasl doesn't match the current coreboot version, fail the test
192 # TODO: Figure out if iasl is even needed for the build.
193 $(if $(shell if [ -n "$(IASL)" ]; then \
194 $(IASL) -v 2>&1 | grep -q "coreboot toolchain" || \
195 echo not-coreboot; else echo not-coreboot; fi), \
196 $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)\
197 $(warning The coreboot toolchain version of iasl \
198 '$(shell util/crossgcc/buildgcc -s iasl)' was not found))
199 else #$(CONFIG_ANY_TOOLCHAIN)
200 # If the coreboot toolchain isn't being used, verify that there is A toolchain
201 $(foreach arch,$(sort \
202 $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
203 $(if $(CC_$(arch)),, $(eval COMPILERFAIL:=1) \
204 $(warning No compiler found for '$(arch)' architecture. \
205 Install one or use the coreboot toolchain?)) )
206 # If iasl isn't present, fail
207 # TODO: Figure out if iasl is even needed for the build.
208 $(if $(IASL),, $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1) \
209 $(warning iasl not found. \
210 Please install it or use the coreboot toolchain.))
213 # If the compiler check failed, print out warnings
214 ifeq ($(COMPILERFAIL),1)
217 $(warning Path to your toolchain is currently set to '$(XGCCPATH)')
220 $(warning To build the entire coreboot toolchain: run 'make crossgcc')
222 $(warning To build just IASL: run 'make iasl')
223 endif #($(IASLFAIL),1)
224 $(warning For more toolchain build targets: run 'make help_toolchain')
226 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
227 $(warning To try to use any toolchain in your path, \
228 run 'make menuconfig', then select)
229 $(warning the config option: 'General setup', \
230 and 'Allow building with any toolchain')
231 $(warning Note that this is NOT supported. \
232 Using it means you're on your own.)
234 endif #($(CONFIG_ANY_TOOLCHAIN),y)
235 $(error Halting the build)
236 endif #($(COMPILERFAIL),1)
238 endif #($(NOCOMPILE),1)
240 # Run the toolchain version checks if the requested target is 'test-toolchain'
241 # Checks the versions of GCC, binutils, clang, and IASL
242 ifneq ($(MAKECMDGOALS),)
243 ifneq ($(filter test-toolchain,$(MAKECMDGOALS)),)
244 $(foreach arch, $(ARCH_SUPPORTED), \
245 $(if $(shell if [ -n "$(GCC_CC_$(arch))" ]; then \
246 $(GCC_CC_$(arch)) --version 2>&1 | head -n1 | rev | \
247 cut -d ' ' -f 1 | rev | \
248 grep -q "$$(util/crossgcc/buildgcc -s gcc)" || \
249 echo not-current; fi), \
250 $(eval COMPILER_OUT_OF_DATE:=1) \
251 $(warning The coreboot toolchain version of gcc for '$(arch)' \
252 architecture is not the current version.) \
253 $(warning $(arch) gcc version from buildgcc: \
254 $(shell util/crossgcc/buildgcc -s gcc)) \
255 $(warning $(arch) version of gcc executable: \
256 $(shell $(GCC_CC_$(arch)) --version | head -n1 | \
257 rev | cut -d ' ' -f 1 | rev))) \
258 $(if $(shell if [ -n "$(CLANG_CC_$(arch))" ]; then \
259 $(CLANG_CC_$(arch)) --version 2>&1 | \
260 sed 's/.*clang version/clang version/' | \
261 head -n1 | cut -d ' ' -f 3 | \
262 grep -q "$(shell util/crossgcc/buildgcc -s clang)" || \
263 echo not-current; fi), \
264 $(eval COMPILER_OUT_OF_DATE:=1) \
265 $(warning The coreboot toolchain version of clang for \
266 '$(arch)' architecture is not the current version.) \
267 $(warning $(arch) clang version from buildgcc: \
268 $(shell util/crossgcc/buildgcc -s clang)) \
269 $(warning $(arch) version of clang executable: \
270 $(shell $(CLANG_CC_$(arch)) --version 2>&1 | \
271 sed 's/.*clang version/clang version/' | \
272 head -n1 | cut -d ' ' -f 3))) \
273 $(if $(shell if [ "$(OBJDUMP_$(arch))" != "invalidobjdump" ]; then \
274 $(OBJDUMP_$(arch)) -v 2>&1 | \
275 grep -q "$(shell util/crossgcc/buildgcc -s binutils)" || \
276 echo not-current; fi), \
277 $(eval COMPILER_OUT_OF_DATE:=1)\
278 $(warning The coreboot toolchain version of binutils for \
279 '$(arch)' architecture is not the current version.)) \
281 $(if $(shell if [ -n "$(IASL)" ]; then $(IASL) -v 2>&1 | \
282 grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
283 echo not-coreboot; fi), \
284 $(eval COMPILER_OUT_OF_DATE:=1)\
285 $(warning The coreboot toolchain version of iasl \
286 is not the current version) \
287 $(warning $(arch) iasl version from buildgcc: \
288 $(shell util/crossgcc/buildgcc -s iasl)) \
289 $(warning $(arch) version of iasl executable: \
290 $(shell $(IASL) -v 2>&1 | \
291 grep ASL+ | rev | cut -f 1 -d ' ' | rev)))
292 $(eval UPDATED_SUBMODULES:=1)
293 endif #($(filter crossgcc_check%,$(MAKECMDGOALS)),)
294 endif #($(MAKECMDGOALS),)