2 ## This file is part of the coreboot project.
4 ## Copyright (C) 2014 Google Inc
6 ## This program is free software; you can redistribute it and/or modify
7 ## it under the terms of the GNU General Public License as published by
8 ## the Free Software Foundation; version 2 of the License.
10 ## This program is distributed in the hope that it will be useful,
11 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ## GNU General Public License for more details.
17 ifeq ($(CONFIG_CCACHE),y)
19 CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
21 $(error ccache selected, but not found in PATH)
24 export CCACHE_COMPILERCHECK=content
25 export CCACHE_BASEDIR=$(top)
27 $(foreach arch,$(ARCH_SUPPORTED), \
28 $(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))
30 HOSTCC:=$(CCACHE) $(HOSTCC)
31 HOSTCXX:=$(CCACHE) $(HOSTCXX)
32 ROMCC=$(CCACHE) $(ROMCC_BIN)
35 # scan-build integration
36 ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
38 ifeq ($(CCC_ANALYZER_ANALYSIS),)
39 export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
42 $(foreach arch,$(ARCH_SUPPORTED), \
43 $(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))
45 HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
46 HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
47 ROMCC=CCC_CC="$(ROMCC_BIN)" $(CC)
50 COREBOOT_STANDARD_STAGES := bootblock libverstage verstage romstage ramstage
51 MAP-libverstage := verstage
57 ARCHDIR-arm64 := arm64
58 ARCHDIR-riscv := riscv
60 ARCHDIR-power8 := power8
63 CFLAGS_arm64 += -mgeneral-regs-only
64 CFLAGS_mips += -mips32r2 -G 0 -mno-abicalls -fno-pic
67 CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
70 # Some boards only provide 2K stacks, so storing lots of data there leads to
71 # problems. Since C rules don't allow us to statically determine the maximum
72 # stack use, we use 1.5K as heuristic, assuming that we typically have lots
73 # of tiny stack frames and the odd large one.
75 # Store larger buffers in BSS, use MAYBE_STATIC to share code with __PRE_RAM__
77 # Since GCCs detection of dynamic array bounds unfortunately seems to be
78 # very basic, you'll sometimes have to use a static upper bound for the
79 # size and an assert() to make sure it's honored (see gpio_base3_value()
81 # (If you absolutely need a larger stack frame and are 100% sure it cannot
82 # cause problems, you can whitelist it with #pragma diagnostic.)
83 CFLAGS_arm += -Wstack-usage=1536
84 CFLAGS_arm64 += -Wstack-usage=1536
85 CFLAGS_mips += -Wstack-usage=1536
86 CFLAGS_riscv += -Wstack-usage=1536
87 CFLAGS_power8 += -Wstack-usage=1536
90 $(foreach arch,$(ARCH_SUPPORTED),\
91 $(eval CPPFLAGS_$(arch) += \
92 -Isrc/arch/$(ARCHDIR-$(arch))/include))
94 # set_stage_toolchain: Decides the toolchain to be used by every stage
95 # E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
96 # ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
97 # decide the compiler toolchain for bootblock stage
98 # This step is essential for initializing the toolchain for coreboot standard
99 # stages i.e. bootblock, romstage and ramstage, since it acts as the second
100 # parameter to create_class_compiler below in init_standard_toolchain
101 map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
102 set_stage_toolchain= \
103 $(foreach arch,$(ARCH_SUPPORTED), \
104 $(eval ARCH-$(1)-$($(shell \
105 echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | \
106 tr '[:lower:]' '[:upper:]')) := $(arch)))
108 # create_class_compiler: Used to create compiler tool set for
111 # @2: compiler set to be used
112 # e.g.: smm special class uses i386 as compiler set
113 define create_class_compiler
114 $(if $(2),,$(warning *** The toolchain architecture for $(1) is unknown.) \
115 $(error Check your .config file for CONFIG_ARCH_$(1)_* settings))
116 CC_$(1) := $(CC_$(2))
117 LD_$(1) := $(LD_$(2))
118 NM_$(1) := $(NM_$(2))
119 AR_$(1) := $(AR_$(2))
120 OBJCOPY_$(1) := $(OBJCOPY_$(2))
121 OBJDUMP_$(1) := $(OBJDUMP_$(2))
122 STRIP_$(1) := $(STRIP_$(2))
123 READELF_$(1) := $(READELF_$(2))
124 CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
125 CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
126 COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
127 COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
128 LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
131 # define_class: Allows defining any program as dynamic class and compiler tool
132 # set for the same based on the architecture for which the program is to be
134 # @1: program (class name)
135 # @2: architecture for which the program needs to be compiled
136 # IMP: Ensure that define_class is called before any .c or .S files are added to
137 # the class of the program. Check subdirs-y for order of subdirectory inclusions
140 $(eval $(call create_class_compiler,$(1),$(2)))
143 # initialize standard toolchain (CC,AS and others) for give stage
144 # @1 : stage for which the toolchain is to be initialized
145 init_standard_toolchain = \
146 $(eval $(call set_stage_toolchain,$(1))) \
147 $(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
150 $(foreach stage,$(COREBOOT_STANDARD_STAGES), \
151 $(eval $(call init_standard_toolchain,$(stage))))
153 $(eval $(call toolchain_to_dir))
157 # Test for coreboot toolchain (except when explicitly not requested)
158 ifneq ($(NOCOMPILE),1)
159 # Only run if we're doing a build (not for tests, kconfig, ...)
160 # rationale: gcc versions by Linux distributions tend to be quite messed up
161 # llvm/clang also needs patches supplied by the coreboot build
165 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
166 # Verify that the coreboot toolchain is being used.
167 $(foreach arch,$(sort $(foreach stage,\
168 $(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
169 $(if $(shell if [ -n "$(CC_$(arch))" ]; then \
170 $(CC_$(arch)) -v 2>&1 | grep -q "coreboot toolchain" || \
171 echo not-coreboot; else echo not-coreboot; fi), \
172 $(eval COMPILERFAIL:=1)\
173 $(warning The coreboot toolchain for '$(arch)'\
174 architecture was not found.)))
175 # If iasl doesn't match the current coreboot version, fail the test
176 # TODO: Figure out if iasl is even needed for the build.
177 $(if $(shell if [ -n "$(IASL)" ]; then \
178 $(IASL) -v 2>&1 | grep -q "coreboot toolchain" || \
179 echo not-coreboot; else echo not-coreboot; fi), \
180 $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)\
181 $(warning The coreboot toolchain version of iasl \
182 '$(shell util/crossgcc/buildgcc -s iasl)' was not found))
183 else #$(CONFIG_ANY_TOOLCHAIN)
184 # If the coreboot toolchain isn't being used, verify that there is A toolchain
185 $(foreach arch,$(sort \
186 $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
187 $(if $(CC_$(arch)),, $(eval COMPILERFAIL:=1) \
188 $(warning No compiler found for '$(arch)' architecture. \
189 Install one or use the coreboot toolchain?)) )
190 # If iasl isn't present, fail
191 # TODO: Figure out if iasl is even needed for the build.
192 $(if $(IASL),, $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1) \
193 $(warning iasl not found. \
194 Please install it or use the coreboot toolchain.))
197 # If the compiler check failed, print out warnings
198 ifeq ($(COMPILERFAIL),1)
201 $(warning Path to your toolchain is currently set to '$(XGCCPATH)')
204 $(warning To build the entire coreboot toolchain: run 'make crossgcc')
206 $(warning To build just IASL: run 'make iasl')
207 endif #($(IASLFAIL),1)
208 $(warning For more toolchain build targets: run 'make help_toolchain')
210 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
211 $(warning To try to use any toolchain in your path, \
212 run 'make menuconfig', then select)
213 $(warning the config option: 'General setup', \
214 and 'Allow building with any toolchain')
215 $(warning Note that this is NOT supported. \
216 Using it means you're on your own.)
218 endif #($(CONFIG_ANY_TOOLCHAIN),y)
219 $(error Halting the build)
220 endif #($(COMPILERFAIL),1)
222 endif #($(NOCOMPILE),1)
224 # Run the toolchain version checks if the requested target is 'test-toolchain'
225 # Checks the versions of GCC, binutils, clang, and IASL
226 ifneq ($(MAKECMDGOALS),)
227 ifneq ($(filter test-toolchain,$(MAKECMDGOALS)),)
228 $(foreach arch, $(ARCH_SUPPORTED), \
229 $(if $(shell if [ -n "$(GCC_CC_$(arch))" ]; then \
230 $(GCC_CC_$(arch)) -v 2>&1 | \
231 grep -q "$(shell util/crossgcc/buildgcc -s gcc)" || \
232 echo not-current; fi), \
233 $(eval COMPILER_OUT_OF_DATE:=1) \
234 $(warning The coreboot toolchain version of gcc for '$(arch)' \
235 architecture is not the current version.)) \
236 $(if $(shell if [ -n "$(CLANG_CC_$(arch))" ]; then \
237 $(CLANG_CC_$(arch)) -v 2>&1 | \
238 grep -q "$(shell util/crossgcc/buildgcc -s clang)" || \
239 echo not-current; fi), \
240 $(eval COMPILER_OUT_OF_DATE:=1)\
241 $(warning The coreboot toolchain version of clang for \
242 '$(arch)' architecture is not the current version.)) \
243 $(if $(shell if [ "$(OBJDUMP_$(arch))" != "invalidobjdump" ]; then \
244 $(OBJDUMP_$(arch)) -v 2>&1 | \
245 grep -q "$(shell util/crossgcc/buildgcc -s binutils)" || \
246 echo not-current; fi), \
247 $(eval COMPILER_OUT_OF_DATE:=1)\
248 $(warning The coreboot toolchain version of binutils for \
249 '$(arch)' architecture is not the current version.)) \
251 $(if $(shell if [ -n "$(IASL)" ]; then $(IASL) -v 2>&1 | \
252 grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
253 echo not-coreboot; fi), \
254 $(eval COMPILER_OUT_OF_DATE:=1)\
255 $(warning The coreboot toolchain version of iasl \
256 is not the current version))
257 endif #($(filter crossgcc_check%,$(MAKECMDGOALS)),)
258 endif #($(MAKECMDGOALS),)