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
62 CFLAGS_arm64 += -mgeneral-regs-only
63 CFLAGS_mips += -mips32r2 -G 0 -mno-abicalls -fno-pic
66 CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
68 # Some boards only provide 2K stacks, so storing lots of data there leads to
69 # problems. Since C rules don't allow us to statically determine the maximum
70 # stack use, we use 1.5K as heuristic, assuming that we typically have lots
71 # of tiny stack frames and the odd large one.
73 # Store larger buffers in BSS, use MAYBE_STATIC to share code with __PRE_RAM__
75 # Since GCCs detection of dynamic array bounds unfortunately seems to be
76 # very basic, you'll sometimes have to use a static upper bound for the
77 # size and an assert() to make sure it's honored (see gpio_base3_value()
79 # (If you absolutely need a larger stack frame and are 100% sure it cannot
80 # cause problems, you can whitelist it with #pragma diagnostic.)
81 CFLAGS_arm += -Wstack-usage=1536
82 CFLAGS_arm64 += -Wstack-usage=1536
83 CFLAGS_mips += -Wstack-usage=1536
84 CFLAGS_riscv += -Wstack-usage=1536
87 $(foreach arch,$(ARCH_SUPPORTED),\
88 $(eval CPPFLAGS_$(arch) += \
89 -Isrc/arch/$(ARCHDIR-$(arch))/include))
91 # set_stage_toolchain: Decides the toolchain to be used by every stage
92 # E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
93 # ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
94 # decide the compiler toolchain for bootblock stage
95 # This step is essential for initializing the toolchain for coreboot standard
96 # stages i.e. bootblock, romstage and ramstage, since it acts as the second
97 # parameter to create_class_compiler below in init_standard_toolchain
98 map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
99 set_stage_toolchain= \
100 $(foreach arch,$(ARCH_SUPPORTED), \
101 $(eval ARCH-$(1)-$($(shell \
102 echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | \
103 tr '[:lower:]' '[:upper:]')) := $(arch)))
105 # create_class_compiler: Used to create compiler tool set for
108 # @2: compiler set to be used
109 # e.g.: smm special class uses i386 as compiler set
110 define create_class_compiler
111 $(if $(2),,$(error building $(1) without the required toolchain))
112 CC_$(1) := $(CC_$(2))
113 LD_$(1) := $(LD_$(2))
114 NM_$(1) := $(NM_$(2))
115 AR_$(1) := $(AR_$(2))
116 OBJCOPY_$(1) := $(OBJCOPY_$(2))
117 OBJDUMP_$(1) := $(OBJDUMP_$(2))
118 STRIP_$(1) := $(STRIP_$(2))
119 READELF_$(1) := $(READELF_$(2))
120 CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
121 CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
122 COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
123 COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
124 LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
127 # define_class: Allows defining any program as dynamic class and compiler tool
128 # set for the same based on the architecture for which the program is to be
130 # @1: program (class name)
131 # @2: architecture for which the program needs to be compiled
132 # IMP: Ensure that define_class is called before any .c or .S files are added to
133 # the class of the program. Check subdirs-y for order of subdirectory inclusions
136 $(eval $(call create_class_compiler,$(1),$(2)))
139 # initialize standard toolchain (CC,AS and others) for give stage
140 # @1 : stage for which the toolchain is to be initialized
141 init_standard_toolchain = \
142 $(eval $(call set_stage_toolchain,$(1))) \
143 $(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
146 $(foreach stage,$(COREBOOT_STANDARD_STAGES), \
147 $(eval $(call init_standard_toolchain,$(stage))))
149 $(eval $(call toolchain_to_dir))
153 # Test for coreboot toolchain (except when explicitly not requested)
154 ifneq ($(NOCOMPILE),1)
155 # Only run if we're doing a build (not for tests, kconfig, ...)
156 # rationale: gcc versions by Linux distributions tend to be quite messed up
157 # llvm/clang also needs patches supplied by the coreboot build
161 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
162 # Verify that the coreboot toolchain is being used.
163 $(foreach arch,$(sort $(foreach stage,\
164 $(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
165 $(if $(shell if [ -n "$(CC_$(arch))" ]; then \
166 $(CC_$(arch)) -v 2>&1 | grep -q "coreboot toolchain" || \
167 echo not-coreboot; else echo not-coreboot; fi), \
168 $(eval COMPILERFAIL:=1)\
169 $(warning The coreboot toolchain for '$(arch)'\
170 architecture was not found.)))
171 # If iasl doesn't match the current coreboot version, fail the test
172 # TODO: Figure out if iasl is even needed for the build.
173 $(if $(shell if [ -n "$(IASL)" ]; then \
174 $(IASL) -v 2>&1 | grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
175 echo not-coreboot; else echo not-coreboot; fi), \
176 $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)\
177 $(warning The coreboot toolchain version of iasl \
178 '$(shell util/crossgcc/buildgcc -s iasl)' was not found))
179 else #$(CONFIG_ANY_TOOLCHAIN)
180 # If the coreboot toolchain isn't being used, verify that there is A toolchain
181 $(foreach arch,$(sort \
182 $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
183 $(if $(CC_$(arch)),, $(eval COMPILERFAIL:=1) \
184 $(warning No compiler found for '$(arch)' architecture. \
185 Install one or use the coreboot toolchain?)) )
186 # If iasl isn't present, fail
187 # TODO: Figure out if iasl is even needed for the build.
188 $(if $(IASL),, $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1) \
189 $(warning iasl not found. \
190 Please install it or use the coreboot toolchain.))
193 # If the compiler check failed, print out warnings
194 ifeq ($(COMPILERFAIL),1)
197 $(warning Path to your toolchain is currently set to '$(XGCCPATH)')
200 $(warning To build the entire coreboot toolchain: run 'make crossgcc')
202 $(warning To build just IASL: run 'make iasl')
203 endif #($(IASLFAIL),1)
204 $(warning For more toolchain build targets: run 'make help_toolchain')
206 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
207 $(warning To try to use any toolchain in your path, \
208 run 'make menuconfig', then select)
209 $(warning the config option: 'General setup', \
210 and 'Allow building with any toolchain')
211 $(warning Note that this is NOT supported. \
212 Using it means you're on your own.)
214 endif #($(CONFIG_ANY_TOOLCHAIN),y)
215 $(error Halting the build)
216 endif #($(COMPILERFAIL),1)
218 endif #($(NOCOMPILE),1)
220 # Run the toolchain version checks if the requested target is 'test-toolchain'
221 # Checks the versions of GCC, binutils, clang, and IASL
222 ifneq ($(MAKECMDGOALS),)
223 ifneq ($(filter test-toolchain,$(MAKECMDGOALS)),)
224 $(foreach arch, $(ARCH_SUPPORTED), \
225 $(if $(shell if [ -n "$(GCC_CC_$(arch))" ]; then \
226 $(GCC_CC_$(arch)) -v 2>&1 | \
227 grep -q "$(shell util/crossgcc/buildgcc -s gcc)" || \
228 echo not-current; fi), \
229 $(eval COMPILER_OUT_OF_DATE:=1) \
230 $(warning The coreboot toolchain version of gcc for '$(arch)' \
231 architecture is not the current version.)) \
232 $(if $(shell if [ -n "$(CLANG_CC_$(arch))" ]; then \
233 $(CLANG_CC_$(arch)) -v 2>&1 | \
234 grep -q "$(shell util/crossgcc/buildgcc -s clang)" || \
235 echo not-current; fi), \
236 $(eval COMPILER_OUT_OF_DATE:=1)\
237 $(warning The coreboot toolchain version of clang for \
238 '$(arch)' architecture is not the current version.)) \
239 $(if $(shell if [ "$(OBJDUMP_$(arch))" != "invalidobjdump" ]; then \
240 $(OBJDUMP_$(arch)) -v 2>&1 | \
241 grep -q "$(shell util/crossgcc/buildgcc -s binutils)" || \
242 echo not-current; fi), \
243 $(eval COMPILER_OUT_OF_DATE:=1)\
244 $(warning The coreboot toolchain version of binutils for \
245 '$(arch)' architecture is not the current version.)) \
247 $(if $(shell if [ -n "$(IASL)" ]; then $(IASL) -v 2>&1 | \
248 grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
249 echo not-coreboot; fi), \
250 $(eval COMPILER_OUT_OF_DATE:=1)\
251 $(warning The coreboot toolchain version of iasl \
252 is not the current version))
253 endif #($(filter crossgcc_check%,$(MAKECMDGOALS)),)
254 endif #($(MAKECMDGOALS),)