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.
15 ## You should have received a copy of the GNU General Public License
16 ## along with this program; if not, write to the Free Software
17 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 ifeq ($(CONFIG_CCACHE),y)
23 CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
25 $(error ccache selected, but not found in PATH)
28 export CCACHE_COMPILERCHECK=content
29 export CCACHE_BASEDIR=$(top)
31 $(foreach arch,$(ARCH_SUPPORTED), \
32 $(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))
34 HOSTCC:=$(CCACHE) $(HOSTCC)
35 HOSTCXX:=$(CCACHE) $(HOSTCXX)
36 ROMCC=$(CCACHE) $(ROMCC_BIN)
39 # scan-build integration
40 ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
42 ifeq ($(CCC_ANALYZER_ANALYSIS),)
43 export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
46 $(foreach arch,$(ARCH_SUPPORTED), \
47 $(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))
49 HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
50 HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
51 ROMCC=CCC_CC="$(ROMCC_BIN)" $(CC)
54 COREBOOT_STANDARD_STAGES := bootblock verstage romstage ramstage
59 ARCHDIR-arm64 := arm64
60 ARCHDIR-riscv := riscv
63 CFLAGS_arm := -mno-unaligned-access -ffunction-sections -fdata-sections
65 CFLAGS_arm64 := -ffunction-sections -fdata-sections
67 CFLAGS_mips := -mips32r2 -G 0 -ffunction-sections -fdata-sections
68 CFLAGS_mips += -mno-abicalls -fno-pic
70 CFLAGS_x86_32 += -ffunction-sections -fdata-sections
73 $(foreach arch,$(ARCH_SUPPORTED),\
74 $(eval CPPFLAGS_$(arch) += \
75 -Isrc/arch/$(ARCHDIR-$(arch))/include))
77 # set_stage_toolchain: Decides the toolchain to be used by every stage
78 # E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
79 # ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
80 # decide the compiler toolchain for bootblock stage
81 # This step is essential for initializing the toolchain for coreboot standard
82 # stages i.e. bootblock, romstage and ramstage, since it acts as the second
83 # parameter to create_class_compiler below in init_standard_toolchain
84 set_stage_toolchain= \
85 $(foreach arch,$(ARCH_SUPPORTED),$(eval ARCH-$(1)-$($(shell echo CONFIG_ARCH_$(1)_$(arch) | tr '[:lower:]' '[:upper:]')) := $(arch)))
87 # create_class_compiler: Used to create compiler tool set for
90 # @2: compiler set to be used
91 # e.g.: smm special class uses i386 as compiler set
92 define create_class_compiler
93 $(if $(2),,$(error building $(1) without the required toolchain))
98 OBJCOPY_$(1) := $(OBJCOPY_$(2))
99 OBJDUMP_$(1) := $(OBJDUMP_$(2))
100 STRIP_$(1) := $(STRIP_$(2))
101 READELF_$(1) := $(READELF_$(2))
102 CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
103 CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2))
104 COMPILER_RT_FLAGS_$(1) :=
105 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
106 COMPILER_RT_$(1) = $(shell $(CC_$(2)) $(CFLAGS_$(2)) -print-librt-file-name 2>/dev/null)
108 COMPILER_RT_$(1) = $(wildcard $(shell $(CC_$(2)) $(CFLAGS_$(2)) -print-libgcc-file-name))
110 COMPILER_RT_FLAGS_$(1) := --wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3
115 # define_class: Allows defining any program as dynamic class and compiler tool
116 # set for the same based on the architecture for which the program is to be
118 # @1: program (class name)
119 # @2: architecture for which the program needs to be compiled
120 # IMP: Ensure that define_class is called before any .c or .S files are added to
121 # the class of the program. Check subdirs-y for order of subdirectory inclusions
124 $(eval $(call create_class_compiler,$(1),$(2)))
127 # initialize standard toolchain (CC,AS and others) for give stage
128 # @1 : stage for which the toolchain is to be initialized
129 init_standard_toolchain = \
130 $(eval $(call set_stage_toolchain,$(1))) \
131 $(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
134 $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(eval $(call init_standard_toolchain,$(stage))))
136 $(eval $(call toolchain_to_dir))
140 # Test for coreboot toolchain (except when explicitely not requested)
141 ifneq ($(NOCOMPILE),1)
142 # only run if we're doing a build (not for tests, kconfig, ...), using gcc
143 # rationale: gcc versions by Linux distributions tend to be quite messed up
145 ifeq ($(CONFIG_COMPILER_GCC),y)
146 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
147 $(foreach arch,$(sort $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
148 $(if $(shell $(CC_$(arch)) -v 2>&1 |grep -q "gcc version .*coreboot toolchain" || echo not-coreboot), \
149 $(eval COMPILERFAIL:=1)$(warning Please use the coreboot toolchain for '$(arch)' (or prove that your toolchain works))))
153 ifeq ($(COMPILERFAIL),1)
154 $(error consider building our compilers: make crossgcc)