| # |
| # Copyright (c) 2023-2024, Arm Limited and Contributors. All rights reserved. |
| # |
| # SPDX-License-Identifier: BSD-3-Clause |
| # |
| |
| # |
| # TF-A uses three toolchains: |
| # |
| # - The host toolchain (`host`) for building native tools |
| # - The AArch32 toolchain (`aarch32`) for building Arm AArch32 images |
| # - The AArch64 toolchain (`aarch64`) for building Arm AArch64 images |
| # |
| # In the main Makefile only one of the two Arm toolchains is enabled in any |
| # given build, but individual tools and libraries may need access to both. |
| # |
| |
| ifndef toolchain-mk |
| toolchain-mk := $(lastword $(MAKEFILE_LIST)) |
| |
| toolchains ?= host $(ARCH) |
| |
| include $(dir $(lastword $(MAKEFILE_LIST)))build_env.mk |
| include $(dir $(lastword $(MAKEFILE_LIST)))utilities.mk |
| |
| include $(addprefix $(dir $(lastword $(MAKEFILE_LIST)))toolchains/, \ |
| $(addsuffix .mk,$(toolchains))) |
| |
| # |
| # Configure tool classes that we recognize. |
| # |
| # In the context of this build system, a tool class identifies a |
| # specific role or type of tool in the toolchain. |
| # |
| |
| tool-classes := cc |
| tool-class-name-cc := C compiler |
| |
| tool-classes += cpp |
| tool-class-name-cpp := C preprocessor |
| |
| tool-classes += as |
| tool-class-name-as := assembler |
| |
| tool-classes += ld |
| tool-class-name-ld := linker |
| |
| tool-classes += oc |
| tool-class-name-oc := object copier |
| |
| tool-classes += od |
| tool-class-name-od := object dumper |
| |
| tool-classes += ar |
| tool-class-name-ar := archiver |
| |
| tool-classes += dtc |
| tool-class-name-dtc := device tree compiler |
| |
| # |
| # Configure tools that we recognize. |
| # |
| # Here we declare the list of specific toolchain tools that we know how |
| # to interact with. We don't organize these into tool classes yet - that |
| # happens further down. |
| # |
| |
| # Arm® Compiler for Embedded |
| tools := arm-clang |
| tool-name-arm-clang := Arm® Compiler for Embedded `armclang` |
| |
| tools += arm-link |
| tool-name-arm-link := Arm® Compiler for Embedded `armlink` |
| |
| tools += arm-ar |
| tool-name-arm-ar := Arm® Compiler for Embedded `armar` |
| |
| tools += arm-fromelf |
| tool-name-arm-fromelf := Arm® Compiler for Embedded `fromelf` |
| |
| # LLVM Project |
| tools += llvm-clang |
| tool-name-llvm-clang := LLVM Clang (`clang`) |
| |
| tools += llvm-lld |
| tool-name-llvm-lld := LLVM LLD (`lld`) |
| |
| tools += llvm-objcopy |
| tool-name-llvm-objcopy := LLVM `llvm-objcopy` |
| |
| tools += llvm-objdump |
| tool-name-llvm-objdump := LLVM `llvm-objdump` |
| |
| tools += llvm-ar |
| tool-name-llvm-ar := LLVM `llvm-ar` |
| |
| # GNU Compiler Collection & GNU Binary Utilities |
| tools += gnu-gcc |
| tool-name-gnu-gcc := GNU GCC (`gcc`) |
| |
| tools += gnu-ld |
| tool-name-gnu-ld := GNU LD (`ld.bfd`) |
| |
| tools += gnu-objcopy |
| tool-name-gnu-objcopy := GNU `objcopy` |
| |
| tools += gnu-objdump |
| tool-name-gnu-objdump := GNU `objdump` |
| |
| tools += gnu-ar |
| tool-name-gnu-ar := GNU `ar` |
| |
| # Other tools |
| tools += generic-dtc |
| tool-name-generic-dtc := Device Tree Compiler (`dtc`) |
| |
| # |
| # Assign tools to tool classes. |
| # |
| # Multifunctional tools, i.e. tools which can perform multiple roles in |
| # a toolchain, may be specified in multiple tool class lists. For |
| # example, a C compiler which can also perform the role of a linker may |
| # be placed in both `tools-cc` and `tools-ld`. |
| # |
| |
| # C-related tools |
| tools-cc := arm-clang llvm-clang gnu-gcc # C compilers |
| tools-cpp := arm-clang llvm-clang gnu-gcc # C preprocessors |
| |
| # Assembly-related tools |
| tools-as := arm-clang llvm-clang gnu-gcc # Assemblers |
| |
| # Linking and object-handling tools |
| tools-ld := arm-clang arm-link llvm-clang llvm-lld gnu-gcc gnu-ld # Linkers |
| tools-oc := arm-fromelf llvm-objcopy gnu-objcopy # Object copiers |
| tools-od := arm-fromelf llvm-objdump gnu-objdump # Object dumpers |
| tools-ar := arm-ar llvm-ar gnu-ar # Archivers |
| |
| # Other tools |
| tools-dtc := generic-dtc # Device tree compilers |
| |
| define check-tool-class-tools |
| $(eval tool-class := $(1)) |
| |
| ifndef tools-$(tool-class) |
| $$(error no tools registered to handle tool class `$(tool-class)`) |
| endif |
| endef |
| |
| $(foreach tool-class,$(tool-classes), \ |
| $(eval $(call check-tool-class-tools,$(tool-class)))) |
| |
| # |
| # Default tools for each toolchain. |
| # |
| # Toolchains can specify a default path to any given tool with a tool |
| # class. These values are used in the absence of user-specified values, |
| # and are configured by the makefile for each toolchain using variables |
| # of the form: |
| # |
| # - $(toolchain)-$(tool-class)-default |
| # |
| # For example, the default C compiler for the AArch32 and AArch64 |
| # toolchains could be configured with: |
| # |
| # - aarch32-cc-default |
| # - aarch64-cc-default |
| # |
| |
| define check-toolchain-tool-class-default |
| $(eval toolchain := $(1)) |
| $(eval tool-class := $(2)) |
| |
| ifndef $(toolchain)-$(tool-class)-default |
| $$(error no default value specified for tool class `$(tool-class)` of toolchain `$(toolchain)`) |
| endif |
| endef |
| |
| define check-toolchain-tool-class-defaults |
| $(eval toolchain := $(1)) |
| |
| $(foreach tool-class,$(tool-classes), \ |
| $(eval $(call check-toolchain-tool-class-default,$(toolchain),$(tool-class)))) |
| endef |
| |
| $(foreach toolchain,$(toolchains), \ |
| $(eval $(call check-toolchain-tool-class-defaults,$(toolchain)))) |
| |
| # |
| # Helper functions to identify toolchain tools. |
| # |
| # The functions defined in this section return a tool identifier when |
| # given a path to a binary. We generally check a help or version string |
| # to more reliably identify tools than by looking at the path alone |
| # (e.g. `gcc` on macOS is actually Apple Clang). |
| # |
| # Each tool-guessing function (`guess-tool-$(tool)`) takes a single |
| # argument giving the path to the tool to guess, and returns a non-empty |
| # value if the tool corresponds to the tool identifier `$(tool)`: |
| # |
| # $(call guess-tool-llvm-clang,aarch64-none-elf-gcc) # <empty> |
| # $(call guess-tool-gnu-gcc,aarch64-none-elf-gcc) # <non-empty> |
| # |
| # The `guess-tool` function tries to find the corresponding tool |
| # identifier for a tool given its path. It takes two arguments: |
| # |
| # - $(1): a list of candidate tool identifiers to check |
| # - $(2): the path to the tool to identify |
| # |
| # If any of the guess functions corresponding to candidate tool |
| # identifiers return a non-empty value then the tool identifier of the |
| # first function to do so is returned: |
| # |
| # $(call guess-tool,gnu-gcc llvm-clang,armclang) # <empty> |
| # $(call guess-tool,gnu-gcc llvm-clang,clang-14) # llvm-clang |
| # $(call guess-tool,gnu-gcc llvm-clang,aarch64-none-elf-gcc-12) # gnu-gcc |
| # |
| # Tools are checked in the order that they appear in |
| # `tools-$(tool-class)`, and the first match is returned. |
| # |
| |
| # Arm Compiler for Embedded |
| guess-tool-arm-clang = $(shell $(1) --version 2>&1 <$(nul) | grep -o "Tool: armclang") |
| guess-tool-arm-link = $(shell $(1) --help 2>&1 <$(nul) | grep -o "Tool: armlink") |
| guess-tool-arm-fromelf = $(shell $(1) --help 2>&1 <$(nul) | grep -o "Tool: fromelf") |
| guess-tool-arm-ar = $(shell $(1) --version 2>&1 <$(nul) | grep -o "Tool: armar") |
| |
| # LLVM Project |
| guess-tool-llvm-clang = $(shell $(1) -v 2>&1 <$(nul) | grep -o "clang version") |
| guess-tool-llvm-lld = $(shell $(1) --help 2>&1 <$(nul) | grep -o "OVERVIEW: lld") |
| guess-tool-llvm-objcopy = $(shell $(1) --help 2>&1 <$(nul) | grep -o "llvm-objcopy tool") |
| guess-tool-llvm-objdump = $(shell $(1) --help 2>&1 <$(nul) | grep -o "llvm object file dumper") |
| guess-tool-llvm-ar = $(shell $(1) --help 2>&1 <$(nul) | grep -o "LLVM Archiver") |
| |
| # GNU Compiler Collection & GNU Binary Utilities |
| guess-tool-gnu-gcc = $(shell $(1) -v 2>&1 <$(nul) | grep -o "gcc version") |
| guess-tool-gnu-ld = $(shell $(1) -v 2>&1 <$(nul) | grep -o "GNU ld") |
| guess-tool-gnu-objcopy = $(shell $(1) --version 2>&1 <$(nul) | grep -o "GNU objcopy") |
| guess-tool-gnu-objdump = $(shell $(1) --version 2>&1 <$(nul) | grep -o "GNU objdump") |
| guess-tool-gnu-ar = $(shell $(1) --version 2>&1 <$(nul) | grep -o "GNU ar") |
| |
| # Other tools |
| guess-tool-generic-dtc = $(shell $(1) --version 2>&1 <$(nul) | grep -o "Version: DTC") |
| |
| guess-tool = $(firstword $(foreach candidate,$(1), \ |
| $(if $(call guess-tool-$(candidate),$(2)),$(candidate)))) |
| |
| # |
| # Locate and identify tools belonging to each toolchain. |
| # |
| # Each tool class in each toolchain receives a variable of the form |
| # `$(toolchain)-$(tool)` giving the associated path to the program. For |
| # example: |
| # |
| # - `aarch64-ld` gives the linker for the AArch64 toolchain, |
| # - `aarch32-oc` gives the object copier for the AArch32 toolchain, and |
| # - `host-cc` gives the C compiler for the host toolchain. |
| # |
| # For each of these variables, if no program path is explicitly provided |
| # by the parent Makefile then the C compiler is queried (if supported) |
| # for its location. This is done via the `guess-$(tool)-$(tool-class)` |
| # set of functions. For example: |
| # |
| # - `guess-arm-clang-ld` guesses the linker via Arm Clang, |
| # - `guess-llvm-clang-as` guesses the assembler via LLVM Clang, and |
| # - `guess-gnu-gcc-od` guesses the object dumper via GNU GCC. |
| # |
| # If the C compiler cannot provide the location (or the tool class is |
| # the C compiler), then it is assigned the value of the |
| # `$(toolchain)-$(tool)-default` variable. |
| # |
| |
| guess-arm-clang-cpp = $(1) |
| guess-arm-clang-as = $(1) |
| guess-arm-clang-ld = # Fall back to `$(toolchain)-ld-default` |
| guess-arm-clang-oc = # Fall back to `$(toolchain)-oc-default` |
| guess-arm-clang-od = # Fall back to `$(toolchain)-od-default` |
| guess-arm-clang-ar = # Fall back to `$(toolchain)-ar-default` |
| |
| guess-llvm-clang-cpp = $(1) |
| guess-llvm-clang-as = $(1) |
| guess-llvm-clang-ld = $(shell $(1) --print-prog-name ld.lld 2>$(nul)) |
| guess-llvm-clang-oc = $(shell $(1) --print-prog-name llvm-objcopy 2>$(nul)) |
| guess-llvm-clang-od = $(shell $(1) --print-prog-name llvm-objdump 2>$(nul)) |
| guess-llvm-clang-ar = $(shell $(1) --print-prog-name llvm-ar 2>$(nul)) |
| |
| guess-gnu-gcc-cpp = $(1) |
| guess-gnu-gcc-as = $(1) |
| guess-gnu-gcc-ld = $(1) |
| guess-gnu-gcc-oc = $(shell $(1) --print-prog-name objcopy 2>$(nul)) |
| guess-gnu-gcc-od = $(shell $(1) --print-prog-name objdump 2>$(nul)) |
| guess-gnu-gcc-ar = $(call which,$(call decompat-path,$(patsubst %$(call file-name,$(1)),%$(subst gcc,gcc-ar,$(call file-name,$(1))),$(call compat-path,$(1))))) |
| |
| define toolchain-warn-unrecognized |
| $$(warning ) |
| $$(warning The configured $$($(1)-name) $$(tool-class-name-$(2)) could not be identified and may not be supported:) |
| $$(warning ) |
| $$(warning $$(space) $$($(1)-$(2))) |
| $$(warning ) |
| $$(warning The default $$($(1)-name) $$(tool-class-name-$(2)) is:) |
| $$(warning ) |
| $$(warning $$(space) $$($(1)-$(2)-default)) |
| $$(warning ) |
| $$(warning The following tools are supported:) |
| $$(warning ) |
| |
| $$(foreach tool,$$(tools-$(2)), \ |
| $$(warning $$(space) - $$(tool-name-$$(tool)))) |
| |
| $$(warning ) |
| $$(warning The build system will treat this $$(tool-class-name-$(2)) as $$(tool-name-$$($(1)-$(2)-id-default)).) |
| $$(warning ) |
| endef |
| |
| define toolchain-determine-tool |
| $(1)-$(2)-guess = $$(if $$(filter-out cc,$(2)),$\ |
| $$(call guess-$$($(1)-cc-id)-$(2),$$($(1)-cc))) |
| |
| $(1)-$(2) := $$(or $$($(1)-$(2)),$$($(1)-$(2)-guess)) |
| $(1)-$(2) := $$(or $$($(1)-$(2)),$$($(1)-$(2)-default)) |
| |
| ifneq ($$(call which,$$($(1)-$(2))),) |
| # If we can resolve this tool to a program on the `PATH` |
| # then escape it for use in a shell, which allows us to |
| # preserve spaces. |
| |
| $(1)-$(2) := $$(call escape-shell,$$($(1)-$(2))) |
| endif |
| |
| $(1)-$(2)-id := $$(call guess-tool,$$(tools-$(2)),$$($(1)-$(2))) |
| |
| ifndef $(1)-$(2)-id |
| $(1)-$(2)-id := $$($(1)-$(2)-id-default) |
| |
| $$(eval $$(call toolchain-warn-unrecognized,$(1),$(2))) |
| endif |
| endef |
| |
| define toolchain-determine |
| $$(foreach tool-class,$$(tool-classes), \ |
| $$(eval $$(call toolchain-determine-tool,$(1),$$(tool-class)))) |
| endef |
| |
| $(foreach toolchain,$(toolchains), \ |
| $(eval $(call toolchain-determine,$(toolchain)))) |
| endif |