mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2026-07-02 10:22:37 +00:00
Chris Kay
78cb57ccbc
When we split toolchain tool commands into their wrapper and program shell fragments, we do so by iterating over each shell word and forwarding it to `toolchain-guess-tool`. However, we receive each word in its raw form, but we pass it to a function which expects a fragment. If the raw word contains characters which are syntactically-meaningful to the shell, then the command can misbehave, and the build system can unwittingly do some funky things. This small change just ensures that we re-quote the shell word we receive before forwarding it on. Change-Id: I325e1c135fee97d749da927c08e181775b14d146 Signed-off-by: Chris Kay <chris.kay@arm.com>
572 lines
23 KiB
Makefile
572 lines
23 KiB
Makefile
#
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# Copyright (c) 2023-2025, Arm Limited and Contributors. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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#
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# TF-A uses three toolchains:
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#
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# - The host toolchain (`host`) for building native tools
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# - The AArch32 toolchain (`aarch32`) for building Arm AArch32 images
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# - The AArch64 toolchain (`aarch64`) for building Arm AArch64 images
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#
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# In the main Makefile only one of the two Arm toolchains is enabled in any
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# given build, but individual tools and libraries may need access to both.
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#
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ifndef toolchain-mk
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toolchain-mk := $(lastword $(MAKEFILE_LIST))
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include $(dir $(toolchain-mk))utilities.mk
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#
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# Make assigns generic default values to `CC`, `CPP`, `AS`, etc. if they
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# are not explicitly assigned values by the user. These are usually okay
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# for very simple programs when building for the host system, but we
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# need greater control over the toolchain flow.
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#
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# Therefore, we undefine these built-in variables if they have default
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# values, so that we can provide our own default values later instead.
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#
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ifeq ($(origin CC),default)
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undefine CC
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endif
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ifeq ($(origin CPP),default)
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undefine CPP
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endif
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ifeq ($(origin AS),default)
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undefine AS
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endif
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ifeq ($(origin AR),default)
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undefine AR
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endif
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ifeq ($(origin LD),default)
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undefine LD
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endif
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#
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# The full list of toolchains supported by TF-A.
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#
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# Each of these toolchains defines a file of the same name in the
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# `toolchains` directory, which must configure the following variables:
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#
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# - <toolchain>-name
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#
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# A human-readable name for the toolchain,
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#
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# Additionally, for every tool class, it must also define:
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#
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# - <toolchain>-<tool-class>-parameter
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#
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# The command line or environment variable used to set the tool for
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# for the given tool class.
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#
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# - <toolchain>-<tool-class>-default-id
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#
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# The default tool identifier used if the tool for the given tool
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# class cannot be identified.
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#
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# - <toolchain>-<tool-class>-default
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#
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# The default commands to try, in the order defined, for the given
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# tool class if the user does not explicitly provide one, and if the
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# command could not be derived from the C compiler.
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#
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toolchains := host # Used for host targets
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toolchains += aarch32 # Used for AArch32 targets
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toolchains += aarch64 # Used for AArch64 targets
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toolchains += rk3399-m0 # Used for RK3399 Cortex-M0 targets
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include $(toolchains:%=$(dir $(toolchain-mk))toolchains/%.mk)
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#
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# Configure tool classes that we recognize.
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#
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# In the context of this build system, a tool class identifies a
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# specific role or type of tool in the toolchain.
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#
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toolchain-tool-classes := cc
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toolchain-tool-class-name-cc := C compiler
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toolchain-tool-classes += cpp
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toolchain-tool-class-name-cpp := C preprocessor
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toolchain-tool-classes += as
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toolchain-tool-class-name-as := assembler
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toolchain-tool-classes += ld
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toolchain-tool-class-name-ld := linker
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toolchain-tool-classes += oc
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toolchain-tool-class-name-oc := object copier
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toolchain-tool-classes += od
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toolchain-tool-class-name-od := object dumper
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toolchain-tool-classes += ar
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toolchain-tool-class-name-ar := archiver
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toolchain-tool-classes += dtc
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toolchain-tool-class-name-dtc := device tree compiler
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toolchain-tool-classes += poetry
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toolchain-tool-class-name-poetry := Python Poetry package manager
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#
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# Configure tools that we recognize.
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#
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# Here we declare the list of specific toolchain tools that we know how
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# to interact with. We don't organize these into tool classes yet - that
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# happens further down.
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#
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# Arm® Compiler for Embedded
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toolchain-tools := arm-clang
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toolchain-tool-name-arm-clang := Arm® Compiler for Embedded `armclang`
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toolchain-tools += arm-link
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toolchain-tool-name-arm-link := Arm® Compiler for Embedded `armlink`
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toolchain-tools += arm-ar
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toolchain-tool-name-arm-ar := Arm® Compiler for Embedded `armar`
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toolchain-tools += arm-fromelf
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toolchain-tool-name-arm-fromelf := Arm® Compiler for Embedded `fromelf`
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# LLVM Project
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toolchain-tools += llvm-clang
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toolchain-tool-name-llvm-clang := LLVM Clang (`clang`)
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toolchain-tools += llvm-lld
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toolchain-tool-name-llvm-lld := LLVM LLD (`lld`)
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toolchain-tools += llvm-objcopy
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toolchain-tool-name-llvm-objcopy := LLVM `llvm-objcopy`
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toolchain-tools += llvm-objdump
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toolchain-tool-name-llvm-objdump := LLVM `llvm-objdump`
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toolchain-tools += llvm-ar
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toolchain-tool-name-llvm-ar := LLVM `llvm-ar`
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# GNU Compiler Collection & GNU Binary Utilities
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toolchain-tools += gnu-gcc
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toolchain-tool-name-gnu-gcc := GNU GCC (`gcc`)
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toolchain-tools += gnu-ld
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toolchain-tool-name-gnu-ld := GNU LD (`ld.bfd`)
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toolchain-tools += gnu-objcopy
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toolchain-tool-name-gnu-objcopy := GNU `objcopy`
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toolchain-tools += gnu-objdump
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toolchain-tool-name-gnu-objdump := GNU `objdump`
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toolchain-tools += gnu-ar
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toolchain-tool-name-gnu-ar := GNU `ar`
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# Other tools
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toolchain-tools += generic-dtc
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toolchain-tool-name-generic-dtc := Device Tree Compiler (`dtc`)
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toolchain-tools += generic-poetry
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toolchain-tool-name-generic-poetry := Poetry (`poetry`)
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#
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# Assign tools to tool classes.
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#
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# Multifunctional tools, i.e. tools which can perform multiple roles in
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# a toolchain, may be specified in multiple tool class lists. For
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# example, a C compiler which can also perform the role of a linker may
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# be placed in both `toolchain-tools-cc` and `toolchain-tools-ld`.
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#
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# C-related tools
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toolchain-tools-cc := arm-clang llvm-clang gnu-gcc # C compilers
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toolchain-tools-cpp := arm-clang llvm-clang gnu-gcc # C preprocessors
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# Assembly-related tools
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toolchain-tools-as := arm-clang llvm-clang gnu-gcc # Assemblers
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# Linking and object-handling tools
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toolchain-tools-ld := arm-clang arm-link llvm-clang llvm-lld gnu-gcc gnu-ld # Linkers
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toolchain-tools-oc := arm-fromelf llvm-objcopy gnu-objcopy # Object copiers
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toolchain-tools-od := arm-fromelf llvm-objdump gnu-objdump # Object dumpers
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toolchain-tools-ar := arm-ar llvm-ar gnu-ar # Archivers
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# Other tools
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toolchain-tools-dtc := generic-dtc # Device tree compilers
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toolchain-tools-poetry := generic-poetry # Python Poetry package manager
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#
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# Helper functions to identify toolchain tools.
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#
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# The functions defined in this section return a tool identifier when
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# given a path to a binary. We generally check a help or version string
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# to more reliably identify tools than by looking at the path alone
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# (e.g. `gcc` on macOS is actually Apple Clang).
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#
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# Each tool-guessing function (`toolchain-guess-tool-$(tool)`) takes a
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# single argument giving the path to the tool to guess, and returns a
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# non-empty value if the tool corresponds to the tool identifier
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# `$(tool)`:
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#
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# $(call toolchain-guess-tool-llvm-clang,aarch64-none-elf-gcc) # <empty>
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# $(call toolchain-guess-tool-gnu-gcc,aarch64-none-elf-gcc) # <non-empty>
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#
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# The `toolchain-guess-tool` function tries to find the corresponding tool
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# identifier for a tool given its path. It takes two arguments:
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#
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# - $(1): a list of candidate tool identifiers to check
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# - $(2): the path to the tool to identify
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#
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# If any of the guess functions corresponding to candidate tool
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# identifiers return a non-empty value then the tool identifier of the
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# first function to do so is returned:
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#
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# $(call toolchain-guess-tool,gnu-gcc llvm-clang,armclang) # <empty>
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# $(call toolchain-guess-tool,gnu-gcc llvm-clang,clang-14) # llvm-clang
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# $(call toolchain-guess-tool,gnu-gcc llvm-clang,aarch64-none-elf-gcc-12) # gnu-gcc
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#
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# Tools are checked in the order that they are provided, and the first
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# match is returned.
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#
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# Arm Compiler for Embedded
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toolchain-guess-tool-arm-clang = $(shell $(1) --version 2>&1 </dev/null | grep -o "Tool: armclang")
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toolchain-guess-tool-arm-link = $(shell $(1) --help 2>&1 </dev/null | grep -o "Tool: armlink")
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toolchain-guess-tool-arm-fromelf = $(shell $(1) --help 2>&1 </dev/null | grep -o "Tool: fromelf")
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toolchain-guess-tool-arm-ar = $(shell $(1) --version 2>&1 </dev/null | grep -o "Tool: armar")
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# LLVM Project
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toolchain-guess-tool-llvm-clang = $(shell $(1) -v 2>&1 </dev/null | grep -o "clang version")
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toolchain-guess-tool-llvm-lld = $(shell $(1) --help 2>&1 </dev/null | grep -o "OVERVIEW: lld")
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toolchain-guess-tool-llvm-objcopy = $(shell $(1) --help 2>&1 </dev/null | grep -o "llvm-objcopy tool")
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toolchain-guess-tool-llvm-objdump = $(shell $(1) --help 2>&1 </dev/null | grep -o "llvm object file dumper")
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toolchain-guess-tool-llvm-ar = $(shell $(1) --help 2>&1 </dev/null | grep -o "LLVM Archiver")
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# GNU Compiler Collection & GNU Binary Utilities
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toolchain-guess-tool-gnu-gcc = $(shell $(1) -v 2>&1 </dev/null | grep -o "gcc version")
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toolchain-guess-tool-gnu-ld = $(shell $(1) -v 2>&1 </dev/null | grep -o "GNU ld")
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toolchain-guess-tool-gnu-objcopy = $(shell $(1) --version 2>&1 </dev/null | grep -o "GNU objcopy")
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toolchain-guess-tool-gnu-objdump = $(shell $(1) --version 2>&1 </dev/null | grep -o "GNU objdump")
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toolchain-guess-tool-gnu-ar = $(shell $(1) --version 2>&1 </dev/null | grep -o "GNU ar")
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# Other tools
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toolchain-guess-tool-generic-dtc = $(shell $(1) --version 2>&1 </dev/null | grep -o "Version: DTC")
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toolchain-guess-tool-generic-poetry = $(shell $(1) --version 2>&1 </dev/null)
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toolchain-guess-tool = $(if $(2),$(firstword $(foreach candidate,$(1),$\
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$(if $(call toolchain-guess-tool-$(candidate),$(2)),$(candidate)))))
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#
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# Get the index of the first valid tool path in a shell command.
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#
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# To support compiler wrappers like `ccache`, we need to be able to
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# robustly identify which part of a shell command is the wrapper and
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# which part is the wrapped.
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#
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# To do this, we iterate through each shell word in the string, query it
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# to see if it is one the tools we would expect to see, and return its
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# index.
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#
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# - $(1): A list of candidate tool identifiers to check.
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# - $(2): The shell command to parse.
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#
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toolchain-tool-program-index = $\
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$(call with,p:candidates p:command,$(1),$(2),$\
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$$(firstword $$(call shell-map,$\
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toolchain-tool-program-index.map,$\
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$$(command))))
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toolchain-tool-program-index.map = $(and $\
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$(call which,$(1)),$\
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$(call toolchain-guess-tool,$(candidates),$\
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$(call shell-quote,$(1))),$\
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$(2))
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#
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# Strip any program wrappers from a tool's shell command.
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#
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# This function removes any program wrappers, like `ccache`, from the
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# shell command of a tool.
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#
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# - $(1): A list of candidate tool identifiers to check.
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# - $(2): The shell command to parse.
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#
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toolchain-tool-program = $(call shell-slice,$(2),$\
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$(call toolchain-tool-program-index,$(1),$(2)))
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#
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# Extract the program wrapper from a tool's shell command.
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#
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# This function returns any program wrappers, like `ccache`, from the
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# shell command of a tool.
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#
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# - $(1): A list of candidate tool identifiers to check.
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# - $(2): The shell command to parse.
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#
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toolchain-tool-wrapper = $(call shell-slice,$(2),1,$\
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$(call toolchain-tool-program-index,$(1),$(2)))
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#
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# Warn the user that a tool could not be identified.
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#
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# Parameters:
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#
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# - $1: The toolchain that the tool belongs to.
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# - $2: The tool class that the tool belongs to.
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#
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define toolchain-warn-unrecognized
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$(warning )
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$(warning The configured $($(1)-name) $(toolchain-tool-class-name-$(2)) could not be identified:)
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$(warning )
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$(warning $(space) $($(1)-$(2)) ($($(1)-$(2)-origin)))
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$(warning )
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$(warning The following tools are supported:)
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$(warning )
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$(foreach tool,$(toolchain-tools-$(2)), \
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$(warning $(space) - $(toolchain-tool-name-$(tool))))
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$(warning )
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$(warning The build system will treat this $(toolchain-tool-class-name-$(2)) as $(toolchain-tool-name-$($(1)-$(2)-default-id)).)
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$(warning )
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endef
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#
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# Locate and identify tools belonging to each toolchain.
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#
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# Each tool class in each toolchain receives a variable of the form
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# `$(toolchain)-$(tool)` giving the associated path to the program. For
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# example:
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#
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# - `aarch64-ld` gives the linker for the AArch64 toolchain,
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# - `aarch32-oc` gives the object copier for the AArch32 toolchain, and
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# - `host-cc` gives the C compiler for the host toolchain.
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#
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# For each of these variables, if no program path is explicitly provided
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# by the parent Makefile then the C compiler is queried (if supported)
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# for its location.
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#
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# If the C compiler cannot provide the location (or the tool class *is*
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# the C compiler), then it is assigned a default value specific for that
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# toolchain.
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#
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toolchain-from-parameter = $($($(1)-$(2)-parameter))
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toolchain-from-cc-arm-clang-cpp = $(1)
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toolchain-from-cc-arm-clang-as = $(1)
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toolchain-from-cc-arm-clang-ld = # Fall back to `$(toolchain)-ld-default`
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toolchain-from-cc-arm-clang-oc = # Fall back to `$(toolchain)-oc-default`
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toolchain-from-cc-arm-clang-od = # Fall back to `$(toolchain)-od-default`
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toolchain-from-cc-arm-clang-ar = # Fall back to `$(toolchain)-ar-default`
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toolchain-from-cc-llvm-clang-cpp = $(1)
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toolchain-from-cc-llvm-clang-as = $(1)
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toolchain-from-cc-llvm-clang-ld = $(1)
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toolchain-from-cc-llvm-clang-oc = $(shell $(1) --print-prog-name llvm-objcopy 2>/dev/null)
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toolchain-from-cc-llvm-clang-od = $(shell $(1) --print-prog-name llvm-objdump 2>/dev/null)
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toolchain-from-cc-llvm-clang-ar = $(shell $(1) --print-prog-name llvm-ar 2>/dev/null)
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toolchain-from-cc-gnu-gcc-cpp = $(1)
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toolchain-from-cc-gnu-gcc-as = $(1)
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toolchain-from-cc-gnu-gcc-ld = $(1)
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toolchain-from-cc-gnu-gcc-oc = $(shell $(1) --print-prog-name objcopy 2>/dev/null)
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toolchain-from-cc-gnu-gcc-od = $(shell $(1) --print-prog-name objdump 2>/dev/null)
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toolchain-from-cc-gnu-gcc-ar = $(shell $(1) --print-prog-name ar 2>/dev/null)
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toolchain-from-cc = $(and $(filter-out cc,$(2)),$($(1)-cc),$\
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$(call toolchain-from-cc-$($(1)-cc-id)-$(2),$($(1)-cc)))
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toolchain-from-default = $(firstword $\
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$(foreach candidate,$($(1)-$(2)-default),$\
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$(if $(call which,$(candidate)),$(candidate))) $\
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$($(1)-$(2)-default))
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#
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# Compiler configuration for the correct ARCH
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#
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target-arch-aarch32-arm-clang := arm-arm-none-eabi
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target-arch-aarch64-arm-clang := aarch64-arm-none-eabi
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target-arch-aarch32-llvm-clang := arm-arm-none-eabi
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target-arch-aarch64-llvm-clang := aarch64-arm-none-elf
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target-flag-aarch32-arm-clang := -target $(target-arch-aarch32-arm-clang)
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target-flag-aarch64-arm-clang := -target $(target-arch-aarch64-arm-clang)
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target-flag-aarch32-llvm-clang := -target $(target-arch-aarch32-llvm-clang)
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target-flag-aarch64-llvm-clang := -target $(target-arch-aarch64-llvm-clang)
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# Prefixes a linker flag appropriately for the linker in use.
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#
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# Parameters:
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# - $1: A linker flag
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#
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toolchain-ld-prefix-gnu-gcc = $(addprefix -Xlinker ,$(1))
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toolchain-ld-prefix-gnu-ld = $(1)
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toolchain-ld-prefix-llvm-clang = $(addprefix -Xlinker ,$(1))
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toolchain-ld-prefix-llvm-lld = $(1)
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toolchain-ld-prefix-arm-clang = $(addprefix -Xlinker ,$(1))
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toolchain-ld-prefix-arm-link = $(1)
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#
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# Discover whether a linker supports any given option (passed in $(2))
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# Depending on which linker is in use and how exactly it is used (via a
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# wrapper or not) the discovery process is different for each one
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#
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# Parameters:
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# - $1: The ARCH prefix of the toolchain (eg TF-A's or the native one)
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# - $2: The flag to test
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# Returns the option with the wrapper's prefix (-Xlinker) if necessary
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#
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||
# Optionally works with lists of options, although granularity will be
|
||
# lost
|
||
#
|
||
|
||
# shorthand for the below helpers, assuming we're building TF-A
|
||
toolchain-ld-option = $(call toolchain-ld-option-$($(1)-ld-id),$(1),$(2))
|
||
toolchain-ld-option-gnu-gcc = $(if $\
|
||
$(shell $($(1)-ld) $(call toolchain-ld-prefix-gnu-gcc,$(2)) -Xlinker --help >/dev/null 2>&1 && echo 1),$\
|
||
$(call toolchain-ld-prefix-gnu-gcc,$(2)))
|
||
toolchain-ld-option-gnu-ld = $(shell $($(1)-ld) $(2) --help >/dev/null 2>&1 && $\
|
||
echo $(call escape-shell,$(2)))
|
||
|
||
toolchain-ld-option-llvm-clang = $(shell $($(1)-ld) $(target-flag-$(1)-llvm-clang) $\
|
||
$(call toolchain-ld-prefix-llvm-clang,$(2)) -Xlinker --help >/dev/null 2>&1 && $\
|
||
echo $(call escape-shell,$(call toolchain-ld-prefix-llvm-clang,$(2))))
|
||
toolchain-ld-option-llvm-lld = $(shell $($(1)-ld) $(2) --help >/dev/null 2>&1 && $\
|
||
echo $(call escape-shell,$(2)))
|
||
|
||
toolchain-ld-option-arm-clang = $(shell $($(1)-ld) $(target-flag-$(1)-arm-clang) $\
|
||
$(call toolchain-ld-prefix-arm-clang,$(2)) -Xlinker --help >/dev/null 2>&1 && $\
|
||
echo $(call escape-shell,$(call toolchain-ld-prefix-arm-clang,$(2))))
|
||
toolchain-ld-option-arm-link = $(shell $($(1)-ld) $(2) --help >/dev/null 2>&1 && $\
|
||
echo $(call escape-shell,$(2)))
|
||
|
||
#
|
||
# Configure a toolchain.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $1: The toolchain to configure.
|
||
#
|
||
# This function iterates over all tool classes and configures them for
|
||
# the provided toolchain. Toolchain tools are initialized lazily and
|
||
# on-demand based on the first read of the tool path or identifier
|
||
# variables.
|
||
#
|
||
|
||
define toolchain-configure
|
||
$$(foreach tool-class,$$(toolchain-tool-classes), \
|
||
$$(eval $$(call toolchain-configure-tool,$1,$$(tool-class))))
|
||
endef
|
||
|
||
#
|
||
# Configure a specific tool within a toolchain.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $1: The toolchain to configure.
|
||
# - $2: The tool class to configure.
|
||
#
|
||
|
||
define toolchain-configure-tool
|
||
$1-$2-configure = $\
|
||
$$(eval $$(call toolchain-determine-tool,$1,$2))
|
||
|
||
#
|
||
# When either of the following variables are read for the first
|
||
# time, the appropriate tool is determined and *both* variables
|
||
# are overwritten with their final values.
|
||
#
|
||
|
||
$1-$2 = $$($1-$2-configure)$$($1-$2)
|
||
$1-$2-id = $$($1-$2-configure)$$($1-$2-id)
|
||
endef
|
||
|
||
#
|
||
# Determines and identifies a tool.
|
||
#
|
||
# Parameters:
|
||
#
|
||
# - $1: The toolchain identifier.
|
||
# - $2: The tool class.
|
||
#
|
||
# Tool identification happens by reading the designated tool parameter
|
||
# to get the user-specified command for the tool (e.g. `CC` or `LD`). If
|
||
# no tool parameter is defined then try to derive the tool from the C
|
||
# compiler.
|
||
#
|
||
# If all else fails, fall back to the default command defined by the
|
||
# toolchain makefile.
|
||
#
|
||
|
||
define toolchain-determine-tool
|
||
#
|
||
# Try to determine the tool command by:
|
||
#
|
||
# 1. Using the user-specified value (if one is provided).
|
||
# 2. Otherwise, inferring a reasonable default by:
|
||
# a. Querying the C compiler, if available.
|
||
# b. Falling back to a hard-coded default, if specified.
|
||
# c. Giving up, and erroring out if the tool is mandatory.
|
||
#
|
||
|
||
$1-$2-from-parameter = $$(call toolchain-from-parameter,$1,$2)
|
||
$1-$2-from-cc = $$(call toolchain-from-cc,$1,$2)
|
||
$1-$2-from-default = $$(call toolchain-from-default,$1,$2)
|
||
|
||
ifneq ($$($1-$2-from-parameter),)
|
||
$1-$2-from := $$($1-$2-from-parameter)
|
||
$1-$2-origin := via `$$($1-$2-parameter)` parameter
|
||
else ifneq ($$($1-$2-from-cc),)
|
||
$1-$2-from := $$($1-$2-from-cc)
|
||
$1-$2-origin := inferred from C compiler
|
||
else ifneq ($$($1-$2-from-default),)
|
||
$1-$2-from := $$($1-$2-from-default)
|
||
$1-$2-origin := default
|
||
endif
|
||
|
||
#
|
||
# Sanitize the command for the shell by either escaping the
|
||
# entire string if it's a program name/path, or by expanding and
|
||
# escaping each shell word.
|
||
#
|
||
|
||
$1-$2 := $$(call shell-program,$$($1-$2-from))
|
||
|
||
$$(if $$(or $$($1-$2),$$($1-$2-optional)),,$\
|
||
$$(error no $$($1-name) $$(toolchain-tool-class-name-$2) configured))
|
||
|
||
$1-$2-id := $$(if $$($1-$2),$$(or $\
|
||
$$(call toolchain-guess-tool,$$\
|
||
$$(toolchain-tools-$2),$$($1-$2)),$\
|
||
$$(call toolchain-warn-unrecognized,$1,$2)$\
|
||
$$($1-$2-default-id)))
|
||
|
||
$1-$2-program := $$(call toolchain-tool-program,$\
|
||
$$($1-$2-id),$$($1-$2))
|
||
$1-$2-wrapper := $$(call toolchain-tool-wrapper,$\
|
||
$$($1-$2-id),$$($1-$2))
|
||
endef
|
||
|
||
$(foreach toolchain,$(toolchains), \
|
||
$(eval $(call toolchain-configure,$(toolchain))))
|
||
endif
|