Xaymar
dfe1aab2ea
We can use some of CMakes built-in systems to ease the required workflow for the whole toolchain. This may eventually allow us to do a single click system where a developer does not need to do anything to get started. If Google can do this (even if slightly scuffed), so can we.
221 lines
7.8 KiB
CMake
221 lines
7.8 KiB
CMake
# Copyright (C) 2023-2024 Michael Fabian 'Xaymar' Dirks
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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cmake_minimum_required(VERSION 3.30...4.0)
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include_guard(GLOBAL)
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if((CMAKE_GENERATOR STREQUAL "Ninja") OR (CMAKE_GENERATOR STREQUAL "Ninja Multi-Config"))
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include("${CMAKE_CURRENT_LIST_DIR}/../generators/ninja.cmake")
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endif()
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list(APPEND CMAKE_MESSAGE_INDENT "[LLVM-ARM] ")
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set(_VERSION "18.1.3")
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set(_FILE "llvm-arm-${CMAKE_HOST_SYSTEM_NAME}-${CMAKE_HOST_SYSTEM_PROCESSOR}")
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if(CMAKE_HOST_SYSTEM_NAME MATCHES "Windows") # Windows
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set(_FILENAME "LLVM-ET-Arm-${_VERSION}-Windows-x86_64")
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set(_FILEEXT "zip")
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elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin") # Darwin
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set(_FILENAME "LLVM-ET-Arm-${_VERSION}-Darwin")
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set(_FILEEXT "dmg")
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else() # Generic Unix-like
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set(_FILEEXT "tar.xz")
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if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "(x86)|(X86)|(amd64)|(AMD64)")
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set(_FILENAME "LLVM-ET-Arm-${_VERSION}-Linux-x86_64")
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else()
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set(_FILENAME "LLVM-ET-Arm-${_VERSION}-Linux-AArch64")
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endif()
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endif()
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# Very hacky way to get CMake to behave like a normal makefile generator, instead of a mentally challenged makefile generator.
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if(TRUE) # Check if we've already installed one of these,
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if(WIN32)
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set(TEMP "$ENV{TEMP}")
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else()
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set(TEMP "$ENV{TMPDIR}")
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endif()
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set(_PATH "${TEMP}/cmake/llvm-arm/${_VERSION}")
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if(EXISTS "${_PATH}")
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file(READ "${_PATH}" _DIR)
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if (NOT EXISTS "${_DIR}")
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file(REMOVE "${_PATH}")
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unset(_DIR)
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endif()
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endif()
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endif()
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if((NOT _DIR) OR (EXISTS "${PROJECT_BINARY_DIR}/toolchain/${_FILE}.version"))
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# Check if the version is what we expect.
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if(EXISTS "${PROJECT_BINARY_DIR}/toolchain/${_FILE}.version")
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file(READ "${PROJECT_BINARY_DIR}/toolchain/${_FILE}.version" _VERSION_STORED)
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endif()
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if((NOT _VERSION_STORED) OR (_VERSION_STORED VERSION_LESS _VERSION))
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message(STATUS "Updating... (${_VERSION_STORED} < ${_VERSION})")
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# Download the appropriate package from https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm
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#- Grab the latest hash from the remote.
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set(_HASH_FILE "${PROJECT_BINARY_DIR}/toolchain/${_FILE}.sha256")
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file(DOWNLOAD
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"https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm/releases/download/release-${_VERSION}/${_FILENAME}.${_FILEEXT}.sha256"
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"${_HASH_FILE}"
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)
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file(READ "${_HASH_FILE}" _DOWNLOAD_SHA256)
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string(REGEX MATCH "[0-9a-fA-F]+" _DOWNLOAD_SHA256 "${_DOWNLOAD_SHA256}")
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file(REMOVE "${_HASH_FILE}")
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#- Download the latest toolchain
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set(_PACKAGE_FILE "${PROJECT_BINARY_DIR}/toolchain/${_FILE}.${_FILEEXT}")
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file(DOWNLOAD
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"https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm/releases/download/release-${_VERSION}/${_FILENAME}.${_FILEEXT}"
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"${_PACKAGE_FILE}"
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EXPECTED_HASH SHA256=${_DOWNLOAD_SHA256}
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)
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#- Extract the contents
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file(ARCHIVE_EXTRACT
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INPUT "${_PACKAGE_FILE}"
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DESTINATION "${PROJECT_BINARY_DIR}/toolchain/"
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)
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#file(REMOVE "${_PACKAGE_FILE}")
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file(WRITE "${PROJECT_BINARY_DIR}/toolchain/${_FILE}.version" "${_VERSION}")
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endif()
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# Update the virtual link
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file(WRITE "${_PATH}" "${PROJECT_BINARY_DIR}/toolchain/${_FILENAME}/")
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set(_LLVM_TOOLCHAIN "${PROJECT_BINARY_DIR}/toolchain/${_FILENAME}/")
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else()
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set(_LLVM_TOOLCHAIN "${_DIR}")
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endif()
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list(APPEND CMAKE_PREFIX_PATH
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"${_LLVM_TOOLCHAIN}/bin"
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"${_LLVM_TOOLCHAIN}"
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)
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# Find necessary programs.
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# - AR
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find_program(
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CMAKE_AR
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NAMES
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llvm-ar
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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# - Library Randomizer
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find_program(
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CMAKE_RANLIB
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NAMES
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llvm-ranlib
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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# - Linker
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find_program(
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CMAKE_LINKER
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NAMES
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ld.lld
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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# - Object Copy
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find_program(
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CMAKE_OBJCOPY
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NAMES
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llvm-objcopy
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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# - Object Dump
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find_program(
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CMAKE_OBJDUMP
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NAMES
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llvm-objdump
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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# - Strip Debug Info
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find_program(
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CMAKE_STRIP
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NAMES
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llvm-strip
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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# - C Compiler
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find_program(
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CMAKE_C_COMPILER
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NAMES
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clang
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clang++
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clang-cpp
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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set(CMAKE_C_COMPILER_AR "${CMAKE_AR}" CACHE STRING "" FORCE)
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#set(CMAKE_C_COMPILER_CLANG_SCAN_DEPS "NOT-FOUND" CACHE STRING "" FORCE)
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set(CMAKE_C_COMPILER_RANLIB "${CMAKE_RANLIB}" CACHE STRING "" FORCE)
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set(CMAKE_C_LINKER "${CMAKE_LINKER}" CACHE STRING "" FORCE)
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set(CMAKE_C_LINKER_ID "LDD" CACHE STRING "" FORCE)
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set(CMAKE_C_LINKER_FRONTEND_VARIANT "LLD" CACHE STRING "" FORCE)
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# - C++ Compiler
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find_program(
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CMAKE_CXX_COMPILER
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NAMES
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clang++
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clang-cpp
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clang
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PATHS
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"${_LLVM_TOOLCHAIN}/bin"
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NO_DEFAULT_PATH NO_PACKAGE_ROOT_PATH NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH NO_SYSTEM_ENVIRONMENT_PATH NO_CMAKE_INSTALL_PREFIX NO_CMAKE_FIND_ROOT_PATH
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)
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set(CMAKE_CXX_COMPILER_AR "${CMAKE_AR}" CACHE STRING "" FORCE)
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#set(CMAKE_CXX_COMPILER_CLANG_SCAN_DEPS "NOT-FOUND" CACHE STRING "" FORCE)
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set(CMAKE_CXX_SCAN_FOR_MODULES OFF CACHE BOOL "" FORCE)
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set(CMAKE_CXX_COMPILER_RANLIB "${CMAKE_RANLIB}" CACHE STRING "" FORCE)
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set(CMAKE_CXX_LINKER "${CMAKE_C_LINKER}" CACHE STRING "" FORCE)
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set(CMAKE_CXX_LINKER_ID "LLD" CACHE STRING "" FORCE)
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set(CMAKE_CXX_LINKER_FRONTEND_VARIANT "LLD" CACHE STRING "" FORCE)
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# - Assembly Compiler
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set(CMAKE_ASM_COMPILER "${CMAKE_C_COMPILER}" CACHE STRING "" FORCE)
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set(CMAKE_ASM_COMPILER_AR "${CMAKE_AR}" CACHE STRING "" FORCE)
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#set(CMAKE_ASM_COMPILER_CLANG_SCAN_DEPS "NOT-FOUND" CACHE STRING "" FORCE)
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set(CMAKE_ASM_COMPILER_RANLIB "${CMAKE_RANLIB}" CACHE STRING "" FORCE)
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set(CMAKE_ASM_LINKER "${CMAKE_C_LINKER}" CACHE STRING "" FORCE)
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set(CMAKE_ASM_LINKER_ID "LLD" CACHE STRING "" FORCE)
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set(CMAKE_ASM_LINKER_FRONTEND_VARIANT "LLD" CACHE STRING "" FORCE)
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#mark_as_advanced(CLANG_C_COMPILER CLANG_CPP_COMPILER CLANG__AR CLANG__LD_LDD)
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set(CMAKE_EXE_LINKER_FLAGS_INIT "-fuse-ld=\"${CMAKE_C_LINKER}\"")
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set(CMAKE_STATIC_LINKER_FLAGS_INIT "-fuse-ld=\"${CMAKE_C_LINKER}\"")
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set(CMAKE_MODULE_LINKER_FLAGS_INIT "-fuse-ld=\"${CMAKE_C_LINKER}\"")
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set(CMAKE_SHARED_LINKER_FLAGS_INIT "-fuse-ld=\"${CMAKE_C_LINKER}\"")
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execute_process(
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COMMAND "${CMAKE_C_COMPILER}" "--version"
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OUTPUT_VARIABLE _VERSION_INSTALLED
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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string(REGEX MATCH "[0-9]+\.[0-9]+\.[0-9]+" _VERSION_INSTALLED "${_VERSION_INSTALLED}")
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message(STATUS "v${_VERSION_INSTALLED}")
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list(POP_BACK CMAKE_MESSAGE_INDENT)
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