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cmake: add the DaemonPlatform CMake framework
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‎cmake/DaemonPlatform/Architecture.cmake‎

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# Daemon BSD Source Code
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# Copyright (c) 2022, Daemon Developers
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the <organization> nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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################################################################################
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# Determine architecture
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################################################################################
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# When adding a new architecture, look at all the places ARCH is used
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try_compile(BUILD_RESULT
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"${CMAKE_BINARY_DIR}"
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"${CMAKE_CURRENT_LIST_DIR}/Architecture/Architecture.cpp"
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CMAKE_FLAGS CMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
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OUTPUT_VARIABLE BUILD_LOG
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)
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# Setting -Werror in CXXFLAGS would produce errors instead of warning
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# but that should not break the architecture detection,
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# so we only print a CMake warning there and use BUILD_LOG content to
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# detect unsupported platforms.
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# Catching compilation error is still useful, for example to detect
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# undefined types, missing header or things like that.
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# Setting USE_WERROR to ON doesn't print this warning.
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if (NOT BUILD_RESULT)
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message(WARNING
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"Failed to build Architecture.cpp\n"
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"Setting -Werror in CXXFLAGS can produce false positive errors\n"
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"${BUILD_LOG}"
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)
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endif()
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string(REGEX MATCH "DAEMON_ARCH_([a-zA-Z0-9_]+)" ARCH_DEFINE "${BUILD_LOG}")
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string(REPLACE "DAEMON_ARCH_" "" ARCH "${ARCH_DEFINE}")
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if (NOT ARCH)
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message(FATAL_ERROR
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"Missing DAEMON_ARCH, there is a mistake in Architecture.cpp\n"
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"${BUILD_LOG}"
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)
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else()
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set(ARCH_${ARCH} ON)
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if(ARCH_unsupported)
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message(FATAL_ERROR "Architecture not supported")
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endif()
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endif()
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message(STATUS "Detected architecture: ${ARCH}")
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add_definitions(-D${ARCH_DEFINE})
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# This string can be modified without breaking compatibility.
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daemon_add_buildinfo("char*" "DAEMON_ARCH_STRING" "\"${ARCH}\"")
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# Modifying NACL_ARCH breaks engine compatibility with nexe game binaries
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# since NACL_ARCH contributes to the nexe file name.
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set(NACL_ARCH "${ARCH}")
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if (LINUX OR FREEBSD)
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set(ARMHF_USAGE arm64 armel)
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if (ARCH IN_LIST ARMHF_USAGE)
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# Load 32-bit armhf nexe on 64-bit arm64 engine on Linux with multiarch.
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# The nexe is system agnostic so there should be no difference with armel.
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set(NACL_ARCH "armhf")
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endif()
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elseif(APPLE)
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if ("${ARCH}" STREQUAL arm64)
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# You can get emulated NaCl going like this:
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# cp external_deps/macos-amd64-default_10/{nacl_loader,irt_core-amd64.nexe} build/
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set(NACL_ARCH "amd64")
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endif()
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endif()
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daemon_add_buildinfo("char*" "DAEMON_NACL_ARCH_STRING" "\"${NACL_ARCH}\"")
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option(USE_ARCH_INTRINSICS "Enable custom code using intrinsics functions or asm declarations" ON)
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mark_as_advanced(USE_ARCH_INTRINSICS)
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macro(set_arch_intrinsics name)
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if (USE_ARCH_INTRINSICS)
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message(STATUS "Enabling ${name} architecture intrinsics")
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add_definitions(-DDAEMON_USE_ARCH_INTRINSICS_${name}=1)
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else()
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message(STATUS "Disabling ${name} architecture intrinsics")
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endif()
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endmacro()
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if (USE_ARCH_INTRINSICS)
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add_definitions(-DDAEMON_USE_ARCH_INTRINSICS=1)
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endif()
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set_arch_intrinsics(${ARCH})
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set(amd64_PARENT "i686")
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set(arm64_PARENT "armhf")
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if (${ARCH}_PARENT)
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set_arch_intrinsics(${${ARCH}_PARENT})
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endif()

‎cmake/DaemonPlatform/Architecture/Architecture.cpp‎

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/*
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===========================================================================
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Daemon BSD Source Code
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Copyright (c) 2022, Daemon Developers
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the Daemon developers nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL DAEMON DEVELOPERS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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===========================================================================
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*/
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/* The qprocessordetection.h file doesn't detect endianness for some
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platforms including ppc64, but we know how to do it for them. */
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#include <stdint.h>
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/* This source file includes qprocessordetection.h from Qt:
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- https://github.com/qt/qtbase/blob/dev/src/corelib/global/qprocessordetection.h
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https://raw.githubusercontent.com/qt/qtbase/dev/src/corelib/global/qprocessordetection.h
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Always update by downloading new version from Qt, do not edit by hand.
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This source file and the qprocessordetection.h header do not contribute to the
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produced engine and game binaries in any way that can be subject to copyright. */
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#include "qprocessordetection.h"
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/* The architecture names are loosely inspired by Debian conventions:
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https://wiki.debian.org/ArchitectureSpecificsMemo
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Except we don't have the same technical debt so we don't have
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to name i686 as i386 for backward compatibility purpose neither
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care of platform name variants that are meant to distinguish
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platform variants we cannot support anyway. */
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/* PNaCl virtual machines. */
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#if defined(__native_client__)
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#pragma message("DAEMON_ARCH_nacl")
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/* Wasm virtual machines, work in progress. */
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#elif defined(Q_PROCESSOR_WASM)
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#pragma message("DAEMON_ARCH_wasm")
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/* Devices like:
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- IBM PC compatibles and derivatives,
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- Apple Intel-based mac,
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- Steam Deck, Atari VCS consoles… */
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#elif defined(Q_PROCESSOR_X86_64)
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#pragma message("DAEMON_ARCH_amd64")
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#elif defined(Q_PROCESSOR_X86_32)
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// Assume at least i686. Detecting older revisions would be unlikely to work here
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// because the revisions are likely configured by flags, but this file is "compiled"
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// without most command-line flags.
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#pragma message("DAEMON_ARCH_i686")
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/* Devices like:
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- Raspberry Pi,
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- Apple M1-based mac,
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- Android phones and tablets… */
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#elif defined(Q_PROCESSOR_ARM_64)
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#pragma message("DAEMON_ARCH_arm64")
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#elif defined(Q_PROCESSOR_ARM_32) && defined(__ARM_PCS_VFP)
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#pragma message("DAEMON_ARCH_armhf")
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#elif defined(Q_PROCESSOR_ARM_32) && !defined(__ARM_PCS_VFP)
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#pragma message("DAEMON_ARCH_armel")
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/* Devices like:
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- Raptor Computing Systems Talos, Blackbird… */
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#elif defined(Q_PROCESSOR_POWER_64) && Q_BYTE_ORDER == Q_BIG_ENDIAN
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#pragma message("DAEMON_ARCH_ppc64")
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#elif defined(Q_PROCESSOR_POWER_64) && Q_BYTE_ORDER == Q_LITTLE_ENDIAN
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#pragma message("DAEMON_ARCH_ppc64el")
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/* 32-bit MIPS devices. */
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#elif defined(Q_PROCESSOR_MIPS) && Q_BYTE_ORDER == Q_LITTLE_ENDIAN
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#pragma message("DAEMON_ARCH_mipsel")
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/* Devices like:
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- SiFive HiFive Unmatched, Horse Creek… */
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#elif defined(Q_PROCESSOR_RISCV_64)
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#pragma message("DAEMON_ARCH_riscv64")
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#else
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#pragma message("DAEMON_ARCH_unknown")
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#endif
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// Make the compilation succeeds if architecture is supported.
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int main(int argc, char** argv) {
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return 0;
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}

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