path: root/eng/native/configureplatform.cmake

include(${CMAKE_CURRENT_LIST_DIR}/functions.cmake)

# If set, indicates that this is not an officially supported release.
# Release branches should set this to false.
set(PRERELEASE 0)

#----------------------------------------
# Detect and set platform variable names
#     - for non-windows build platform & architecture is detected using inbuilt CMAKE variables and cross target component configure
#     - for windows we use the passed in parameter to CMAKE to determine build arch
#----------------------------------------
set(CLR_CMAKE_HOST_OS ${CMAKE_SYSTEM_NAME})
if(CLR_CMAKE_HOST_OS STREQUAL Linux)
    set(CLR_CMAKE_HOST_UNIX 1)
    if(CLR_CROSS_COMPONENTS_BUILD)
        # CMAKE_HOST_SYSTEM_PROCESSOR returns the value of `uname -p` on host.
        if(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL x86_64 OR CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL amd64)
            if(CLR_CMAKE_TARGET_ARCH STREQUAL "arm" OR CLR_CMAKE_TARGET_ARCH STREQUAL "armel")
                if(CMAKE_CROSSCOMPILING)
                    set(CLR_CMAKE_HOST_UNIX_X86 1)
                else()
                    set(CLR_CMAKE_HOST_UNIX_AMD64 1)
                endif()
            else()
                set(CLR_CMAKE_HOST_UNIX_AMD64 1)
            endif()
        elseif(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL i686)
            set(CLR_CMAKE_HOST_UNIX_X86 1)
        else()
            clr_unknown_arch()
        endif()
    else()
        # CMAKE_SYSTEM_PROCESSOR returns the value of `uname -p` on target.
        # For the AMD/Intel 64bit architecture two different strings are common.
        # Linux and Darwin identify it as "x86_64" while FreeBSD and netbsd uses the
        # "amd64" string. Accept either of the two here.
        if(CMAKE_SYSTEM_PROCESSOR STREQUAL x86_64 OR CMAKE_SYSTEM_PROCESSOR STREQUAL amd64)
            set(CLR_CMAKE_HOST_UNIX_AMD64 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL armv7l OR CMAKE_SYSTEM_PROCESSOR STREQUAL armv8l)
            set(CLR_CMAKE_HOST_UNIX_ARM 1)
            set(CLR_CMAKE_HOST_UNIX_ARMV7L 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL arm OR CMAKE_SYSTEM_PROCESSOR STREQUAL armv7-a)
            set(CLR_CMAKE_HOST_UNIX_ARM 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL armv6 OR CMAKE_SYSTEM_PROCESSOR STREQUAL armv6l)
            set(CLR_CMAKE_HOST_UNIX_ARMV6 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL aarch64 OR CMAKE_SYSTEM_PROCESSOR STREQUAL arm64)
            set(CLR_CMAKE_HOST_UNIX_ARM64 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL loongarch64)
            set(CLR_CMAKE_HOST_UNIX_LOONGARCH64 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL riscv64)
            set(CLR_CMAKE_HOST_UNIX_RISCV64 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL i686 OR CMAKE_SYSTEM_PROCESSOR STREQUAL x86)
            set(CLR_CMAKE_HOST_UNIX_X86 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL s390x)
            set(CLR_CMAKE_HOST_UNIX_S390X 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL ppc64le)
            set(CLR_CMAKE_HOST_UNIX_POWERPC64 1)
        elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL mips64)
            set(CLR_CMAKE_HOST_UNIX_MIPS64 1)
        else()
            clr_unknown_arch()
        endif()
    endif()
    set(CLR_CMAKE_HOST_LINUX 1)

    # Detect Linux ID
    set(LINUX_ID_FILE "/etc/os-release")
    if(CMAKE_CROSSCOMPILING)
        set(LINUX_ID_FILE "${CMAKE_SYSROOT}${LINUX_ID_FILE}")
    endif()

    if(EXISTS ${LINUX_ID_FILE})
        execute_process(
            COMMAND bash -c "source ${LINUX_ID_FILE} && echo \$ID"
            OUTPUT_VARIABLE CLR_CMAKE_LINUX_ID
            OUTPUT_STRIP_TRAILING_WHITESPACE)

        execute_process(
            COMMAND bash -c "if strings \"${CMAKE_SYSROOT}/usr/bin/ldd\" 2>&1 | grep -q musl; then echo musl; fi"
            OUTPUT_VARIABLE CLR_CMAKE_LINUX_MUSL
            OUTPUT_STRIP_TRAILING_WHITESPACE)
    endif()

    if(DEFINED CLR_CMAKE_LINUX_ID)
        if(CLR_CMAKE_LINUX_ID STREQUAL tizen)
            set(CLR_CMAKE_TARGET_TIZEN_LINUX 1)
            set(CLR_CMAKE_HOST_OS ${CLR_CMAKE_LINUX_ID})
        elseif(CLR_CMAKE_LINUX_ID STREQUAL alpine)
            set(CLR_CMAKE_HOST_ALPINE_LINUX 1)
            set(CLR_CMAKE_HOST_OS ${CLR_CMAKE_LINUX_ID})
        endif()

        if(CLR_CMAKE_LINUX_MUSL STREQUAL musl)
            set(CLR_CMAKE_HOST_LINUX_MUSL 1)
        endif()
    endif(DEFINED CLR_CMAKE_LINUX_ID)
endif(CLR_CMAKE_HOST_OS STREQUAL Linux)

if(CLR_CMAKE_HOST_OS STREQUAL Darwin)
    set(CLR_CMAKE_HOST_UNIX 1)

    if(CMAKE_SYSTEM_VARIANT STREQUAL MacCatalyst)
      set(CLR_CMAKE_HOST_MACCATALYST 1)
    else()
      set(CLR_CMAKE_HOST_OSX 1)
    endif(CMAKE_SYSTEM_VARIANT STREQUAL MacCatalyst)

    if(CMAKE_OSX_ARCHITECTURES STREQUAL x86_64)
        set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    elseif(CMAKE_OSX_ARCHITECTURES STREQUAL arm64)
        set(CLR_CMAKE_HOST_UNIX_ARM64 1)
    else()
        clr_unknown_arch()
    endif()
    set(CMAKE_ASM_COMPILE_OBJECT "${CMAKE_C_COMPILER} <FLAGS> <DEFINES> <INCLUDES> -o <OBJECT> -c <SOURCE>")
endif(CLR_CMAKE_HOST_OS STREQUAL Darwin)

if(CLR_CMAKE_HOST_OS STREQUAL iOS OR CLR_CMAKE_HOST_OS STREQUAL iOSSimulator)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_IOS 1)
    if(CMAKE_OSX_ARCHITECTURES MATCHES "x86_64")
        set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    elseif(CMAKE_OSX_ARCHITECTURES MATCHES "i386")
        set(CLR_CMAKE_HOST_UNIX_X86 1)
    elseif(CMAKE_OSX_ARCHITECTURES MATCHES "armv7")
        set(CLR_CMAKE_HOST_UNIX_ARM 1)
    elseif(CMAKE_OSX_ARCHITECTURES MATCHES "arm64")
        set(CLR_CMAKE_HOST_UNIX_ARM64 1)
    else()
        clr_unknown_arch()
    endif()
endif(CLR_CMAKE_HOST_OS STREQUAL iOS OR CLR_CMAKE_HOST_OS STREQUAL iOSSimulator)

if(CLR_CMAKE_HOST_OS STREQUAL tvOS OR CLR_CMAKE_HOST_OS STREQUAL tvOSSimulator)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_TVOS 1)
    if(CMAKE_OSX_ARCHITECTURES MATCHES "x86_64")
        set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    elseif(CMAKE_OSX_ARCHITECTURES MATCHES "arm64")
        set(CLR_CMAKE_HOST_UNIX_ARM64 1)
    else()
        clr_unknown_arch()
    endif()
endif(CLR_CMAKE_HOST_OS STREQUAL tvOS OR CLR_CMAKE_HOST_OS STREQUAL tvOSSimulator)

if(CLR_CMAKE_HOST_OS STREQUAL Android)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_LINUX 1)
    set(CLR_CMAKE_HOST_ANDROID 1)
    if(CMAKE_SYSTEM_PROCESSOR STREQUAL x86_64)
        set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL armv7-a)
        set(CLR_CMAKE_HOST_UNIX_ARM 1)
    elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL aarch64)
        set(CLR_CMAKE_HOST_UNIX_ARM64 1)
    elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL i686)
        set(CLR_CMAKE_HOST_UNIX_X86 1)
    else()
        clr_unknown_arch()
    endif()
endif(CLR_CMAKE_HOST_OS STREQUAL Android)

if(CLR_CMAKE_HOST_OS STREQUAL FreeBSD)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    set(CLR_CMAKE_HOST_FREEBSD 1)
endif(CLR_CMAKE_HOST_OS STREQUAL FreeBSD)

if(CLR_CMAKE_HOST_OS STREQUAL OpenBSD)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    set(CLR_CMAKE_HOST_OPENBSD 1)
endif(CLR_CMAKE_HOST_OS STREQUAL OpenBSD)

if(CLR_CMAKE_HOST_OS STREQUAL NetBSD)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_UNIX_AMD64 1)
    set(CLR_CMAKE_HOST_NETBSD 1)
endif(CLR_CMAKE_HOST_OS STREQUAL NetBSD)

if(CLR_CMAKE_HOST_OS STREQUAL SunOS)
    set(CLR_CMAKE_HOST_UNIX 1)
    EXECUTE_PROCESS(
        COMMAND isainfo -n
        OUTPUT_VARIABLE SUNOS_NATIVE_INSTRUCTION_SET)

    if(SUNOS_NATIVE_INSTRUCTION_SET MATCHES "amd64" OR CMAKE_CROSSCOMPILING)
        set(CLR_CMAKE_HOST_UNIX_AMD64 1)
        set(CMAKE_SYSTEM_PROCESSOR "amd64")
    else()
        clr_unknown_arch()
    endif()

    EXECUTE_PROCESS(
        COMMAND uname -o
        OUTPUT_VARIABLE SUNOS_KERNEL_KIND
        ERROR_QUIET)

    set(CLR_CMAKE_HOST_SUNOS 1)
    if(SUNOS_KERNEL_KIND STREQUAL illumos OR CMAKE_CROSSCOMPILING)
        set(CLR_CMAKE_HOST_OS_ILLUMOS 1)
    else(SUNOS_KERNEL_KIND STREQUAL illumos OR CMAKE_CROSSCOMPILING)
        set(CLR_CMAKE_HOST_OS_SOLARIS 1)
    endif(SUNOS_KERNEL_KIND STREQUAL illumos OR CMAKE_CROSSCOMPILING)
endif(CLR_CMAKE_HOST_OS STREQUAL SunOS)

if(CLR_CMAKE_HOST_OS STREQUAL Windows)
    set(CLR_CMAKE_HOST_OS windows)
    set(CLR_CMAKE_HOST_WIN32 1)
endif(CLR_CMAKE_HOST_OS STREQUAL Windows)

if(CLR_CMAKE_HOST_OS STREQUAL Emscripten)
    set(CLR_CMAKE_HOST_UNIX 1)
    set(CLR_CMAKE_HOST_BROWSER 1)
endif(CLR_CMAKE_HOST_OS STREQUAL Emscripten)

#--------------------------------------------
# This repo builds two set of binaries
# 1. binaries which execute on target arch machine
#        - for such binaries host architecture & target architecture are same
#        - eg. coreclr.dll
# 2. binaries which execute on host machine but target another architecture
#        - host architecture is different from target architecture
#        - eg. crossgen.exe - runs on x64 machine and generates nis targeting arm64
#        - for complete list of such binaries refer to file crosscomponents.cmake
#-------------------------------------------------------------
# Set HOST architecture variables
if(CLR_CMAKE_HOST_UNIX_ARM)
    set(CLR_CMAKE_HOST_ARCH_ARM 1)
    set(CLR_CMAKE_HOST_ARCH "arm")

    if(CLR_CMAKE_HOST_UNIX_ARMV7L)
        set(CLR_CMAKE_HOST_ARCH_ARMV7L 1)
    endif()
elseif(CLR_CMAKE_HOST_UNIX_ARMV6)
    set(CLR_CMAKE_HOST_ARCH_ARMV6 1)
    set(CLR_CMAKE_HOST_ARCH "armv6")

    if(CLR_CMAKE_HOST_UNIX_ARMV6L)
        set(CLR_CMAKE_HOST_ARCH_ARMV6L 1)
    endif()
elseif(CLR_CMAKE_HOST_UNIX_ARM64)
    set(CLR_CMAKE_HOST_ARCH_ARM64 1)
    set(CLR_CMAKE_HOST_ARCH "arm64")
elseif(CLR_CMAKE_HOST_UNIX_LOONGARCH64)
    set(CLR_CMAKE_HOST_ARCH_LOONGARCH64 1)
    set(CLR_CMAKE_HOST_ARCH "loongarch64")
elseif(CLR_CMAKE_HOST_UNIX_RISCV64)
    set(CLR_CMAKE_HOST_ARCH_RISCV64 1)
    set(CLR_CMAKE_HOST_ARCH "riscv64")
elseif(CLR_CMAKE_HOST_UNIX_AMD64)
    set(CLR_CMAKE_HOST_ARCH_AMD64 1)
    set(CLR_CMAKE_HOST_ARCH "x64")
elseif(CLR_CMAKE_HOST_UNIX_X86)
    set(CLR_CMAKE_HOST_ARCH_I386 1)
    set(CLR_CMAKE_HOST_ARCH "x86")
elseif(CLR_CMAKE_HOST_UNIX_S390X)
    set(CLR_CMAKE_HOST_ARCH_S390X 1)
    set(CLR_CMAKE_HOST_ARCH "s390x")
elseif(CLR_CMAKE_HOST_UNIX_POWERPC64)
    set(CLR_CMAKE_HOST_ARCH_POWERPC64 1)
    set(CLR_CMAKE_HOST_ARCH "ppc64le")
elseif(CLR_CMAKE_HOST_BROWSER)
    set(CLR_CMAKE_HOST_ARCH_WASM 1)
    set(CLR_CMAKE_HOST_ARCH "wasm")
elseif(CLR_CMAKE_HOST_UNIX_MIPS64)
    set(CLR_CMAKE_HOST_ARCH_MIPS64 1)
    set(CLR_CMAKE_HOST_ARCH "mips64")
elseif(WIN32)
    # CLR_CMAKE_HOST_ARCH is passed in as param to cmake
    if (CLR_CMAKE_HOST_ARCH STREQUAL x64)
        set(CLR_CMAKE_HOST_ARCH_AMD64 1)
    elseif(CLR_CMAKE_HOST_ARCH STREQUAL x86)
        set(CLR_CMAKE_HOST_ARCH_I386 1)
    elseif(CLR_CMAKE_HOST_ARCH STREQUAL arm)
        set(CLR_CMAKE_HOST_ARCH_ARM 1)
    elseif(CLR_CMAKE_HOST_ARCH STREQUAL arm64)
        set(CLR_CMAKE_HOST_ARCH_ARM64 1)
    else()
        clr_unknown_arch()
    endif()
endif()

# Set TARGET architecture variables
# Target arch will be a cmake param (optional) for both windows as well as non-windows build
# if target arch is not specified then host & target are same
if(NOT DEFINED CLR_CMAKE_TARGET_ARCH OR CLR_CMAKE_TARGET_ARCH STREQUAL "" )
  set(CLR_CMAKE_TARGET_ARCH ${CLR_CMAKE_HOST_ARCH})

  # This is required for "arm" targets (CMAKE_SYSTEM_PROCESSOR "armv7l"),
  # for which this flag otherwise won't be set up below
  if (CLR_CMAKE_HOST_ARCH_ARMV7L)
    set(CLR_CMAKE_TARGET_ARCH_ARMV7L 1)
  endif()
endif()

# Set target architecture variables
if (CLR_CMAKE_TARGET_ARCH STREQUAL x64)
    set(CLR_CMAKE_TARGET_ARCH_AMD64 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL x86)
    set(CLR_CMAKE_TARGET_ARCH_I386 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL arm64)
    set(CLR_CMAKE_TARGET_ARCH_ARM64 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL loongarch64)
    set(CLR_CMAKE_TARGET_ARCH_LOONGARCH64 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL riscv64)
    set(CLR_CMAKE_TARGET_ARCH_RISCV64 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL arm)
    set(CLR_CMAKE_TARGET_ARCH_ARM 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL armv6)
    set(CLR_CMAKE_TARGET_ARCH_ARMV6 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL armel)
    set(CLR_CMAKE_TARGET_ARCH_ARM 1)
    set(CLR_CMAKE_TARGET_ARCH_ARMV7L 1)
    set(ARM_SOFTFP 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL s390x)
    set(CLR_CMAKE_TARGET_ARCH_S390X 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL ppc64le)
    set(CLR_CMAKE_TARGET_ARCH_POWERPC64 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL wasm)
    set(CLR_CMAKE_TARGET_ARCH_WASM 1)
elseif(CLR_CMAKE_TARGET_ARCH STREQUAL mips64)
    set(CLR_CMAKE_TARGET_ARCH_MIPS64 1)
else()
    clr_unknown_arch()
endif()

# Set TARGET architecture variables
# Target os will be a cmake param (optional) for both windows as well as non-windows build
# if target os is not specified then host & target os are same
if (NOT DEFINED CLR_CMAKE_TARGET_OS OR CLR_CMAKE_TARGET_OS STREQUAL "" )
  set(CLR_CMAKE_TARGET_OS ${CLR_CMAKE_HOST_OS})
endif()

if(CLR_CMAKE_TARGET_OS STREQUAL Linux)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_LINUX 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL Linux)

if(CLR_CMAKE_HOST_LINUX_MUSL)
    set(CLR_CMAKE_TARGET_LINUX_MUSL 1)
endif(CLR_CMAKE_HOST_LINUX_MUSL)

if(CLR_CMAKE_TARGET_OS STREQUAL tizen)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_LINUX 1)
    set(CLR_CMAKE_TARGET_TIZEN_LINUX 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL tizen)

if(CLR_CMAKE_TARGET_OS STREQUAL alpine)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_LINUX 1)
    set(CLR_CMAKE_TARGET_ALPINE_LINUX 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL alpine)

if(CLR_CMAKE_TARGET_OS STREQUAL Android)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_LINUX 1)
    set(CLR_CMAKE_TARGET_ANDROID 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL Android)

if(CLR_CMAKE_TARGET_OS STREQUAL Darwin)
    set(CLR_CMAKE_TARGET_UNIX 1)

    if(CMAKE_SYSTEM_VARIANT STREQUAL MacCatalyst)
        set(CLR_CMAKE_TARGET_MACCATALYST 1)
    else()
        set(CLR_CMAKE_TARGET_OSX 1)
    endif(CMAKE_SYSTEM_VARIANT STREQUAL MacCatalyst)
endif(CLR_CMAKE_TARGET_OS STREQUAL Darwin)

if(CLR_CMAKE_TARGET_OS STREQUAL iOS OR CLR_CMAKE_TARGET_OS STREQUAL iOSSimulator)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_IOS 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL iOS OR CLR_CMAKE_TARGET_OS STREQUAL iOSSimulator)

if(CLR_CMAKE_TARGET_OS STREQUAL tvOS OR CLR_CMAKE_TARGET_OS STREQUAL tvOSSimulator)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_TVOS 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL tvOS OR CLR_CMAKE_TARGET_OS STREQUAL tvOSSimulator)

if(CLR_CMAKE_TARGET_OS STREQUAL FreeBSD)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_FREEBSD 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL FreeBSD)

if(CLR_CMAKE_TARGET_OS STREQUAL OpenBSD)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_OPENBSD 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL OpenBSD)

if(CLR_CMAKE_TARGET_OS STREQUAL NetBSD)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_NETBSD 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL NetBSD)

if(CLR_CMAKE_TARGET_OS STREQUAL SunOS)
    set(CLR_CMAKE_TARGET_UNIX 1)
    if(CLR_CMAKE_HOST_OS_ILLUMOS)
        set(CLR_CMAKE_TARGET_OS_ILLUMOS 1)
    else(CLR_CMAKE_HOST_OS_ILLUMOS)
        set(CLR_CMAKE_TARGET_OS_SOLARIS 1)
    endif(CLR_CMAKE_HOST_OS_ILLUMOS)
    set(CLR_CMAKE_TARGET_SUNOS 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL SunOS)

if(CLR_CMAKE_TARGET_OS STREQUAL Emscripten)
    set(CLR_CMAKE_TARGET_UNIX 1)
    set(CLR_CMAKE_TARGET_LINUX 1)
    set(CLR_CMAKE_TARGET_BROWSER 1)
endif(CLR_CMAKE_TARGET_OS STREQUAL Emscripten)

if(CLR_CMAKE_TARGET_UNIX)
    if(CLR_CMAKE_TARGET_ARCH STREQUAL x64)
        set(CLR_CMAKE_TARGET_UNIX_AMD64 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL armel)
        set(CLR_CMAKE_TARGET_UNIX_ARM 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL arm)
        set(CLR_CMAKE_TARGET_UNIX_ARM 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL armv6)
        set(CLR_CMAKE_TARGET_UNIX_ARMV6 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL arm64)
        set(CLR_CMAKE_TARGET_UNIX_ARM64 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL loongarch64)
        set(CLR_CMAKE_TARGET_UNIX_LOONGARCH64 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL riscv64)
        set(CLR_CMAKE_TARGET_UNIX_RISCV64 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL x86)
        set(CLR_CMAKE_TARGET_UNIX_X86 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL s390x)
        set(CLR_CMAKE_TARGET_UNIX_S390X 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL ppc64le)
        set(CLR_CMAKE_TARGET_UNIX_POWERPC64 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL wasm)
        set(CLR_CMAKE_TARGET_UNIX_WASM 1)
    elseif(CLR_CMAKE_TARGET_ARCH STREQUAL mips64)
        set(CLR_CMAKE_TARGET_UNIX_MIPS64 1)
    else()
        clr_unknown_arch()
    endif()
else()
    set(CLR_CMAKE_TARGET_WIN32 1)
endif(CLR_CMAKE_TARGET_UNIX)

# check if host & target os/arch combination are valid
if (CLR_CMAKE_TARGET_OS STREQUAL CLR_CMAKE_HOST_OS)
    if(NOT(CLR_CMAKE_TARGET_ARCH STREQUAL CLR_CMAKE_HOST_ARCH))
        if(NOT((CLR_CMAKE_HOST_ARCH_AMD64 AND CLR_CMAKE_TARGET_ARCH_ARM64) OR (CLR_CMAKE_HOST_ARCH_I386 AND CLR_CMAKE_TARGET_ARCH_ARM) OR (CLR_CMAKE_HOST_ARCH_AMD64 AND CLR_CMAKE_TARGET_ARCH_ARM) OR (CLR_CMAKE_HOST_ARCH_AMD64 AND CLR_CMAKE_TARGET_ARCH_I386)))
            message(FATAL_ERROR "Invalid platform and target arch combination TARGET_ARCH=${CLR_CMAKE_TARGET_ARCH} HOST_ARCH=${CLR_CMAKE_HOST_ARCH}")
        endif()
    endif()
else()
    if(NOT (CLR_CMAKE_HOST_OS STREQUAL windows))
        message(FATAL_ERROR "Invalid host and target os/arch combination. Host OS: ${CLR_CMAKE_HOST_OS}")
    endif()
    if(NOT (CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_ALPINE_LINUX))
        message(FATAL_ERROR "Invalid host and target os/arch combination. Target OS: ${CLR_CMAKE_TARGET_OS}")
    endif()
    if(NOT ((CLR_CMAKE_HOST_ARCH_AMD64 AND (CLR_CMAKE_TARGET_ARCH_AMD64 OR CLR_CMAKE_TARGET_ARCH_ARM64)) OR (CLR_CMAKE_HOST_ARCH_I386 AND CLR_CMAKE_TARGET_ARCH_ARM)))
        message(FATAL_ERROR "Invalid host and target os/arch combination. Host Arch: ${CLR_CMAKE_HOST_ARCH} Target Arch: ${CLR_CMAKE_TARGET_ARCH}")
    endif()
endif()

if(NOT CLR_CMAKE_TARGET_BROWSER)
    # The default linker on Solaris also does not support PIE.
    if(NOT CLR_CMAKE_TARGET_ANDROID AND NOT CLR_CMAKE_TARGET_SUNOS AND NOT CLR_CMAKE_TARGET_OSX AND NOT CLR_CMAKE_TARGET_MACCATALYST AND NOT CLR_CMAKE_HOST_TVOS AND NOT CLR_CMAKE_HOST_IOS AND NOT MSVC)
        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pie")
        add_compile_options($<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,EXECUTABLE>:-fPIE>)
        add_compile_options($<$<STREQUAL:$<TARGET_PROPERTY:TYPE>,SHARED_LIBRARY>:-fPIC>)
    endif()

    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
endif()

string(TOLOWER "${CMAKE_BUILD_TYPE}" LOWERCASE_CMAKE_BUILD_TYPE)
if(LOWERCASE_CMAKE_BUILD_TYPE STREQUAL debug)
    # Clear _FORTIFY_SOURCE=2, if set
    string(REPLACE "-D_FORTIFY_SOURCE=2 " "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
    string(REPLACE "-D_FORTIFY_SOURCE=2 " "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
endif()