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1# Returns the host triple.2# Invokes config.guess3 4function( get_host_triple var )5 if( MSVC OR CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC")6 if( CMAKE_C_COMPILER_ARCHITECTURE_ID MATCHES "ARM64.*" )7 set( value "aarch64-pc-windows-msvc" )8 elseif( CMAKE_C_COMPILER_ARCHITECTURE_ID MATCHES "ARM.*" )9 set( value "armv7-pc-windows-msvc" )10 elseif( CMAKE_C_COMPILER_ARCHITECTURE_ID STREQUAL "x64" )11 set( value "x86_64-pc-windows-msvc" )12 elseif( CMAKE_C_COMPILER_ARCHITECTURE_ID STREQUAL "X86" )13 set( value "i686-pc-windows-msvc" )14 elseif( CMAKE_SIZEOF_VOID_P EQUAL 8 )15 set( value "x86_64-pc-windows-msvc" )16 else()17 set( value "i686-pc-windows-msvc" )18 endif()19 elseif( MINGW AND NOT MSYS )20 # CMake doesn't provide COMPILER_ARCHITECTURE_ID for Clang/GCC,21 # but it does for MSVC.22 if( CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "ARM.*" )23 if( CMAKE_SIZEOF_VOID_P EQUAL 8 )24 set( value "aarch64-w64-windows-gnu" )25 else()26 set( value "armv7-w64-windows-gnu" )27 endif()28 else()29 if( CMAKE_SIZEOF_VOID_P EQUAL 8 )30 set( value "x86_64-w64-windows-gnu" )31 else()32 set( value "i686-w64-windows-gnu" )33 endif()34 endif()35 elseif( CMAKE_SYSTEM_NAME MATCHES "OS390" )36 set( value "s390x-ibm-zos" )37 elseif( CMAKE_SYSTEM_NAME STREQUAL "AIX" )38 # We defer to dynamic detection of the host AIX version.39 if( CMAKE_SIZEOF_VOID_P EQUAL 8 )40 set( value "powerpc64-ibm-aix" )41 else()42 set( value "powerpc-ibm-aix" )43 endif()44 else()45 if(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows AND NOT MSYS)46 message(WARNING "unable to determine host target triple")47 else()48 set(config_guess ${LLVM_MAIN_SRC_DIR}/cmake/config.guess)49 execute_process(COMMAND sh ${config_guess}50 RESULT_VARIABLE TT_RV51 OUTPUT_VARIABLE TT_OUT52 OUTPUT_STRIP_TRAILING_WHITESPACE)53 if( NOT TT_RV EQUAL 0 )54 message(FATAL_ERROR "Failed to execute ${config_guess}")55 endif( NOT TT_RV EQUAL 0 )56 set( value ${TT_OUT} )57 endif()58 endif()59 set( ${var} ${value} PARENT_SCOPE )60endfunction( get_host_triple var )61