1# Returns the host triple. 2# Invokes config.guess 3 4function( get_host_triple var ) 5 if( MSVC ) 6 if( CMAKE_SIZEOF_VOID_P EQUAL 8 ) 7 set( value "x86_64-pc-windows-msvc" ) 8 else() 9 set( value "i686-pc-windows-msvc" ) 10 endif() 11 elseif( MINGW AND NOT MSYS ) 12 if( CMAKE_SIZEOF_VOID_P EQUAL 8 ) 13 set( value "x86_64-w64-windows-gnu" ) 14 else() 15 set( value "i686-pc-windows-gnu" ) 16 endif() 17 elseif( CMAKE_SYSTEM_NAME MATCHES "OS390" ) 18 set( value "s390x-ibm-zos" ) 19 elseif( CMAKE_SYSTEM_NAME STREQUAL AIX ) 20 # We defer to dynamic detection of the host AIX version. 21 if( CMAKE_SIZEOF_VOID_P EQUAL 8 ) 22 set( value "powerpc64-ibm-aix" ) 23 else() 24 set( value "powerpc-ibm-aix" ) 25 endif() 26 else( MSVC ) 27 if(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows AND NOT MSYS) 28 message(WARNING "unable to determine host target triple") 29 else() 30 set(config_guess ${LLVM_MAIN_SRC_DIR}/cmake/config.guess) 31 execute_process(COMMAND sh ${config_guess} 32 RESULT_VARIABLE TT_RV 33 OUTPUT_VARIABLE TT_OUT 34 OUTPUT_STRIP_TRAILING_WHITESPACE) 35 if( NOT TT_RV EQUAL 0 ) 36 message(FATAL_ERROR "Failed to execute ${config_guess}") 37 endif( NOT TT_RV EQUAL 0 ) 38 set( value ${TT_OUT} ) 39 endif() 40 endif( MSVC ) 41 set( ${var} ${value} PARENT_SCOPE ) 42endfunction( get_host_triple var ) 43