llvm-6502/cmake/modules/GetHostTriple.cmake

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# Returns the host triple.
# Invokes config.guess
function( get_host_triple var )
if( MSVC )
if( CMAKE_CL_64 )
set( value "x86_64-pc-win32" )
else()
set( value "i686-pc-win32" )
endif()
elseif( MINGW AND NOT MSYS )
if( CMAKE_SIZEOF_VOID_P EQUAL 8 )
set( value "x86_64-w64-mingw32" )
else()
set( value "i686-pc-mingw32" )
endif()
else( MSVC )
set(config_guess ${LLVM_MAIN_SRC_DIR}/autoconf/config.guess)
execute_process(COMMAND sh ${config_guess}
RESULT_VARIABLE TT_RV
OUTPUT_VARIABLE TT_OUT
OUTPUT_STRIP_TRAILING_WHITESPACE)
if( NOT TT_RV EQUAL 0 )
message(FATAL_ERROR "Failed to execute ${config_guess}")
endif( NOT TT_RV EQUAL 0 )
set( value ${TT_OUT} )
endif( MSVC )
set( ${var} ${value} PARENT_SCOPE )
message(STATUS "Target triple: ${value}")
endfunction( get_host_triple var )