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include_guard(GLOBAL)
function (CHECK_EXECUTABLE executable result)
set (${result} "UNKNOWN" PARENT_SCOPE)
if (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
set (tool otool -hv)
else()
set (tool "${CMAKE_COMMAND}" -E env LANG=C LC_ALL=C readelf -lW)
endif()
execute_process(COMMAND ${tool} "${executable}"
OUTPUT_VARIABLE output
ERROR_VARIABLE output)
if (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
if (output MATCHES "( |\t)PIE( |\n|$)")
set (${result} "PIE" PARENT_SCOPE)
else()
set (${result} "NO_PIE" PARENT_SCOPE)
endif()
else()
if (output MATCHES "Elf file type is DYN")
set (${result} "PIE" PARENT_SCOPE)
elseif (output MATCHES "Elf file type is EXEC")
set (${result} "NO_PIE" PARENT_SCOPE)
else()
message(SEND_ERROR "Did not find a known file type")
endif()
endif()
endfunction()
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