# Load Freepascal

if (FPC)

    set(FPC_EXECUTABLE ${FPC})

else()

    find_program(FPC_EXECUTABLE

        NAMES fpc

        PATHS /opt/local/bin /usr/local/bin /usr/bin)

endif()

# Check Freepascal version

if (FPC_EXECUTABLE)

    exec_program(${FPC_EXECUTABLE} ARGS "-v" OUTPUT_VARIABLE FPC_VERSION_FULL)

    string(REGEX MATCH "[0-9]+\\.[0-9]+" FPC_VERSION_LONG "${FPC_VERSION_FULL}")

    string(REGEX REPLACE "([0-9]+\\.[0-9]+)" "\\1" FPC_VERSION "${FPC_VERSION_LONG}")

    message(STATUS "Found Freepascal: ${FPC_EXECUTABLE} (version ${FPC_VERSION}")

else()

    message(FATAL_ERROR "Could NOT find Freepascal")

endif()

# Check for noexecstack flag support

set(NOEXECSTACK_FLAGS "-k-z" "-knoexecstack")

file(WRITE ${EXECUTABLE_OUTPUT_PATH}/checkstack.pas "begin end.")

execute_process(COMMAND ${FPC_EXECUTABLE} ${NOEXECSTACK_FLAGS} checkstack.pas

    WORKING_DIRECTORY ${EXECUTABLE_OUTPUT_PATH}

    RESULT_VARIABLE TEST_NOEXECSTACK

    OUTPUT_QUIET ERROR_QUIET)

if (TEST_NOEXECSTACK)

    set(NOEXECSTACK_FLAGS "")

    message(STATUS "Checking whether linker needs explicit noexecstack -- no")

else(TEST_NOEXECSTACK)

    message(STATUS "Checking whether linker needs explicit noexecstack -- yes")

endif(TEST_NOEXECSTACK)