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# Check the username performing the build, as well as date, time, and
# build CPU features.
#
# The following variables will be set to the user/host/cpu used for
# configuration, or anonymous/unknown if it cannot be detected
# (Windows).
#
# BUILD_CPU_VENDOR
# BUILD_CPU_BRAND
# BUILD_CPU_FAMILY
# BUILD_CPU_MODEL
# BUILD_CPU_STEPPING
# BUILD_CPU_FEATURES
#

include(gmxDetectCpu)

function(gmx_set_build_information)
    # Set up some defaults that will usually be overwritten
    if(CMAKE_CROSSCOMPILING)
        set(_reason ", cross-compiled")
    endif()

    # Run the cpu detection. If it produces an empty output, set a
    # local value in the parent scope with a suitable fallback (which
    # hides the cached value).

    macro(gmx_get_build_cpu_string TYPE DEFAULT_VALUE)
        string(TOUPPER ${TYPE} UPPERTYPE)
        gmx_run_cpu_detection(${TYPE})
        set(OUTPUT_VALUE "${DEFAULT_VALUE}")
        if (CPU_DETECTION_${UPPERTYPE})
            set(OUTPUT_VALUE ${CPU_DETECTION_${UPPERTYPE}})
        endif()
        set(BUILD_CPU_${UPPERTYPE} ${OUTPUT_VALUE} PARENT_SCOPE)
    endmacro()

    gmx_get_build_cpu_string(vendor   "Unknown${_reason}")
    gmx_get_build_cpu_string(brand    "Unknown${_reason}")
    gmx_get_build_cpu_string(family   "0")
    gmx_get_build_cpu_string(model    "0")
    gmx_get_build_cpu_string(stepping "0")
    gmx_get_build_cpu_string(features "Unknown${_reason}")
endfunction()