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|
#!/bin/sh
CURDIR="$(cd "$(dirname "$0")" && pwd -P)/"
SYSTEM_BIN_DIR="@CMAKE_INSTALL_FULL_BINDIR@/"
if [ "${CURDIR}" = "${SYSTEM_BIN_DIR}" ]; then # we are installed
PREFIX="@CMAKE_INSTALL_FULL_LIBEXECDIR@"
else # we are just unpacked
PREFIX="${CURDIR}/../@CMAKE_INSTALL_LIBEXECDIR@"
fi
BIN_FAILSAFE=${PREFIX}/lambda2
BIN_SSE4=${PREFIX}/lambda2-sse4
# failsafe is default
BIN=${BIN_FAILSAFE}
case $(uname) in
"Linux")
grep -E "flags.* popcnt " -q /proc/cpuinfo 2>/dev/null && \
grep -E "flags.* sse4_1 " -q /proc/cpuinfo 2>/dev/null && \
grep -E "flags.* sse4_2 " -q /proc/cpuinfo 2>/dev/null && \
export BIN=${BIN_SSE4}
;;
"FreeBSD")
grep -E "Feature.*POPCNT" -q /var/run/dmesg.boot 2>/dev/null && \
grep -E "Feature.*SSE4\.1" -q /var/run/dmesg.boot 2>/dev/null && \
grep -E "Feature.*SSE4\.2" -q /var/run/dmesg.boot 2>/dev/null && \
export BIN=${BIN_SSE4}
;;
## OpenBSD doesn't yet support POPCNT software side (although it does detect the cpu feature)
# "OpenBSD")
# grep -E "cpu.*POPCNT" -q /var/run/dmesg.boot 2>/dev/null && \
# grep -E "cpu.*SSE4\.1" -q /var/run/dmesg.boot 2>/dev/null && \
# grep -E "cpu.*SSE4\.2" -q /var/run/dmesg.boot 2>/dev/null && \
# export BIN=${BIN_SSE4}
# ;;
"Darwin")
sysctl machdep.cpu.features 2>&1 | grep -E "POPCNT" -q 2>/dev/null && \
sysctl machdep.cpu.features 2>&1 | grep -E "SSE4\.1" -q 2>/dev/null && \
sysctl machdep.cpu.features 2>&1 | grep -E "SSE4\.2" -q 2>/dev/null && \
export BIN=${BIN_SSE4}
;;
esac
exec "${BIN}" "${@}"
|
