Initial import of libdpf.

Co-authored-by: Cursor <cursoragent@cursor.com>

thirdparty/simde/test/check-flags.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+
+# Some CI workers support different ISA extensions on x86. We want to
+# run the tests if the extension is supported, but skip them if it
+# isn't.  Currently this only works on x86.
+
+if [ -z "${SDE_PATH}" ]; then
+  SDE_PATH="/opt/intel/sde"
+fi
+
+if [ ! -d "${SDE_PATH}" ]; then
+  mkdir -p "${SDE_PATH}"
+fi
+
+NATIVE_SUPPORT=1
+for FLAG in $CFLAGS; do
+  echo $FLAG | grep -qP '^\-m[0-9a-zA-Z\.]+$' || continue
+  case "${FLAG:2}" in
+    # sse3 doesn't show up in /proc/cpuinfo (?!?!)
+    "sse3")
+      ;;
+    *)
+      grep -qP " ${FLAG:2} " /proc/cpuinfo || NATIVE_SUPPORT=0
+      ;;
+  esac
+done
+
+COMMAND="$1"
+shift
+
+case "$COMMAND" in
+  "try" | "sde" | "query")
+    ;;
+  *)
+    echo "Unknown command ($COMMAND)" >&2
+    exit 1
+    ;;
+esac
+
+if [ $COMMAND = 'query' ]; then
+  test $NATIVE_SUPPORT -eq 1
+  exit $?
+elif [ $NATIVE_SUPPORT -eq 1 ]; then
+  $@
+  exit $?
+elif [ "$COMMAND" = "sde" ]; then
+  (
+    flock 9
+    if [ ! -e "${SDE_PATH}/sde64" ]; then
+      "$(dirname "$0")"/download-sde.sh "${SDE_PATH}"
+    fi
+  ) 9>/tmp/sde-download.lock
+  "${SDE_PATH}/sde64" -tgl -- $@
+  exit $?
+else
+  echo "Flags not supported, skipping"
+fi