--- /dev/null
+++ libmalloc/libmalloc-792.1.1/xcodescripts/install-featureflags.sh
@@ -0,0 +1,16 @@
+#!/bin/bash -ex
+
+if [ "${DRIVERKIT}" = 1 ]; then exit 0; fi
+
+INPUT=${SCRIPT_INPUT_FILE_0}
+# Don't use output files: Xcode insists on creating the containing directory,
+# which is wrong for DriverKit
+OUTPUT=${DSTROOT}/System/Library/FeatureFlags/Domain/libmalloc.plist
+
+mkdir -p "$(dirname "${OUTPUT}")"
+
+xcrun clang -x c -P -E                          \
+        ${MALLOC_IOS_FEATUREFLAG_OVERRIDE}      \
+        -imacros TargetConditionals.h           \
+        "$INPUT"                                \
+        -o "$OUTPUT"