diff --git a/soong.bash b/soong.bash
new file mode 100755
index 0000000..fc330d0
--- /dev/null
+++ b/soong.bash
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Determine the build directory location based on the location of this script.
+BPBUILD="${BASH_SOURCE[0]}"
+BUILDDIR=`dirname "${BASH_SOURCE[0]}"`
+BOOTSTRAP=${BUILDDIR}/.soong.bootstrap
+
+# The source directory path and operating system will get written to
+# .soong.bootstrap by the bootstrap script.
+
+if [ ! -f ${BUILDDIR}/${BOOTSTRAP} ]; then
+    echo "Error: soong script must be located in a directory created by bootstrap.bash"
+    exit 1
+fi
+
+source ${BUILDDIR}/.soong.bootstrap
+
+if [[ ${SRCDIR_IN:0:1} == '/' ]]; then
+    # SRCDIR_IN is an absolute path
+    SRCDIR=${SRCDIR_IN}
+else
+    # SRCDIR_IN is a relative path
+    SRCDIR=${BUILDDIR}/${SRCDIR_IN}
+fi
+
+# Let Blueprint know that the Ninja we're using performs multiple passes that
+# can regenerate the build manifest.
+export BLUEPRINT_NINJA_HAS_MULTIPASS=1
+
+${SRCDIR}/prebuilts/ninja/${PREBUILTOS}/ninja -C ${BUILDDIR} "$@"