diff --git a/bootstrap.bash b/bootstrap.bash
index ff1ac8a..769736f 100755
--- a/bootstrap.bash
+++ b/bootstrap.bash
@@ -1,61 +1,9 @@
 #!/bin/bash
 
-set -e
+echo '==== ERROR: bootstrap.bash & ./soong are obsolete ====' >&2
+echo 'Use `m --skip-make` with a standalone OUT_DIR instead.' >&2
+echo 'Without envsetup.sh, use:' >&2
+echo '  build/soong/soong_ui.bash --make-mode --skip-make' >&2
+echo '======================================================' >&2
+exit 1
 
-if [ -z "$NO_DEPRECATION_WARNING" ]; then
-    echo '== WARNING: bootstrap.bash & ./soong are deprecated ==' >&2
-    echo 'Use `m --skip-make` with a standalone OUT_DIR instead.' >&2
-    echo 'Without envsetup.sh, use:' >&2
-    echo '  build/soong/soong_ui.bash --make-mode --skip-make' >&2
-    echo '======================================================' >&2
-fi
-
-ORIG_SRCDIR=$(dirname "${BASH_SOURCE[0]}")
-if [[ "$ORIG_SRCDIR" != "." ]]; then
-  if [[ ! -z "$BUILDDIR" ]]; then
-    echo "error: To use BUILDDIR, run from the source directory"
-    exit 1
-  fi
-  export BUILDDIR=$("${ORIG_SRCDIR}/build/soong/scripts/reverse_path.py" "$ORIG_SRCDIR")
-  cd $ORIG_SRCDIR
-fi
-if [[ -z "$BUILDDIR" ]]; then
-  echo "error: Run ${BASH_SOURCE[0]} from the build output directory"
-  exit 1
-fi
-export SRCDIR="."
-export BOOTSTRAP="${SRCDIR}/bootstrap.bash"
-export BLUEPRINTDIR="${SRCDIR}/build/blueprint"
-
-export TOPNAME="Android.bp"
-export RUN_TESTS="-t"
-
-case $(uname) in
-    Linux)
-	export PREBUILTOS="linux-x86"
-	;;
-    Darwin)
-	export PREBUILTOS="darwin-x86"
-	;;
-    *) echo "unknown OS:" $(uname) && exit 1;;
-esac
-export GOROOT="${SRCDIR}/prebuilts/go/$PREBUILTOS"
-
-if [[ $# -eq 0 ]]; then
-    mkdir -p $BUILDDIR
-
-    if [[ $(find $BUILDDIR -maxdepth 1 -name Android.bp) ]]; then
-      echo "FAILED: The build directory must not be a source directory"
-      exit 1
-    fi
-
-    export SRCDIR_FROM_BUILDDIR=$(build/soong/scripts/reverse_path.py "$BUILDDIR")
-
-    sed -e "s|@@BuildDir@@|${BUILDDIR}|" \
-        -e "s|@@SrcDirFromBuildDir@@|${SRCDIR_FROM_BUILDDIR}|" \
-        -e "s|@@PrebuiltOS@@|${PREBUILTOS}|" \
-        "$SRCDIR/build/soong/soong.bootstrap.in" > $BUILDDIR/.soong.bootstrap
-    ln -sf "${SRCDIR_FROM_BUILDDIR}/build/soong/soong.bash" $BUILDDIR/soong
-fi
-
-"$SRCDIR/build/blueprint/bootstrap.bash" "$@"