Add m2n, a wrapper script of kati for Android
diff --git a/m2n b/m2n
new file mode 100755
index 0000000..3951c3c
--- /dev/null
+++ b/m2n
@@ -0,0 +1,44 @@
+#!/bin/bash
+#
+# A wrapper for kati which generates build.ninja mainly for Android.
+#
+
+set -e
+
+kati_dir=$(cd $(dirname $0) && pwd)
+
+goma_flag=
+
+case "$1" in
+ --help)
+ cat - <<EOF
+Usage:
+ m2n # for full-build
+ m2n bionic # works like mmm
+EOF
+ exit 1
+ ;;
+ --goma)
+ if [ ! -e $HOME/goma/goma_ctl.py ]; then
+ echo "$HOME/goma/goma_ctl.py should exist to use goma"
+ exit 1
+ fi
+ $HOME/goma/goma_ctl.py ensure_start
+ goma_flag=--goma_dir=$HOME/goma
+ ;;
+ *)
+ target=$1
+ shift
+ ;;
+esac
+
+kati=${kati_dir}/kati
+
+if [ x"${target}" != x"" ]; then
+ export ONE_SHOT_MAKEFILE=${target}/Android.mk
+ echo ONE_SHOT_MAKEFILE=${ONE_SHOT_MAKEFILE}
+fi
+
+${kati} --ninja --ignore_optional_include=out/ ${goma_flag}
+
+echo ninja.sh and build.ninja were generated, please run ./ninja.sh
