diff --git a/build-android.sh b/build-android.sh
new file mode 100755
index 0000000..e054951
--- /dev/null
+++ b/build-android.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+set -ev
+VERSION=5.59
+DST=stunnel-$VERSION-android
+
+# download Android NDK r21e: https://developer.android.com/ndk/downloads
+# build arm-linux-androideabi toolchain
+# ./build/tools/make-standalone-toolchain.sh --toolchain=arm-linux-androideabi
+# cd /toochains/dir 
+# tar xfv /tmp/ndk-root/arm-linux-androideabi.tar.bz2
+# export PATH=/toolchains/dir/arm-linux-androideabi/bin:${PATH}
+# export ANDROID_NDK_HOME=/toolchains/dir/arm-linux-androideabi
+
+# to build Zlib:
+# CHOST=arm-linux-androideabi ./configure --static --prefix=/opt/androideabi/sysroot
+# make install
+
+# to build OpenSSL:
+# ./Configure threads no-shared zlib --cross-compile-prefix=arm-linux-androideabi- --openssldir=/opt/androideabi/sysroot anrdroid-arm
+# make install
+
+test -f Makefile && make distclean
+mkdir -p bin/android
+cd bin/android
+../../configure --with-sysroot --host=arm-linux-androideabi --prefix=/data/local
+make clean
+make
+cd ../..
+mkdir $DST
+cp bin/android/src/stunnel $DST
+# arm-linux-androideabi-strip $DST/stunnel $DST/openssl
+# cp /opt/androideabi/sysroot/bin/openssl $DST
+# arm-linux-androideabi-strip $DST/openssl
+zip -r $DST.zip $DST
+rm -rf $DST
+# sha256sum $DST.zip
+# mv $DST.zip ../dist/