chapter14-1.md

Node.js in IoT

1. Build Node.js for Android

Linux build environment

jiangling@young:~/node/deps/npm$ uname -a
Linux young 3.11.0-15-generic #25~precise1-Ubuntu SMP Thu Jan 30 17:39:31 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

32-bit Android NDK

drwxr-xr-x 10 jiangling jiangling      4096  3月  1  2014 android-ndk-r9d

Clone Node.js

git clone https://github.com/joyent/node.git

Android-configure patch

jiangling@young:~/node$ git diff
diff --git a/android-configure b/android-configure
index 7acb7f3..aae0bf1 100755
--- a/android-configure
+++ b/android-configure
@@ -3,7 +3,7 @@
 export TOOLCHAIN=$PWD/android-toolchain
 mkdir -p $TOOLCHAIN
 $1/build/tools/make-standalone-toolchain.sh \
-    --toolchain=arm-linux-androideabi-4.7 \
+    --toolchain=arm-linux-androideabi-4.8 \
     --arch=arm \
     --install-dir=$TOOLCHAIN \
     --platform=android-9

Otherwise, the error arm-linux-androideabi-gcc not found will occur.

Configure && make

source ./android-configure ~/android-ndk-r9b
mv python2.7 oldpython2.7
ln -s /usr/bin/python2.7 python2.7
cd  ~/node
make

Node binary size

jiangling@young:~/node$ file out/Release/node 
out/Release/node: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped

root@android:/data/local/tmp # ls -al node
ls -al node
-rwx------ shell    shell    12158228 2014-11-24 17:01 node

Size after configuring without-ssl

jiangling@young:~/node$ ls -al out/Release/node 
-rwxrwxr-x 1 jiangling jiangling 9804644 11月 26 13:55 out/Release/node

2. Run Node.js on Android

I chose a rooted Xiaomi M1 phone and installed "Swiss Army Knife" busybox to view system information.

root@android:/data/local/tmp # ./busybox uname -a
./busybox uname -a
Linux localhost 3.4.0-perf-g1ccebb5-00146-gd6845ec #1 SMP PREEMPT Mon Nov 4 20:10:00 CST 2013 armv7l GNU/Linux

Use ADB to push node and test.js (the classic hello world) to M1:

adb push d:\node /data/local/tmp
adb push d:\test.js /data/local/tmp
adb shell chmod 755 /data/local/tmp/node

Run and result