Merge pull request rnc-archive#25 from stoffern/master

[Android] - Fix compilation issues NDK errors

Author: gre

README.md

@@ -31,6 +31,7 @@ react-native-webgl is implemented with some C++ bricks and `react-native link re
 
 - `android/local.properties`: Make sure you have Android NDK (needed to compile the Native C++ code) and that it's properly configured in ANDROID_NDK env or in `local.properties` file (e.g. `ndk.dir=/usr/local/opt/android-ndk-r10e`).
 - `android/build.gradle`: If it's not already there, add `gradle-download-task` **buildscript** dependency: `classpath 'de.undercouch:gradle-download-task:3.1.2'` . If you don't do this, you will likely have `:downloadJSCHeaders` not working.
+- `android/app/build.gradle`: Make shure you have `minSdkVersion 17` or higher
 
 ## Usage
 

android/src/main/jni/Application.mk

@@ -17,4 +17,4 @@ APP_LDFLAGS += -lGLESv2
 APP_LDFLAGS += -pthread
 APP_LDFLAGS += -ljnigraphics
 
-NDK_TOOLCHAIN_VERSION := 4.8
+NDK_TOOLCHAIN_VERSION := 4.9

cpp/RNWebGL.cpp

@@ -24,6 +24,8 @@
 #include "JSUtils.h"
 #include "JSConvertTypedArray.h"
 
+#include <stdlib.h>
+
 #ifdef __APPLE__
 #include "EXiOSUtils.h"
 #endif