From 7a63e0a59f9384f79b3bd333b825b8c8f3b5f14e Mon Sep 17 00:00:00 2001
From: seven332 <seven332@163.com>
Date: Mon, 29 Feb 2016 16:42:20 +0800
Subject: [PATCH] Read NDK_HOME system variable

---
 app/build.gradle | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/build.gradle b/app/build.gradle
index ad2de1ea3..75b8a50f4 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -36,6 +36,10 @@ android {
     // noinspection GroovyAssignabilityCheck
     task ndkBuild(type: Exec, description: 'Compile JNI source via NDK') {
         def ndkDir = project.plugins.findPlugin('com.android.application').sdkHandler.getNdkFolder()
+        if (ndkDir == null) {
+            ndkDir = System.getenv('NDK_HOME')
+        }
+        assert ndkDir != null
         def ndkBuilder
         if (Os.isFamily(Os.FAMILY_WINDOWS)) {
             ndkBuilder = 'ndk-build.cmd'