| Index: README.md | 
| diff --git a/README.md b/README.md | 
| index 1b3a8911fe38e43a6839cdf6eaf8521524a72b9f..9160da322fe422ff1068a05379b74c4a5d60c619 100644 | 
| --- a/README.md | 
| +++ b/README.md | 
| @@ -91,6 +91,20 @@ An app that uses the library have to add the following permissions to `AndroidMa | 
|  | 
| (added automatically if building with Gradle or should be added manually otherwise). | 
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| +### Build directory configuration | 
| + | 
| +By default Gradle uses `build` directory to build modules, however it can be undesired | 
| +for some use cases like CI or building as Chromium submodule. | 
| +Set `GRADLE_BUILD_DIR` environment variable to configure build directory: | 
| + | 
| +    GRADLE_BUILD_DIR=/tmp ./gradlew clean assemble | 
| + | 
| +Note | 
| + | 
| +    [Configuration] Building project in /tmp | 
| + | 
| +output while building | 
| + | 
| ### Building with prebuilt shared V8 | 
|  | 
| This can be desired to use product's V8 (let's say Chromium) instead of built-in V8. | 
|  |