build.gradle

buildscript {
    repositories {
        mavenCentral()
        maven {
            name = "forge"
            url = 'https://maven.minecraftforge.net/'
        }
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:2.1-SNAPSHOT'
    }
}
apply plugin: 'net.minecraftforge.gradle.forge'

version = "1.0"              // replace with the version of your mod that you have in your main mod file
group = "com.yourname.modid" // replace with your package name see http://maven.apache.org/guides/mini/guide-naming-conventions.html
archivesBaseName = "modid"   // this will be the name of the .jar it can be whatever you like

sourceCompatibility = 1.8
targetCompatibility = 1.8

minecraft {
    version = "1.8.9-11.15.1.2318-1.8.9"
    runDir = "run"
    mappings = "stable_22"
    makeObfSourceJar = false
}

dependencies {
    // if you want to use classes of another mod/library, you can add that .jar in a /libs folder
    // in the project, then open the project structure in `intellIJ > libraries > add` and select the jar
    // you will now be able to compile your mod while using classes of another mod

    // or you may define them like so..
    //compile "some.group:artifact:version:classifier"
    //compile "some.group:artifact:version"

    // real examples
    //compile 'com.mod-buildcraft:buildcraft:6.0.8:dev'  // adds buildcraft to the dev env
    //compile 'com.googlecode.efficient-java-matrix-library:ejml:0.24' // adds ejml to the dev env

    // the 'provided' configuration is for optional dependencies that exist at compile-time but might not at runtime.
    //provided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // the deobf configurations:  'deobfCompile' and 'deobfProvided' are the same as the normal compile and provided,
    // except that these dependencies get remapped to your current MCP mappings
    //deobfCompile 'com.mod-buildcraft:buildcraft:6.0.8:dev'
    //deobfProvided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // for more info...
    // http://www.gradle.org/docs/current/userguide/artifact_dependencies_tutorial.html
    // http://www.gradle.org/docs/current/userguide/dependency_management.html

}

processResources {
    inputs.property "version", project.version
    inputs.property "mcversion", project.minecraft.version
    from(sourceSets.main.resources.srcDirs) {
        include 'mcmod.info'
        expand 'version': project.version, 'mcversion': project.minecraft.version
    }
    from(sourceSets.main.resources.srcDirs) {
        exclude 'mcmod.info'
    }
}