build.gradle

apply plugin: 'maven'
apply plugin: 'com.android.library'
apply plugin: 'signing'

import org.gradle.internal.os.OperatingSystem;

if (project==rootProject) {
    apply plugin: 'io.codearte.nexus-staging'
}

repositories {
    mavenLocal()
    mavenCentral()
    jcenter()
    google()
}

android {
    compileSdkVersion 28

    defaultConfig {
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    lintOptions {
        abortOnError false
    }

    // To let the libs be included in other projects
    externalNativeBuild {
        ndkBuild {
            path "jni/Android.mk"
        }
    }

    defaultConfig {
        minSdkVersion 9
        targetSdkVersion 23
        versionCode project.VERSION_CODE.toInteger()
        versionName project.VERSION_NAME
    }

    buildTypes {
        release {
            minifyEnabled false
        }
    }
}

dependencies {
    // TODO are these required in this lib project?
    //compile fileTree(include: ['*.jar'], dir: 'libs')
   //compile 'com.android.support:appcompat-v7:23.1.1'
   testImplementation group: 'com.google.guava', name: 'guava', version: '23.0'
   testImplementation 'junit:junit:4.12'
   androidTestImplementation group: 'com.google.guava', name: 'guava', version: '23.0'
   androidTestImplementation 'junit:junit:4.12'
   androidTestImplementation 'com.android.support.test:runner:0.5'
}

buildscript {
    System.properties['com.android.build.gradle.overrideVersionCheck'] = 'true'
    repositories {
        mavenCentral()
    	jcenter()
        mavenLocal()
        //https://developer.android.com/topic/libraries/testing-support-library/packages.html#gradle-maven-dependencies
        maven {
            url "https://maven.google.com"
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.0'
        classpath "io.codearte.gradle.nexus:gradle-nexus-staging-plugin:0.20.0"
    }
}

[
  [input_arch: 'arm',     output_arch: 'android-armv6',    ndk_platform: 'android-16' ],
  [input_arch: 'armv7-a', output_arch: 'android-armv7-a',  ndk_platform: 'android-16' ],
  [input_arch: 'armv8-a', output_arch: 'android-armv8-a',  ndk_platform: 'android-21'],
  [input_arch: 'x86',     output_arch: 'android-i686',     ndk_platform: 'android-16' ],
  [input_arch: 'x86_64',  output_arch: 'android-westmere', ndk_platform: 'android-21'],
].each { opts -> 

  def taskname = "compileNative_${opts['output_arch']}"
  
  task(taskname) {
    inputs.dir  fileTree(dir: 'libsodium/src', exclude: ['libsodium/**/.libs', 'libsodium/*.la', 'libsodium/**/*.lo', 'libsodium/**/*.o', 'libsodium/**/*.Plo', '**/Makefile', '**/Makefile.in', '**/.deps/*', '**/.libs/*'])
    outputs.dir("libsodium/libsodium-${opts['output_arch']}")
    doFirst {
        exec {
          workingDir 'libsodium'
          commandLine './autogen.sh'
        }
        exec {
          workingDir 'libsodium'
          environment 'LIBSODIUM_FULL_BUILD','true'
          executable "dist-build/android-${opts['input_arch']}.sh"
          environment 'CONFIG_SITE', '' // This makes ./configure load information about the host and guess this is information valid for the target. However, the target is Android here, the host information does not apply. 
          //environment 'NDK_PLATFORM', opts['ndk_platform'] // The lowest possible value is android-9 here. Certain Android API levels below android-16 do not have posix_memalign. This should not make a difference in practice, as android-9 has MAP_ANONYMOUS and HAVE_MMAP and posix_memalign is only used as fallback in the current libsodium code if MAP_ANONYMOUS or HAVE_MMAP are unavailable.
        }
    }
  }
  
  gradle.projectsEvaluated {
    externalNativeBuildDebug.dependsOn   taskname
    externalNativeBuildRelease.dependsOn taskname
  }
}

apply plugin: "c"

model {
  flavors {
    host // Also compile the native library for the host OS to allow running tests which access the library on the host OS.
  }
  repositories {
    libs(PrebuiltLibraries) {
      jdk {
        headers.srcDir "${System.getenv("JAVA_HOME")}/include"
        headers.srcDir "${System.getenv("JAVA_HOME")}/include/linux" // this seems to be host OS dependent, but should be host OS independent
        headers.srcDir "${System.getenv("JAVA_HOME")}/include/darwin"
      }
      sodium {
        headers.srcDir "${projectDir}/libsodium/libsodium-host/include"
        binaries.withType(StaticLibraryBinary) { binary ->
          staticLibraryFile = file("${projectDir}/libsodium/libsodium-host/lib/libsodium.a")
        }       
      }
    }
  }
  components {
    sodiumjni(NativeLibrarySpec) {
      sources {
        c {
          source {
            srcDir "${projectDir}/jni"
            include "sodium_wrap.c"
            include "dummy.c"
          }
          lib library: 'jdk',    linkage: 'api'
          lib library: 'sodium', linkage: 'static'
        }
        binaries.all {
          if (OperatingSystem.current().isLinux()) {
              //flag not on macos clang
              linker.args "-Wl,-Bsymbolic" // to work around error "shared library text segment is not shareable"
          }
        }
      }
    }
  }
}

tasks.withType(Test) { task ->
  systemProperty "java.library.path", "${projectDir}/build/libs/sodiumjni/shared"
  task.dependsOn('sodiumjniSharedLibrary')
}

task('generateSWIGsource') {
  inputs.dir   fileTree(dir: "${projectDir}/jni")
  outputs.dir("${projectDir}/src/main/java/org/libsodium/jni")
  outputs.file "${projectDir}/jni/sodium_wrap.c"
  doFirst {
    exec {
      workingDir "${projectDir}/jni"
      commandLine 'swig','-java','-package','org.libsodium.jni','-outdir','../src/main/java/org/libsodium/jni','sodium.i'
    }
  }
}

gradle.projectsEvaluated {
  generateJsonModelDebug.dependsOn   'generateSWIGsource'
  generateJsonModelRelease.dependsOn 'generateSWIGsource'
}


uploadArchives {
  repositories {
    mavenDeployer {
      beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }

      repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
        authentication(userName: System.getenv('SONATYPE_USERNAME'), password: System.getenv('SONATYPE_PASSWORD'))
      }

      snapshotRepository(url: "https://oss.sonatype.org/content/repositories/snapshots/") {
        authentication(userName: System.getenv('SONATYPE_USERNAME'), password: System.getenv('SONATYPE_PASSWORD'))
      }

      pom.project {
        name project.POM_NAME
        packaging 'jar'
        artifactId project.POM_ARTIFACT_ID
        groupId project.GROUP
        version project.VERSION_NAME
        // optionally artifactId can be defined here 
        description project.POM_ARTIFACT_ID
        url project.POM_URL

        scm {
          connection 'scm:git@github.com:joshjdevl/libsodium-jni.git'
          developerConnection 'scm:git@github.com:joshjdevl/libsodium-jni.git'
          url 'https://github.com/joshjdevl/libsodium-jni'
        }

        licenses {
          license {
            name 'GNU General Public License v3.0'
            url 'https://www.gnu.org/licenses/gpl-3.0.en.html'
          }
        }

        developers {
          developer {
            id 'joshjdevl'
            name 'joshjdevl'
            email 'joshjdevl@gmail.com'
          }
        }
      }
    }
  }
}

task javadoc(type: Javadoc) {
    source = android.sourceSets.main.java.srcDirs
    classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
}

task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from javadoc.destinationDir
}

task sourcesJar(type: Jar) {
    classifier = 'sources'
    from android.sourceSets.main.java.srcDirs
}

artifacts {
    archives javadocJar, sourcesJar
}

signing {
    required = { !project.VERSION_NAME.endsWith("SNAPSHOT") && gradle.taskGraph.hasTask("uploadArchives") }
    sign configurations.archives
}

if (project==rootProject) {
    nexusStaging {
        packageGroup = "com.github.joshjdevl"
    }
}