BATM-410

- proper Java 7 cross-compilation support

build.gradle

@@ -21,6 +21,31 @@ allprojects {
             dirs repoDir
         }
     }
+    //cross-compilation stuff for Java 7
+    assert (System.env.JDK_7_HOME != null): "Set environment property JDK_7_HOME"
+    project.ext.targetJavaHome = System.env.JDK_7_HOME
+    def javaExecutablesPath = new File(targetJavaHome, 'bin')
+    def javaExecutables = [:].withDefault { execName ->
+        def executable = new File(javaExecutablesPath, execName)
+        assert executable.exists(): "There is no ${execName} executable in ${javaExecutablesPath}"
+        executable
+    }
+    tasks.withType(JavaCompile) {
+        sourceCompatibility = '1.7'
+        options.with {
+            fork = true
+            forkOptions.javaHome = file(targetJavaHome)
+        }
+    }
+    tasks.withType(Javadoc) {
+        executable = javaExecutables.javadoc
+    }
+    tasks.withType(Test) {
+        executable = javaExecutables.java
+    }
+    tasks.withType(JavaExec) {
+        executable = javaExecutables.java
+    }
 }
 
 ext.with {

server_extensions_api/build.gradle

@@ -6,11 +6,6 @@ jar {
     baseName 'batm_server_extensions_api'
 }
 
-dependencies {
-    targetCompatibility = '1.7'
-    sourceCompatibility = '1.7'
-}
-
 distributions {
     main {
         contents {

server_extensions_extra/build.gradle

@@ -18,9 +18,6 @@ artifacts {
 }
 
 dependencies {
-    targetCompatibility = '1.7'
-    sourceCompatibility = '1.7'
-
     compile project(':server_extensions_api');
     compile(group: 'com.azazar', name: 'bitcoin-json-rpc-client', version: '1.0')
     compile(group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25')
@@ -33,13 +30,6 @@ dependencies {
     compile(group: 'com.google.zxing', name: 'core', version: '2.3.0')
     compile(group: 'org.knowm.xchange', name: 'xchange-bitfinex', version: '4.2.1')
     compile(group: 'org.knowm.xchange', name: 'xchange-itbit', version: '4.2.1')
-//    compile(group: 'net.iharder', name: 'base64', version: '2.3.9')
-//    compile(group: 'commons-io', name: 'commons-io', version: '2.4')
-//    compile(group: 'org.knowm.xchange', name: 'xchange-bitrex', version: '4.2.1')
-//    compile(group: 'org.knowm.xchange', name: 'xchange-poloniex', version: '4.2.1')
-//    compile(group: 'oauth.signpost', name: 'signpost-core', version: '1.2.1.2')
-//    compile(group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: '2.4.0')
-//    compile(group: 'com.fasterxml.jackson.core', name: 'jackson-core', version: '2.4.0')
 }
 
 dependencySubstitutions {

server_extensions_test/build.gradle

@@ -8,11 +8,6 @@ jar {
     baseName 'batm_server_extensions_test'
 }
 
-dependencies {
-    targetCompatibility = '1.7'
-    sourceCompatibility = '1.7'
-}
-
 dependencies {
     compile project(':server_extensions_api');
     compile project(':server_extensions_extra');