add_jar: add option GENERATE_NATIVE_HEADERS

Tests/JavaNativeHeaders/CMakeLists.txt

@@ -0,0 +1,18 @@
+project(helloJavaNativeHeaders Java CXX)
+
+cmake_minimum_required (VERSION 2.6)
+set(CMAKE_VERBOSE_MAKEFILE 1)
+
+find_package(Java COMPONENTS Development)
+include (UseJava)
+
+# JNI support
+find_package(JNI)
+
+add_jar(B1 D.java GENERATE_NATIVE_HEADERS D1-native)
+add_jar(E1 E.java GENERATE_NATIVE_HEADERS E1-native)
+
+add_jar(hello4 HelloWorld3.java)
+
+add_library(D SHARED D.cpp E.cpp)
+target_link_libraries (D PRIVATE D1-native E1-native)

Tests/JavaNativeHeaders/D.cpp

@@ -0,0 +1,10 @@
+
+#include <jni.h>
+#include <stdio.h>
+
+#include "D.h"
+
+JNIEXPORT void JNICALL Java_D_printName(JNIEnv*, jobject)
+{
+  printf("D\n");
+}

Tests/JavaNativeHeaders/D.java

@@ -0,0 +1,19 @@
+class D
+{
+  public D()
+    {
+    }
+
+    public native void printName();
+
+    static {
+        try {
+
+            System.loadLibrary("D");
+
+        } catch (UnsatisfiedLinkError e) {
+            System.err.println("Native code library failed to load.\n" + e);
+            System.exit(1);
+        }
+    }
+}

Tests/JavaNativeHeaders/E.cpp

@@ -0,0 +1,10 @@
+
+#include <jni.h>
+#include <stdio.h>
+
+#include "E.h"
+
+JNIEXPORT void JNICALL Java_E_printName(JNIEnv*, jobject)
+{
+  printf("E\n");
+}

Tests/JavaNativeHeaders/E.java

@@ -0,0 +1,19 @@
+class E
+{
+  public E()
+    {
+    }
+
+    public native void printName();
+
+    static {
+        try {
+
+            System.loadLibrary("D");
+
+        } catch (UnsatisfiedLinkError e) {
+            System.err.println("Native code library failed to load.\n" + e);
+            System.exit(1);
+        }
+    }
+}

Tests/JavaNativeHeaders/HelloWorld3.java

@@ -0,0 +1,15 @@
+class HelloWorld3
+{
+    public static void main(String args[])
+    {
+        D d;
+        d = new D();
+        d.printName();
+
+        E e;
+        e = new E();
+        e.printName();
+
+        System.out.println("Hello World!");
+    }
+}