Merge pull request #8993 from Cartucho:compiling_java_code

samples/CMakeLists.txt

@@ -11,6 +11,7 @@ if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_LIST_DIR)
 # ----------------------------------------------------------------------------
 
 add_subdirectory(cpp)
+add_subdirectory(java/tutorial_code)
 add_subdirectory(dnn)
 add_subdirectory(gpu)
 add_subdirectory(tapi)

samples/java/tutorial_code/CMakeLists.txt

+# ----------------------------------------------------------------------------
+#  CMake file for Java tutorials compilation.
+#
+# ----------------------------------------------------------------------------
+if(NOT ANT_EXECUTABLE OR NOT TARGET opencv_java)
+  return()
+endif()
+
+project(compile_java_tutorials)
+
+set(curdir "${CMAKE_CURRENT_SOURCE_DIR}")
+set(opencv_tutorial_java_bin_dir "${CMAKE_CURRENT_BINARY_DIR}/.compiled")
+set(TUTORIALS_DIRS "")
+
+file(GLOB children RELATIVE ${curdir} ${curdir}/*/*)
+foreach(child ${children})
+  if(IS_DIRECTORY ${curdir}/${child})
+    file(GLOB contains_java_files "${child}/*.java")
+    if(contains_java_files)
+      list(APPEND TUTORIALS_DIRS ${child})
+    endif()
+  endif()
+endforeach()
+
+add_custom_target("${PROJECT_NAME}"
+                  DEPENDS opencv_java
+                 )
+
+foreach(TUTORIAL_DIR ${TUTORIALS_DIRS})
+  get_filename_component(TUTORIAL_NAME ${TUTORIAL_DIR} NAME_WE)
+  add_custom_command(TARGET "${PROJECT_NAME}"
+                     COMMAND ${ANT_EXECUTABLE} -q
+                          -DocvJarDir="${OpenCV_BINARY_DIR}/bin"
+                          -DsrcDir="${TUTORIAL_DIR}"
+                          -DdstDir="${opencv_tutorial_java_bin_dir}/${TUTORIAL_NAME}"
+                     WORKING_DIRECTORY "${curdir}"
+                     COMMENT "Compile the tutorial: ${TUTORIAL_NAME}"
+                    )
+endforeach()

samples/java/tutorial_code/build.xml

+<project default="compile">
+
+    <property name="lib.dir"     value="${ocvJarDir}"/>
+    <path id="classpath">
+        <fileset dir="${lib.dir}" includes="**/*.jar"/>
+    </path>
+
+    <target name="compile">
+        <mkdir dir="${dstDir}"/>
+        <javac includeantruntime="false" srcdir="${srcDir}" destdir="${dstDir}" classpathref="classpath"/>
+    </target>
+
+</project>