various cleanups in the CMakeLists.txt files

[simgrid.git] / examples / java / bittorrent / CMakeLists.txt

diff --git a/examples/java/bittorrent/CMakeLists.txt b/examples/java/bittorrent/CMakeLists.txt
index d96d4cd..04310a5 100644 (file)
--- a/examples/java/bittorrent/CMakeLists.txt
+++ b/examples/java/bittorrent/CMakeLists.txt
@@ -1,44 +1,32 @@
-cmake_minimum_required(VERSION 2.6)
-
-set(sources
-  ${CMAKE_CURRENT_SOURCE_DIR}/Bittorrent.java
-  ${CMAKE_CURRENT_SOURCE_DIR}/Common.java
-  ${CMAKE_CURRENT_SOURCE_DIR}/Connection.java
-  ${CMAKE_CURRENT_SOURCE_DIR}/MessageTask.java
-  ${CMAKE_CURRENT_SOURCE_DIR}/Peer.java
-  ${CMAKE_CURRENT_SOURCE_DIR}/Tracker.java
-  ${CMAKE_CURRENT_SOURCE_DIR}/TrackerTask.java
-  )
+set(example java_bittorrent)
+set(sources Bittorrent.java Common.java Connection.java MessageTask.java Peer.java Tracker.java TrackerTask.java)
 
 if(enable_java)
-  add_custom_target(java_bittorrent ALL
-    COMMAND ${JAVA_COMPILE} -cp ${CMAKE_BINARY_DIR}/simgrid.jar
-                            -d ${CMAKE_CURRENT_BINARY_DIR}/.. ${sources})
-  add_dependencies(java_bittorrent SG_java_jar)
+  add_custom_command(
+    COMMENT "Building ${example}..."
+    OUTPUT ${example}_compiled
+    DEPENDS ${sources} simgrid-java_jar ${SIMGRID_JAR}
+    COMMAND ${JAVA_COMPILE} -classpath ${SIMGRID_JAR}
+                             -d ${CMAKE_CURRENT_BINARY_DIR}/.. ${sources}
+    COMMAND ${CMAKE_COMMAND} -E remove ${example}_compiled
+    COMMAND ${CMAKE_COMMAND} -E touch ${example}_compiled
+  )
+  add_custom_target(${example} ALL DEPENDS ${example}_compiled)
 endif()
 
 set(tesh_files
   ${tesh_files}
-  examples/bittorrent/bittorrent.tesh
-  PARENT_SCOPE
-  )
+  ${CMAKE_CURRENT_SOURCE_DIR}/bittorrent.tesh
+  PARENT_SCOPE)
 set(xml_files
   ${xml_files}
   ${CMAKE_CURRENT_SOURCE_DIR}/bittorrent.xml
-  PARENT_SCOPE
-  )
+  PARENT_SCOPE)
 set(examples_src
   ${examples_src}
   ${sources}
-  PARENT_SCOPE
-  )
-set(bin_files
-  ${bin_files}
-  PARENT_SCOPE
-  )
+  PARENT_SCOPE)
 set(txt_files
   ${txt_files}
   ${CMAKE_CURRENT_SOURCE_DIR}/generate.py
-  PARENT_SCOPE
-  )
-
+  PARENT_SCOPE)