$ make -j2 -sr CustomTarget_odk/build-examples CustomTarget_odk/build-examples_java
[CHK] CustomTarget/odk/build-examples.done
[CHK] CustomTarget/odk/build-examples_java.done

 ************************************************************************
 *
 * SDK environment is prepared for Linux
 *
 * SDK = /home/vmiklos/git/libreoffice/master/instdir/sdk
 * Office = /home/vmiklos/git/libreoffice/master/instdir
 * Make =
 * Zip =
 * cat =
 * sed =
 * C++ Compiler =
 * Java = /usr/lib64/jvm/java-1.8.0-openjdk
 * SDK Output directory = /home/vmiklos/git/libreoffice/master/workdir/CustomTarget/odk/build-examples_java/out/sdk
 * Auto deployment = YES
 *
 ************************************************************************
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
added manifest
adding: SampleDialog.uno.Manifest(in = 67) (out= 64)(deflated 4%)
adding: com/(in = 0) (out= 0)(stored 0%)
adding: com/sun/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/sdk/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/sdk/examples/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/sdk/examples/SampleDialog$ActionListenerImpl.class(in = 1487) (out= 738)(deflated 50%)
adding: com/sun/star/comp/sdk/examples/SampleDialog.class(in = 5459) (out= 2511)(deflated 54%)
  adding: SampleDialog.uno.jar (stored 0%)
added manifest
  adding: META-INF/manifest.xml (deflated 39%)
adding: SampleDialog.uno.Manifest(in = 67) (out= 64)(deflated 4%)
adding: com/(in = 0) (out= 0)(stored 0%)
adding: com/sun/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/sdk/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/sdk/examples/(in = 0) (out= 0)(stored 0%)
adding: com/sun/star/comp/sdk/examples/SampleDialog$ActionListenerImpl.class(in = 1487) (out= 738)(deflated 50%)
adding: com/sun/star/comp/sdk/examples/SampleDialog.class(in = 5459) (out= 2511)(deflated 54%)
adding: SampleDialog/(in = 0) (out= 0)(stored 0%)
adding: SampleDialog/META-INF/(in = 0) (out= 0)(stored 0%)
adding: SampleDialog/META-INF/manifest.xml(in = 387) (out= 236)(deflated 39%)
  adding: SampleDialog.uno.jar (deflated 23%)
  adding: META-INF/manifest.xml (deflated 39%)
ERROR: unopkg cannot be started. The lock file indicates it is already running. If this does not apply, delete the lock file at:
/home/vmiklos/git/libreoffice/master/workdir/CustomTarget/odk/build-examples_java/user/.lock
warn:unotools.config:21909:21909:unotools/source/config/configmgr.cxx:168: ConfigManager not empty
Makefile:110: recipe for target '/home/vmiklos/git/libreoffice/master/workdir/CustomTarget/odk/build-examples_java/out/sdk/LINUXexample.out/misc/devguide_basicanddialogs_creatingdialogs_register_component.flag' failed
make[1]: *** [/home/vmiklos/git/libreoffice/master/workdir/CustomTarget/odk/build-examples_java/out/sdk/LINUXexample.out/misc/devguide_basicanddialogs_creatingdialogs_register_component.flag] Error 1
/home/vmiklos/git/libreoffice/master/odk/build-examples_common.mk:6: recipe for target '/home/vmiklos/git/libreoffice/master/workdir/CustomTarget/odk/build-examples.done' failed
make: *** [/home/vmiklos/git/libreoffice/master/workdir/CustomTarget/odk/build-examples.done] Error 2
make: *** Waiting for unfinished jobs....