[CMake] ADD_CUSTOM_COMMAND

[Keyan]

hi,

i am tryting to build java code in my otherwise c++ project. for some reason, i just cant get add_custom_command to do what i want it to do. here are the lines of code that i am currently trying:

SET(MY_FILES FirstJavaFile SecondJavaFile)
SET(CLASS_FILES "")
SET(JAVA_FILES "")
FOREACH(f ${MY_FILES})
  SET(CLASS_FILES "${CLASS_FILES} ${PROJECT_BINARY_DIR}/${CLASS_DIR}/${f}.class")
  SET(JAVA_FILES "${JAVA_FILES} ${CMAKE_CURRENT_SOURCE_DIR}/${f}.java")
ENDFOREACH(f JAVA_FILES)
message("Java files:  \"${JAVA_FILES}\"")
message("Class files: \"${CLASS_FILES}\"")

# compile all .java files with javac to .class
ADD_CUSTOM_COMMAND(
    OUTPUT  ${CLASS_FILES}
    DEPENDS ${JAVA_FILES}
    COMMAND ${CMAKE_Java_COMPILER} ARGS -d ${PROJECT_BINARY_DIR}/${CLASS_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/*.java
)


From my understanding of what add_custom_command should be doing, this should compile FIrstJavaFile.java and SecondJavaFile.java to class files, if they have been changed. but it does nothing.

i am thankful for any tip.

regards,
keyan