headless AJDT build fails when upgrading java from 1.6 to 1.7

Question

strong texti have a very simple eclipse 3.8-based rcp application with an .aj file. i also have AJDT 2.2.1 installed, and have the following four entries in my build.properties:

javacSource=1.6
javacTarget=1.6

compilerAdapter=org.eclipse.ajdt.core.ant.AJDT_AjcCompilerAdapter
sourceFileExtensions=*.java, *.aj

i am using a headless build approach via Ant, and it has been working like a charm, AJDT and all, while using java 1.6. but once i upgraded from java 1.6 to 1.7, and changed the two aforementioned build.properties entries' -- javacSource and javacTarget -- values from 1.6 to 1.7, i got a boat-load of build errors, all with the following suffix:

... are only available if source level is 1.5 or greater

setting build.properties' javacSource back to 1.6, while leaving javacTarget at 1.7 works. or if i were to comment out the two AJDT-specific entries from my build.properties, while leaving javacSource and javacTarget values at 1.7. the build completes just fine as well. so my guess is that AJDT compiler is somehow the culprit. the question is why and what can be done to resolve it.

thank you for your time!!!

Answer 1

It sounds like one of two things:

1. Your AJDT installed does not have an AspectJ in it that is compatible with Java 1.7. What AspectJ version are you building with? Note that this aspectj version may be different from the one in your target platform.
2. You are not correctly specifying the Java source/target version in a way that AspectJ can recognize. How are you specifying the Java source/target version?