Can't build latest openjdk6

[Martin Buchholz]

When I try to build latest hg openjdk6, I get:


build-classes-javac:
    [mkdir] Created dir:
/home/martinrb/ws/openjdk6/build/linux-amd64/langtools/build/gensrc
    [mkdir] Created dir:
/home/martinrb/ws/openjdk6/build/linux-amd64/langtools/build/classes
 [pcompile] Generating 7 resource files to
/home/martinrb/ws/openjdk6/build/linux-amd64/langtools/build/gensrc
     [copy] Copying 1 file to
/home/martinrb/ws/openjdk6/build/linux-amd64/langtools/build/gensrc
 [pcompile] Generating 1 resource files to
/home/martinrb/ws/openjdk6/build/linux-amd64/langtools/build/gensrc
    [javac] Compiling 8 source files to
/home/martinrb/ws/openjdk6/build/linux-amd64/langtools/build/classes
    [javac] javac: source release 6 requires target release 1.6

BUILD FAILED
/usr/local/google/home/martin/ws/openjdk6/langtools/make/build.xml:196:
The following error occurred while executing this line:
/usr/local/google/home/martin/ws/openjdk6/langtools/make/build.xml:525:
Compile failed; see the compiler error output for details.


whether or not I use a vanilla jdk6 (or even jdk7) as bootstrap jdk

Can anyone else successfully build openjdk6?
If so, what is the secret?
Did I miss something in my inbox?

Martin