[oe] cacao-native 1.6.1 failing because compiler not produced?

[Xen]

I just symlinked the required files to /usr/bin/java and it proceeded.

Next up the C++ compiler refuses a negative left hand value in a left 
shift in

build/tmp-glibc/work/armv5e-oe-linux-gnueabi/openjdk-7-jre/99b00-2.6.5-r6.1/icedtea-2.6.5/build/openjdk/hotspot/src/share/vm/code/dependencies.hpp

     all_types           = ((1 << TYPE_LIMIT) - 1) & ((-1) << 
FIRST_TYPE),

But that was not the only one. So much pain.

Botched up the hotspot tree, trying to rerun -c unpack and -c patch and 
-c configure but not working...

Not a great way to spend your evening.

Eventually bitbake openjdk-7-jre -C configure caused it to configure 
again.

I hoped I could pass environment variable OE_CXXFLAGS but that didn 
work. Changing meta/conf/bitbake.conf caused the entire build to be 
invalidated, oops. Of course, bit to be expected.

Already spent at least an hour trying to get a CXXFLAG to be 
recognised...

And will take many more hours now...

Really useful that you can't shift -1 but ~0 also doesn't work. But I 
find it impossible to get any values passed through the bitbake command?

CXXFLAGS doesn'st work, EXTRA_CFLAGS doesn't work, OE_CXXFLAGS doesn't 
work, changing the entire bitbake.conf doesn't work.

Already not worth that much to me anymore...

Well, I'm sorry for this ranting. Trying gcc 5.4.0 to see if that works.