[armedbear-devel] No :DARWIN, "No tag" & no ASDF

John Pallister john at synchromesh.com
Tue Oct 6 09:54:21 UTC 2009

Hi Mark,

Thanks for the Emacs notes. I'll fold those into my setup. I agree
that CEDET looks a little daunting.

I just installed OpenJDK 6 from MacPorts. I thought it'd be good to
have Java 6 for the JSR-223 stuff, and I'm not in a huge hurry to
upgrade to OS X 10.6 (a.k.a. Snow Leopard, which has the Apple Java 6
JDK). SoyLatte (now folded into OpenJDK) seemed the easiest way to go.
I don't know what the relation is to the latest Sun JDK release.


John :^P

On Tue, Oct 6, 2009 at 10:30 AM, Mark Evenson <evenson at panix.com> wrote:
> On 10/5/09 5:47 PM, John Pallister wrote:
> […]
>> When I build ABCL, I get the warning "Use of Java version
>> 1.6.0-internal not recommended." Perhaps '<matches
>> string="${java.version}" pattern="1\.6\.0-internal"/>' could be added
>> to the appropriate spot in build.xml to suppress this warning.
> Maybe we should invert the test so we only emit the warning if we match
> 'java.version' for values of '1.6.0_1' through '1.6.0_9'?  The sense
> being that we only know that we have problems with the Sun JDK 6
> releases from U1 through U9.
> Some background might be in order.  For reasons that were never clear,
> but attributed to problems with the huge number of classes that ABCL
> generates (mostly from the "one per CONS" requirement), performance
> seemed subjectively slow under JDK 6, and was backed objectively by
> benchmarking the time it took ABCL to a) run the ANSI test suite, and to
> b) compile its own Lisp classes.  Some guesses were made as to the cause
> of the problem, but by the time we got serious about thinking about
> implementing the rather involved strategies that seemed like it might
> help, jdk-1.6.0_10 was released with dramatically improved performance.
> John:  how did you build your OpenJDK6?  Or did you get binaries from
> somewhere?  I just built the version in MacPorts to test ABCL with,
> seeing the same '1.6.0-internal' version string in 'java.version'.  The
> MacPorts port metadata claims this is 'b16', which seems to be the last
> change in the [OpenJDK6 mercurial repository][1].  Does 'b16' correspond
> to 'u16' in the Sun JDK release?
> [1]: http://hg.openjdk.java.net/jdk6/jdk6
> --
> "A screaming comes across the sky.  It has happened before, but there
> is nothing to compare to it now."
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