[armedbear-devel] Support for concatenated fasls

Erik Huelsmann ehuels at gmail.com
Wed Apr 3 21:26:05 UTC 2013

Hi Mark,

Thanks for your reaction. I have a better idea which always works and works
without searching for the entry: let's call the main entry point a constant
name: __loader__._

Actually in my local working copy, I already have done this and it works
like a charm even with the renaming scheme ASDF employs. Will commit in a
bit. Which probably means we can remove the fallback code (yay! simplicity!)




On Wed, Apr 3, 2013 at 11:16 PM, Mark Evenson <evenson at panix.com> wrote:

> On 4/3/13 10:39 PM, Erik Huelsmann wrote:
> > Hi!
> >
> > As we discussed, I'd write FASL concatenation support for ABCL. I'm
> > nearly done, however I'm running into a snag caused by ASDF:
> >
> > Normally, a file "package.lisp" is compiled into a fasl "package.abcl"
> > which is basically a zip with at least one entry: "package._". The "._"
> > file contains instructions for loading the fasl and may contain
> > references to other files in the same zip.
> >
> > My FASL concatenation code currently uses the assumption that the "._"
> > file has exactly the same name as the enclosing package. However, FASLs
> > generated using ASDF violate that assumption: the ._ file in the fasl
> > isn't called "package._" but it's called "package-ASDF_TMP._".
> >
> > How does ABCL know about the suffix when ASDF is loading the FASL
> > "package.abcl" with the suffixed file in it in the regular situation?
> The code in the java implementation of CL:LOAD, in Load.java:175 ff.
> makes an attempt to match a pathname with a wild NAME component if the
> fasl has been renamed.
> --
> "A screaming comes across the sky.  It has happened before, but there is
> nothing to compare it to now."
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