Ricardo Wurmus <ricardo.wur...@mdc-berlin.de> skribis:
> this patch adds the GNU Compiler for Java to the gcc module. We need
> GCJ to build IcedTea6 / OpenJDK, which in turn could be used to build
> IcedTea7.
Nice!
> GCJ unfortunately has a binary dependency, the Eclipse Compiler for
> Java. GCJ expects to be given the path of the ecj.jar at compile time.
> ECJ is provided as ecj-bootstrap-4.8. I don't know if GCJ is built such
> that this ECJ binary is no longer required at the end (but I know that
> IcedTea6 also needs the ECJ jar). For IcedTea6 we could compile ECJ
> from source with GCJ, but I don't know how to deal with GCJ's dependency
> on ECJ. Having it depend on a binary is ugly.
Well it’s a bootstrapping issue–same problem as for GHC, MIT/GNU Scheme,
or the whole distro actually. I wouldn’t be surprised if ecj.jar cannot
be avoided at all.
> GCJ is built with options to create symlinks to function as a primitive
> JDK. It does not provide wrappers for javap and javac, so these are
> added in an extra phase. I took the javac perl wrapper from Gentoo, but
> I suppose a script in Guile might be nicer (there is no official
> upstream source for the wrapper script, so we might as well roll our
> own).
Yeah, something nice to have for later. :-)
> From 56f43a9042853aca79f60808a51d328dfbe420a3 Mon Sep 17 00:00:00 2001
> From: Ricardo Wurmus <ricardo.wur...@mdc-berlin.de>
> Date: Tue, 23 Dec 2014 12:31:50 +0100
> Subject: [PATCH] gnu: Add GCJ
>
> * gnu/packages/gcc.scm (gcj-4.8, ecj-bootstrap-4.8): New variable.
> * gnu/packages/javac.in: New file.
You need something like this in gnu-system.am:
MISC_DISTRO_FILES = gnu/packages/javac.in
and in Makefile.am, change the nobase_dist_guilemodule_DATA line to:
nobase_dist_guilemodule_DATA = \
$(MODULES) $(KCONFIGS) $(EXAMPLES) \
$(MISC_DISTRO_FILES)
> + (inputs
> + (append (package-inputs gcc-4.8)
> + `(("fastjar" ,fastjar)
> + ("perl" ,perl)
> + ("javac.in" ,(search-path %load-path
> + "gnu/packages/javac.in"))
> + ("ecj-bootstrap" ,ecj-bootstrap-4.8))))
Minor issue: I would avoid comma alignment and use quasiquote +
unquote-splicing rather than ‘append’.
> +(define-public ecj-bootstrap-4.8
> + (package
> + (name "ecj-bootstrap")
> + (version "4.8")
> + (source (origin
> + (method url-fetch)
> + (uri (string-append "ftp://sourceware.org/pub/java/ecj-";
> version ".jar"))
> + (sha256
> + (base32
> + "10fpqfbdzff1zcbxzh66xc8xbij9saykcj4xzm19wk9p3n7i5zcq"))))
It’s enough to make it an ‘origin’, and to keep it private:
(define ecj-bootstrap-4.8
(origin
(method ...)
...))
Thanks,
Ludo’.
