bug#26966: [PATCH 05/22] gnu: Add ecj-bootstrap.

[Roel Janssen <roel@gnu.org>]

Ricardo Wurmus writes:

> * gnu/packages/java.scm (ecj-bootstrap): New variable.
> ---
>  gnu/packages/java.scm | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 69 insertions(+)
>
> diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
> index b12d641ff..b3883bf7a 100644
> --- a/gnu/packages/java.scm
> +++ b/gnu/packages/java.scm
> @@ -254,6 +254,75 @@ and is best suited to building Java projects.  Ant uses XML to describe the
>  build process and its dependencies, whereas Make uses Makefile format.")
>      (license license:asl2.0)))
>  
> +;; Version 3.2.2 is the last version without a dependency on a full-fledged
> +;; compiler for Java 1.5.
> +(define ecj-bootstrap
> +  (package
> +    (name "ecj-bootstrap")
> +    (version "3.2.2")
> +    (source (origin
> +              (method url-fetch)
> +              (uri (string-append "http://archive.eclipse.org/eclipse/"
> +                                  "downloads/drops/R-" version
> +                                  "-200702121330/ecjsrc.zip"))
> +              (sha256
> +               (base32
> +                "05hj82kxd23qaglsjkaqcj944riisjha7acf7h3ljhrjyljx8307"))))
> +    ;; It would be so much easier if we could use the ant-build-system, but we
> +    ;; cannot as we don't have ant at this point.  We use ecj for
> +    ;; bootstrapping the JDK.
> +    (build-system gnu-build-system)
> +    (arguments
> +     `(#:modules ((guix build gnu-build-system)
> +                  (guix build utils)
> +                  (srfi srfi-1))
> +       #:tests? #f ; there are no tests
> +       #:phases
> +       (modify-phases %standard-phases
> +         (replace 'configure
> +           (lambda* (#:key inputs #:allow-other-keys)
> +             (setenv "CLASSPATH"
> +                     (string-join
> +                      (find-files (string-append (assoc-ref inputs "ant-bootstrap")
> +                                                 "/lib")
> +                                  "\\.jar$")
> +                      ":"))
> +             #t))
> +         (replace 'build
> +           (lambda* (#:key inputs #:allow-other-keys)
> +             ;; The unpack phase enters the "org" directory by mistake.
> +             (chdir "..")
> +
> +             ;; Create a simple manifest to make ecj executable.
> +             (with-output-to-file "manifest"
> +               (lambda _
> +                 (display "Manifest-Version: 1.0
> +Main-Class: org.eclipse.jdt.internal.compiler.batch.Main\n")))
> +
> +             ;; Compile it all!
> +             (and (zero? (apply system* "javac-sablevm"
> +                                (find-files "." "\\.java$")))
> +                  (zero? (system* "fastjar" "cvfm"
> +                                  "ecj-bootstrap.jar" "manifest" ".")))))
> +         (replace 'install
> +           (lambda* (#:key outputs #:allow-other-keys)
> +             (let ((share (string-append (assoc-ref outputs "out")
> +                                         "/share/java/")))
> +               (mkdir-p share)
> +               (install-file "ecj-bootstrap.jar" share)
> +               #t))))))
> +    (native-inputs
> +     `(("ant-bootstrap" ,ant-bootstrap)
> +       ("unzip" ,unzip)
> +       ("sablevm" ,sablevm)
> +       ("fastjar" ,fastjar)))
> +    (home-page "https://eclipse.org")
> +    (synopsis "Eclipse Java development tools core batch compiler")
> +    (description "This package provides the Eclipse Java core batch compiler
> +for bootstrapping purposes.  The @dfn{Eclipse compiler for Java} (ecj) is a
> +requirement for all GNU Classpath releases after version 0.93.")
> +    (license license:epl1.0)))
> +
>  (define-public java-swt
>    (package
>      (name "java-swt")

LGTM!

Kind regards,
Roel Janssen