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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix build ant-build-system)
#:use-module ((guix build gnu-build-system) #:prefix gnu:)
#:use-module (guix build syscalls)
#:use-module (guix build utils)
#:use-module (sxml simple)
#:use-module (ice-9 match)
#:use-module (ice-9 ftw)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (%standard-phases
ant-build))
;; Commentary:
;;
;; Builder-side code of the standard build procedure for Java packages using
;; Ant.
;;
;; Code:
(define (default-build.xml jar-name prefix)
"Create a simple build.xml with standard targets for Ant."
(call-with-output-file "build.xml"
(lambda (port)
(sxml->xml
`(project (@ (basedir "."))
(property (@ (name "classes.dir")
(value "${basedir}/build/classes")))
(property (@ (name "jar.dir")
(value "${basedir}/build/jar")))
(property (@ (name "dist.dir")
(value ,prefix)))
;; respect the CLASSPATH environment variable
(property (@ (name "build.sysclasspath")
(value "first")))
(property (@ (environment "env")))
(path (@ (id "classpath"))
(pathelement (@ (location "${env.CLASSPATH}"))))
(target (@ (name "compile"))
(mkdir (@ (dir "${classes.dir}")))
(javac (@ (includeantruntime "false")
(srcdir "src")
(destdir "${classes.dir}")
(classpath (@ (refid "classpath"))))))
(target (@ (name "jar")
(depends "compile"))
(mkdir (@ (dir "${jar.dir}")))
(exec (@ (executable "jar"))
(arg (@ (line ,(string-append "-cf ${jar.dir}/" jar-name
" -C ${classes.dir} ."))))))
(target (@ (name "install"))
(copy (@ (todir "${dist.dir}"))
(fileset (@ (dir "${jar.dir}"))
(include (@ (name "**/*.jar")))))))
port)))
(utime "build.xml" 0 0)
#t)
(define (generate-classpath inputs)
"Return a colon-separated string of full paths to jar files found among the
INPUTS."
(string-join
(apply append (map (match-lambda
((_ . dir)
(find-files dir "\\.*jar$")))
inputs)) ":"))
(define* (configure #:key inputs outputs (jar-name #f)
#:allow-other-keys)
(when jar-name
(default-build.xml jar-name
(string-append (assoc-ref outputs "out")
"/share/java")))
(setenv "JAVA_HOME" (assoc-ref inputs "jdk"))
(setenv "CLASSPATH" (generate-classpath inputs)))
(define* (build #:key (make-flags '()) (build-target "jar")
#:allow-other-keys)
(zero? (apply system* `("ant" ,build-target ,@make-flags))))
(define* (strip-jar-timestamps #:key outputs
#:allow-other-keys)
"Unpack all jar archives, reset the timestamp of all contained files, and
repack them. This is necessary to ensure that archives are reproducible."
(define (repack-archive jar)
(format #t "repacking ~a\n" jar)
(let* ((dir (mkdtemp! "jar-contents.XXXXXX"))
(manifest (string-append dir "/META-INF/MANIFEST.MF")))
(and (with-directory-excursion dir
(zero? (system* "jar" "xf" jar)))
(delete-file jar)
;; XXX: copied from (gnu build install)
(for-each (lambda (file)
(let ((s (lstat file)))
(unless (eq? (stat:type s) 'symlink)
(utime file 0 0 0 0))))
(find-files dir #:directories? #t))
;; The jar tool will always set the timestamp on the manifest file
;; and the containing directory to the current time, even when we
;; reuse an existing manifest file. To avoid this we use "zip"
;; instead of "jar". It is important that the manifest appears
;; first.
(with-directory-excursion dir
(let* ((files (find-files "." ".*" #:directories? #t))
(command (if (file-exists? manifest)
`("zip" "-X" ,jar ,manifest ,@files)
`("zip" "-X" ,jar ,@files))))
(unless (zero? (apply system* command))
(error "'zip' failed"))))
(utime jar 0 0)
#t)))
(every (match-lambda
((output . directory)
(every repack-archive (find-files directory "\\.jar$"))))
outputs))
(define* (check #:key target (make-flags '()) (tests? (not target))
(test-target "check")
#:allow-other-keys)
(if tests?
(zero? (apply system* `("ant" ,test-target ,@make-flags)))
(begin
(format #t "test suite not run~%")
#t)))
(define* (install #:key (make-flags '()) #:allow-other-keys)
(zero? (apply system* `("ant" "install" ,@make-flags))))
(define %standard-phases
(modify-phases gnu:%standard-phases
(replace 'configure configure)
(replace 'build build)
(replace 'check check)
(replace 'install install)
(add-after 'install 'strip-jar-timestamps strip-jar-timestamps)))
(define* (ant-build #:key inputs (phases %standard-phases)
#:allow-other-keys #:rest args)
"Build the given Java package, applying all of PHASES in order."
(apply gnu:gnu-build #:inputs inputs #:phases phases args))
;;; ant-build-system.scm ends here
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