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{ stdenv, fetchurl, unzip, ant, gcj }:
let
version = "3.7.2";
date = "201202080800";
isGCJ = stdenv.lib.strings.substring 0 3 gcj.name == "gcj";
javaExec = if isGCJ then "gij" else "java";
javaFlags = if isGCJ then "--cp" else "-cp";
in
stdenv.mkDerivation rec {
name = "ecj-${version}";
src = fetchurl {
url = "http://eclipse.ialto.org/eclipse/downloads/drops/R-${version}-${date}/ecjsrc-${version}.jar";
sha256 = "0swyysbyfmv068x8q1c5jqpwk5zb4xahg17aypx5rwb660f8fpbm";
};
buildInputs = [ unzip ant gcj ];
unpackPhase = ''
mkdir "${name}"
cd "${name}"
unzip "$src"
'';
# Use whatever compiler Ant knows.
buildPhase = "ant build";
installPhase = ''
mkdir -pv "$out/lib/java"
cp -v *.jar "$out/lib/java"
mkdir -pv "$out/bin"
cat > "$out/bin/ecj" <<EOF
#! /bin/sh
exec "$(type -P ${javaExec})" ${javaFlags} "$out/lib/java/ecj.jar" org.eclipse.jdt.internal.compiler.batch.Main \$@
EOF
chmod u+x "$out/bin/ecj"
'';
meta = {
description = "The Eclipse Compiler for Java (ECJ)";
longDescription = ''
ECJ is an incremental Java compiler. Implemented as an Eclipse
builder, it is based on technology evolved from VisualAge for Java
compiler. In particular, it allows users to run and debug code which
still contains unresolved errors.
'';
homepage = http://www.eclipse.org/jdt/core/index.php;
# http://www.eclipse.org/legal/epl-v10.html (free software, copyleft)
license = "EPLv1.0";
maintainers = [ stdenv.lib.maintainers.ludo ];
};
}
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