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-rw-r--r--gnu/packages/javac.in61
1 files changed, 61 insertions, 0 deletions
diff --git a/gnu/packages/javac.in b/gnu/packages/javac.in
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@@ -0,0 +1,61 @@
+#!/usr/bin/perl -w
+
+# Taken from Gentoo:
+# http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/dev-java/gcj-jdk/files/javac.in
+
+use strict;
+use constant NO_DUP_ARGS => qw(-source -target -d -encoding);
+use constant STRIP_ARGS => qw(-Werror -implicit:none -J-Xbootclasspath/p:);
+
+my $ECJ_WARNINGS="-nowarn";
+
+my ( @bcoption, @source15, @target15, @cp );
+push @bcoption, '-bootclasspath', '@RT_JAR@:@TOOLS_JAR@'
+ unless grep {$_ eq '-bootclasspath'} @ARGV;
+push @source15, '-source', '1.5'
+ unless grep {$_ eq '-source'} @ARGV;
+push @target15, '-target', '1.5'
+ unless grep {$_ eq '-target'} @ARGV;
+push @cp, '-cp', '.'
+ unless grep {$_ =~ '\-c(p|lasspath)'} @ARGV or $ENV{CLASSPATH};
+my @ecj_parms = ($ECJ_WARNINGS, @bcoption, @source15, @target15, @cp);
+
+# Work around ecj's inability to handle duplicate command-line
+# options and unknown javac options.
+sub gen_ecj_opts
+{
+ my @new_args = @{$_[0]};
+
+ for my $opt (NO_DUP_ARGS)
+ {
+ my @indices = reverse grep {$new_args[$_] eq $opt} 0..$#new_args;
+ if (@indices > 1) {
+ shift @indices; # keep last instance only
+ splice @new_args, $_, 2 for @indices;
+ }
+ }
+
+ for my $opt (STRIP_ARGS)
+ {
+ my @indices = reverse grep {$new_args[$_] eq $opt} 0..$#new_args;
+ splice @new_args, $_, 1 for @indices;
+ }
+
+ return \@new_args;
+}
+
+sub split_vm_args
+{
+ my @new_args = @{$_[0]};
+
+ my @vm_args = map { substr $_, 2 } grep $_ =~ /^-J/, @new_args;
+ my @javac_args = grep $_ !~ /^-J/, @new_args;
+
+ return (\@vm_args, \@javac_args);
+}
+
+my ($vm_args, $javac_args) = split_vm_args (gen_ecj_opts( \@ARGV ));
+my @CLASSPATH = ('@ECJ_JAR@');
+push @CLASSPATH, split /:/, $ENV{"CLASSPATH"} if exists $ENV{"CLASSPATH"};
+$ENV{"CLASSPATH"} = join ':', @CLASSPATH;
+exec '@JAVA@', @$vm_args, 'org.eclipse.jdt.internal.compiler.batch.Main', @ecj_parms, @$javac_args;