Gentoo Archives: gentoo-java

From: Caster <cast3r@××××××.cz>
To: gentoo-java@l.g.o
Subject: Re: [gentoo-java] Re: How to predetermine if ebuilds will compile with 1.5?
Date: Tue, 06 Jun 2006 09:18:40
Message-Id: 44854829.4000002@seznam.cz
In Reply to: Re: [gentoo-java] Re: How to predetermine if ebuilds will compile with 1.5? by David Herron
1 Greg Tassone wrote:
2 > I think this statement is a little too broad to be considered correct.
3 > The compiler can (and often does) make changes to the resulting binaries
4 > that may be VM-level specific (e.g., targeted for a 1.5 VM). Consider
5 > the "-target" argument for javac, for example, which "Allow[s] javac to
6 > use 1.5 specific features in the libraries and virtual
7 > machine" (http://java.sun.com/j2se/1.5.0/docs/relnotes/features.html ).
8 >
9 David Herron wrote:
10 >
11 > er... Caster, the bytecode does vary based on the compiler. And the
12 > class file format has varied a small amount from release to release with
13 > the 1.5 class file format being the most different.
14 >
15 > This is, as I understand it, the crux of the problem you guys are seeing
16 > with adopting 1.5 ... yes?
17 >
18
19 Sorry, I wasn't clear enough. I didn't mean the class file format which
20 is indeed different and causes problems. I was trying to ask if there
21 are any (the compiled bytecode performance?) gains of using 1.5 compiler
22 for 1.4 source (without specifying --source and --target 1.4). This
23 source won't use any 1.5 specific features, but you say the bytecode
24 still can somehow?
25
26 Caster
27
28 --
29 gentoo-java@g.o mailing list

Replies

Subject Author
Re: [gentoo-java] Re: How to predetermine if ebuilds will compile with 1.5? David Herron <David.Herron@×××.COM>