--with-openjdk bootstrap

[Dr Andrew John Hughes]

On 13:45 Sat 31 Jul     , DJ Lucas wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Is there a simple way to do a three pass bootstrap when using the
> - --with-openjdk flag?  I browsed through the Makefile and didn't see
> anything promising, but figured I'd ask those more familiar in case I
> missed something obvious.  I do plan to distribute a binary icedtea6
> package in BLFS, however, there are some users who will still want to
> build it themselves.  Easiest way I can think of to cover those users is
> to install the bin package and let users bootstrap with that.
> 
> Any pointers?
> 
> - -- DJ Lucas
> 
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.15 (GNU/Linux)
> 
> iQIcBAEBAgAGBQJMVG9GAAoJEIUM+xKzBYsIYBAP/2pGLv4GBZpnzfVN1Cc2roXv
> WdXO4gghvVlm4Loir+UgO2Gm/8WeGk4Uw93fowjaf4pHHWOGJnl2fAW+ddJSX7Ts
> 4mER8Cy2pbk11eG7pxWtlWlMCY5JSmFOcQOcNUWQnck8dECY5JTOinFhUt2bnJId
> 3fuWKOXd6AR965jwAGDhf0WcaSk9n9TScg9SotZ9HuYLG9vr5iWaf7KJJLCeSduk
> EXGPuocgBmnSvkv+6G+sQ2vEAd4tNhYf+eHLM+3LJkPdAixX/4t287sJ8P/dTdJn
> reYoUDWYvG6vF/0b/1rfv3BKRFM5JF/EAU7CosL0rsWB93yu1XpQgzVlNekA2918
> eBfkxxWq6IrXoRB7S1mrlPtV3zo0Vl9y1uoG8Qx9GqcIszZRoaLTA7gQlDOnPDD4
> SpivqiMBKEYQvrWFwE6cSbWIghiiITHFaeVKbwJcX2M24pDo0ffTXwnIGLkcG6gE
> GV+g3B9r4GWkSl96+Dxjta2r50/4gWbHD8vHChethTr2Lr6iD4qGbURkhpd7LWv3
> pfux5fehizFuOy05DUYThf36KAUP/qEvCLeN+B5Yf+vZi1EGBc96gQ8RviGl2wFP
> Jz/UefJ1/EAg+YegdXJxCp5u7MxyD58OWckNzh4T2IYXkWJHN0N2mFo1M0h1oUGD
> tSS/+SUCM7Y7d4qQ4sFa
> =wrym
> -----END PGP SIGNATURE-----
> 
> -- 
> This message has been scanned for viruses and
> dangerous content, and is believed to be clean.
> 

--with-openjdk, as it stands in IcedTea6, is a pretty nasty option
because it has two meanings:

1.  Don't perform the bootstrap build
2.  Use the specified JDK (if an argument is given) or pick the first
JDK found from the following list:

/usr/lib/jvm/java-openjdk 
/usr/lib/jvm/openjdk
/usr/lib/jvm/icedtea6
/usr/lib/jvm/java-6-openjdk
/usr/lib/jvm/java-icedtea

Preferably, these should be two separate options; one to turn off the
bootstrap and another to specify the JDK.  That's a change I've already
made in the Java 7 version of IcedTea (IcedTea7) but which hasn't yet
been backported to IcedTea6.  Hopefully, it will be changed for IcedTea6
1.10 but that probably won't appear until the end of the year.

Within the current setup, there are a couple of options for you:

* Build using gcj which will give you the full bootstrap.  This also
avoids having to use any binaries (with your current proposal, those
who want to build IcedTea would have to install your IcedTea binary
first).  This is a well-tested option and the one I'd suggest.  I
don't really see why you want to use the --with-openjdk flag to begin
with.
* Force a full bootstrap with IcedTea using
--with-gcj-home=<location of IcedTea>.  This is likely to run into 
issues.  If so, please post them to the list as they need resolving.

Please let us know what you decide,
Thanks,
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

Support Free Java!
Contribute to GNU Classpath and the OpenJDK
http://www.gnu.org/software/classpath
http://openjdk.java.net
PGP Key: 94EFD9D8 (http://subkeys.pgp.net)
Fingerprint = F8EF F1EA 401E 2E60 15FA  7927 142C 2591 94EF D9D8