Re: [patch] update ecj to ecj-3.8.2/4.2.2

[Matthias Klose <doko@ubuntu.com>]

Am 15.04.2013 15:28, schrieb Andrew Hughes:
> ----- Original Message -----
>> The ecj.jar provided on ftp://gcc.gnu.org/pub/java wasn't updated anymore
>> since
>> 2008, having no support for java7.  It looks like this ecj is already used
>> within the Fedora disto, however only locally patched (at least I couldn't
>> find
>> any mail sent to java-patches).
>>
>> Find attached the changes required to build a new ecj.jar from the R3_8_2 git
>> tag.  The built files can be found at
>> http://people.debian.org/~doko/tmp/eclipse-gcj/. The resulting gcj -C looks
>> fine, building libjava with the new ecj.jar doesn't show any regressions, and
>> the testsuite doesn't show any regressions.  However the filenames for some
>> generated class and header files have changed for inner classes:
>>
>> $ svn status|grep UIDefaults|sort -k1
>> !       classpath/lib/javax/swing/UIDefaults$1.class
>> !       classpath/lib/javax/swing/UIDefaults$2.class
>> !       classpath/lib/javax/swing/UIDefaults$3.class
>> !       classpath/lib/javax/swing/UIDefaults$4.class
>> ?       classpath/lib/javax/swing/UIDefaults$ProxyLazyValue$1.class
>> ?       classpath/lib/javax/swing/UIDefaults$ProxyLazyValue$2.class
>> ?       classpath/lib/javax/swing/UIDefaults$ProxyLazyValue$3.class
>> ?       classpath/lib/javax/swing/UIDefaults$ProxyLazyValue$4.class
>> !       javax/swing/UIDefaults$1.h
>> !       javax/swing/UIDefaults$2.h
>> !       javax/swing/UIDefaults$3.h
>> !       javax/swing/UIDefaults$4.h
>> ?       javax/swing/UIDefaults$ProxyLazyValue$1.h
>> ?       javax/swing/UIDefaults$ProxyLazyValue$2.h
>> ?       javax/swing/UIDefaults$ProxyLazyValue$3.h
>> ?       javax/swing/UIDefaults$ProxyLazyValue$4.h
>> M       classpath/lib/javax/swing/plaf/basic/SharedUIDefaults.class
>> M       classpath/lib/javax/swing/UIDefaults.class
>> M       classpath/lib/javax/swing/UIDefaults$ProxyLazyValue.class
>> M
>> classpath/lib/javax/swing/UIManager$MultiplexUIDefaults$MultiplexEnumeration.class
>>
>> See the attached svn-status.gz file for a complete diff (replace ! with D, ?
>> with A).
>>
>>  - I'd like to ask Tom (or somebody else) to look at the patches
>>    for the rhug/java repository.
>>
>>  - Ask to rebuild the .class and .h files using this new ecj.jar on the
>>  trunk,
>>    after the ecj.jar is uploaded.
>>
>> There are issues building OpenJDK and IcedTea with this new compiler.  Please
>> see the IcedTea ML for a follow-up posting.
>>
>>   Matthias
>>
> 
> Is this ecj buildable with gcj?  My experience of 3.8 is that it isn't buildable
> without the javax.lang.model code that is now in GNU Classpath, but hasn't yet been
> merged to gcj (it's not yet ready for that).

I used

  gcj-4.8 -C -g -I/usr/share/ant/lib/ant.jar @files

and that seems to work well enough to build libjava.