location of -source / -target in new build infrastructure

Mike Duigou mike.duigou at oracle.com
Fri Apr 20 18:52:11 UTC 2012

The filed that needed modifying turned out to be


It explicitly sets source and target versions. As you suggest this shouldn't be necessary. I can see why specifying source/target is necessary for code compiled with the bootstrap javac but in other cases we should be avoiding explicit specification and let the compiler use it's default. I was also kind of dubious about the specification of -encoding ascii I was pretty sure we had joined the 21st century and all the java source files are using utf-8.


On Apr 20 2012, at 10:48 , Fredrik Öhrström wrote:

> Yes, a leftover exist in Setup.gmk thanks for spotting that David!
> the -source 7 -target 7 should be replaced with $(BOOT_JDK_SOURCETARGET)
> which is setup by configure and stored in the spec.gmk file.
> That flag is only be used for compiling code that has to be
> run by the boot jdk. The particular setup that uses -source 7 -target 7
> in Setup.gmk is called GENERATE_OLDBYTECODE, which seems correct.
> However for all new bytecode, the remaining setups seems to lack both
> -source and -target, which is the intent, since I assumed that it would automatically
> build for jdk8 then?
> //Fredrik
> ----- david.holmes at oracle.com skrev:
>> Hi Mike,
>> Check out: jdk/makefiles/Setup.gmk
>> David
>> On 20/04/2012 10:13 AM, Mike Duigou wrote:
>>> Hello All;
>>> I am working on merging the new build infra into the lambda
>> workspace and have run into a minor problem. The javac compile for the
>> jdk sources is run with -source 7 -target 7 rather than -source 8
>> -target 8. In the classic build system for the lambda repo everything
>> except langtools is compiled with source/target 8. I looked and
>> couldn't find where the new build sets the source version. Any helpful
>> pointers?
>>> Thanks,
>>> Mike

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