Actually the long-standing recommended practice is to explicitly set
source, target, and encoding when compiling:
https://blogs.oracle.com/darcy/entry/build_advice_set_source_target
This means you get the language semantics you're asking for :-) This is
appropriate when building the JDK too.
-Joe
On 4/20/2012 11:52 AM, Mike Duigou wrote:
The filed that needed modifying turned out to be
jdk/makefiles/common/shared/Defs-java.gmk
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.
Mike
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.hol...@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
