> On Thu, 6 Sep 2012 01:48:29 AM Lone_Wolf wrote:
>> i'm looking into building latest trunk revision (10124 now) from source on
>> archlinux.
>> When compiling , i get this warning :
>> [javac] warning: [options] bootstrap class path not set in conjunction
with -source 1.5
>> A search indicated this was due to building for an older version then the
>> java version i am running.
>
> Correct. I get that too. A search will also tell you what to do about
it
> if
> you are worried about it. FWIW I do not bother. We could consider
moving
> to
> 1.6, but IMHO that should wait for a major release.
>
>> On my system jdk7 is installed, so i tried to build against java 1.7 .
>
> Ditto. java-1.7.0-openjdk-1.7.0.6-2.3.1.fc17.2.x86_64 to be exact.
>
>> ant -Djava.target.version=1.7 gives this output :
>> Buildfile:
>> /home/panoramix/Documents/WIP/pkgbuilds/freecol-svn/src/freecol-build/build.
xml
>> init:
>> compile:
>> [javac] Compiling 629 source files to
>> /home/panoramix/Documents/WIP/pkgbuilds/freecol-svn/src/freecol-build/build
>> [javac]
>> /home/panoramix/Documents/WIP/pkgbuilds/freecol-svn/src/freecol-build/src/ne
t/sf/freecol/common/model/BuildQueue.java:72: warning: [unchecked]
Possible
>> heap pollution from parameterized vararg type T
>> [javac] public BuildQueue(Colony colony, CompletionAction
>> action,
>> int priority, T... items) {
>> [javac] ^
>> [javac] where T is a type-variable:
>> [javac] T extends BuildableType declared in class BuildQueue
[javac] 1 warning
>
> Here we differ. I have not seen that warning, and I am surprised the
compiler
> dislikes the BuildQueue constructor, it looks reasonable to me. However if
> parameterized varargs are risky there is a simple solution here---
AFAICT
> we
> never use the items argument at any call site, so it can simply be removed.
>
> So, can I interest you in submitting a patch?
>
> Cheers,
> Mike Pope
>
I've searched about this warning and found it's a new one introduced in
java 7.
http://docs.oracle.com/javase/7/docs/technotes/guides/language/non-reifiable-varargs.html
http://www.angelikalanger.com/GenericsFAQ/FAQSections/ProgrammingIdioms.html#FAQ300A
The version i use is 7.u7_2.3.2 , and archlinux uses minimal patching. I
suggest you look into the FC package and check if it may be patched to not
show this warning.
Just removing the <T... items> part gives plenty of build errors, and
removing <items> gives an identifier expected warning .
I know little about java coding (have some experience with javascript, C++
and python) but will look into this further.
LW
Note : I have had trouble with replying without making a new post, hope i
have done it right now.
apologies for any inconvenience.
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