Why is build using Java 11?

[Blake McBride]

Or, even better:

export JAVA_HOME="$(dirname $(dirname $(realpath $(which javac))))"

On Sun, Apr 10, 2022 at 6:04 PM Blake McBride <blake at mcbride.name> wrote:

> I do not know why ant 1.10.11 insists on using Java 11 when my system is
> clearly configured for Java 8.  However, if I do:
>
> export JAVA_HOME=/usr/lib/jvm/java-1.8.0
>
> ant will pick up the correct version of Java and all is good.
>
> Thanks.
>
> Blake
>
>
> On Tue, Mar 8, 2022 at 9:58 AM Mark Evenson <evenson at panix.com> wrote:
>
>>
>>
>> > On Mar 7, 2022, at 23:41, Blake McBride <blake at mcbride.name> wrote:
>> >
>> > Greetings,
>> >
>> > I am building the latest SVN version of ABCL on a Linux box.  Here is
>> what I am seeing:
>> >
>> >
>> > $ java -version
>> > openjdk version "1.8.0_322"
>> > OpenJDK Runtime Environment (build 1.8.0_322-b06)
>> > OpenJDK 64-Bit Server VM (build 25.322-b06, mixed mode)
>> > $ javac -version
>> > javac 1.8.0_322
>> > $ env |grep JAVA
>> > $ ant
>> > [...]
>> > abcl.init:
>> >      [echo] java.version: 11.0.14.1
>> > [...]
>> > $
>> >
>> > Why is the build using Java 11?
>> >
>> > Thanks!
>>
>> Unfortunately, I cannot provide any useful help from the information you
>> have provided. I suspect something within Ant is overriding the shell
>> environment, but don’t know how to meaningfully proceed “remotely”.
>>
>> Nothing has changed recently in the structure of our Ant based build, so
>> if this worked for you before on the same user/machine I would expect it to
>> continue to work.
>>
>> Some ideas:
>>
>> I would look into how/where the `javac` command executes.  It might be
>> symlink via the Linux “alternatives” system that somehow has a different
>> execution path.
>>
>> I would look into how the `ant` execution is specified from the shell.  I
>> sometimes use the `jenv` utility which uses a shim for Ant execution that
>> can get confused.
>>
>> I might create a new user to see if the problem is present in a “clean”
>> environment as well.
>>
>> I might create a toy Ant build.xml file that uses the <javac> target to
>> see which javac is being picked up.
>>
>> Sincerely,
>> Mark Evenson
>>
>> --
>> "A screaming comes across the sky.  It has happened before but there is
>> nothing
>> to compare to it now."
>>
>>
>>
>>
>>
>>
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