JAVA_HOME is not exported for arm64 architecture

Environments Multi CPU Architecture
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1

I see a strange behavior that I believe is a bug.

If I use the following config:

language: java
jdk: oraclejdk11

install:
    - echo $JAVA_HOME 
    - false

then the outcome is:

$ java -Xmx32m -version
openjdk version "11.0.2" 2019-01-15
OpenJDK Runtime Environment 18.9 (build 11.0.2+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)
$ javac -J-Xmx32m -version
javac 11.0.2
install.1
0.00s$ echo $JAVA_HOME
/usr/local/lib/jvm/openjdk11
0.00s$ false

But if I add arch: arm64 to the config:

language: java
jdk: oraclejdk11
arch: arm64

install:
    - echo $JAVA_HOME 
    - false

then JAVA_HOME is empty:

$ java -Xmx32m -version
openjdk version "11.0.5" 2019-10-15
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.5+10)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.5+10, mixed mode)
$ javac -J-Xmx32m -version
javac 11.0.5
install.1
0.02s$ echo $JAVA_HOME
0.01s$ false
2

Thanks for the report. I took a quick look.

We are installing adoptopenjdk-*-hotspot package https://github.com/travis-ci/travis-build/blob/0d3f1f908897605ec66c0d04b2e150741c4381dc/lib/travis/build/bash/travis_install_jdk.bash#L45-L57 I believe the expectation was that these packages would set necessary environment variables, but probably that was wrong. We will look into it.

3

Curiously,


does not mention $JAVA_HOME for Linux installation.

We can guess the value based on files at hand, and it would go something like this:

f=$(which javac)
while [[ -L $f ]]; do f=$(readlink $f); done
export JAVA_HOME=${f%/bin/*}

The result is something like this: https://travis-ci.org/BanzaiMan/travis_production_test/builds/641393626#L890

Could you add the snippet above in your build and see if that meets your needs?

Thanks.

4

Thank you for the workaround! It helps!

5

Did that work for you?

6

Yes!
But I think it would be better if it is consistent in both environments.

7

Not clear to me that would be possible, given that we use different mechanisms to install the Java packages.

8

Is that solicitation for a patch? :slight_smile:

10

Anyway,