add JDK 10 community build

[SethTisue]

there is sufficient capacity on the behemoths.

if we run low on capacity, we could eventually drop the JDK 9 community build and just do 10 (and/or 11)

[SethTisue]

I made the job at https://scala-ci.typesafe.com/view/scala-2.12.x/job/scala-2.12.x-jdk10-integrate-community-build/ and queued a first run

presumably it will fail because JDK 10 isn't installed yet. (if it doesn't fail, I should look into that.)

[SethTisue]

so far so good:

+ echo 'Failed to locate openjdk Java 10 in /usr/lib/jvm/, containing:'
Failed to locate openjdk Java 10 in /usr/lib/jvm/, containing:
+ find /usr/lib/jvm/ -name java
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
/usr/lib/jvm/java-8-openjdk-amd64/bin/java
/usr/lib/jvm/java-9-openjdk-amd64/bin/java
+ exit 1
Build step 'Execute shell' marked build as failure

[SethTisue]

steps I followed for installing OpenJDK 10:

• use instructions at https://stackoverflow.com/a/49507161/86485 as a guide
• go to http://jdk.java.net/10/
• copy URL of Linux tarball
• curl -O 'https://download.java.net/java/GA/jdk10/10.0.1/fb4372174a714e6b8c52526dc134031e/10//openjdk-10.0.1_linux-x64_bin.tar.gz'
• sudo mv openjdk-10.0.1_linux-x64_bin.tar.gz /usr/lib/jvm
• cd /usr/lib/jvm
• sudo tar xzf openjdk-10.0.1_linux-x64_bin.tar.gz
• sudo rm openjdk-10.0.1_linux-x64_bin.tar.gz
• sudo mv jdk-10.0.1 java-10-openjdk-amd64 <-- should have been x64 not amd64
• sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-10-openjdk-amd64/bin/java 1
• sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-10-openjdk-amd64/bin/javac 1

[SethTisue]

new run: https://scala-ci.typesafe.com/view/scala-2.12.x/job/scala-2.12.x-jdk10-integrate-community-build/2/

I see export JAVA_HOME=/usr/lib/jvm/java-10-openjdk-amd64 so it's off to a good start, I'll come back tomorrow to check on it

[SethTisue]

hmm I see I lied about x64 vs amd64 above, assuming this is working I'll go back and straighten that out.

[SethTisue]

working now on getting everything to at least extract:

• allow building on JDK 10/11; add JDK 10 to build matrix scala-parser-combinators#160
• allow JDK 10 & 11 scala-async#200
• allow building on JDK 10 and 11 scala-continuations#40
• allow JDK 10 & 11, drop Scala 2.13, bump 2.12.4 -> 2.12.6 scala-partest#112
• cats: b8a7fb3, d070bae

[SethTisue]

yay, everything extracts 🎉

first real run in progress: https://scala-ci.typesafe.com/view/scala-2.12.x/job/scala-2.12.x-jdk10-integrate-community-build/14/

[SethTisue]

scala-js-stubs is failing (which takes out much of the build) because the behemoth doesn't have rt.jar in the right place. so that's the next fix

[SethTisue]

note that I've moved the JDK 10 job to behemoth 1. behemoth 2 was getting overloaded

[SethTisue]

installed JDK 10 on behemoth 1 using the above instructions (but with the amd64/x64 mistake fixed)

[SethTisue]

on behemoth 2, fixed the directory naming with

sudo update-alternatives --remove java /usr/lib/jvm/java-10-openjdk-amd64/bin/java
sudo update-alternatives --remove javac /usr/lib/jvm/java-10-openjdk-amd64/bin/javac
cd /usr/lib/jvm
sudo mv java-10-openjdk-amd64 java-10-openjdk-x64
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-10-openjdk-x64/bin/java 1
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-10-openjdk-x64/bin/javac 1