ADDITIONAL SYSTEM INFORMATION : OS: Ubuntu 20.04 LTS (64 bit) JDK: OpenJDK Runtime Environment (build 1.8.0_252-8u252-b09-1ubuntu1-b09 OpenJDK 64-Bit server VM (build 25.252-b09, mixed mode) Attempted openJFX mercurial revision: 10300 A DESCRIPTION OF THE PROBLEM : There are no instructions for compiling openJFX 8 on any ubuntu platforms after 16. I attempted to build it via the instructions for 14-16, but was unsuccessful. Building for newer versions of Ubuntu is critical because there no longer exists (as far as I can find) and openjfx 8 packages for ubuntu, so the only way to install it would be to build it from source. (See https://bugs.launchpad.net/ubuntu/+source/openjfx/+bug/1799946 which had a workaround solution which worked until recently when version 8u161-b12-1ubuntu2 was removed). There are still many applications out there which do not support Java 9+, so this capability is a necessity. STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : On fresh Ubuntu 20.4 VM: apt -y update && apt -y install openjdk-8-jdk unzip export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/jre apt -y install ksh bison flex gperf libasound2-dev libgl1-mesa-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libjpeg-dev libpng-dev libx11-dev libxml2-dev libxslt1-dev libxt-dev libxxf86vm-dev pkg-config x11proto-core-dev x11proto-xf86vidmode-dev libavcodec-dev mercurial libgtk2.0-dev libgtk-3-dev libxtst-dev libudev-dev libavformat-dev apt -y install cmake ruby wget https://services.gradle.org/distributions/gradle-5.0-bin.zip -P /tmp unzip -d /opt/gradle /tmp/gradle-*.zip export GRADLE_HOME=/opt/gradle/gradle-5.0 export PATH=${GRADLE_HOME}/bin:${PATH} hg clone https://hg.openjdk.java.net/openjfx/8u-dev/rt cd rt gradle --scan EXPECTED VERSUS ACTUAL BEHAVIOR : EXPECTED - Compile open JFX ACTUAL - gradle --scan > Task :buildSrc:compileGroovy startup failed: /home/nathan/Documents/repos/rt/buildSrc/src/main/groovy/com/sun/javafx/gradle/NativeCompileTask.groovy: 118: The variable [files] is declared final but is reassigned . At [118:21] @ line 118, column 21. files += file; ^ 1 error > Task :buildSrc:compileGroovy FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':buildSrc:compileGroovy'. > Compilation failed; see the compiler error output for details. * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. * Get more help at https://help.gradle.org BUILD FAILED in 4s FREQUENCY : always
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