Fail to build on Ubuntu

[aquynh]

I am trying to build the latest code from github on Ubuntu 20.04, and get the following error.

$ bazelisk build :all
....
INFO: Analyzed 424 targets (0 packages loaded, 0 targets configured).
INFO: Found 424 targets...
ERROR: /home/me/.cache/bazel/_bazel_me/e101812331eb46b601b8487dfb6ffce9/external/bazel_tools/tools/jdk/BUILD:314:1: Action external/bazel_tools/tools/jdk/platformclasspath.jar failed (Exit 1)
Exception in thread "main" java.lang.IllegalArgumentException: external/local_jdk
	at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.update(Locations.java:1853)
	at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.handleOption(Locations.java:1798)
	at jdk.compiler/com.sun.tools.javac.file.Locations.handleOption(Locations.java:2062)
	at jdk.compiler/com.sun.tools.javac.file.BaseFileManager.handleOption(BaseFileManager.java:269)
	at jdk.compiler/com.sun.tools.javac.file.BaseFileManager$2.handleFileManagerOption(BaseFileManager.java:222)
	at jdk.compiler/com.sun.tools.javac.main.Option.process(Option.java:1138)
	at jdk.compiler/com.sun.tools.javac.main.Option.handleOption(Option.java:1086)
	at jdk.compiler/com.sun.tools.javac.file.BaseFileManager.handleOption(BaseFileManager.java:232)
	at jdk.compiler/com.sun.tools.javac.main.Arguments.doProcessArgs(Arguments.java:390)
	at jdk.compiler/com.sun.tools.javac.main.Arguments.processArgs(Arguments.java:347)
	at jdk.compiler/com.sun.tools.javac.main.Arguments.init(Arguments.java:246)
	at jdk.compiler/com.sun.tools.javac.api.JavacTool.getTask(JavacTool.java:185)
	at DumpPlatformClassPath.dumpJDK9AndNewerBootClassPath(DumpPlatformClassPath.java:106)
	at DumpPlatformClassPath.main(DumpPlatformClassPath.java:67)
INFO: Elapsed time: 1.274s, Critical Path: 0.71s
INFO: 0 processes.
FAILED: Build did NOT complete successfully

Here is my java version:

$ java --version
openjdk 14.0.2 2020-07-14
OpenJDK Runtime Environment (build 14.0.2+12-Ubuntu-120.04)
OpenJDK 64-Bit Server VM (build 14.0.2+12-Ubuntu-120.04, mixed mode, sharing)

Any ideas on how to fix this issue?

[brad4d]

The development environment on which the Google support team works on closure-compiler is using JDK 11.

$ java --version
openjdk 11.0.10 2021-02-27
OpenJDK Runtime Environment (build 11.0.10+9-google-release-359977778)
OpenJDK 64-Bit Server VM (build 11.0.10+9-google-release-359977778, mixed mode, sharing)

Hmmm.... it looks like it's actually bazelisk or bazel that failed.
Maybe bazel has a problem with Java 14?
It might be better to file a bug with the bazel project.

https://github.com/bazelbuild/bazel/issues

[aquynh]

i tried to build with yarn, but also get error like below.

$ yarn build
yarn run v1.22.10
$ clean && mvn -DskipTests
/bin/sh: 1: clean: not found
error Command failed with exit code 127.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[neekfenwick]

perhaps you do not have javac on your $PATH? i.e. you need to install a JDK that has the java compiler binary javac.

I got a very similar looking error message, with openjdk 11 installed on my Fedora 34 system:

INFO: Analyzed target //:compiler_unshaded_deploy.jar (0 packages loaded, 0 targets configured).
INFO: Found 1 target...
ERROR: /home/neek/.cache/bazel/_bazel_neek/ca9166dfb359be451c95c9d1c6288e98/external/bazel_tools/tools/jdk/BUILD:314:1: Action external/bazel_tools/tools/jdk/platformclasspath.jar failed (Exit 1): java failed: error executing command 
  (cd /home/neek/.cache/bazel/_bazel_neek/ca9166dfb359be451c95c9d1c6288e98/execroot/com_google_javascript_jscomp && \
  exec env - \
  external/remotejdk11_linux/bin/java -XX:+IgnoreUnrecognizedVMOptions '--add-exports=jdk.compiler/com.sun.tools.javac.platform=ALL-UNNAMED' -cp bazel-out/k8-fastbuild/bin/external/bazel_tools/tools/jdk/platformclasspath_classes:external/remotejdk11_linux/lib/tools.jar DumpPlatformClassPath bazel-out/k8-fastbuild/bin/external/bazel_tools/tools/jdk/platformclasspath.jar external/local_jdk)
Execution platform: @local_config_platform//:host
Exception in thread "main" java.lang.IllegalArgumentException: external/local_jdk
        at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.update(Locations.java:1853)
        at jdk.compiler/com.sun.tools.javac.file.Locations$SystemModulesLocationHandler.handleOption(Locations.java:1798)

I thought perhaps it was my java version number at fault, from this output I thought I had a full JDK installed:

$ java -version
openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment 18.9 (build 11.0.11+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.11+9, mixed mode, sharing)

Just to try something, I downloaded JDK 16 following these insturctions https://www.techtransit.org/install-and-upgrade-java-version-on-centos-redhat-and-fedora-linux/ (untar the JDK and use alternatives to point /usr/bin links to them, and I found that javac had not been set to anything previously, and sure enough my Fedora package java-11-openjdk-headless doesn't have a javac binary in it.

After installing a "proper" JDK and setting up javac on my $PATH, the bazel build completes OK.

Bazel appears to have poor error reporting going back a few years, see google/j2cl#34