[External] : Re: Trying to build j-extract on Linux throws "java.lang.module.FindException: Module jdk.compiler not found"
Gavin Ray
ray.gavin97 at gmail.com
Thu Sep 22 17:28:40 UTC 2022
I used Gradle 8.0 nightly to get around the classfile issue, though the
error unfortunately wasn't from the gradle build
but instead directly from running jlink in JDK20 =(
I run "jdk20/jdk/bin/jlink" with the same commands as the gradle build does
manually and I get this
Should I file an issue somewhere about jlink?
[user at MSI ]$ jdk-20-panama/jdk/bin/jlink \
--module-path=~/projects/jextract-panama-upstream/build/jmods \
--add-modules=org.openjdk.jextract,jdk.compiler,jdk.zipfs \
--output=~/projects/jextract-panama-upstream/build/jextract \
--launcher=jextract=org.openjdk.jextract/org.openjdk.jextract.JextractTool \
--add-options '"--enable-native-access=org.openjdk.jextract"
"--enable-preview"'
java.lang.module.FindException: Module jdk.compiler not found
at java.base/java.lang.module.Resolver.findFail(Resolver.java:892)
at...
[user at MSI ]$ jdk-20-panama/jdk/bin/java --list-modules | grep jdk.compiler
jdk.compiler
file:///home/user/downloads/jdk-20-panama-sourcebuilt/jdk/modules/jdk.compiler/
On Wed, Sep 21, 2022 at 10:45 PM Sundararajan Athijegannathan <
sundararajan.athijegannathan at oracle.com> wrote:
> Gradle 7.5.1 supports only up to jdk 18.
>
>
> 1. You may need to set JAVA_HOME to point to the latest version of
> java supported by Gradle version that you use.
>
> 2. Pass -Pjdk19_home to be jdk 19 installation from
> https://jdk.java.net/19/ to build it.
>
>
> -
>
> If you want to build jextract that works with the latest panama API from
> panama repo, then
>
> 1. Set JAVA_HOME to point to your Gradle compatible java
> 2. build jdk from panama-foreign repo's
>
> foreign-memaccess+abi branch.
>
> 3. In jextract repo, check out "panama" branch.
>
> 4. Pass -Pjdk20_home to gradle build (pointing to panama build)
>
>
>
> Hope this helps,
>
> -Sundar
>
>
> ------------------------------
> *From:* Gavin Ray <ray.gavin97 at gmail.com>
> *Sent:* 21 September 2022 22:08
> *To:* Sundararajan Athijegannathan <
> sundararajan.athijegannathan at oracle.com>
> *Cc:* panama-dev at openjdk.org <panama-dev at openjdk.org>
> *Subject:* [External] : Re: Trying to build j-extract on Linux throws
> "java.lang.module.FindException: Module jdk.compiler not found"
>
> Well the above worked for JDK 19, though now I am trying to build from the
> "panama" branch which includes API changes from JDK 20
>
> I built Panama OpenJDK from source, and got the same issue. It's very
> strange:
>
> [user at MSI ]$ /home/user/downloads/jdk-20-panama-sourcebuilt/jdk/bin/jlink
> \
> --module-path=/home/user/projects/jextract-panama-upstream/build/jmods \
> --add-modules=org.openjdk.jextract,jdk.compiler,jdk.zipfs \
> --output=/home/user/projects/jextract-panama-upstream/build/jextract \
>
> --launcher=jextract=org.openjdk.jextract/org.openjdk.jextract.JextractTool \
> --add-options '"--enable-native-access=org.openjdk.jextract"
> "--enable-preview"'
> Error: Module jdk.compiler not found
>
> java.lang.module.FindException: Module jdk.compiler not found
> at java.base/java.lang.module.Resolver.findFail(Resolver.java:892)
> at...
>
> [user at MSI ]$ /home/user/downloads/jdk-20-panama-sourcebuilt/jdk/bin/java
> --list-modules | grep jdk.compiler
> jdk.compiler
> file:///home/user/downloads/jdk-20-panama-sourcebuilt/jdk/modules/jdk.compiler/
>
> On Tue, Sep 20, 2022 at 11:53 PM Gavin Ray <ray.gavin97 at gmail.com> wrote:
>
> Thanks for the swift reply Sundararajan,
>
> Running this seems to produce one output, it looks like something is there:
>
> [user at MSI] $
> /usr/lib/jvm/java-19-openjdk-19.0.0.0.36-2.rolling.fc38.x86_64/bin/java
> --list-modules | grep jdk.compiler
> jdk.compiler at 19
>
> Where the output line is "jdk.compiler at 19"
>
> [image: image.png]
>
> It's not so much a big deal, I installed JDK 17 and used that as the
> Gradle compiler and it worked
> Probably it is something I am doing wrong and not worth investing time into
>
> I have written a Dockerfile that builds jextract from source and allows
> you to use it without installing anything
> It is late here so I haven't had time to test it yet, but I will
> double-check it tomorrow and submit it as a PR to repo so folks can use
> this if they want:
>
> https://gist.github.com/GavinRay97/45365bf3b7d49ae335c525ffd51605c4
> <https://urldefense.com/v3/__https://gist.github.com/GavinRay97/45365bf3b7d49ae335c525ffd51605c4__;!!ACWV5N9M2RV99hQ!NB6BSgz6WT2DrbrHX1HyXvOyFBIy6Nexl3Y93Kv2K03HKb1mF22uDXLR7g_AmKCvU-1vS1UAuuD6SfflaMamAXQ7IQIAfpjSiw$>
>
> Then anyone can run jextract like:
> docker run --rm -it jextract:v0.x <flags>
>
> =)
>
>
> On Tue, Sep 20, 2022 at 11:36 PM Sundararajan Athijegannathan <
> sundararajan.athijegannathan at oracle.com> wrote:
>
> Hi,
>
> I just checked with Oracle jdk19 installation + jextract repo's master
> branch. Build/verify worked as expected on mac.
>
> From the error message you posted, it seems "jdk.compiler" module is
> missing in your jdk19 installation. jextract needs jdk.compiler module to
> compile the extracted Java sources to produce .class files.
>
> Will you please check if the following command prints "jdk.compiler"?
>
> /usr/lib/jvm/java-19-openjdk-19.0.0.0.36-2.rolling.fc38.x86_64/bin/java
> --list-modules | grep jdk.compiler
>
> For example, in my case
>
> $ /Library/Java/JavaVirtualMachines/jdk-19.jdk/Contents/Home/bin/java \
>
> > --list-modules | grep jdk.compiler
>
> jdk.compiler at 19
>
>
> If not, that installation may be missing compiler module (perhaps
> generated by jlink invocation). Solution is to install a full JDK 19.
>
>
> Hope this helps,
>
> -Sundar
>
>
>
>
> ------------------------------
> *From:* panama-dev <panama-dev-retn at openjdk.org> on behalf of Gavin Ray <
> ray.gavin97 at gmail.com>
> *Sent:* 21 September 2022 07:35
> *To:* panama-dev at openjdk.org <panama-dev at openjdk.org>
> *Subject:* Trying to build j-extract on Linux throws
> "java.lang.module.FindException: Module jdk.compiler not found"
>
> Hello all,
>
> I'm trying to generate jextract types for io_uring (I didn't find any
> non-JNI/JNA libraries to use it from JVM)
> Unfortunately, following the instructions I've hit a snag.
>
> Building it with JDK 19, I get:
> =============================================
> [user at MSI jextract]$ sh ./gradlew \
> -Pjdk19_home=/usr/lib/jvm/java-19-openjdk-19.0.0.0.36-2.rolling.fc38.x86_64
> \
> -Pllvm_home=/home/user/downloads/clang+llvm-15.0.0-aarch64-linux-gnu clean
> verify
>
> > Task :compileJava
> Note: Some input files use preview features of Java SE 19.
> Note: Recompile with -Xlint:preview for details.
>
> > Task :createJextractImage FAILED
> Error: Module jdk.compiler not found
> java.lang.module.FindException: Module jdk.compiler not found
> at java.base/java.lang.module.Resolver.findFail(Resolver.java:892)
> at java.base/java.lang.module.Resolver.resolve(Resolver.java:129)
> at
> java.base/java.lang.module.Configuration.resolve(Configuration.java:420)
> at
> java.base/java.lang.module.Configuration.resolve(Configuration.java:254)
> at
> jdk.jlink/jdk.tools.jlink.internal.Jlink$JlinkConfiguration.resolve(Jlink.java:217)
> at
> jdk.jlink/jdk.tools.jlink.internal.JlinkTask.createImageProvider(JlinkTask.java:536)
> at
> jdk.jlink/jdk.tools.jlink.internal.JlinkTask.createImage(JlinkTask.java:424)
> at
> jdk.jlink/jdk.tools.jlink.internal.JlinkTask.run(JlinkTask.java:276)
> at jdk.jlink/jdk.tools.jlink.internal.Main.run(Main.java:56)
> at jdk.jlink/jdk.tools.jlink.internal.Main.main(Main.java:34)
> =============================================
>
> Would it make sense to add a Dockerfile for Linux to the repo that can
> reliably build the latest version?
> That way folks don't have to mess around with finding and installing LLVM
> and whatnot.
>
> I'm happy to submit a PR for this if someone can tell me why the regular
> build command is failing, ha.
>
>
>
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