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Installer scripts for Eclipse Temurin binaries
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RPM installations only adds "java" command to alternatives #161

Closed ggam closed 5 years ago

ggam commented 5 years ago

I install AdoptOpenJDK from the RPM repository as described on https://adoptopenjdk.net/installation.html#linux-pkg

It seems to only add java and javac to alternatives, but there are a lot of binaries on the bin folder:

jaotc  jarsigner  javac    javap  jconsole  jdeprscan  jhsdb   jinfo  jlink  jmod  jrunscript  jstack  jstatd   pack200  rmid         serialver
jar    java       javadoc  jcmd   jdb       jdeps      jimage  jjs    jmap   jps   jshell      jstat   keytool  rmic     rmiregistry  unpack200

This leads to surprising "conflicts" with the Java version bundled with the operation system, as I have an AdoptOpenJDK 12 java and an upstream OpenJDK 8 javadoc :). . Is it possible to add them to alternatives?

ggam commented 5 years ago

Interestingly, it seems that the alternatives should have been added: https://github.com/AdoptOpenJDK/openjdk-installer/blob/master/linux/rpm/config/jdk-12-hotspot/postinst.sh

I'll try to investigate a bit more.

aahlenst commented 5 years ago

On CentOS 7 (docker run -d -t centos:centos7):

# yum list installed | grep adopt
adoptopenjdk-12-hotspot.x86_64          12.0.2+10-1                @AdoptOpenJDK
# which javac
/usr/bin/javac
# ls -l /usr/bin/javac
lrwxrwxrwx 1 root root 23 Sep 14 10:36 /usr/bin/javac -> /etc/alternatives/javac
# ls -l /etc/alternatives/javac
lrwxrwxrwx 1 root root 46 Sep 14 10:36 /etc/alternatives/javac -> /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/javac
# javac -version
javac 12.0.2
# which jaotc
/usr/bin/jaotc
# ls -l /usr/bin/jaotc
lrwxrwxrwx 1 root root 23 Sep 14 10:36 /usr/bin/jaotc -> /etc/alternatives/jaotc
# ls -l /etc/alternatives/jaotc
lrwxrwxrwx 1 root root 46 Sep 14 10:36 /etc/alternatives/jaotc -> /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/jaotc
# jaotc --version
jaotc 12.0.2+10

People usually get in trouble if they install multiple versions of Java. Not all vendors stick to the same convention when defining the priority of the alternatives (what update-alternatives should consider as a "better", i.e. newer, version). This can lead to mismatches (e.g. java points to Azul Zulu and javac to AdoptOpenJDK). There's nothing we can do about that. It's the user's responsibility to select the desired versions with update-alternatives and to do it for both java and javac. To list the available alternatives:

# update-alternatives --list
libnssckbi.so.x86_64    auto    /usr/lib64/pkcs11/p11-kit-trust.so
ld  auto    /usr/bin/ld.bfd
java    auto    /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/java
javac   auto    /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/javac

To use e.g. AdoptOpenJDK 12 with HotSpot:

# update-alternatives --set javac /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/javac
# update-alternatives --set java /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/java

If your problems persist, please tell us the OS you're using, what Java versions you have installed and which steps you took to get there.

ggam commented 5 years ago

Thanks for the response. Perhaps I'm doing something wrong.

My OS is Fedora 30. I have the following JDKs installed:

[guillermo@localhost linux]$ alternatives --display java | grep priority
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/jre/bin/java - family java-1.8.0-openjdk.x86_64 priority 1800222
/usr/lib/jvm/java-12-openjdk-12.0.2.9-1.rolling.fc30.x86_64/bin/java - family java-latest-openjdk.x86_64 priority 1
/usr/lib/jvm/java-11-openjdk-11.0.4.11-0.fc30.x86_64/bin/java - family java-11-openjdk.x86_64 priority 1
/usr/lib/jvm/adoptopenjdk-12-openj9/bin/java - priority 1121
/home/guillermo/sapmachine-jdk-12.0.2/ - priority 10
/usr/lib/jvm/adoptopenjdk-12-hotspot/bin/java - priority 1121
/usr/lib/jvm/adoptopenjdk-11-hotspot/bin/java - priority 1111

And this is the list of alternatives:

[guillermo@localhost linux]$ update-alternatives --list | grep j
javadocdir              auto    /usr/share/javadoc/java-12-openjdk-12.0.2.9-1.rolling.fc30.x86_64/api
java                    manual  /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/java
jre_11_openjdk          auto    /usr/lib/jvm/jre-11-openjdk-11.0.4.11-0.fc30.x86_64
jre_1.8.0               auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/jre
whois                   auto    /usr/bin/jwhois
jre_11                  auto    /usr/lib/jvm/java-11-openjdk-11.0.4.11-0.fc30.x86_64
javac                   auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/bin/javac
jre_12                  auto    /usr/lib/jvm/java-12-openjdk-12.0.2.9-1.rolling.fc30.x86_64
jre_1.8.0_openjdk       auto    /usr/lib/jvm/jre-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64
java_sdk_1.8.0_openjdk  auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64
java_sdk_1.8.0          auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64
jre_openjdk             auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/jre
java_sdk_openjdk        auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64
jre_12_openjdk          auto    /usr/lib/jvm/jre-12-openjdk-12.0.2.9-1.rolling.fc30.x86_64

javadoc for example is not listed as an alternative, and the one from the system is used:

[guillermo@localhost linux]$ alternatives --display javadoc
[guillermo@localhost linux]$ ls -l /etc/alternatives/javadoc
lrwxrwxrwx. 1 root root 71 sep  7 12:40 /etc/alternatives/javadoc -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/bin/javadoc

Other commands not contained on JDK 8 just don't work as they are not provided by any installation:

lrwxrwxrwx. 1 root root 71 sep  7 12:40 /etc/alternatives/javadoc -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/bin/javadoc
[guillermo@localhost linux]$ jlink
bash: jlink: no se encontró la orden...
Una orden similar es: 'link'

What I expected (and from the code it seems it was the idea) was all tools be registered as alternatives.

aahlenst commented 5 years ago

The problem seems to be this line here from the list of alternatives:

javac                   auto    /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64/bin/javac

By using the javac alternative from java-1.8.0-openjdk-1.8.0.222.b10-0.fc30.x86_64 you're effectively telling Fedora to use the developer tools from that package. As a result, you don't get those from adoptopenjdk-12-hotspot. You have to run update-alternatives --set javac /usr/lib/jvm/adoptopenjdk-12-hotspot/bin/javac, too, to get those.

ggam commented 5 years ago

Thanks, that worked perfectly. I basically use alternatives only to change between java implementations and have little more knowledge about how it works. I thought javac referred only to the javac command and not to the whole set of development tools.

From what you say, this is standard behavior, but I think some lines might be added to the insallation instructions on the website, clarifying the alternatives that are installed and how to change them.

Thanks again!

ggam commented 5 years ago

Created https://github.com/AdoptOpenJDK/openjdk-website/issues/566