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README.md

os-maven-plugin is a Maven extension/plugin that generates various useful platform-dependent project properties normalized from ${os.name} and ${os.arch}.

${os.name} and ${os.arch} are often subtly different between JVM and operating system versions or they sometimes contain machine-unfriendly characters such as whitespaces. This plugin tries to remove such fragmentation so that you can determine the current operating system and architecture reliably.

Generated properties

os-maven-plugin detects the information about the current operating system and normalize it into more portable one.

Property: os.detected.name

os.detected.name is set to one of the following values, based on the lower-cased value of the os.name Java system property, whose non-alphanumeric characters are stripped out. e.g. OS_400 -> os400

  • aix - if the value starts with aix
  • hpux - if the value starts with hpux
  • os400 - if the value starts with os400 and its following character is not a digit (e.g. os4000)
  • linux - if the value starts with linux
  • osx - if the value starts with macosx or osx
  • freebsd - if the value starts with freebsd
  • openbsd - if the value starts with openbsd
  • netbsd - if the value starts with netbsd
  • sunos - if the value starts with solaris or sunos
  • windows - if the value starts with windows
  • zos - if the value starts with zos

Property: os.detected.arch

os.detected.arch is set to one of the following values, based on the lower-cased value of the os.arch Java system property, whose non-alphanumeric characters are stripped out. e.g. x86_64 -> x8664

  • x86_32 - if the value is one of: x8632, x86, i386, i486, i586, i686, ia32, x32
  • x86_64 - if the value is one of: x8664, amd64, ia32e, em64t, x64
  • itanium_32 - if the value is ia64n
  • itanium_64 - if the value is one of: ia64, ia64w, itanium64
  • sparc_32 - if the value is one of: sparc, sparc32
  • sparc_64 - if the value is one of: sparcv9, sparc64
  • arm_32 - if the value is one of: arm, arm32
  • aarch_64 - if the value is aarch64
  • mips_32 - if the value is one of: mips, mips32
  • mips_64 - if the value is mips64
  • mipsel_32 - if the value is one of: mipsel, mips32el
  • mipsel_64 - if the value is mips64el
  • ppc_32 - if the value is one of: ppc, ppc32
  • ppc_64 - if the value is ppc64
  • ppcle_32 - if the value is one of: ppcle, ppc32le
  • ppcle_64 - if the value is ppc64le
  • s390_32 - if the value is s390
  • s390_64 if the value is s390x
  • riscv if the value is riscv

Note: The bitness part of this property relies on the bitness of the JVM binary, e.g. You'll get the property that ends with _32 if you run a 32-bit JVM on a 64-bit OS.

Property: os.detected.bitness

The bitness from whether sun.arch.data.model, com.ibm.vm.bitmode or os.arch, e.g. 64, 32. May report 31 for zOS legacy systems.

Note: This property signifies the bitness of the JVM binary, e.g. You'll get 32 if you run a 32-bit JVM on a 64-bit OS.

Property: os.detected.version.*

os.detected.version and its sub-properties are operation system dependent version number that may indicate the kernel or OS release version. They are generated from the os.version Java system property. os-maven-plugin find the version number using the following regular expression:

((\\d+)\\.(\\d+)).*
  • os.detected.version.major - the first matching digits
  • os.detected.version.minor - the second matching digits
  • os.detected.version - <os.detected.version.major>.<os.detected.version.minor> e.g. 3.1

Property: os.detected.classifier

You can also use the ${os.detected.classifier} property, which is a shortcut of ${os.detected.name}-${os.detected.arch}.

Property: os.detected.release.* (Linux-only)

See the section 'Customized deployments for specific releases of Linux' below.

Enabling os-maven-plugin on your Maven project

Add the extension to your pom.xml like the following:

<project>
  <build>
    <extensions>
      <extension>
        <groupId>kr.motd.maven</groupId>
        <artifactId>os-maven-plugin</artifactId>
        <version>1.7.0</version>
      </extension>
    </extensions>
  </build>
</project>

Using Gradle?

Use the plugin from Google.

Adding a platform-dependent dependency

Use ${os.detected.classifier} as the classifier of the dependency:

<project>
  <dependencies>
    <dependency>
      <groupId>com.example</groupId>
      <artifactId>my-native-library</artifactId>
      <version>1.0.0</version>
      <classifier>${os.detected.classifier}</classifier>
    </dependency>
  </dependencies>
</project>

Generating a platform-dependent dependency

Use ${os.detected.classifier} as the classifier of the produced JAR:

<project>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-jar-plugin</artifactId>
        <configuration>
          <classifier>${os.detected.classifier}</classifier>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

Customized deployments for specific releases of Linux

If you need to customize your deployment based on a specific release of Linux, a few other variables may be made available.

  • ${os.detected.release}: provides the ID for the linux release.
  • ${os.detected.release.version}: provides version ID for this linux release. Only available if ${os.detected.release} is also available.
  • ${os.detected.release.like.<variant>}: Identifies a linux release that this release is "like" (for example, ubuntu is "like" debian). Only available if ${os.detected.release} is also available. An entry will always be made for os.detected.release.like.${os.detected.release}.

For most Linux distributions, these values are populated from the ID, ID_LIKE, and VERSION_ID entries in /etc/os-release or /usr/lib/os-release.

Older variants of Red Hat

If /etc/os-release and /usr/lib/os-release are unavailable, then /etc/redhat-release is inspected. If it contains CentOS, Fedora, or Redhat Enterprise Linux then ${os.detected.release} will be set to centos, fedora, or rhel respectively (other variants are unsupported). "Like" entries will be created for ${os.detected.release} as well as rhel and fedora. The ${os.detected.release.version} variable is currently not set.

Customizing the classifier

You can configure the os-maven-plugin to automatically append a particular "like" value to ${os.detected.classifier}. This greatly simplifies the deployment for artifacts that are different across Linux distributions. The plugin looks for a property named os.detection.classifierWithLikes, which is a comma-separated list of "like" values. The first value found which matches an existing ${os.detected.release.like.<variant>} property will be automatically appended to the classifier.

<project>
  <properties>
    <os.detection.classifierWithLikes>debian,rhel</os.detection.classifierWithLikes>
  </properties>

  <build>
    <extensions>
      <extension>
        <groupId>kr.motd.maven</groupId>
        <artifactId>os-maven-plugin</artifactId>
        <version>1.7.0</version>
      </extension>
    </extensions>
  </build>
</project>

This will result in a ${os.detected.classifier} of linux-<arch>-debian on debian-like systems, linux-<arch>-rhel on rhel systems, and the default of <os>-<arch> on everything else.

Issues with Eclipse m2e or other IDEs

If you are using IntelliJ IDEA, you should not have any problem.

If you are using Eclipse, you need to install an additional Eclipse plugin because m2e does not evaluate the extension specified in a pom.xml. Download os-maven-plugin-1.7.0.jar and put it into the <ECLIPSE_HOME>/dropins directory.

(As you might have noticed, os-maven-plugin is a Maven extension, a Maven plugin, and an Eclipse plugin.)

Alternatively, in some projects it may be possible to add the plugin to the build lifecycle instead of using it as an extension. Remove the plugin from the <extensions> section of the POM and place it into the <build><plugins> section instead:

<plugin>
  <groupId>kr.motd.maven</groupId>
  <artifactId>os-maven-plugin</artifactId>
  <version>1.7.0</version>
  <executions>
    <execution>
      <phase>initialize</phase>
      <goals>
        <goal>detect</goal>
      </goals>
    </execution>
  </executions>
</plugin>

If you are using other IDEs such as NetBeans, you need to set the system properties os-maven-plugin sets manually when your IDE is launched. You usually use JVM's -D flags like the following:

-Dos.detected.name=linux -Dos.detected.arch=x86_64 -Dos.detected.classifier=linux-x86_64

Alternatively, you can hardcode the properties in the local Maven settings. Add the following sections to settings.xml (specify property values according to your OS configuration):

<profiles>
  <profile>
    <id>os-properties</id>
    <properties>
      <os.detected.name>linux</os.detected.name>
      <os.detected.arch>x86_64</os.detected.arch>
      <os.detected.classifier>linux-x86_64</os.detected.classifier>
    </properties>
  </profile>
</profiles>

<activeProfiles>
  <activeProfile>os-properties</activeProfile>
</activeProfiles>

项目简介

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源项目地址

https://github.com/trustin/os-maven-plugin

发行版本 4

os-maven-plugin-1.7.0

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