Use separate dependency as per the platform

Question

I have to include different dependencies according to the platform, for instance windows and linux using gradle/maven.

How can I make sure I only use the dependency needed for windows while building windows jar and linux while creating linux jar.

Answer 1

Maven pom.xml

For Example,

• SWT for Windows and Linux is different.
• and when I use jpackage, On Windows, icon file is ico, On Linux, icon file is png

    <dependencies>
        <dependency>
            <groupId>${swt.groupId}</groupId>
            <artifactId>${swt.artifactId}</artifactId>
            <version>${swt.version}</version>
        </dependency>
...

and Add profile

    <profiles>

        <profile>
            <id>linux</id>
            <activation>
                <os>
                    <name>Linux</name>
                    <arch>amd64</arch>
                </os>
            </activation>
            <properties>
                <swt.groupId>org.eclipse.platform</swt.groupId>
                <swt.artifactId>org.eclipse.swt.gtk.linux.x86_64</swt.artifactId>
                <swt.version>3.119.0</swt.version>
                <zname>linux_x86_64</zname>
                <iconType>png</iconType>
                <zformat>tar.gz</zformat>
            </properties>
        </profile>


<profile>
            <id>windows</id>
            <activation>
                <os>
                    <name>Windows 10</name>
                    <arch>amd64</arch>
                </os>
            </activation>
            <properties>
                <swt.groupId>org.eclipse.platform</swt.groupId>
                <swt.artifactId>org.eclipse.swt.win32.win32.x86_64</swt.artifactId>
                <swt.version>3.119.0</swt.version>
                <zname>windows_x86_64</zname>
                <iconType>ico</iconType>
                <zformat>zip</zformat>
            </properties>
        </profile>
...

How to know your activation os name and arch value ?

Run mvn help:system | grep "os\." on Linux

get result:

os.name=Linux os.version=5.13.0-40-generic os.arch=amd64

Run mvn help:system | findstr "os\." on Windows

get result:

os.name=Windows 10 os.version=10.0 os.arch=amd64

Mapping os name and os arch into profile -> activation -> os -> name and os -> arch, then config profile -> properties Set the corresponding value into swt.groupId,swt.artifactId,swt.version.

When you run mvn clean package , maven will auto select profile activation by mapping to os.name and os.arch value.