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Compiling LZ4-java

The following uses lz4-java-1.2.0.jar as an example. When compiling lz4-java-1.3.0.jar, you only need to change the version number.

Installing Ant 1.9.14

  1. Download the Ant 1.9.14 installation package from the official website.
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    wget https://archive.apache.org/dist/ant/binaries/apache-ant-1.9.14-bin.zip
  2. Decompress the installation package.
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    unzip apache-ant-1.9.14-bin.zip
  3. Install Ant to a directory (for example, /opt/tools/installed).
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    mv apache-ant-1.9.14 /opt/tools/installed/
  4. Set Ant environment variables.
    1. Open the /etc/profile file. 
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      vi /etc/profile
    2. Press i to enter the insert mode and add the following content to the end of the /etc/profile file: 
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      export ANT_HOME=/opt/tools/installed/apache-ant-1.9.14
export PATH=$ANT_HOME/bin:$PATH
    3. Press Esc, type :wq!, and press Enter to save the file and exit.
  5. Make the environment variables take effect.
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    source /etc/profile
  6. Check the Ant version.
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    ant -version

Compiling LZ4-java

  1. Download the source code.
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    wget https://github.com/lz4/lz4-java/archive/1.2.0.zip
  2. Decompress the source code package.
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    unzip 1.2.0.zip
  3. Go to the directory generated after the decompression.
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    cd lz4-java-1.2.0
  4. Modify the build.xml file.
    1. Open the file. 
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      vi lz4-java-1.2.0/build.xml
    2. Press i to enter the insert mode and change http in line 60 to https.

    3. Change the ivy version number in line 29 to 2.5.0.

    4. Press Esc, type :wq!, and press Enter to save the file and exit.
  5. Compile LZ4-java.
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    ant ivy-bootstrap
ant

    The compiled package is in the dist folder of the root directory of compilation.

    Before compilation, ensure that the /root/.ivy2/ directory is empty.