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Diffstat (limited to 'doc/languages-frameworks/java.xml')
| -rw-r--r-- | doc/languages-frameworks/java.xml | 40 |
1 files changed, 9 insertions, 31 deletions
diff --git a/doc/languages-frameworks/java.xml b/doc/languages-frameworks/java.xml index 68a1a097984de..bf0fc48839223 100644 --- a/doc/languages-frameworks/java.xml +++ b/doc/languages-frameworks/java.xml @@ -15,37 +15,24 @@ stdenv.mkDerivation { buildPhase = "ant"; } </programlisting> - Note that <varname>jdk</varname> is an alias for the OpenJDK (self-built - where available, or pre-built via Zulu). Platforms with OpenJDK not (yet) in - Nixpkgs (<literal>Aarch32</literal>, <literal>Aarch64</literal>) point to the - (unfree) <literal>oraclejdk</literal>. + Note that <varname>jdk</varname> is an alias for the OpenJDK (self-built where available, or pre-built via Zulu). Platforms with OpenJDK not (yet) in Nixpkgs (<literal>Aarch32</literal>, <literal>Aarch64</literal>) point to the (unfree) <literal>oraclejdk</literal>. </para> <para> - JAR files that are intended to be used by other packages should be installed - in <filename>$out/share/java</filename>. JDKs have a stdenv setup hook that - add any JARs in the <filename>share/java</filename> directories of the build - inputs to the <envar>CLASSPATH</envar> environment variable. For instance, if - the package <literal>libfoo</literal> installs a JAR named - <filename>foo.jar</filename> in its <filename>share/java</filename> - directory, and another package declares the attribute + JAR files that are intended to be used by other packages should be installed in <filename>$out/share/java</filename>. JDKs have a stdenv setup hook that add any JARs in the <filename>share/java</filename> directories of the build inputs to the <envar>CLASSPATH</envar> environment variable. For instance, if the package <literal>libfoo</literal> installs a JAR named <filename>foo.jar</filename> in its <filename>share/java</filename> directory, and another package declares the attribute <programlisting> buildInputs = [ libfoo ]; nativeBuildInputs = [ jdk ]; </programlisting> - then <envar>CLASSPATH</envar> will be set to - <filename>/nix/store/...-libfoo/share/java/foo.jar</filename>. + then <envar>CLASSPATH</envar> will be set to <filename>/nix/store/...-libfoo/share/java/foo.jar</filename>. </para> <para> - Private JARs should be installed in a location like - <filename>$out/share/<replaceable>package-name</replaceable></filename>. + Private JARs should be installed in a location like <filename>$out/share/<replaceable>package-name</replaceable></filename>. </para> <para> - If your Java package provides a program, you need to generate a wrapper - script to run it using the OpenJRE. You can use - <literal>makeWrapper</literal> for this: + If your Java package provides a program, you need to generate a wrapper script to run it using the OpenJRE. You can use <literal>makeWrapper</literal> for this: <programlisting> nativeBuildInputs = [ makeWrapper ]; @@ -56,30 +43,21 @@ installPhase = --add-flags "-cp $out/share/java/foo.jar org.foo.Main" ''; </programlisting> - Note the use of <literal>jre</literal>, which is the part of the OpenJDK - package that contains the Java Runtime Environment. By using - <literal>${jre}/bin/java</literal> instead of - <literal>${jdk}/bin/java</literal>, you prevent your package from depending - on the JDK at runtime. + Note the use of <literal>jre</literal>, which is the part of the OpenJDK package that contains the Java Runtime Environment. By using <literal>${jre}/bin/java</literal> instead of <literal>${jdk}/bin/java</literal>, you prevent your package from depending on the JDK at runtime. </para> <para> - Note all JDKs passthru <literal>home</literal>, so if your application - requires environment variables like <envar>JAVA_HOME</envar> being set, that - can be done in a generic fashion with the <literal>--set</literal> argument - of <literal>makeWrapper</literal>: + Note all JDKs passthru <literal>home</literal>, so if your application requires environment variables like <envar>JAVA_HOME</envar> being set, that can be done in a generic fashion with the <literal>--set</literal> argument of <literal>makeWrapper</literal>: <programlisting> --set JAVA_HOME ${jdk.home} </programlisting> </para> <para> - It is possible to use a different Java compiler than <command>javac</command> - from the OpenJDK. For instance, to use the GNU Java Compiler: + It is possible to use a different Java compiler than <command>javac</command> from the OpenJDK. For instance, to use the GNU Java Compiler: <programlisting> nativeBuildInputs = [ gcj ant ]; </programlisting> - Here, Ant will automatically use <command>gij</command> (the GNU Java - Runtime) instead of the OpenJRE. + Here, Ant will automatically use <command>gij</command> (the GNU Java Runtime) instead of the OpenJRE. </para> </section> |