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From Jan Matèrne (jhm) <apa...@materne.de>
Subject AW: Skipping a javah task with Java 10 and higher
Date Wed, 08 May 2019 04:49:34 GMT
Fine.
But I see an error in my example: 
It executes the target and javah only on Java10 and higher.
For Java9 and lower you have to use:
  <target unless="java10+">
  <javah if:unset="java10+" ...

Jan

> -----Ursprüngliche Nachricht-----
> Von: 大平怜 [mailto:rei.odaira@gmail.com]
> Gesendet: Dienstag, 7. Mai 2019 17:26
> An: Ant Users List
> Betreff: Re: Skipping a javah task with Java 10 and higher
> 
> Thanks much for your help!  The javaversion condition works perfectly.
> 
> 
> Rei Odaira
> 
> 2019年5月7日(火) 0:58 Jan Matèrne (jhm) <apache@materne.de>:
> 
> > With xml namespaces like if:set you could exclude individual tasks.
> > http://ant.apache.org/manual/ifunless.html
> >
> >
> > <project>
> >     <condition property="java10+">
> >        <javaversion atleast="10"/>
> >     </condition>
> >
> >     <target name="do-only-on-newer-versions" if="java10+">
> >         ...
> >     </target>
> >
> >     <target name="compile">
> >         <javah ... if:set="java10+" xmlns:if="ant:if"/>
> >         <javac ... />
> >     </target>
> > </project>
> >
> >
> > Jan
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: Jaikiran Pai [mailto:jaikiran@apache.org]
> > > Gesendet: Dienstag, 7. Mai 2019 07:38
> > > An: user@ant.apache.org
> > > Betreff: Re: Skipping a javah task with Java 10 and higher
> > >
> > > Recent versions of Ant (starting 1.10.2) have a "javaversion"
> > > condition[1] which you can use to setup a "property" which can then
> > > be used with "if"/"unless" attribute on a target.
> > >
> > > Here's an example:
> > >
> > > <target name="the-one-which-has-javah-task" depends="check-java-
> > > version"
> > > unless="java10+">
> > >     ...
> > > </target>
> > >
> > > <target name="check-java-version">
> > >     <condition property="java10+">
> > >       <javaversion atleast="10"/>
> > >     </condition>
> > > </target>
> > >
> > > [1] https://ant.apache.org/manual/Tasks/conditions.html#javaversion
> > >
> > > -Jaikiran
> > >
> > > On 07/05/19 10:53 AM, 大平怜 wrote:
> > > > Hello,
> > > >
> > > > My build.xml has a javah task. Since it no longer works with Java
> > > > 10 and higher, I added nativeHeaderDir to a javac task, and it is
> > > working fine.
> > > > However, I still want to keep the javah task, so that the same
> > > > build.xml works for older Java.
> > > >
> > > > How can I make ant skip the javah task only when running with
> Java
> > > > 10 and higher? More generally, is there any way to switch the
> > > > execution path in build.xml, depending on the Java version? Or,
> is
> > > > there any other standard way to migrate a javah task from old
> Java
> > > > to Java
> > > 10/11
> > > > with backward-compatibility being maintained? Appreciate your
> help.
> > > >
> > > >
> > > > Thanks,
> > > > Rei Odaira
> > > >
> > >
> > >
> > > -------------------------------------------------------------------
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> >
> >
> >
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> >
> >


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