Re: [gentoo-user] Switching current java-vm for a single application

[Leonardo Guilherme]

Problem is, the SenchaCmd script runs java directly, which resolves to
/usr/bin/java, which itself is a script that checks the user choice
regarding the selected java-vm: setting JAVA_HOME does nothing to fix that.
I can edit the SenchaCmd script to run java directly, that would be the
quickfix.

Thanks for the input.

Em seg, 1 de fev de 2016 às 13:41, Alon Bar-Lev 
escreveu:

> On 31 January 2016 at 19:17, Leonardo Guilherme
>  wrote:
> >
> > Hello.
> >
> > I'm using OpenJDK JVM regularly on my machine instead of Oracle's one,
> primarily because of the infinality patches and because I prefer open
> source software.
> >
> > There are some applications, though, that do not play ball with it
> (namely, SenchaCmd) and I have to keep switching back and forth between
> installed java-vms just to run it.
> >
> > I know nothing about Java or its environment, is there a way to specify
> the java-vm just for this application instead of doing "eselect java-vm set
> user 1; sencha *stuff*; eselect java-vm set user 3" everytime?
> >
> > Is there a set of environment variables that can do this? Shall I wrap
> the command in a shell script? Ideas?
>
> Usually, every [well behaved] java application has JAVA_HOME or
> similar environment variable to tell it where java is.
> You can find a valid java homes at /usr/lib/jvm/*/jre or if you
> manually extracted oracle it will probably live in /opt/xxx.
>
> What you should do is go over this SenchaCmd startup script and find
> what it expects.
>
> Regards,
> Alon
>
>

Re: [gentoo-user] Switching current java-vm for a single application

[Alon Bar-Lev]

If all what script is doing is executing "java", just add the right
JRE to your PATH as first element.

On 3 February 2016 at 01:04, Leonardo Guilherme
 wrote:
> Problem is, the SenchaCmd script runs java directly, which resolves to
> /usr/bin/java, which itself is a script that checks the user choice
> regarding the selected java-vm: setting JAVA_HOME does nothing to fix that.
> I can edit the SenchaCmd script to run java directly, that would be the
> quickfix.
>
> Thanks for the input.
>
> Em seg, 1 de fev de 2016 às 13:41, Alon Bar-Lev 
> escreveu:
>>
>> On 31 January 2016 at 19:17, Leonardo Guilherme
>>  wrote:
>> >
>> > Hello.
>> >
>> > I'm using OpenJDK JVM regularly on my machine instead of Oracle's one,
>> > primarily because of the infinality patches and because I prefer open 
>> > source
>> > software.
>> >
>> > There are some applications, though, that do not play ball with it
>> > (namely, SenchaCmd) and I have to keep switching back and forth between
>> > installed java-vms just to run it.
>> >
>> > I know nothing about Java or its environment, is there a way to specify
>> > the java-vm just for this application instead of doing "eselect java-vm set
>> > user 1; sencha *stuff*; eselect java-vm set user 3" everytime?
>> >
>> > Is there a set of environment variables that can do this? Shall I wrap
>> > the command in a shell script? Ideas?
>>
>> Usually, every [well behaved] java application has JAVA_HOME or
>> similar environment variable to tell it where java is.
>> You can find a valid java homes at /usr/lib/jvm/*/jre or if you
>> manually extracted oracle it will probably live in /opt/xxx.
>>
>> What you should do is go over this SenchaCmd startup script and find
>> what it expects.
>>
>> Regards,
>> Alon
>>
>

Re: [gentoo-user] Switching current java-vm for a single application

[R0b0t1]

It should be possible to just run the Oracle binary directly. The
configuration necessary for an application should be entirely
contained within that application. As far as I know, everything else
is based on an interface which is mostly standard (excepting things
like the foreign function interface, which at most would require you
to point to a different .so file should you use any).

Re: [gentoo-user] Switching current java-vm for a single application

[Alon Bar-Lev]

On 31 January 2016 at 19:17, Leonardo Guilherme
 wrote:
>
> Hello.
>
> I'm using OpenJDK JVM regularly on my machine instead of Oracle's one, 
> primarily because of the infinality patches and because I prefer open source 
> software.
>
> There are some applications, though, that do not play ball with it (namely, 
> SenchaCmd) and I have to keep switching back and forth between installed 
> java-vms just to run it.
>
> I know nothing about Java or its environment, is there a way to specify the 
> java-vm just for this application instead of doing "eselect java-vm set user 
> 1; sencha *stuff*; eselect java-vm set user 3" everytime?
>
> Is there a set of environment variables that can do this? Shall I wrap the 
> command in a shell script? Ideas?

Usually, every [well behaved] java application has JAVA_HOME or
similar environment variable to tell it where java is.
You can find a valid java homes at /usr/lib/jvm/*/jre or if you
manually extracted oracle it will probably live in /opt/xxx.

What you should do is go over this SenchaCmd startup script and find
what it expects.

Regards,
Alon

[gentoo-user] Switching current java-vm for a single application

[Leonardo Guilherme]

Hello.

I'm using OpenJDK JVM regularly on my machine instead of Oracle's one,
primarily because of the infinality patches and because I prefer open
source software.

There are some applications, though, that do not play ball with it (namely,
SenchaCmd) and I have to keep switching back and forth between installed
java-vms just to run it.

I know nothing about Java or its environment, is there a way to specify the
java-vm just for this application instead of doing "eselect java-vm set
user 1; sencha *stuff*; eselect java-vm set user 3" everytime?

Is there a set of environment variables that can do this? Shall I wrap the
command in a shell script? Ideas?