Re: Help, Setting classpath, using external java libraries with Kawa

[Vasantha Ganesh <vasanthaganesh dot k at gmail dot com>]

for java it was actually:

java -cp /usr/share/java/jnr-ffi.jar:.:/usr/lib/java/jffi.jar:/usr/lib/java/jffi-native.jar:/usr/share/java/objectweb-asm/asm.jar
Getpid

Vasantha Ganesh K.

On Sat, Apr 1, 2017 at 6:41 PM, Vasantha Ganesh
<vasanthaganesh.k@gmail.com> wrote:
> Hello,
>   I'm trying to convert this(http://lpaste.net/354170) Java code into
> Scheme(Kawa) (http://lpaste.net/354171).
>
> I ran this for java and it ran without hickups,
>
> java -cp /usr/share/java/jnr-ffi.jar:.:/usr/lib/java/jffi.jar:/usr/lib/java/jffi-native.jar:/usr/share/java/objectweb-asm/asm.jar
> Getpid.java
>
> and for kawa, I ran this:
>
> kawa -J -cp /usr/share/java/jnr-ffi.jar:.:/usr/lib/java/jffi.jar:/usr/lib/java/jffi-native.jar:/usr/share/java/objectweb-asm/asm.jar
> getpid.scm
>
> The exact error that I get is:
>
> Error: Could not find or load main class
>
> Thank you,
>
> Vasantha Ganesh K.
>
> On Sat, Apr 1, 2017 at 6:24 PM, Per Bothner <per@bothner.com> wrote:
>> On 04/01/2017 02:35 AM, Vasantha Ganesh wrote:
>>>
>>> Hello Bothner,
>>>   This is probably a noob question. In Java while compiling and using
>>> external libraries  we use -classpath option. How to use external java
>>> libraries with Kawa?
>>>
>>> I read https://www.gnu.org/software/kawa/Compiling.html
>>>
>>> Then I tried to compile scheme program with `--main` and `-C` options
>>> and generated a .class file. Then I tried to  run it with Java like a
>>> normal class file by setting -classpath option, but I get:
>>>
>>> Error: Could not find or load main class somescript
>>>
>>> I also tried the -J option with kawa and I get
>>>
>>> Error: Could not find or load main class
>>>
>>> I also tried to set the CLASSPATH to the external library (jar file),
>>> it does not work.
>>
>>
>> Show us the actual commands you're trying, including the command used
>> to create the jar file.
>>
>> Both setting CLASSPATH and using -J should work.
>>
>> Note you have to use a separate -J option for each "word":
>>
>> kawa -J-cp -Jfoo.jar
>>
>> is roughly equivalent to
>>
>> java -cp foo.jar kawa.repl
>>
>> On 04/01/2017 04:23 AM, Sudarshan S Chawathe wrote:>> From: Vasantha Ganesh
>> <vasanthaganesh.k@gmail.com>
>>
>>> If I understand your question correctly then it seems you need to use
>>> the -D option to define java.library.path suitably.  Example:
>>>
>>>   kawa -Djava.library.path="/where/the/java/libs/are:/another/one:/so/on"
>>
>>
>> The java.library.path relates to native libraries (.so/.dll, not .class or
>> .jar files).
>> It don't think it is relevant here.
>> --
>>         --Per Bothner
>> per@bothner.com   http://per.bothner.com/