[ExM Users] stc unsupported class error

[Tim Armstrong]

Can you check that the PATH is exported, e.g:

export | grep PATH


On Mon, Apr 28, 2014 at 2:25 PM, Ketan Maheshwari <ketan at mcs.anl.gov> wrote:

> Strange:
>
> $ stc -v
> STC: Swift-Turbine Compiler
>  for Turbine: 0.3.0
> TURBINE_INSTALL=
> TURBINE_HOME=/home/ketan/exm-install/turbine
> Using Java: /usr/bin/java
> $ which java
> /homes/ketan/jdk1.7.0_07/bin/java
>
>
>
>
> On Mon, Apr 28, 2014 at 2:11 PM, Tim Armstrong <tim.g.armstrong at gmail.com>wrote:
>
>>  Hmm, the code to locate java is really simple, it does a "which java"
>> and that's all.  Is your path variable being exported after you add Java to
>> it?
>>
>> You can get stc to report which java it's using with the lower case -v
>> flag too.
>>
>>  - Tim
>>
>>
>> On Mon, Apr 28, 2014 at 12:58 PM, Ketan Maheshwari <ketan at mcs.anl.gov>wrote:
>>
>>> It appears so. I have my own java in PATH and am using the same for
>>> building and running.
>>>
>>>
>>>  On Mon, Apr 28, 2014 at 11:15 AM, Tim Armstrong <
>>> tim.g.armstrong at gmail.com> wrote:
>>>
>>>>   It should default to the java in PATH - is it not doing that for
>>>> you?
>>>>
>>>>  Currently it only uses two things to resolve java: the -j flag, and
>>>> "which java" - other environment variables, etc, shouldn't affect it.
>>>>
>>>>  - Tim
>>>>
>>>>
>>>> On Mon, Apr 28, 2014 at 11:04 AM, Ketan Maheshwari <ketan at mcs.anl.gov>wrote:
>>>>
>>>>> Hi Tim,
>>>>>
>>>>>  stc -V does not seem to show which java it is running with:
>>>>>
>>>>>  $ stc -V user.swift
>>>>> stc: Optimization level 2
>>>>>  Exception in thread "main" java.lang.UnsupportedClassVersionError:
>>>>> exm/stc/ui/Main : Unsupported major.minor version 51.0
>>>>>
>>>>>  The -j option works but in my case, the stc call is part of a
>>>>> generic script and this will involve detecting java on systems to run with.
>>>>> Is it somehow possible to tell stc to use the same java in current env at
>>>>> the time of build and run.
>>>>>
>>>>>  Thanks,
>>>>> Ketan
>>>>>
>>>>>
>>>>>  On Mon, Apr 28, 2014 at 10:56 AM, Tim Armstrong <
>>>>> tim.g.armstrong at gmail.com> wrote:
>>>>>
>>>>>>   I haven't seen that one before.  It sounds like it's being run
>>>>>> with an older version of Java than it was compiled with.
>>>>>>
>>>>>> Java class version 51.0 corresponds to java 7 (
>>>>>> http://en.wikipedia.org/wiki/Java_class_file#General_layout), so it
>>>>>> seems like it must be getting run with an older version.
>>>>>>
>>>>>>  You could try the -V switch to STC to see which java it's being run
>>>>>> with, and then -j /path/to/jvm/bin/java to force a different java version.
>>>>>>
>>>>>>  - Tim
>>>>>>
>>>>>>
>>>>>>   On Mon, Apr 28, 2014 at 10:33 AM, Ketan Maheshwari <
>>>>>> ketan at mcs.anl.gov> wrote:
>>>>>>
>>>>>>>   Hi,
>>>>>>>
>>>>>>>  While running stc on MCS workstations, I get:
>>>>>>>
>>>>>>>  ./genleaf vanilla mockdock.c mockdock.h user.swift
>>>>>>>  Exception in thread "main" java.lang.UnsupportedClassVersionError:
>>>>>>> exm/stc/ui/Main : Unsupported major.minor version 51.0
>>>>>>>
>>>>>>>  Somehow the java versions at build and runtime are getting mixed
>>>>>>> up.
>>>>>>>
>>>>>>>  This is how I build:
>>>>>>>
>>>>>>>  export JAVA_HOME=/homes/ketan/jdk1.7.0_07
>>>>>>>  ant install -Ddist.dir=/home/ketan/exm-install/stc
>>>>>>>
>>>>>>>  I have the same java in my env:
>>>>>>>
>>>>>>>  $ which java
>>>>>>> /homes/ketan/jdk1.7.0_07/bin/java
>>>>>>>
>>>>>>>
>>>>>>>  Any suggestions to fix this?
>>>>>>>
>>>>>>>  Thanks,
>>>>>>> Ketan
>>>>>>>
>>>>>>>   _______________________________________________
>>>>>>> ExM-user mailing list
>>>>>>> ExM-user at lists.mcs.anl.gov
>>>>>>> https://lists.mcs.anl.gov/mailman/listinfo/exm-user
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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