[ExM Users] stc unsupported class error

[Ketan Maheshwari]

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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