[ExM Users] stc unsupported class error

[Ketan Maheshwari]

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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