[ExM Users] stc unsupported class error

[Ketan Maheshwari]

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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