[Scons-users] SCons Intermittent parallel build failures

[Brady Johnson]

Dirk,

Thanks for the info.

One of the main reasons I created the SccfJava() builder was to add every
entry in the JAVACLASSPATH as a Depends(), as follows:

    for item in classpath_list:
        if type(item) is str:
            for classpath in item.split(':'):
                env.Depends(java_target, classpath)
        else:
            # Then its a target
            env.Depends(java_target, item)

Regards,

Brady


On Mon, Mar 31, 2014 at 10:58 PM, Dirk Bächle <tshortik at gmx.de> wrote:


>  Hi Brady,

>

>

> On 31.03.2014 21:35, Brady Johnson wrote:

>

>

>  Hello all,

>

>  I *occasionally *get build failures when doing parallel builds while

> compiling java code.

>

>  The dependencies are very clear, as follows:

> 1) WsCommon java code is compiled

> 2) The WsCommon.jar file is created, specifying the classes from 1) as the

> source

> 3) The WsCommon.jar target is used in the classpath to compile other java

> code, and also as a source to a WAR file builder.

>

>  Here is an excerpt that I can show from the SConscript:

>

>    tclass = env.SccfJava(target='WsCommon/classes',

>                       source='WsCommon/src/main/java',

>                       JAVACLASSPATH=ws_common_classpath)

>  target_WsCommon_jar = env.SccfJar(target='WsCommon.jar',

> source='WsCommon/classes')

>  tclass = env.SccfJava(target='DomainIpService/classes',

>                        source='DomainIpService/src/main/java',

>                        JAVACLASSPATH=[target_WsCommon_jar,

>                                       ws_common_classpath,

>                                       ...])

>

>

>

> I'm no Java expert, but for this to work properly the JAR file would have

> to get added as implicit dependency, based on appearing in the

> JAVACLASSPATH variable. I checked the core sources for v2.3.1, but this

> doesn't seem to be supported for the standard Java() builder.

>

> I guess you'll either have to fix your SccfJava(), or explicitly add a

> dependency as follows:

>

>

>    tclass = env.SccfJava(target='DomainIpService/classes',

>                          source='DomainIpService/src/main/java',

>                          JAVACLASSPATH=[target_WsCommon_jar,

>                                         ws_common_classpath,

>                                         ...])

>    env.Depends(tclass, target_WsCommon_jar)

>

> Hope this helps you any further.

>

> Best regards,

>

> Dirk

>

>

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