Re: Errors migrating to GWT 2.7.0 . Can someone please help me ?

That fails like this:

Unknown argument: -Dgwt.usearchives=false

Google Web Toolkit 2.7.0

Compiler [-logLevel level] [-workDir dir] [-[no]compileReport] [-X[no]checkCasts] [-X[no]classMetadata] [-[no]draftCompile] [-[no]checkAssertions] [-X[no]closureCompiler] [-XfragmentCount numFragments] [-XfragmentMerge numFragments] [-gen dir] [-[no]incrementalCompileWarnings] [-XjsInteropMode [NONE, JS, CLOSURE]] [-missingDepsFile file] [-Xnamespace PACKAGE, NONE] [-optimize level] [-[no]overlappingSourceWarnings] [-[no]saveSource] [-style style] [-[no]failOnError] [-X[no]enforceStrictResources] [-[no]validateOnly] [-sourceLevel [auto, 1.6, 1.7]] [-localWorkers count] [-[no]incremental] [-war dir] [-deploy dir] [-extra dir] [-saveSourceOutput dir] [-XmethodNameDisplayMode NONE | ONLY_METHOD_NAME | ABBREVIATED | FULL] module[s] 

where 

  -logLevel                        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL

  -workDir                         The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)

  -[no]compileReport               Compile a report that tells the "Story of Your Compile". (defaults to OFF)

  -X[no]checkCasts                 EXPERIMENTAL: Insert run-time checking of cast operations. (defaults to ON)

  -X[no]classMetadata              EXPERIMENTAL: Include metadata for some java.lang.Class methods (e.g. getName()). (defaults to ON)

  -[no]draftCompile                Compile quickly with minimal optimizations. (defaults to OFF)

  -[no]checkAssertions             Include assert statements in compiled output. (defaults to OFF)

  -X[no]closureCompiler            EXPERIMENTAL: Compile output Javascript with the Closure compiler for even further optimizations. (defaults to OFF)

  -XfragmentCount                  EXPERIMENTAL: Limits of number of fragments using a code splitter that merges split points.

  -XfragmentMerge                  DEPRECATED (use -XfragmentCount instead): Enables Fragment merging code splitter.

  -gen                             Debugging: causes normally-transient generated types to be saved in the specified directory

  -[no]incrementalCompileWarnings  Whether to show warnings during monolithic compiles for issues that will break in incremental compiles (strict compile errors, strict source directory inclusion, missing dependencies). (defaults to OFF)

  -XjsInteropMode                  Specifies JsInterop mode, either NONE, JS, or CLOSURE (defaults to NONE)

  -missingDepsFile                 Specifies a file into which detailed missing dependency information will be written.

  -Xnamespace                      Puts most JavaScript globals into namespaces. Default: PACKAGE for -draftCompile, otherwise NONE

  -optimize                        Sets the optimization level used by the compiler.  0=none 9=maximum.

  -[no]overlappingSourceWarnings   Whether to show warnings during monolithic compiles for overlapping source inclusion. (defaults to OFF)

  -[no]saveSource                  Enables saving source code needed by debuggers. Also see -debugDir. (defaults to OFF)

  -style                           Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF)

  -[no]failOnError                 Fail compilation if any input file contains an error. (defaults to OFF)

  -X[no]enforceStrictResources     EXPERIMENTAL: Avoid adding implicit dependencies on "client" and "public" for modules that don't define any dependencies. (defaults to OFF)

  -[no]validateOnly                Validate all source code, but do not compile. (defaults to OFF)

  -sourceLevel                     Specifies Java source level (defaults to auto:1.6)

  -localWorkers                    The number of local workers to use when compiling permutations

  -[no]incremental                 Compiles faster by reusing data from the previous compile. (defaults to OFF)

  -war                             The directory into which deployable output files will be written (defaults to 'war')

  -deploy                          The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)

  -extra                           The directory into which extra files, not intended for deployment, will be written

  -saveSourceOutput                Overrides where source files useful to debuggers will be written. Default: saved with extras.

  -XmethodNameDisplayMode          Emit extra information allow chrome dev tools to display Java identifiers in many places instead of JavaScript functions.

and 

  module[s]                        Specifies the name(s) of the module(s) to compile

On Thursday, February 12, 2015 at 4:54:15 PM UTC-6, Jens wrote:

Should be the JRE/JDK you have configured for your project and not the one you launched Eclipse with.

I am on Mac OS and use Oracle JDK 1.7 and haven't seen any gwtar issues yet. Maybe you accidentally have two different GWT versions on classpath?

But as Thomas already said, if you have trouble with the gwtar files you can always use -Dgwt.usearchives=false to disable them.

-- J.

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