Required Parameters

Name	Type	Since	Description
generateDirectory	File	-	Folder where generated-source will be created (automatically added to compile classpath). Default value is: ${project.build.directory}/generated-sources/gwt.

Optional Parameters

Name	Type	Since	Description
compileReport	boolean	2.1.0-1	add -compileReport parameter to the compiler command line Can be set from command line using '-Dgwt.compiler.compileReport=true'. Default value is: false.
compileSourcesArtifacts	String[]	-	Artifacts to be included as source-jars in GWTCompiler Classpath. Removes the restriction that source code must be bundled inside of the final JAR when dealing with external utility libraries not designed exclusivelly for GWT. The plugin will download the source.jar if necessary. This option is a workaround to avoid packaging sources inside the same JAR when splitting and application into modules. A smaller JAR can then be used on server classpath and distributed without sources (that may not be desirable).
compilerMetrics	boolean	2.5.0-rc1	EXPERIMENTAL: add -XcompilerMetrics parameter to the compiler command line Can be set from the command line using '-Dgwt.compiler.compilerMetrics=true' Default value is: false.
deploy	File	2.3.0-1	The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the webappDirectory directory/jar, and may be the same as the extra directory/jar)
disableAggressiveOptimization	boolean	2.5.0-rc1	EXPERIMENTAL: add -XdisableAggressiveOptimization parameter to the compiler command line Can be set from the command line using '-Dgwt.compiler.disableAggressiveOptimization=true' Default value is: false.
disableCastChecking	boolean	-	EXPERIMENTAL: Disables run-time checking of cast operations. Can be set from command line using '-Dgwt.disableCastChecking=true'. Default value is: false.
disableClassMetadata	boolean	-	EXPERIMENTAL: Disables some java.lang.Class methods (e.g. getName()). Can be set from command line using '-Dgwt.disableClassMetadata=true'. Default value is: false.
disableRunAsync	boolean	-	EXPERIMENTAL: Disables code-splitting. Can be set from command line using '-Dgwt.disableRunAsync=true'. Default value is: false.
draftCompile	boolean	-	Enable faster, but less-optimized, compilations. Can be set from command line using '-Dgwt.draftCompile=true'. This is equivalent to '-Dgwt.compiler.optimizationLevel=0 -Dgwt.compiler.disableAggressiveOptimization=true'. Default value is: false.
enableAssertions	boolean	-	Whether or not to enable assertions in generated scripts (-ea). Default value is: false.
enableClosureCompiler	boolean	2.5.0-rc1	EXPERIMENTAL: add -XenableClosureCompiler parameter to the compiler command line Can be set from the command line using '-Dgwt.compiler.enableClosureCompiler=true' Default value is: false.
extra	File	-	The directory into which extra, non-deployed files will be written. Default value is: ${project.build.directory}/extra.
extraJvmArgs	String	-	Extra JVM arguments that are passed to the GWT-Maven generated scripts (for compiler, shell, etc - typically use -Xmx512m here, or -XstartOnFirstThread, etc). Can be set from command line using '-Dgwt.extraJvmArgs=...', defaults to setting max Heap size to be large enough for most GWT use cases. Default value is: -Xmx512m.
extraParam	boolean	2.1.0-1	add -extra parameter to the compiler command line Can be set from command line using '-Dgwt.extraParam=true'. Default value is: false.
force	boolean	-	Don't try to detect if GWT compilation is up-to-date and can be skipped. Can be set from command line using '-Dgwt.compiler.force=true'. Default value is: false.
fragmentCount	int	2.5.0-rc1	EXPERIMENTAL: add -XfragmentCount parameter to the compiler command line Can be set from the command line using '-Dgwt.compiler.fragmentCount=n' Default value is: -1.
gen	File	-	Location on filesystem where GWT will write generated content for review (-gen option to GWT Compiler). Can be set from command line using '-Dgwt.gen=...' Default value is: ${project.build.directory}/.generated.
genParam	boolean	2.5.0-rc1	Whether to add -gen parameter to the compiler command line Can be set from command line using '-Dgwt.genParam=false'. Defaults to 'true' for backwards compatibility. Default value is: true.
gwtSdkFirstInClasspath	boolean	2.1.0-1	The forked command line will use gwt sdk jars first in classpath. see issue http://code.google.com/p/google-web-toolkit/issues/detail?id=5290 Default value is: false.
inplace	boolean	-	Select the place where GWT application is built. In inplace mode, the warSourceDirectory is used to match the same use case of the war:inplace http://maven.apache.org/plugins/maven-war-plugin/inplace-mojo.html goal. Default value is: false.
jvm	String	1.1	Option to specify the jvm (or path to the java executable) to use with the forking scripts. For the default, the jvm will be the same as the one used to run Maven.
localWorkers	int	-	On GWT 1.6+, number of parallel processes used to compile GWT premutations. Defaults to platform available processors number. Can be unset from command line using '-Dgwt.compiler.localWorkers=n'.
logLevel	String	-	GWT logging level (-logLevel ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL). Can be set from command line using '-Dgwt.logLevel=...' Default value is: INFO.
module	String	-	A single GWT module. Shortcut for <modules> or option to specify a single module from command line
modules	String[]	-	The project GWT modules. If not set, the plugin will scan the project for .gwt.xml files.
optimizationLevel	int	2.1.0-1	add -optimize parameter to the compiler command line the value must be between 0 and 9 by default -1 so no arg to the compiler Can be set from command line using '-Dgwt.compiler.optimizationLevel=n'. Default value is: -1.
persistentunitcache	Boolean	2.5.0-rc1	Whether to use the persistent unit cache or not. Can be set from command line using '-Dgwt.persistentunitcache=...'
persistentunitcachedir	File	2.5.0-rc1	The directory where the persistent unit cache will be created if enabled. Can be set from command line using '-Dgwt.persistentunitcachedir=...'
skip	boolean	-	(no description) Default value is: false.
soycDetailed	boolean	2.1.0-1	add -XsoycDetailed parameter to the compiler command line Can be set from command line using '-Dgwt.compiler.soycDetailed=true'. Default value is: false.
strict	boolean	2.1.0-1	add -strict parameter to the compiler command line Can be set from command line using '-Dgwt.compiler.strict=true'. Default value is: false.
style	String	-	GWT JavaScript compiler output style (-style OBF[USCATED], PRETTY, or DETAILED). Can be set from command line using '-Dgwt.style=...' Default value is: OBF.
timeOut	int	-	Forked process execution timeOut. Usefull to avoid maven to hang in continuous integration server.
treeLogger	boolean	-	Logs output in a graphical tree view. Can be set from command line using '-Dgwt.treeLogger=true'. Default value is: false.
validateOnly	boolean	-	Validate all source code, but do not compile. Can be set from command line using '-Dgwt.validateOnly=true'. Default value is: false.
warSourceDirectory	File	-	Location of the web application static resources (same as maven-war-plugin parameter) Default value is: ${basedir}/src/main/webapp.
webappDirectory	File	-	Location on filesystem where GWT will write output files (-out option to GWTCompiler). Default value is: ${project.build.directory}/${project.build.finalName}.
workDir	File	-	The temp directory is used for temporary compiled files (defaults is system temp directory).

Parameter Details

compileReport:

• Type: boolean
• Since: 2.1.0-1
• Required: No
• Expression: ${gwt.compiler.compileReport}
• Default: false

---

compileSourcesArtifacts:

• Type: java.lang.String[]
• Required: No

---

compilerMetrics:

• Type: boolean
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.compiler.compilerMetrics}
• Default: false

---

deploy:

• Type: java.io.File
• Since: 2.3.0-1
• Required: No

---

disableAggressiveOptimization:

• Type: boolean
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.compiler.disableAggressiveOptimization}
• Default: false

---

disableCastChecking:

• Type: boolean
• Required: No
• Expression: ${gwt.disableCastChecking}
• Default: false

---

disableClassMetadata:

• Type: boolean
• Required: No
• Expression: ${gwt.disableClassMetadata}
• Default: false

---

disableRunAsync:

• Type: boolean
• Required: No
• Expression: ${gwt.disableRunAsync}
• Default: false

---

draftCompile:

• Type: boolean
• Required: No
• Expression: ${gwt.draftCompile}
• Default: false

---

enableAssertions:

• Type: boolean
• Required: No
• Default: false

---

enableClosureCompiler:

• Type: boolean
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.compiler.enableClosureCompiler}
• Default: false

---

extra:

• Type: java.io.File
• Required: No
• Default: ${project.build.directory}/extra

---

extraJvmArgs:

• Type: java.lang.String
• Required: No
• Expression: ${gwt.extraJvmArgs}
• Default: -Xmx512m

---

extraParam:

• Type: boolean
• Since: 2.1.0-1
• Required: No
• Expression: ${gwt.extraParam}
• Default: false

---

force:

• Type: boolean
• Required: No
• Expression: ${gwt.compiler.force}
• Default: false

---

fragmentCount:

• Type: int
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.compiler.fragmentCount}
• Default: -1

---

gen:

• Type: java.io.File
• Required: No
• Expression: ${gwt.gen}
• Default: ${project.build.directory}/.generated

---

genParam:

• Type: boolean
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.genParam}
• Default: true

---

generateDirectory:

• Type: java.io.File
• Required: Yes
• Default: ${project.build.directory}/generated-sources/gwt

---

gwtSdkFirstInClasspath:

• Type: boolean
• Since: 2.1.0-1
• Required: No
• Expression: ${gwt.gwtSdkFirstInClasspath}
• Default: false

---

inplace:

• Type: boolean
• Required: No
• Expression: ${gwt.inplace}
• Default: false

---

jvm:

• Type: java.lang.String
• Since: 1.1
• Required: No
• Expression: ${gwt.jvm}

---

localWorkers:

• Type: int
• Required: No
• Expression: ${gwt.compiler.localWorkers}

---

logLevel:

• Type: java.lang.String
• Required: No
• Expression: ${gwt.logLevel}
• Default: INFO

---

module:

• Type: java.lang.String
• Required: No
• Expression: ${gwt.module}

---

modules:

• Type: java.lang.String[]
• Required: No

---

optimizationLevel:

• Type: int
• Since: 2.1.0-1
• Required: No
• Expression: ${gwt.compiler.optimizationLevel}
• Default: -1

---

persistentunitcache:

• Type: java.lang.Boolean
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.persistentunitcache}

---

persistentunitcachedir:

• Type: java.io.File
• Since: 2.5.0-rc1
• Required: No
• Expression: ${gwt.persistentunitcachedir}

---

skip:

• Type: boolean
• Required: No
• Expression: ${gwt.compiler.skip}
• Default: false

---

soycDetailed:

• Type: boolean
• Since: 2.1.0-1
• Required: No
• Expression: ${gwt.compiler.soycDetailed}
• Default: false

---

strict:

• Type: boolean
• Since: 2.1.0-1
• Required: No
• Expression: ${gwt.compiler.strict}
• Default: false

---

style:

• Type: java.lang.String
• Required: No
• Expression: ${gwt.style}
• Default: OBF

---

timeOut:

• Type: int
• Required: No

---

treeLogger:

• Type: boolean
• Required: No
• Expression: ${gwt.treeLogger}
• Default: false

---

validateOnly:

• Type: boolean
• Required: No
• Expression: ${gwt.validateOnly}
• Default: false

---

warSourceDirectory:

• Type: java.io.File
• Required: No
• Default: ${basedir}/src/main/webapp

---

webappDirectory:

• Type: java.io.File
• Required: No
• Expression: ${gwt.war}
• Default: ${project.build.directory}/${project.build.finalName}

---

workDir:

• Type: java.io.File
• Required: No