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http://jira.codehaus.org/browse/MGWT-61?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=174599#action_174599
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nicolas de loof commented on MGWT-61:
-------------------------------------
Does GWT 1.5 also support this ?
> Under GWT 1.6.x, when compiling multiple modules, specify them all in a
> single invocation to the GWT Compiler
> -------------------------------------------------------------------------------------------------------------
>
> Key: MGWT-61
> URL: http://jira.codehaus.org/browse/MGWT-61
> Project: Maven 2.x GWT Plugin
> Issue Type: Improvement
> Affects Versions: 1.1
> Environment: GWT 1.6.4, maven-gwt-plugin 1.1-SNAPSHOT, Linux
> Reporter: Mark Renouf
>
> GWT 1.6 can accept multiple modules as arguments to the Compiler, and will
> compile each of them sequentially. This seems provide a significant boost
> even withing a trivial project. There is likely savings from startup time of
> the compiler, and possibly some internal caching from previous passes.
> I have a sample project to demonstrate this. I've configured three GWT
> modules, and specified them in the <modules> element. The following is the
> generated compile.sh script:
> #!/bin/bash
> "/usr/lib/jvm/java-6-sun-1.6.0.13/jre/bin/java" -Xmx512m -cp
> "/home/mark/.m2/repository/org/codehaus/mojo/gwt-maven-plugin/1.1-SNAPSHOT/gwt-maven-plugin-1.1-SNAPSHOT.jar":"/home/mark/Applications/gwt-linux-1.6.4/gwt-dev-linux.jar"
> org.codehaus.mojo.gwt.fork.ForkBooter
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt.classpath"
> com.google.gwt.dev.Compiler -gen
> "/home/mark/workspace/aerva/gwt-1-6-example/target/.generated" -logLevel INFO
> -style OBF -war
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1"
> -localWorkers 2 com.example.app1.Module1
> "/usr/lib/jvm/java-6-sun-1.6.0.13/jre/bin/java" -Xmx512m -cp
> "/home/mark/.m2/repository/org/codehaus/mojo/gwt-maven-plugin/1.1-SNAPSHOT/gwt-maven-plugin-1.1-SNAPSHOT.jar":"/home/mark/Applications/gwt-linux-1.6.4/gwt-dev-linux.jar"
> org.codehaus.mojo.gwt.fork.ForkBooter
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt.classpath"
> com.google.gwt.dev.Compiler -gen
> "/home/mark/workspace/aerva/gwt-1-6-example/target/.generated" -logLevel INFO
> -style OBF -war
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1"
> -localWorkers 2 com.example.app2.Module2
> "/usr/lib/jvm/java-6-sun-1.6.0.13/jre/bin/java" -Xmx512m -cp
> "/home/mark/.m2/repository/org/codehaus/mojo/gwt-maven-plugin/1.1-SNAPSHOT/gwt-maven-plugin-1.1-SNAPSHOT.jar":"/home/mark/Applications/gwt-linux-1.6.4/gwt-dev-linux.jar"
> org.codehaus.mojo.gwt.fork.ForkBooter
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt.classpath"
> com.google.gwt.dev.Compiler -gen
> "/home/mark/workspace/aerva/gwt-1-6-example/target/.generated" -logLevel INFO
> -style OBF -war
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1"
> -localWorkers 2 com.example.app3.Module3
> And the output of running it: (total: 38s)
> running main class com.google.gwt.dev.Compiler with args [-gen,
> /home/mark/workspace/aerva/gwt-1-6-example/target/.generated, -logLevel,
> INFO, -style, OBF, -war,
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1,
> -localWorkers, 2, com.example.app1.Module1]
> Compiling module com.example.app1.Module1
> Compiling 1 permutations
> Permutation compile succeeded
> Linking into
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1
> Link succeeded
> Compilation succeeded -- 12.524s
> running main class com.google.gwt.dev.Compiler with args [-gen,
> /home/mark/workspace/aerva/gwt-1-6-example/target/.generated, -logLevel,
> INFO, -style, OBF, -war,
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1,
> -localWorkers, 2, com.example.app2.Module2]
> Compiling module com.example.app2.Module2
> Compiling 1 permutations
> Permutation compile succeeded
> Linking into
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1
> Link succeeded
> Compilation succeeded -- 12.332s
> running main class com.google.gwt.dev.Compiler with args [-gen,
> /home/mark/workspace/aerva/gwt-1-6-example/target/.generated, -logLevel,
> INFO, -style, OBF, -war,
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1,
> -localWorkers, 2, com.example.app3.Module3]
> Compiling module com.example.app3.Module3
> Compiling 1 permutations
> Permutation compile succeeded
> Linking into
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1
> Link succeeded
> Compilation succeeded -- 13.293s
> For GWT 1.6.x we can change it to:
> #!/bin/bash
> "/usr/lib/jvm/java-6-sun-1.6.0.13/jre/bin/java" -Xmx512m -cp
> "/home/mark/.m2/repository/org/codehaus/mojo/gwt-maven-plugin/1.1-SNAPSHOT/gwt-maven-plugin-1.1-SNAPSHOT.jar":"/home/mark/Applications/gwt-linux-1.6.4/gwt-dev-linux.jar"
> org.codehaus.mojo.gwt.fork.ForkBooter
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt.classpath"
> com.google.gwt.dev.Compiler -gen
> "/home/mark/workspace/aerva/gwt-1-6-example/target/.generated" -logLevel INFO
> -style OBF -war
> "/home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1"
> -localWorkers 2 com.example.app1.Module1 com.example.app2.Module2
> com.example.app3.Module3
> And the output: (total 23.1s)
> running main class com.google.gwt.dev.Compiler with args [-gen,
> /home/mark/workspace/aerva/gwt-1-6-example/target/.generated, -logLevel,
> INFO, -style, OBF, -war,
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1,
> -localWorkers, 2, com.example.app1.Module1, com.example.app2.Module2,
> com.example.app3.Module3]
> Compiling module com.example.app1.Module1
> Compiling 1 permutations
> Permutation compile succeeded
> Linking into
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1
> Link succeeded
> Compilation succeeded -- 12.329s
> Compiling module com.example.app2.Module2
> Compiling 1 permutations
> Permutation compile succeeded
> Linking into
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1
> Link succeeded
> Compilation succeeded -- 6.165s
> Compiling module com.example.app3.Module3
> Compiling 1 permutations
> Permutation compile succeeded
> Linking into
> /home/mark/workspace/aerva/gwt-1-6-example/target/gwt-1-6-example-1
> Link succeeded
> Compilation succeeded -- 4.703s
> (PS: I've already filed a bug with GWT about the nesting of log output after
> each module :-P)
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