CreateProcess error=206, The filename or extension is too long when running gwtCompile

Question

My application is a springboot gradle application. Part of my application involves legacy gwt compile using gradle. It works fine but today when I run the below gradle task, it shows CreateProcess error=206, The filename or extension is too long. What might be went wrong? as it worked before. Any suggested changes to the code below to resolve this issue?

    task compileGwt(dependsOn: classes, type: JavaExec) {
    //ext.buildDir = "${project.buildDir}/resources/main/static"
    ext.buildDir = "${project.rootDir}/src/main/webapp"
    //ext.buildDir = "${project.buildDir}"
    ext.extraDir = "${project.buildDir}/extra"
    ext.generatedDir = "${project.buildDir}/generated"

    inputs.source sourceSets.main.java.srcDirs
    inputs.dir sourceSets.main.output.resourcesDir
    outputs.dir buildDir

    // Workaround for incremental build (GRADLE-1483)
    outputs.upToDateSpec = new org.gradle.api.specs.AndSpec()

    doFirst {
        file(buildDir).mkdirs()
        //classpath.each { println it.name}
    }

    main = 'com.google.gwt.dev.Compiler'

    classpath {
        [
                sourceSets.main.java.srcDirs,           // Java source
                sourceSets.main.output.resourcesDir,    // Generated resources
                sourceSets.main.output.classesDir,      // Generated classes
                sourceSets.main.compileClasspath,       // Deps
        ]
    }

    args =
            [
                    'com.company.application.UI', // Your GWT module
                    '-war', buildDir,
                    '-logLevel', 'INFO',
                    '-style', 'DETAILED',
                    '-localWorkers', '2',
                    '-compileReport',
                    '-gen', generatedDir,
                    '-extra', extraDir,
                    '-draftCompile' // Speeds up compile with 25%
            ]
    maxHeapSize = '1024M'


}

war.dependsOn compileGwt
war {
    from compileGwt.buildDir
}

Below is the updated build.gradle with pathingJar, when I run compileGwt, it gives error saying:Could not find or load main class com.google.gwt.dev.Compiler

apply plugin: "build-app"
apply plugin: 'war'
apply plugin: 'java'

dependencies {

    compile("javax.validation:validation-api:1.1.0.Final")
    compile("javax.validation:validation-api:1.1.0.Final:sources")
    compile("net.sourceforge.javacsv:javacsv:2.0")

    compile("org.springframework.boot:spring-boot-starter-security")
    compile("org.springframework.security:spring-security-ldap")
    compile("org.apache.directory.server:apacheds-server-jndi:1.5.5")
    compile("org.springframework:spring-web")
    compile("com.fasterxml.jackson.core:jackson-databind")

    compile("javax.servlet:javax.servlet-api:3.1.0")

    compile("com.google.gwt:gwt-user:2.5.1")
    compile("com.google.gwt:gwt-servlet:2.5.1")
    compile("com.google.gwt:gwt-dev:2.5.1")
    compile("com.google.gwt.inject:gin:1.5.0")

    compile("com.googlecode.mvp4g:mvp4g:1.4.0")
    compile("com.googlecode.mvp4g:mvp4g:1.4.0:sources")

    compile("com.sencha.gxt:gxt:3.0.1")
    compile("com.sencha.gxt:gxt:3.0.1:sources")


    compile("org.atmosphere:atmosphere-gwt-client:1.1.0.RC5")
    compile("org.atmosphere:atmosphere-gwt-server:1.1.0.RC5")
    compile("com.fasterxml.jackson.datatype:jackson-datatype-hibernate4:2.1.2")
    compile("org.bouncycastle:bcpg-jdk16:1.46")
    compile("org.jsoup:jsoup:1.7.2")
    compile("org.eclipse.jetty:jetty-continuation:9.3.5.v20151012")
    compile("org.springframework.boot:spring-boot-starter-aop")
    compile("com.googlecode.lambdaj:lambdaj:2.3.3")
    compile("org.apache.poi:poi:3.9")
    compile("org.apache.poi:poi-ooxml:3.9")
    compile("commons-fileupload:commons-fileupload:1.3.1")
    compile("org.springframework.security:spring-security-core:4.0.3.RELEASE")
    compile("com.google.guava:guava:18.0")
    compile("com.google.guava:guava-gwt:18.0")
    compile("org.springframework.integration:spring-integration-core:4.2.4.RELEASE")
    compile("org.samba.jcifs:jcifs:1.3.3")
    compile("org.springframework.integration:spring-integration-file:4.2.4.RELEASE")
    compile("org.springframework.integration:spring-integration-ftp:4.2.4.RELEASE")
    compile("org.springframework.integration:spring-integration-sftp:4.2.4.RELEASE")
    compile("org.springframework.integration:spring-integration-flow:1.0.0.RELEASE")
    compile("org.springframework.integration:spring-integration-java-dsl:1.1.0.M1")
    compile("org.atmosphere:wasync:2.1.2")

    compile libs.quartz
    compile libs.spring_jms
    compile libs.spring_jpa
    compile libs.jdbc_sybase

    runtime files("src/dist/conf")
    runtime files("src/dist/env/local")

    configurations {
        all*.exclude group: '', module: 'servlet-api'
    }
}

task createDirs << {
    sourceSets*.java.srcDirs*.each { it.mkdirs() }
    sourceSets*.resources.srcDirs*.each { it.mkdirs() }
    webAppDir.mkdirs()
}

task initProject << {
    File oldSource = file("./src")
    File tmpSource = file("./tmp")
    tmpSource.mkdirs()

    oldSource.listFiles().each { File f -> f.renameTo new File(tmpSource, f.name) }

    sourceSets*.java.srcDirs*.each { it.mkdirs() }
    sourceSets*.resources.srcDirs*.each { it.mkdirs() }
    webAppDir.mkdirs()

    File newSource = file(sourceSets.main.java.srcDirs.iterator().next())

    tmpSource.listFiles().each { File f -> f.renameTo new File(newSource, f.name) }

    tmpSource.delete()
}

task pathingJar(type: Jar) {
    dependsOn configurations.runtime
    appendix = 'pathing'

    doFirst {
        from "${project.buildDir}/classes"
        manifest {
            attributes "Class-Path": configurations.compile.files.join(" ")
        }
    }
}

task compileGwt(dependsOn: pathingJar, type: JavaExec) {

    //ext.buildDir = "${project.buildDir}/resources/main/static"
    ext.buildDir = "${project.rootDir}/src/main/webapp"
    //ext.buildDir = "${project.buildDir}"
    ext.extraDir = "${project.buildDir}/extra"
    ext.generatedDir = "${project.buildDir}/generated"

    inputs.source sourceSets.main.java.srcDirs
    inputs.dir sourceSets.main.output.resourcesDir
    outputs.dir buildDir

    // Workaround for incremental build (GRADLE-1483)
    outputs.upToDateSpec = new org.gradle.api.specs.AndSpec()

    doFirst {
        file(buildDir).mkdirs()
        //classpath.each { println it.name}
    }


    main = 'com.google.gwt.dev.Compiler'
    classpath {
        [
                pathingJar.archivePath,
                sourceSets.main.java.srcDirs,           // Java source
                sourceSets.main.output.resourcesDir,    // Generated resources
                sourceSets.main.output.classesDir,      // Generated classes
                //sourceSets.main.compileClasspath,       // Deps

        ]
    }

    args =
            [
                    'com.company.application.UI', // Your GWT module
                    '-war', buildDir,
                    '-logLevel', 'INFO',
                    '-localWorkers', '2',
                    '-compileReport',
                    '-extra', extraDir,
                    // '-draftCompile' // Speeds up compile with 25%
            ]
    maxHeapSize = '1024M'


}

war.dependsOn compileGwt
war {
    from compileGwt.buildDir
}

Answer 1

I fixed a similar issue with this gradle plugin : https://github.com/viswaramamoorthy/gradle-util-plugins

buildscript {
    dependencies {
        classpath "com.github.viswaramamoorthy:gradle-util-plugins:0.1.0-RELEASE"
    }
}
...
apply plugin: 'ManifestClasspath'