Defining custom classpath for a jar manifest in gradle - jar

Question

I'm trying to define a jar task for all sub projects (about 30). I tried the following task:
jar {
destinationDir = file('../../../../_temp/core/modules')
archiveName = baseName + '.' + extension
metaInf {
from 'ejbModule/META-INF/' exclude 'MANIFEST.MF'
}
def manifestClasspath = configurations.runtime.collect { it.getName() }.join(',')
manifest {
attributes("Manifest-Version" : "1.0",
"Created-By" : vendor,
"Specification-Title" : appName,
"Specification-Version" : version,
"Specification-Vendor" : vendor,
"Implementation-Title" : appName,
"Implementation-Version" : version,
"Implementation-Vendor" : vendor,
"Main-Class" : "com.dcx.epep.Start",
"Class-Path" : manifestClasspath
)
}
}
My problem is, that the dependencies between the sub projects are not included in the manifest's classpath. I tried changing the runtime configuration to a compile configuration but that results in the following error.
What went wrong: A problem occurred evaluating project ':EskoordClient'.
You can't change a configuration which is not in unresolved state!
That is my complete build file for project EskoordClient:
dependencies {
compile project(':ePEPClient')
}
Most of my sub projects build files only define the projects dependencies. 3rd party lib dependencies are defined in the build file of the super project.
Is there a possibility to include all needed classpath entries (3rd party libraries and other projects) to a manifest classpath in a superproject for all subprojects.

Answer 1

This is how I got it to work. Get Project dependencies only using the call:
getAllDependencies().withType(ProjectDependency)
then adding the contents of each project's libsDir to my Class-Path manifest entry.
jar {
manifest {
attributes 'Main-Class': 'com.my.package.Main'
def manifestCp = configurations.runtime.files.collect {
File file = it
"lib/${file.name}"
}.join(' ')
configurations.runtime.getAllDependencies().withType(ProjectDependency).each {dep->
def depProj = dep.getDependencyProject()
def libFilePaths = project(depProj.path).libsDir.list().collect{ inFile-> "lib/${inFile}" }.join(' ')
logger.info"Adding libs from project ${depProj.name}: [- ${libFilePaths} -]"
manifestCp += ' '+libFilePaths
}
logger.lifecycle("")
logger.lifecycle("---Manifest-Class-Path: ${manifestCp}")
attributes 'Class-Path': manifestCp
}
}