Gradle Native - Dynamically add libs in repository - groovy

Question

I'm porting several Makefile projects in Gradle. I want every dependency to be versioned, so I created a common gradle file, namely general.gradle, that is included in each specific build.gradle file. For every project there is also a file dependencies.gradle, that contains a map {dependencyName, version}. Here an example:
ext.versions = [:]
versions.'libraryA'= "8a3f32"
versions.'libraryB'= "4af3e5"
I declare what libraryX refers to in general.gradle, inserting the libraries in the repositories, as follows:
repositories {
libs(PrebuiltLibraries) {
libraryA {
def libraryName = "${name}"
headers.srcDir "../${libraryName}"
binaries.withType(SharedLibraryBinary) {
sharedLibraryFile = file("${baseDir}/lib/${targetPlatform.name}/${buildType.name}/lib${libraryName}_" + versions."${libraryName}" + ".so")
}
}
libraryB {
def libraryName = "${name}"
headers.srcDir "../${libraryName}"
binaries.withType(SharedLibraryBinary) {
sharedLibraryFile = file("${baseDir}/lib/${targetPlatform.name}/${buildType.name}/lib${libraryName}_" + versions."${libraryName}" + ".so")
}
}
libraryC {....}
libraryD {....}
}
By this way, I can also set the right path depending on build type (debug or release) and platform (x86 or x86_64).
As you can see, inside every libraryX there is the very same code. I was wondering if I could avoid this unnecessary duplication, using a list
libraries = [ "libraryA", "libraryB", ...]
I tried doing:
repositories {
libs(PrebuiltLibraries) {
[ "libraryA", "libraryB", ...].each {
it {
def libraryName = "${name}"
headers.srcDir "../${libraryName}"
binaries.withType(SharedLibraryBinary) {
sharedLibraryFile = file("${baseDir}/lib/${targetPlatform.name}/${buildType.name}/lib${libraryName}_" + versions."${libraryName}" + ".so")
}
}
}
}
but I got this error:
Exception thrown while executing model rule: model.repositories > No signature of method: java.lang.String.call() is applicable for argument types: (general_dt1njom2wz075lo490p9e44em$_run_closure3_closure24_closure25_closure26_closure29) values:
[general_dt1njom2wz075lo490p9e44em$_run_closure3_closure24_closure25_closure26_closure29#2b2954e1]
Possible solutions: wait(), any(), wait(long), take(int), each(groovy.lang.Closure), any(groovy.lang.Closure)
Any idea?
Thanks,
Mauro

Answer 1

At this context it is a String variable:
[ "libraryA", "libraryB", ...].each {
it {
You cannot call it, it's not a method.
A method you want to call is delegated to closure, defined in third party context, but you can refer to it by using delegate:
[ "libraryA", "libraryB", ...].each {
delegate."$it" {
See also: http://docs.groovy-lang.org/latest/html/documentation/#_delegation_strategy