gradle does not configure all dependencies - gradle

Question

I have a multi platform project, that also has to be build for andoid. So I have to use the gradle build system. I have three projects, two of them are Android library projects creating .aar-files and the 3rd is a project, that creates a the source code tree for a demo application using these .aar files.
The demo job packs a ZIP file with lots of source files and the two .aar files generated by both library projects. To do this, it must determine the name of the output files generated by the two library jobs. So I read the archivesBaseName attribute of the library projects. This works for one library project, but not for the 2nd. :-(
It seems to depend on the names I use for the project directories. When I look at the sorted directory listing, the demo project is in between the two other projects, and the project, where archivesBaseName is correct, is the one, which comes first, and the project, where archivesBaseName is unconfigured, is listed after the demo project.
So I tried to create a minimal working example using three project named a, b and c, where a nd c are andould library projects and b is the non-andoid projects supposed to pack the build products of a and c.
Here are my files:
settings.gradle:
rootProject.name = 'root'
include 'a'
include 'b'
include 'c'
build.gradle:
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.4.1'
}
}
plugins {
id "base"
}
allprojects {
repositories {
google()
jcenter()
}
}
a/build.gradle:
print "a/build.gradle start\n"
buildscript {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
}
}
apply plugin: 'com.android.library'
android {
compileSdkVersion 29
defaultConfig {
archivesBaseName = "archivesBaseName_a"
print "a: archivesBaseName=$archivesBaseName\n"
}
sourceSets {
main {
manifest.srcFile "AndroidManifest.xml"
}
}
}
print "a/build.gradle end\n"
b/build.gradle:
print "b/build.gradle start\n"
Project project_a=findProject(':a')
Project project_c=findProject(':c')
print "b: project_a: $project_a.archivesBaseName\n"
print "b: project_c: $project_c.archivesBaseName\n"
task build(type: Zip) {
group "Build"
description "build b"
}
evaluationDependsOn(':a')
evaluationDependsOn(':c')
dependencies {
// implementation project(":a") // gradle complains on missing implementation()
// implementation project(":c") // gradle complains on missing implementation()
}
print "b/build.gradle end\n"
c/build.gradle:
print "c/build.gradle start\n"
buildscript {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
}
}
apply plugin: 'com.android.library'
android {
compileSdkVersion 29
defaultConfig {
archivesBaseName = "archivesBaseName_c"
print "c: archivesBaseName=$archivesBaseName\n"
}
sourceSets {
main {
manifest.srcFile "AndroidManifest.xml"
}
}
}
print "c/build.gradle end\n"
When doing gradlew b:build, I get the following output:
$ ./gradlew b:build
> Configure project :a
a/build.gradle start
a: archivesBaseName=archivesBaseName_a
a/build.gradle end
> Configure project :c
c/build.gradle start
c: archivesBaseName=archivesBaseName_c
c/build.gradle end
> Configure project :b
b/build.gradle start
b: project_a: archivesBaseName_a
b: project_c: root
b/build.gradle end
BUILD SUCCESSFUL in 0s
$
I can see, that both library projects are configured and got archivesBaseName set, but when the final project is configured, only the 1st project hat the expected value in archivesBaseName.
I know, that b is dependend on a and c, but when I add the dependencies, I get an error from gradle about missing method implementation(). :-(
$ ./gradlew --version
------------------------------------------------------------
Gradle 5.1.1
------------------------------------------------------------
Build time: 2019-01-10 23:05:02 UTC
Revision: 3c9abb645fb83932c44e8610642393ad62116807
Kotlin DSL: 1.1.1
Kotlin: 1.3.11
Groovy: 2.5.4
Ant: Apache Ant(TM) version 1.9.13 compiled on July 10 2018
JVM: 11.0.15 (Eclipse Adoptium 11.0.15+10)
OS: Linux 5.15.16-gentoo amd64
Btw, work like expected, when I rename b to d.
Source code: http://www.klebsch.de/3aad37e292dd7cfe4ddb/gradle-problem.tar.gz