Port the build to Gradle

Closes gh-19609
Closes gh-19608

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-application-properties.adoc

@@ -2,7 +2,7 @@
 [appendix]
 [[common-application-properties]]
 = Common Application properties
-include::{asciidoc-sources-root}/attributes.adoc[]
+include::attributes.adoc[]
 
 Various properties can be specified inside your `application.properties` file, inside your `application.yml` file, or as command line switches.
 This appendix provides a list of common Spring Boot properties and references to the underlying classes that consume them.
@@ -15,64 +15,64 @@ Also, you can define your own properties.
 
 == Core properties
 
-include::{generated-resources-root}/config-docs/core.adoc[]
+include::config-docs/core.adoc[]
 
 == Cache properties
 
-include::{generated-resources-root}/config-docs/cache.adoc[]
+include::config-docs/cache.adoc[]
 
 == Mail properties
 
-include::{generated-resources-root}/config-docs/mail.adoc[]
+include::config-docs/mail.adoc[]
 
 == JSON properties
 
-include::{generated-resources-root}/config-docs/json.adoc[]
+include::config-docs/json.adoc[]
 
 == Data properties
 
-include::{generated-resources-root}/config-docs/data.adoc[]
+include::config-docs/data.adoc[]
 
 == Transaction properties
 
-include::{generated-resources-root}/config-docs/transaction.adoc[]
+include::config-docs/transaction.adoc[]
 
 == Data migration properties
 
-include::{generated-resources-root}/config-docs/data-migration.adoc[]
+include::config-docs/data-migration.adoc[]
 
 == Integration properties
 
-include::{generated-resources-root}/config-docs/integration.adoc[]
+include::config-docs/integration.adoc[]
 
 == Web properties
 
-include::{generated-resources-root}/config-docs/web.adoc[]
+include::config-docs/web.adoc[]
 
 == Templating properties
 
-include::{generated-resources-root}/config-docs/templating.adoc[]
+include::config-docs/templating.adoc[]
 
 == Server properties
 
-include::{generated-resources-root}/config-docs/server.adoc[]
+include::config-docs/server.adoc[]
 
 == Security properties
 
-include::{generated-resources-root}/config-docs/security.adoc[]
+include::config-docs/security.adoc[]
 
 == RSocket properties
 
-include::{generated-resources-root}/config-docs/rsocket.adoc[]
+include::config-docs/rsocket.adoc[]
 
 == Actuator properties
 
-include::{generated-resources-root}/config-docs/actuator.adoc[]
+include::config-docs/actuator.adoc[]
 
 == Devtools properties
 
-include::{generated-resources-root}/config-docs/devtools.adoc[]
+include::config-docs/devtools.adoc[]
 
 == Testing properties
 
-include::{generated-resources-root}/config-docs/testing.adoc[]
+include::config-docs/testing.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-auto-configuration-classes.adoc

@@ -1,7 +1,7 @@
 [appendix]
 [[auto-configuration-classes]]
 = Auto-configuration Classes
-include::{asciidoc-sources-root}/attributes.adoc[]
+include::attributes.adoc[]
 
 This appendix contains details of all of the auto-configuration classes provided by Spring Boot, with links to documentation and source code.
 Remember to also look at the conditions report in your application for more details of which features are switched on.
@@ -13,7 +13,7 @@ Remember to also look at the conditions report in your application for more deta
 == `spring-boot-autoconfigure`
 The following auto-configuration classes are from the `spring-boot-autoconfigure` module:
 
-include::{generated-resources-root}/auto-configuration-classes-spring-boot-autoconfigure.adoc[]
+include::auto-configuration-classes/spring-boot-autoconfigure.adoc[]
 
 
 
@@ -21,4 +21,4 @@ include::{generated-resources-root}/auto-configuration-classes-spring-boot-autoc
 == `spring-boot-actuator-autoconfigure`
 The following auto-configuration classes are from the `spring-boot-actuator-autoconfigure` module:
 
-include::{generated-resources-root}/auto-configuration-classes-spring-boot-actuator-autoconfigure.adoc[]
+include::auto-configuration-classes/spring-boot-actuator-autoconfigure.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-configuration-metadata.adoc

@@ -1,7 +1,7 @@
 [appendix]
 [[configuration-metadata]]
 = Configuration Metadata
-include::{asciidoc-sources-root}/attributes.adoc[]
+include::attributes.adoc[]
 
 Spring Boot jars include metadata files that provide details of all supported configuration properties.
 The files are designed to let IDE developers offer contextual help and "`code completion`" as users are working with `application.properties` or `application.yml` files.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-dependency-versions.adoc

@@ -1,7 +1,7 @@
 [appendix]
 [[dependency-versions]]
 = Dependency versions
-include::{asciidoc-sources-root}/attributes.adoc[]
+include::attributes.adoc[]
 
 This appendix provides details of the dependencies that are managed by Spring Boot.
 
@@ -11,4 +11,4 @@ This appendix provides details of the dependencies that are managed by Spring Bo
 The following table provides details of all of the dependency versions that are provided by Spring Boot in its CLI (Command Line Interface), Maven dependency management, and Gradle plugin.
 When you declare a dependency on one of these artifacts without declaring a version, the version listed in the table is used.
 
-include::{generated-resources-root}/effective-pom.adoc[]
+include::dependency-versions.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-executable-jar-format.adoc

@@ -1,7 +1,7 @@
 [appendix]
 [[executable-jar]]
 = The Executable Jar Format
-include::{asciidoc-sources-root}/attributes.adoc[]
+include::attributes.adoc[]
 
 The `spring-boot-loader` modules lets Spring Boot support executable jar and war files.
 If you use the Maven plugin or the Gradle plugin, executable jars are automatically generated, and you generally do not need to know the details of how they work.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/appendix-test-auto-configuration.adoc

@@ -1,7 +1,7 @@
 [appendix]
 [[test-auto-configuration]]
 = Test Auto-configuration Annotations
-include::{asciidoc-sources-root}/attributes.adoc[]
+include::attributes.adoc[]
 
 This appendix describes the `@…Test` auto-configuration annotations that Spring Boot provides to test slices of your application.
 
@@ -10,4 +10,4 @@ This appendix describes the `@…Test` auto-configuration annotations that Sprin
 
 The following table lists the various `@…Test` annotations that can be used to test slices of your application and the auto-configuration that they import by default:
 
-include::{generated-resources-root}/test-slice-auto-configuration.adoc[]
+include::test-slice-auto-configuration.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/attributes.adoc

@@ -20,8 +20,8 @@
 :github-issues: https://github.com/{github-repo}/issues/
 :github-wiki: https://github.com/{github-repo}/wiki
 
-:code-examples: {sources-root}/main/java/org/springframework/boot/docs
-:test-examples: {sources-root}/test/java/org/springframework/boot/docs
+:code-examples: ../main/java/org/springframework/boot/docs
+:test-examples: ../test/java/org/springframework/boot/docs
 
 :spring-boot-code: https://github.com/{github-repo}/tree/{github-tag}
 :spring-boot-api: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/api/

spring-boot-project/spring-boot-docs/src/docs/asciidoc/using-spring-boot.adoc

@@ -258,17 +258,17 @@ For example, a third-party starter project called `thirdpartyproject` would typi
 The following application starters are provided by Spring Boot under the `org.springframework.boot` group:
 
 .Spring Boot application starters
-include::{generated-resources-root}/application-starters.adoc[]
+include::starters/application-starters.adoc[]
 
 In addition to the application starters, the following starters can be used to add _<<production-ready-features.adoc#production-ready, production ready>>_ features:
 
 .Spring Boot production starters
-include::{generated-resources-root}/production-starters.adoc[]
+include::starters/production-starters.adoc[]
 
 Finally, Spring Boot also includes the following starters that can be used if you want to exclude or swap specific technical facets:
 
 .Spring Boot technical starters
-include::{generated-resources-root}/technical-starters.adoc[]
+include::starters/technical-starters.adoc[]
 
 TIP: For a list of additional community contributed starters, see the {spring-boot-master-code}/spring-boot-project/spring-boot-starters/README.adoc[README file] in the `spring-boot-starters` module on GitHub.