From 4c6b1704b3004c3d2694429f11351ce0aa91fb85 Mon Sep 17 00:00:00 2001
From: Tamas Cservenak <tamas@cservenak.net>
Date: Thu, 11 Dec 2025 17:42:36 +0100
Subject: [PATCH] Enforce API equality across 4.0 and 4.1

For now, in a profile that needs to be explicitly activated
as rc-5 and master digressed.

To invoke:
`mvn package -P maven4-api-check`
---
 api/pom.xml | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/api/pom.xml b/api/pom.xml
index b90c9f605c81..47e5b4e48101 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -47,9 +47,36 @@
 
   <properties>
     <project.directory>api</project.directory>
+    <maven4api.baseline>4.0.0-rc-5</maven4api.baseline>
   </properties>
 
   <profiles>
+    <profile>
+      <id>maven4-api-check</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>com.github.siom79.japicmp</groupId>
+            <artifactId>japicmp-maven-plugin</artifactId>
+            <configuration>
+              <oldVersion>
+                <dependency>
+                  <groupId>${project.groupId}</groupId>
+                  <artifactId>${project.artifactId}</artifactId>
+                  <type>${project.packaging}</type>
+                  <version>${maven4api.baseline}</version>
+                </dependency>
+              </oldVersion>
+              <parameter>
+                <packagingSupporteds>
+                  <packagingSupported>jar</packagingSupported>
+                </packagingSupporteds>
+              </parameter>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
     <profile>
       <id>reporting</id>
       <reporting>