Add debug mode for native images

.github/workflows/ci.yml

@@ -25,4 +25,4 @@ jobs:
           distribution: 'graalvm'
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Compile project
-        run: mvn -B test -Pnative,portable --file pom.xml
+        run: mvn -Ddebug=true -B test -Pnative,portable --file pom.xml

README.md

@@ -80,4 +80,10 @@ This will produce the `sources`, `javadoc` and the library jar files. For a runn
 
 ```bash
 mvn package -P native,portable
+```
+
+For development, you can also enable debug mode to greatly cut compile times for the native image. (Using the native image for development is not necessary, but is made a lot easier with this option.)
+
+```bash
+mvn package -Ddebug=true -Pnative
 ```

pom.xml

@@ -139,6 +139,28 @@
 	</build>
 
 	<profiles>
+		<profile>
+			<id>release</id>
+			<activation>
+				<property>
+					<name>!debug</name>
+				</property>
+			</activation>
+			<properties>
+				<performance-options>-O3</performance-options>
+			</properties>
+		</profile>
+		<profile>
+			<id>debug</id>
+			<activation>
+				<property>
+					<name>debug</name>
+				</property>
+			</activation>
+			<properties>
+				<performance-options>-Ob</performance-options>
+			</properties>
+		</profile>
 		<profile>
 			<id>native</id>
 			<build>
@@ -170,7 +192,8 @@
 							<buildArgs>
 								<arg>--report-unsupported-elements-at-runtime</arg>
 								<arg>-H:+UnlockExperimentalVMOptions</arg>
-								<arg>-O3</arg>
+								<!--suppress UnresolvedMavenProperty -->
+								<arg>${performance-options}</arg>
 								<arg>--gc=G1</arg>
 								<arg>--strict-image-heap</arg>
 								<arg>--initialize-at-build-time=com.tibetiroka.deblint</arg>