Reduce native binary size

[lppedd]

Issue description

Hi everyone!
Taking the Micronaut Picocli example code and compiling it to native - on Windows - outputs a binary file of 50 MB.
Are there tricks to make it smaller?
For example, comparing to a Quarkus CLI alternative, it's 20 MB bigger.

Now, on a more realistic example, let's take these Gradle dependencies:

dependencies {
  annotationProcessor("org.projectlombok:lombok:1.18.24")
  annotationProcessor("info.picocli:picocli-codegen")

  // Added afterwards
  implementation("one.util:streamex:0.8.1")
  implementation("com.github.javaparser:javaparser-core:3.24.4")
  implementation("org.eclipse.jgit:org.eclipse.jgit:6.3.0.202209071007-r")
  implementation("me.tongfei:progressbar:0.9.4")

  // Already there at project initialization
  implementation("info.picocli:picocli")
  implementation("io.micronaut.picocli:micronaut-picocli")
  implementation("jakarta.annotation:jakarta.annotation-api")

  compileOnly("org.projectlombok:lombok:1.18.24")
  runtimeOnly("ch.qos.logback:logback-classic")

  testImplementation("org.mockito:mockito-core")
  testImplementation("io.micronaut:micronaut-http-client")
}

configurations.implementation {
  exclude group: "io.micronaut", module: "micronaut-http"
  exclude group: "io.micronaut", module: "micronaut-http-client"
  exclude group: "io.micronaut", module: "micronaut-jackson-databind"
}

The above will output a 44 MB executable.

[sdelamo]

I generated a native executable for MacOS Apple Silicon Mac with Micronaut Framework 4 and the following build (probably the smallest build config possible):

plugins {
    id("com.github.johnrengelman.shadow") version "8.1.1"
    id("io.micronaut.application") version "4.0.2"
}

version = "0.1"
group = "nativetest"

repositories {
    mavenCentral()
}

dependencies {
    annotationProcessor("info.picocli:picocli-codegen")
    implementation("io.micronaut.picocli:micronaut-picocli")
    runtimeOnly("ch.qos.logback:logback-classic")
}


application {
    mainClass.set("nativetest.NativetestCommand")
}
java {
    sourceCompatibility = JavaVersion.toVersion("17")
    targetCompatibility = JavaVersion.toVersion("17")
}

micronaut {
    testRuntime("junit5")
    processing {
        incremental(true)
        annotations("nativetest.*")
    }
}

du -h build/native/nativeCompile/nativetest
 45M	build/native/nativeCompile/nativetest

@micronaut-projects/core-developers is there anything we can do to reduce the binary size? Micronaut Picocli depends on Micronaut Inject.