LWJGL GNU Makefile

# User configuration
MAVEN=mvn
PACKAGE_COMMAND=$(MAVEN) package
OUTPUT_DIR=./dist

# Derived params
XMLNS=http://maven.apache.org/POM/4.0.0
ARTIFACT_ID=$(shell xml sel -N my=$(XMLNS) -t -m my:project -v my:artifactId pom.xml)
VERSION=$(shell xml sel -N my=$(XMLNS) -t -m my:project -v my:version pom.xml)
DEPJAR=target/$(ARTIFACT_ID)-$(VERSION)-jar-with-dependencies.jar

linux: prepare
    $(PACKAGE_COMMAND) -P lwjgl-natives-linux
    cp -f $(DEPJAR) $(OUTPUT_DIR)/$(ARTIFACT_ID)-$(VERSION)-linux.jar

windows: prepare
    $(PACKAGE_COMMAND) -P lwjgl-natives-windows
    cp -f $(DEPJAR) $(OUTPUT_DIR)/$(ARTIFACT_ID)-$(VERSION)-windows.jar

macos: prepare
    $(PACKAGE_COMMAND) -P lwjgl-natives-macos
    cp -f $(DEPJAR) $(OUTPUT_DIR)/$(ARTIFACT_ID)-$(VERSION)-macos.jar

clean:
    $(shell rm -r ./target)
    $(shell rm -r $(OUTPUT_DIR))

all: clean linux windows macos

.PHONY: clean prepare

prepare:
    # Fails if XMLstarlet isn't installed
    xml --help
    rm $(DEPJAR) || :
    mkdir -p $(OUTPUT_DIR) || :