# Makefile for Java part of JavaGDBM
# Katherine Don, 2005

#JAVAC = $(JAVA_HOME)/bin/javac
#JAVAH = $(JAVA_HOME)/bin/javah
#JAR = $(JAVA_HOME)/bin/jar
JAVAC = @JAVAC@
# 'javah' existed until JDK 1.7, transitional in JDK 1.8, then removed by JDK 1.9 (use 'javac -h' instead)
# Makefile rules below test for 'javah' and use it if it found, otherwise runs with 'javac -h' version
#
# Since we're committed to JAVA_HOME being set, so jni.h header files can be found,
# then we can lean on JAVA_HOME here to more precisely check for the existence of javah
# within JAVA_HOME, and not accidentally pick up on another (older) JDK that is also
# installed on the system, and does come with a 'javah' but is unlikely to be able
# to cope with newer (e.g. JDK 11) version class files
JAVAH = $(JAVA_HOME)/javah
JAR = jar

JAVACFLAGS = @JAVACFLAGS@

JAVAGDBMHOME=../
JAVACLASSDIR=./classes
JAVASRCDIR=.
JAVACOPTIONS= -deprecation -g -O
JAVACLASSPATH=$(JAVACLASSDIR):

all: setup compile

setup:
	mkdir -p $(JAVACLASSDIR)

compile: setup
	$(JAVAC) $(JAVACFLAGS) -d $(JAVACLASSDIR) -sourcepath $(JAVASRCDIR) $(JAVACOPTIONS) au/com/pharos/*/*.java
#	$(JAVAC) -h $(JAVAGDBMHOME)/jni -classpath $(JAVACLASSPATH) -d java au/com/pharos/gdbm/GdbmFile.java
	@echo Checking for javah ...
#	$(eval found = $(shell which javah 2>/dev/null | wc -l))
	$(eval found = $(shell command -v $(JAVAH) | wc -l))
	@if test "$(found)" = "1" ; then \
	  echo "... found" ; \
	  echo $(JAVAH) -o $(JAVAGDBMHOME)/jni/GdbmFile.h -classpath $(JAVACLASSPATH) au.com.pharos.gdbm.GdbmFile ; \
	  $(JAVAH) -o $(JAVAGDBMHOME)/jni/GdbmFile.h -classpath $(JAVACLASSPATH) au.com.pharos.gdbm.GdbmFile ; \
	else \
	  echo "... not found => using 'javac -h'" ; \
	  echo $(JAVAC) -h $(JAVAGDBMHOME)/jni -classpath $(JAVACLASSPATH) -d java au/com/pharos/gdbm/GdbmFile.java ; \
	  $(JAVAC) -h $(JAVAGDBMHOME)/jni -classpath $(JAVACLASSPATH) -d java au/com/pharos/gdbm/GdbmFile.java ; \
	fi
	jar cf $(JAVAGDBMHOME)/javagdbm.jar -C $(JAVACLASSDIR) au

clean:
	rm -rf $(JAVACLASSDIR) $(JAVAGDBMHOME)/javagdbm.jar $(JAVAGDBMHOME)/jni/GdbmFile.h 

install:

distclean: clean
	rm -f Makefile