# Description: Initial Java bootstrap
# URL:         https://stygian.me/java-bootstrap/
# Maintainer:  John Vogel, jvogel4 at stny dot rr dot com
# Depends on:  libffi unzip zip

name=java-init
version=20180530
ant_vers=1.8.4
cp1_vers=0.93
cp2_vers=0.99
ecj_vers=3.2.2-200702121330
fastjar_vers=0.98
jamvm1_vers=1.5.1
jamvm2_vers=2.0.0
jikes_vers=1.22
release=1
source=(https://ftp.gnu.org/gnu/classpath/classpath-$cp1_vers.tar.gz
	https://ftp.gnu.org/gnu/classpath/classpath-$cp2_vers.tar.gz
	http://sourceforge.net/projects/jamvm/files/jamvm/JamVM%20$jamvm1_vers/jamvm-$jamvm1_vers.tar.gz
	http://sourceforge.net/projects/jamvm/files/jamvm/JamVM%20$jamvm2_vers/jamvm-$jamvm2_vers.tar.gz
	http://archive.apache.org/dist/ant/source/apache-ant-$ant_vers-src.tar.bz2
	http://archive.eclipse.org/eclipse/downloads/drops/R-$ecj_vers/ecjsrc.zip
	http://download.savannah.nongnu.org/releases/fastjar/fastjar-$fastjar_vers.tar.gz
	https://sourceforge.net/projects/jikes/files/Jikes/$jikes_vers/jikes-$jikes_vers.tar.bz2
	fastjar-jartool.c_rev1.62.patch
	fix-update-mode.diff
	build.xml)

unpack_source() {
	for file in ${source[@]}; do
		case ${file##*/} in
			apache-ant-$ant_vers-src.tar.bz2|\
			classpath-$cp1_vers.tar.gz|\
			classpath-$cp2_vers.tar.gz|\
			fastjar-$fastjar_vers.tar.gz|\
			jamvm-$jamvm1_vers.tar.gz|\
			jamvm-$jamvm2_vers.tar.gz|\
			jikes-$jikes_vers.tar.bz2)
				bsdtar -p -o -C $SRC -xf $(get_filename $file) ;;
			*)
				cp $(get_filename $file) $SRC ;;
		esac
	done
}

build() {
	find $SRC ! -type l -a \( -perm /go+w -o ! -perm /u+rw \) \
		-exec chmod go-w,u+w,a+r {} \;

	mkdir -p $SRC/$name/{bin,lib,share/java}

	cd $SRC/fastjar-$fastjar_vers
	patch -i $SRC/fastjar-jartool.c_rev1.62.patch
	patch -i $SRC/fix-update-mode.diff
	./configure --prefix=$SRC/$name
	make
	make install
	rm -r $SRC/$name/share/{info,man}

	# Shutting off fp-emulation stopped jikes from segfaulting.
	# We need the source15 to build new enough classpath and to build openjdk6 later.
	cd $SRC/jikes-$jikes_vers
	./configure \
		--prefix=$SRC/$name \
		--disable-fp-emulation \
		--enable-source15
	make
	make install
	rm -r $SRC/$name/{man,share/doc}

	OLD_PATH=$PATH
	export JAVA_HOME=$SRC/$name
	export PATH=$JAVA_HOME/bin:$PATH
	mkdir -p $SRC/tmp
	export HOME=$SRC/tmp

	cd $SRC/classpath-$cp1_vers

	./configure \
		--prefix=$SRC/$name \
		--disable-alsa \
		--disable-dssi \
		--disable-examples \
		--disable-gtk-peer \
		--disable-gconf-peer \
		--disable-plugin \
		--disable-Werror \
		--without-gjdoc
	make
	make install
	ln -s ../share/classpath/glibj.zip $SRC/$name/lib/rt.jar
	ln -s ../share/classpath/tools.zip $SRC/$name/lib/tools.jar
	rm -r $SRC/$name/info

	cd $SRC/jamvm-$jamvm1_vers

	./configure \
		--prefix=$SRC/$name \
		--enable-ffi \
		--with-classpath-install-dir=$SRC/$name
	make
	make install
	# jamvm install replaces the rt.jar link with one that's invalid.
	rm $SRC/$name/lib/rt.jar
	ln -s ../share/classpath/glibj.zip $SRC/$name/lib/rt.jar
	mv $SRC/$name/bin/jamvm{,.bin}
	# jamvm seems to have issues with running mutli-threaded, this set of options
	# seems to do a good job of preventing that.
	cat > $SRC/$name/bin/jamvm << EOF
#!/bin/sh
exec $SRC/$name/bin/jamvm.bin -Xmx1024m -Xnocompact -Xnoinlining -Djdt.compiler.useSingleThread=true "\$@"
EOF
	chmod 0755 $SRC/$name/bin/jamvm
	ln -s jamvm $SRC/$name/bin/java

	cd $SRC/apache-ant-$ant_vers

	sed -i -e 's|\(depends="jars\),test-jar\("\)|\1\2|' build.xml
	touch $HOME/.ant.properties
	JAVAC=jikes \
	JAVACMD=$JAVA_HOME/bin/jamvm \
	CLASSPATH=$JAVA_HOME/lib/rt.jar \
	ANT_OPTS="-Dbuild.compiler=jikes" \
	BOOTJAVAC_OPTS="-nowarn" \
	/bin/bash ./build.sh -Ddist.dir=out dist
	rm -r out/manual
	rm out/{INSTALL,KEYS,LICENSE,NOTICE,README,WHATSNEW,lib/README}
	cp -a out $SRC/$name/lib/ant
	ln -s ../lib/ant/bin/ant $JAVA_HOME/bin/ant
	install -d -m 0755 $PKG/opt/$name/{bin,lib}
	cp -a out $PKG/opt/$name/lib/ant
	ln -s ../lib/ant/bin/ant $PKG/opt/$name/bin/ant

	mkdir -p $SRC/ecj-$ecj_vers/src
	mv $SRC/ecjsrc.zip $SRC/ecj-$ecj_vers/src/ecj.zip
	cd $SRC/ecj-$ecj_vers
	mv $SRC/build.xml .
	ant --usejikes -f build.xml
	install -D ecj.jar $SRC/$name/share/java/ecj.jar
	install -D ecj.jar $PKG/opt/$name/share/java/ecj.jar

	cat > $SRC/$name/bin/ecj << EOF
#!/bin/sh
exec $SRC/$name/bin/jamvm -cp $SRC/$name/share/java/ecj.jar \\
	org.eclipse.jdt.internal.compiler.batch.Main "\$@"
EOF
	chmod 0755 $SRC/$name/bin/ecj
	cat > $PKG/opt/$name/bin/ecj << EOF
#!/bin/sh
exec /opt/$name/bin/jamvm -cp /opt/$name/share/java/ecj.jar \
	org.eclipse.jdt.internal.compiler.batch.Main "\$@"
EOF
	chmod 0755 $PKG/opt/$name/bin/ecj

	cd $SRC/classpath-$cp2_vers

	JAVAC=$JAVA_HOME/bin/ecj \
	JAVA=$JAVA_HOME/bin/jamvm \
	GCJ_JAVAC_TRUE=no \
	./configure \
		--prefix=/opt/$name \
		--disable-alsa \
		--disable-dssi \
		--disable-examples \
		--disable-gconf-peer \
		--disable-gjdoc \
		--disable-gtk-peer \
		--disable-plugin \
		--disable-Werror \
		--with-ecj-jar=/opt/$name/share/java/ecj.jar \
		ac_cv_prog_java_works=yes
	make
	make DESTDIR=$PKG install
	rm -f $PKG/opt/$name/lib/{rt,tools}.jar
	ln -s ../share/classpath/glibj.zip $PKG/opt/$name/lib/rt.jar
	ln -s ../share/classpath/tools.zip $PKG/opt/$name/lib/tools.jar
	
	rm -r $PKG/opt/$name/share/{info,man}

	# TODO: eventually try to fix this by patching the classpath buildfiles.
	for f in gappletviewer gjar gjarsigner gjavah gkeytool gnative2ascii \
		gorbd grmic grmid grmiregistry gserialver gtnameserv; do
		sed -i -e "s,^\(exec\) .* \(-classpath .*\)$,\1 /opt/$name/bin/jamvm \2," \
			$PKG/opt/$name/bin/$f
	done

	ln -s . $PKG/opt/$name/jre
	ln -s ecj $PKG/opt/$name/bin/javac
	ln -s gjar $PKG/opt/$name/bin/jar
	ln -s gjarsigner $PKG/opt/$name/bin/jarsigner
	ln -s gjavah $PKG/opt/$name/bin/javah
	ln -s gkeytool $PKG/opt/$name/bin/keytool
	ln -s gnative2ascii $PKG/opt/$name/bin/native2ascii
	ln -s gorbd $PKG/opt/$name/bin/orbd
	ln -s grmic $PKG/opt/$name/bin/rmic
	ln -s grmid $PKG/opt/$name/bin/rmid
	ln -s grmiregistry $PKG/opt/$name/bin/rmiregistry
	ln -s gserialver $PKG/opt/$name/bin/serialver
	ln -s gtnameserv $PKG/opt/$name/bin/tnameserv

	cd $SRC/jamvm-$jamvm2_vers
	./configure \
		--prefix=/opt/$name \
		--enable-ffi \
		--with-classpath-install-dir=/opt/$name
	make
	make DESTDIR=$PKG install
	# jamvm install replaces the rt.jar link with one that's invalid.
	rm $PKG/opt/$name/lib/rt.jar
	ln -s ../share/classpath/glibj.zip $PKG/opt/$name/lib/rt.jar
	mv $PKG/opt/$name/bin/jamvm{,.bin}
	# jamvm seems to have issues with running mutli-threaded, this set of options
	# seems to do a good job of preventing that.
	cat > $PKG/opt/$name/bin/jamvm << EOF
#!/bin/sh
exec /opt/$name/bin/jamvm.bin -Xmx1024m -Xnocompact -Xnoinlining -Djdt.compiler.useSingleThread=true "\$@"
EOF
	chmod 0755 $PKG/opt/$name/bin/jamvm
	ln -s jamvm $PKG/opt/$name/bin/java
	mv $PKG/opt/$name/lib/libjvm.so{,.0.0.0}
	ln -s libjvm.so.0.0.0 $PKG/opt/$name/lib/libjvm.so
	ln -s libjvm.so.0.0.0 $PKG/opt/$name/lib/libjvm.so.0
	find $PKG ! -type l -a \( -perm /go+w -o ! -perm /u+rw \) \
		-exec chmod go-w,u+rw {} \;
}