dev-java/openj9-openjdk: add 9999, various fixes

7 files changed, 805 insertions, 109 deletions

diff --git a/dev-java/openj9-openjdk/files/openj9-j9utf8-fam.patch b/dev-java/openj9-openjdk/files/openj9-j9utf8-fam.patch
deleted file mode 100644
index f45a539..0000000
--- a/dev-java/openj9-openjdk/files/openj9-j9utf8-fam.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-diff --git a/runtime/cfdumper/romdump.c b/runtime/cfdumper/romdump.c
-index 5040c2c25..1cfcd36c7 100644
---- a/runtime/cfdumper/romdump.c
-+++ b/runtime/cfdumper/romdump.c
-@@ -154,7 +154,7 @@ addRegion(J9Pool *regionPool, UDATA offset, UDATA length, UDATA type, const char
- static UDATA
- getUTF8Length(J9UTF8 *utf8)
- {
--	UDATA length = sizeof(J9UTF8) + J9UTF8_LENGTH(utf8) - sizeof(J9UTF8_DATA(utf8));
-+	UDATA length = sizeof(J9UTF8) + J9UTF8_LENGTH(utf8);
- 	if (length & 1) {
- 		length++;
- 	}
-diff --git a/runtime/oti/j9nonbuilder.h b/runtime/oti/j9nonbuilder.h
-index c5705188d..e9babe227 100644
---- a/runtime/oti/j9nonbuilder.h
-+++ b/runtime/oti/j9nonbuilder.h
-@@ -3219,7 +3219,7 @@ typedef struct J9ClassLoader {
- 
- typedef struct J9UTF8 {
- 	U_16 length;
--	U_8 data[2];
-+	U_8 data[];
- } J9UTF8;
- 
- typedef struct J9ROMClass {
diff --git a/dev-java/openj9-openjdk/files/openj9-openjdk-14.env.sh b/dev-java/openj9-openjdk/files/openj9-openjdk-14.env.sh
deleted file mode 100644
index 5aac9c7..0000000
--- a/dev-java/openj9-openjdk/files/openj9-openjdk-14.env.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 1999-2018 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-VERSION="OpenJDK ${SLOT} with OpenJ9 ${OPENJ9_PV}"
-JAVA_HOME="${EPREFIX}/usr/$(get_libdir)/${PN}-${SLOT}"
-JDK_HOME="${EPREFIX}/usr/$(get_libdir)/${PN}-${SLOT}"
-JAVAC="\${JAVA_HOME}/bin/javac"
-PATH="\${JAVA_HOME}/bin"
-ROOTPATH="\${JAVA_HOME}/bin"
-LDPATH="\${JAVA_HOME}/lib/:\${JAVA_HOME}/lib/server/"
-MANPATH=""
-PROVIDES_TYPE="JDK JRE"
-PROVIDES_VERSION="${SLOT}"
-BOOTCLASSPATH=""
-GENERATION="2"
-ENV_VARS="JAVA_HOME JDK_HOME JAVAC PATH ROOTPATH LDPATH MANPATH"
diff --git a/dev-java/openj9-openjdk/files/openj9-openjdk-11.env.sh b/dev-java/openj9-openjdk/files/openj9-openjdk.env.sh
index 5aac9c7..5aac9c7 100644
--- a/dev-java/openj9-openjdk/files/openj9-openjdk-11.env.sh
+++ b/dev-java/openj9-openjdk/files/openj9-openjdk.env.sh
diff --git a/dev-java/openj9-openjdk/openj9-openjdk-11.0.21.0.ebuild b/dev-java/openj9-openjdk/openj9-openjdk-11.0.21.0.ebuild
index 15f7bf2..56dd85d 100644
--- a/dev-java/openj9-openjdk/openj9-openjdk-11.0.21.0.ebuild
+++ b/dev-java/openj9-openjdk/openj9-openjdk-11.0.21.0.ebuild
@@ -12,11 +12,18 @@ FREEMARKER_PV=2.3.30
 
 DESCRIPTION="Open source implementation of the Java programming language"
 HOMEPAGE="https://openjdk.java.net"
-SRC_URI="
-	https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}/archive/${OPENJ9_P}.tar.gz -> openj9-openjdk-jdk${SLOT}-${OPENJ9_P}.tar.gz
-	https://github.com/eclipse/openj9/archive/${OPENJ9_P}.tar.gz -> ${OPENJ9_P}.tar.gz
-	https://github.com/eclipse/openj9-omr/archive/${OPENJ9_P}.tar.gz -> openj9-omr-${OPENJ9_PV}.tar.gz
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}.git"
+	OPENJ9_EGIT_REPO_URI="https://github.com/eclipse/openj9.git"
+	OPENJ9_OMR_EGIT_REPO_URI="https://github.com/eclipse/openj9-omr.git"
+else
+	SRC_URI="
+		https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}/archive/${OPENJ9_P}.tar.gz -> openj9-openjdk-jdk${SLOT}-${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9/archive/${OPENJ9_P}.tar.gz -> ${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9-omr/archive/${OPENJ9_P}.tar.gz -> openj9-omr-${OPENJ9_PV}.tar.gz
 	"
+fi
 
 LICENSE="GPL-2"
 KEYWORDS="~amd64"
@@ -72,10 +79,7 @@ DEPEND="
 	javafx? ( dev-java/openjfx:${SLOT}= )
 	|| (
 		virtual/jdk:${SLOT}
-		dev-java/openj9-openjdk-bin:${SLOT}
-		dev-java/openj9-openjdk:${SLOT}
-		dev-java/openjdk-bin:${SLOT}
-		dev-java/openjdk:${SLOT}
+		virtual/jdk:$((SLOT-1))
 	)
 	|| (
 		dev-java/freemarker-bin
@@ -90,7 +94,11 @@ PDEPEND="
 
 REQUIRED_USE="javafx? ( alsa !headless-awt )"
 
-S="${WORKDIR}/openj9-openjdk-jdk${SLOT}-${OPENJ9_P}"
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}"
+else
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}-${OPENJ9_P}"
+fi
 
 # The space required to build varies wildly depending on USE flags,
 # ranging from 3GB to 16GB. This function is certainly not exact but
@@ -136,42 +144,58 @@ pkg_setup() {
 		fi
 	done
 
-	if [[ ${MERGE_TYPE} != binary ]] && [[ -z ${JDK_HOME} ]]; then
-		if has_version --host-root dev-java/openj9-openjdk:${SLOT}; then
-			JDK_HOME=${EPREFIX}/usr/$(get_libdir)/openj9-openjdk-${SLOT}
-		elif has_version --host-root dev-java/openj9-openjdk-bin:${SLOT}; then
-			JDK_HOME=$(best_version --host-root dev-java/openj9-openjdk-bin:${SLOT})
-			JDK_HOME=${JDK_HOME#*/}
-			JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
-		elif has_version --host-root dev-java/openjdk:${SLOT}; then
-			JDK_HOME=${EPREFIX}/usr/$(get_libdir)/openjdk-${SLOT}
-		elif has_version --host-root dev-java/openjdk-bin:${SLOT}; then
-			JDK_HOME=$(best_version --host-root dev-java/openjdk-bin:${SLOT})
-			JDK_HOME=${JDK_HOME#*/}
-			JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
-		else
-			die "Build VM not found!"
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		if [[ -z ${JDK_HOME} ]]; then
+			for slot in ${SLOT} $((SLOT-1)); do
+				for variant in openj9- ''; do
+					if has_version --host-root dev-java/${variant}openjdk:${slot}; then
+						JDK_HOME=${EPREFIX}/usr/$(get_libdir)/${variant}openjdk-${slot}
+						break
+					elif has_version --host-root dev-java/${variant}openjdk-bin:${slot}; then
+						JDK_HOME=$(best_version --host-root dev-java/${variant}openjdk-bin:${slot})
+						JDK_HOME=${JDK_HOME#*/}
+						JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
+						break
+					fi
+				done
+			done
 		fi
+		[[ -n ${JDK_HOME} ]] || die "Build VM not found!"
 		export JDK_HOME
 	fi
 }
 
+src_unpack() {
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		EGIT_CHECKOUT_DIR=${S} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9 EGIT_REPO_URI=${OPENJ9_EGIT_REPO_URI} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9-omr EGIT_REPO_URI=${OPENJ9_OMR_EGIT_REPO_URI} git-r3_src_unpack
+	else
+		default
+	fi
+}
+
 src_prepare() {
-	ln -s ../openj9-${OPENJ9_P} openj9 || die
-	ln -s ../openj9-omr-${OPENJ9_P} omr || die
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		ln -s ../openj9 openj9 || die
+		ln -s ../openj9-omr omr || die
+	else
+		ln -s ../openj9-${OPENJ9_P} openj9 || die
+		ln -s ../openj9-omr-${OPENJ9_P} omr || die
+	fi
 
 	default
 
 	eapply -d openj9 -- "${FILESDIR}/openj9-make-jvmti-test-variables-static.patch"
-	# broken verifier
-	#eapply -d openj9 -- "${FILESDIR}/openj9-j9utf8-fam.patch"
 	eapply -d omr -- "${FILESDIR}/omr-omrstr-iconv-failure-overflow.patch"
 	eapply -d omr -- "${FILESDIR}/omr-fam.patch"
 
-	sed -i -e '/^OPENJ9_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
-	       -e '/^OPENJ9_TAG :=/s/:=.*/:= '${OPENJ9_P}/ \
-	       -e '/^OPENJ9OMR_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
-	       closed/OpenJ9.gmk
+	if [[ ${OPENJ9_PV} != 9999 ]]; then
+		sed -i -e '/^OPENJ9_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9_TAG :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9OMR_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   closed/OpenJ9.gmk
+	fi
 
 	chmod +x configure || die
 }
@@ -180,7 +204,8 @@ src_configure() {
 	# Work around stack alignment issue, bug #647954. in case we ever have x86
 	use x86 && append-flags -mincoming-stack-boundary=2
 
-	# Work around -fno-common ( GCC10 default ), bug #713180
+	# https://bugs.openjdk.java.net/browse/JDK-8249792
+	# backported to 11.0.9
 	append-flags -fcommon
 
 	if has_version dev-java/freemarker; then
@@ -252,7 +277,6 @@ src_compile() {
 		JOBS=$(makeopts_jobs)
 		# https://github.com/ibmruntimes/openj9-openjdk-jdk14/issues/72
 		#LOG=debug
-		CFLAGS_WARNINGS_ARE_ERRORS= # No -Werror
 		$(usex doc docs '')
 		$(usex jbootstrap bootcycle-images product-images)
 	)
@@ -294,7 +318,7 @@ src_install() {
 	# must be done before running itself
 	java-vm_set-pax-markings "${ddest}"
 
-	use gentoo-vm && java-vm_install-env "${FILESDIR}"/${PN}-${SLOT}.env.sh
+	use gentoo-vm && java-vm_install-env "${FILESDIR}"/${PN}.env.sh
 	java-vm_revdep-mask
 	java-vm_sandbox-predict /dev/random /proc/self/coredump_filter
 
diff --git a/dev-java/openj9-openjdk/openj9-openjdk-14.0.21.0.ebuild b/dev-java/openj9-openjdk/openj9-openjdk-14.0.21.0.ebuild
index 3514ca7..4450730 100644
--- a/dev-java/openj9-openjdk/openj9-openjdk-14.0.21.0.ebuild
+++ b/dev-java/openj9-openjdk/openj9-openjdk-14.0.21.0.ebuild
@@ -12,11 +12,18 @@ FREEMARKER_PV=2.3.30
 
 DESCRIPTION="Open source implementation of the Java programming language"
 HOMEPAGE="https://openjdk.java.net"
-SRC_URI="
-	https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}/archive/${OPENJ9_P}.tar.gz -> openj9-openjdk-jdk${SLOT}-${OPENJ9_P}.tar.gz
-	https://github.com/eclipse/openj9/archive/${OPENJ9_P}.tar.gz -> ${OPENJ9_P}.tar.gz
-	https://github.com/eclipse/openj9-omr/archive/${OPENJ9_P}.tar.gz -> openj9-omr-${OPENJ9_PV}.tar.gz
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}.git"
+	OPENJ9_EGIT_REPO_URI="https://github.com/eclipse/openj9.git"
+	OPENJ9_OMR_EGIT_REPO_URI="https://github.com/eclipse/openj9-omr.git"
+else
+	SRC_URI="
+		https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}/archive/${OPENJ9_P}.tar.gz -> openj9-openjdk-jdk${SLOT}-${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9/archive/${OPENJ9_P}.tar.gz -> ${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9-omr/archive/${OPENJ9_P}.tar.gz -> openj9-omr-${OPENJ9_PV}.tar.gz
 	"
+fi
 
 LICENSE="GPL-2"
 KEYWORDS="~amd64"
@@ -70,7 +77,10 @@ DEPEND="
 	x11-libs/libXt
 	x11-libs/libXtst
 	javafx? ( dev-java/openjfx:${SLOT}= )
-	virtual/jdk:${SLOT}
+	|| (
+		virtual/jdk:${SLOT}
+		virtual/jdk:$((SLOT-1))
+	)
 	|| (
 		dev-java/freemarker-bin
 		dev-java/freemarker
@@ -84,7 +94,11 @@ PDEPEND="
 
 REQUIRED_USE="javafx? ( alsa !headless-awt )"
 
-S="${WORKDIR}/openj9-openjdk-jdk${SLOT}-${OPENJ9_P}"
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}"
+else
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}-${OPENJ9_P}"
+fi
 
 # The space required to build varies wildly depending on USE flags,
 # ranging from 3GB to 16GB. This function is certainly not exact but
@@ -130,42 +144,58 @@ pkg_setup() {
 		fi
 	done
 
-	if [[ ${MERGE_TYPE} != binary ]] && [[ -z ${JDK_HOME} ]]; then
-		if has_version --host-root dev-java/openj9-openjdk:${SLOT}; then
-			JDK_HOME=${EPREFIX}/usr/$(get_libdir)/openj9-openjdk-${SLOT}
-		elif has_version --host-root dev-java/openj9-openjdk-bin:${SLOT}; then
-			JDK_HOME=$(best_version --host-root dev-java/openj9-openjdk-bin:${SLOT})
-			JDK_HOME=${JDK_HOME#*/}
-			JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
-		elif has_version --host-root dev-java/openjdk:${SLOT}; then
-			JDK_HOME=${EPREFIX}/usr/$(get_libdir)/openjdk-${SLOT}
-		elif has_version --host-root dev-java/openjdk-bin:${SLOT}; then
-			JDK_HOME=$(best_version --host-root dev-java/openjdk-bin:${SLOT})
-			JDK_HOME=${JDK_HOME#*/}
-			JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
-		else
-			die "Build VM not found!"
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		if [[ -z ${JDK_HOME} ]]; then
+			for slot in ${SLOT} $((SLOT-1)); do
+				for variant in openj9- ''; do
+					if has_version --host-root dev-java/${variant}openjdk:${slot}; then
+						JDK_HOME=${EPREFIX}/usr/$(get_libdir)/${variant}openjdk-${slot}
+						break
+					elif has_version --host-root dev-java/${variant}openjdk-bin:${slot}; then
+						JDK_HOME=$(best_version --host-root dev-java/${variant}openjdk-bin:${slot})
+						JDK_HOME=${JDK_HOME#*/}
+						JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
+						break
+					fi
+				done
+			done
 		fi
+		[[ -n ${JDK_HOME} ]] || die "Build VM not found!"
 		export JDK_HOME
 	fi
 }
 
+src_unpack() {
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		EGIT_CHECKOUT_DIR=${S} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9 EGIT_REPO_URI=${OPENJ9_EGIT_REPO_URI} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9-omr EGIT_REPO_URI=${OPENJ9_OMR_EGIT_REPO_URI} git-r3_src_unpack
+	else
+		default
+	fi
+}
+
 src_prepare() {
-	ln -s ../openj9-${OPENJ9_P} openj9 || die
-	ln -s ../openj9-omr-${OPENJ9_P} omr || die
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		ln -s ../openj9 openj9 || die
+		ln -s ../openj9-omr omr || die
+	else
+		ln -s ../openj9-${OPENJ9_P} openj9 || die
+		ln -s ../openj9-omr-${OPENJ9_P} omr || die
+	fi
 
 	default
 
 	eapply -d openj9 -- "${FILESDIR}/openj9-make-jvmti-test-variables-static.patch"
-	# broken verifier
-	#eapply -d openj9 -- "${FILESDIR}/openj9-j9utf8-fam.patch"
 	eapply -d omr -- "${FILESDIR}/omr-omrstr-iconv-failure-overflow.patch"
 	eapply -d omr -- "${FILESDIR}/omr-fam.patch"
 
-	sed -i -e '/^OPENJ9_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
-	       -e '/^OPENJ9_TAG :=/s/:=.*/:= '${OPENJ9_P}/ \
-	       -e '/^OPENJ9OMR_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
-	       closed/OpenJ9.gmk
+	if [[ ${OPENJ9_PV} != 9999 ]]; then
+		sed -i -e '/^OPENJ9_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9_TAG :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9OMR_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   closed/OpenJ9.gmk
+	fi
 
 	chmod +x configure || die
 }
@@ -174,7 +204,8 @@ src_configure() {
 	# Work around stack alignment issue, bug #647954. in case we ever have x86
 	use x86 && append-flags -mincoming-stack-boundary=2
 
-	# Work around -fno-common ( GCC10 default ), bug #713180
+	# https://bugs.openjdk.java.net/browse/JDK-8249792
+	# not backported to 14?
 	append-flags -fcommon
 
 	if has_version dev-java/freemarker; then
@@ -246,7 +277,6 @@ src_compile() {
 		JOBS=$(makeopts_jobs)
 		# https://github.com/ibmruntimes/openj9-openjdk-jdk14/issues/72
 		#LOG=debug
-		CFLAGS_WARNINGS_ARE_ERRORS= # No -Werror
 		$(usex doc docs '')
 		$(usex jbootstrap bootcycle-images product-images)
 	)
@@ -288,7 +318,7 @@ src_install() {
 	# must be done before running itself
 	java-vm_set-pax-markings "${ddest}"
 
-	use gentoo-vm && java-vm_install-env "${FILESDIR}"/${PN}-${SLOT}.env.sh
+	use gentoo-vm && java-vm_install-env "${FILESDIR}"/${PN}.env.sh
 	java-vm_revdep-mask
 	java-vm_sandbox-predict /dev/random /proc/self/coredump_filter
 
diff --git a/dev-java/openj9-openjdk/openj9-openjdk-14.9999.ebuild b/dev-java/openj9-openjdk/openj9-openjdk-14.9999.ebuild
new file mode 100644
index 0000000..81fb828
--- /dev/null
+++ b/dev-java/openj9-openjdk/openj9-openjdk-14.9999.ebuild
@@ -0,0 +1,343 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools check-reqs flag-o-matic java-pkg-2 java-vm-2 multiprocessing pax-utils toolchain-funcs
+
+SLOT="$(get_major_version)"
+OPENJ9_PV="$(get_version_component_range 2-4)"
+OPENJ9_P=openj9-${OPENJ9_PV}
+FREEMARKER_PV=2.3.30
+
+DESCRIPTION="Open source implementation of the Java programming language"
+HOMEPAGE="https://openjdk.java.net"
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}.git"
+	OPENJ9_EGIT_REPO_URI="https://github.com/eclipse/openj9.git"
+	OPENJ9_OMR_EGIT_REPO_URI="https://github.com/eclipse/openj9-omr.git"
+else
+	SRC_URI="
+		https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}/archive/${OPENJ9_P}.tar.gz -> openj9-openjdk-jdk${SLOT}-${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9/archive/${OPENJ9_P}.tar.gz -> ${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9-omr/archive/${OPENJ9_P}.tar.gz -> openj9-omr-${OPENJ9_PV}.tar.gz
+	"
+fi
+
+LICENSE="GPL-2"
+KEYWORDS=""
+
+IUSE="alsa cups ddr debug doc examples gentoo-vm headless-awt javafx +jbootstrap large-heap nsplugin +pch selinux source systemtap webstart"
+
+COMMON_DEPEND="
+	media-libs/freetype:2=
+	media-libs/giflib:0/7
+	media-libs/libpng:0=
+	media-libs/lcms:2=
+	sys-libs/zlib
+	virtual/jpeg:0=
+	systemtap? ( dev-util/systemtap )
+
+	dev-libs/elfutils
+	dev-libs/libdwarf
+	sys-process/numactl
+"
+
+# Many libs are required to build, but not to run, make is possible to remove
+# by listing conditionally in RDEPEND unconditionally in DEPEND
+RDEPEND="
+	${COMMON_DEPEND}
+	>=sys-apps/baselayout-java-0.1.0-r1
+	!headless-awt? (
+		x11-libs/libX11
+		x11-libs/libXext
+		x11-libs/libXi
+		x11-libs/libXrandr
+		x11-libs/libXrender
+		x11-libs/libXt
+		x11-libs/libXtst
+	)
+	alsa? ( media-libs/alsa-lib )
+	cups? ( net-print/cups )
+	selinux? ( sec-policy/selinux-java )
+"
+
+DEPEND="
+	${COMMON_DEPEND}
+	app-arch/zip
+	media-libs/alsa-lib
+	net-print/cups
+	x11-base/xorg-proto
+	x11-libs/libX11
+	x11-libs/libXext
+	x11-libs/libXi
+	x11-libs/libXrandr
+	x11-libs/libXrender
+	x11-libs/libXt
+	x11-libs/libXtst
+	javafx? ( dev-java/openjfx:${SLOT}= )
+	|| (
+		virtual/jdk:${SLOT}
+		virtual/jdk:$((SLOT-1))
+	)
+	|| (
+		dev-java/freemarker-bin
+		dev-java/freemarker
+	)
+"
+
+PDEPEND="
+	webstart? ( >=dev-java/icedtea-web-1.6.1:0 )
+	nsplugin? ( >=dev-java/icedtea-web-1.6.1:0[nsplugin] )
+"
+
+REQUIRED_USE="javafx? ( alsa !headless-awt )"
+
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}"
+else
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}-${OPENJ9_P}"
+fi
+
+# The space required to build varies wildly depending on USE flags,
+# ranging from 3GB to 16GB. This function is certainly not exact but
+# should be close enough to be useful.
+openjdk_check_requirements() {
+	local M
+	M=3192
+	M=$(( $(usex jbootstrap 2 1) * $M ))
+	M=$(( $(usex debug 3 1) * $M ))
+	M=$(( $(usex doc 320 0) + $(usex source 128 0) + 192 + $M ))
+
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+pkg_pretend() {
+	openjdk_check_requirements
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		has ccache ${FEATURES} && die "FEATURES=ccache doesn't work with ${PN}"
+	fi
+}
+
+pkg_setup() {
+	openjdk_check_requirements
+	java-vm-2_pkg_setup
+
+	JAVA_PKG_WANT_BUILD_VM="openjdk-${SLOT} openjdk-bin-${SLOT}"
+	JAVA_PKG_WANT_SOURCE="${SLOT}"
+	JAVA_PKG_WANT_TARGET="${SLOT}"
+
+	# The nastiness below is necessary while the gentoo-vm USE flag is
+	# masked. First we call java-pkg-2_pkg_setup if it looks like the
+	# flag was unmasked against one of the possible build VMs. If not,
+	# we try finding one of them in their expected locations. This would
+	# have been slightly less messy if openjdk-bin had been installed to
+	# /opt/${PN}-${SLOT} or if there was a mechanism to install a VM env
+	# file but disable it so that it would not normally be selectable.
+
+	local vm
+	for vm in ${JAVA_PKG_WANT_BUILD_VM}; do
+		if [[ -d ${EPREFIX}/usr/lib/jvm/${vm} ]]; then
+			java-pkg-2_pkg_setup
+			return
+		fi
+	done
+
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		if [[ -z ${JDK_HOME} ]]; then
+			for slot in ${SLOT} $((SLOT-1)); do
+				for variant in openj9- ''; do
+					if has_version --host-root dev-java/${variant}openjdk:${slot}; then
+						JDK_HOME=${EPREFIX}/usr/$(get_libdir)/${variant}openjdk-${slot}
+						break
+					elif has_version --host-root dev-java/${variant}openjdk-bin:${slot}; then
+						JDK_HOME=$(best_version --host-root dev-java/${variant}openjdk-bin:${slot})
+						JDK_HOME=${JDK_HOME#*/}
+						JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
+						break
+					fi
+				done
+			done
+		fi
+		[[ -n ${JDK_HOME} ]] || die "Build VM not found!"
+		export JDK_HOME
+	fi
+}
+
+src_unpack() {
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		EGIT_CHECKOUT_DIR=${S} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9 EGIT_REPO_URI=${OPENJ9_EGIT_REPO_URI} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9-omr EGIT_REPO_URI=${OPENJ9_OMR_EGIT_REPO_URI} git-r3_src_unpack
+	else
+		default
+	fi
+}
+
+src_prepare() {
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		ln -s ../openj9 openj9 || die
+		ln -s ../openj9-omr omr || die
+	else
+		ln -s ../openj9-${OPENJ9_P} openj9 || die
+		ln -s ../openj9-omr-${OPENJ9_P} omr || die
+	fi
+
+	default
+
+	#einfo "Applying openj9-utf.patch"
+	#git -C openj9 apply -3 "${FILESDIR}/openj9-utf.patch" || die
+	eapply -d omr -- "${FILESDIR}/omr-omrstr-iconv-failure-overflow.patch"
+	eapply -d omr -- "${FILESDIR}/omr-fam.patch"
+
+	if [[ ${OPENJ9_PV} != 9999 ]]; then
+		sed -i -e '/^OPENJ9_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9_TAG :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9OMR_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   closed/OpenJ9.gmk
+	fi
+
+	chmod +x configure || die
+}
+
+src_configure() {
+	# Work around stack alignment issue, bug #647954. in case we ever have x86
+	use x86 && append-flags -mincoming-stack-boundary=2
+
+	if has_version dev-java/freemarker; then
+		local freemarker=freemarker
+	else
+		local freemarker=freemarker-bin
+	fi
+
+	# Enabling full docs appears to break doc building. If not
+	# explicitly disabled, the flag will get auto-enabled if pandoc and
+	# graphviz are detected. pandoc has loads of dependencies anyway.
+
+	local myconf=(
+		--disable-ccache
+		--enable-full-docs=no
+		--with-boot-jdk="${JDK_HOME}"
+		--with-extra-cflags="${CFLAGS}"
+		--with-extra-cxxflags="${CXXFLAGS}"
+		--with-extra-ldflags="${LDFLAGS}"
+		--with-stdc++lib=dynamic
+		--with-giflib=system
+		--with-lcms=system
+		--with-libjpeg=system
+		--with-libpng=system
+		--with-native-debug-symbols=$(usex debug internal none)
+		--with-vendor-name="Gentoo"
+		--with-vendor-url="https://gentoo.org"
+		--with-vendor-bug-url="https://bugs.gentoo.org"
+		--with-vendor-vm-bug-url="https://bugs.openjdk.java.net"
+		--with-vendor-version-string="${PVR}"
+		--with-version-pre=""
+		--with-version-opt=""
+		--with-zlib=system
+		--enable-dtrace=$(usex systemtap yes no)
+		--enable-headless-only=$(usex headless-awt yes no)
+
+		--with-freemarker-jar=$(java-pkg_getjar --build-only $freemarker freemarker.jar)
+		--disable-warnings-as-errors{,-omr,-openj9}
+		$(use_enable ddr)
+		$(use_with large-heap noncompressedrefs)
+	)
+
+	if use javafx; then
+		local zip="${EROOT%/}/usr/$(get_libdir)/openjfx-${SLOT}/javafx-exports.zip"
+		if [[ -r ${zip} ]]; then
+			myconf+=( --with-import-modules="${zip}" )
+		else
+			die "${zip} not found or not readable"
+		fi
+	fi
+
+	# PaX breaks pch, bug #601016
+	if use pch && ! host-is-pax; then
+		myconf+=( --enable-precompiled-headers )
+	else
+		myconf+=( --disable-precompiled-headers )
+	fi
+
+	(
+		unset _JAVA_OPTIONS JAVA JAVA_TOOL_OPTIONS JAVAC XARGS
+		CFLAGS= CXXFLAGS= LDFLAGS= \
+		CONFIG_SITE=/dev/null \
+		econf "${myconf[@]}"
+	)
+}
+
+src_compile() {
+	local myemakeargs=(
+		JOBS=$(makeopts_jobs)
+		# https://github.com/ibmruntimes/openj9-openjdk-jdk14/issues/72
+		#LOG=debug
+		$(usex doc docs '')
+		$(usex jbootstrap bootcycle-images product-images)
+	)
+	emake "${myemakeargs[@]}" -j1 #nowarn
+}
+
+src_install() {
+	local dest="/usr/$(get_libdir)/${PN}-${SLOT}"
+	local ddest="${ED}${dest#/}"
+
+	cd "${S}"/build/*-release/images/jdk || die
+
+	# Create files used as storage for system preferences.
+	mkdir .systemPrefs || die
+	touch .systemPrefs/.system.lock || die
+	touch .systemPrefs/.systemRootModFile || die
+
+	# Oracle and IcedTea have libjsoundalsa.so depending on
+	# libasound.so.2 but OpenJDK only has libjsound.so. Weird.
+	if ! use alsa ; then
+		rm -v lib/libjsound.* || die
+	fi
+
+	if ! use examples ; then
+		rm -vr demo/ || die
+	fi
+
+	if ! use source ; then
+		rm -v lib/src.zip || die
+	fi
+
+	rm -v lib/security/cacerts || die
+
+	dodir "${dest}"
+	cp -pPR * "${ddest}" || die
+
+	dosym ../../../../../etc/ssl/certs/java/cacerts "${dest}"/lib/security/cacerts
+
+	# must be done before running itself
+	java-vm_set-pax-markings "${ddest}"
+
+	use gentoo-vm && java-vm_install-env "${FILESDIR}"/${PN}.env.sh
+	java-vm_revdep-mask
+	java-vm_sandbox-predict /dev/random /proc/self/coredump_filter
+
+	if use doc ; then
+		docinto html
+		dodoc -r "${S}"/build/*-release/images/docs/*
+		dosym ../../../usr/share/doc/"${PF}" /usr/share/doc/"${PN}-${SLOT}"
+	fi
+}
+
+pkg_postinst() {
+	java-vm-2_pkg_postinst
+
+	if use gentoo-vm ; then
+		ewarn "WARNING! You have enabled the gentoo-vm USE flag, making this JDK"
+		ewarn "recognised by the system. This will almost certainly break"
+		ewarn "many java ebuilds as they are not ready for openjdk-11"
+	else
+		ewarn "The experimental gentoo-vm USE flag has not been enabled so this JDK"
+		ewarn "will not be recognised by the system. For example, simply calling"
+		ewarn "\"java\" will launch a different JVM. This is necessary until Gentoo"
+		ewarn "fully supports Java ${SLOT}. This JDK must therefore be invoked using its"
+		ewarn "absolute location under ${EPREFIX}/usr/$(get_libdir)/${PN}-${SLOT}."
+	fi
+}
diff --git a/dev-java/openj9-openjdk/openj9-openjdk-15.9999.ebuild b/dev-java/openj9-openjdk/openj9-openjdk-15.9999.ebuild
new file mode 100644
index 0000000..29ceae6
--- /dev/null
+++ b/dev-java/openj9-openjdk/openj9-openjdk-15.9999.ebuild
@@ -0,0 +1,341 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools check-reqs flag-o-matic java-pkg-2 java-vm-2 multiprocessing pax-utils toolchain-funcs
+
+SLOT="$(get_major_version)"
+OPENJ9_PV="$(get_version_component_range 2-4)"
+OPENJ9_P=openj9-${OPENJ9_PV}
+FREEMARKER_PV=2.3.30
+
+DESCRIPTION="Open source implementation of the Java programming language"
+HOMEPAGE="https://openjdk.java.net"
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}.git"
+	OPENJ9_EGIT_REPO_URI="https://github.com/eclipse/openj9.git"
+	OPENJ9_OMR_EGIT_REPO_URI="https://github.com/eclipse/openj9-omr.git"
+else
+	SRC_URI="
+		https://github.com/ibmruntimes/openj9-openjdk-jdk${SLOT}/archive/${OPENJ9_P}.tar.gz -> openj9-openjdk-jdk${SLOT}-${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9/archive/${OPENJ9_P}.tar.gz -> ${OPENJ9_P}.tar.gz
+		https://github.com/eclipse/openj9-omr/archive/${OPENJ9_P}.tar.gz -> openj9-omr-${OPENJ9_PV}.tar.gz
+	"
+fi
+
+LICENSE="GPL-2"
+KEYWORDS=""
+
+IUSE="alsa cups ddr debug doc examples gentoo-vm headless-awt javafx +jbootstrap large-heap nsplugin +pch selinux source systemtap webstart"
+
+COMMON_DEPEND="
+	media-libs/freetype:2=
+	media-libs/giflib:0/7
+	media-libs/libpng:0=
+	media-libs/lcms:2=
+	sys-libs/zlib
+	virtual/jpeg:0=
+	systemtap? ( dev-util/systemtap )
+
+	dev-libs/elfutils
+	dev-libs/libdwarf
+	sys-process/numactl
+"
+
+# Many libs are required to build, but not to run, make is possible to remove
+# by listing conditionally in RDEPEND unconditionally in DEPEND
+RDEPEND="
+	${COMMON_DEPEND}
+	>=sys-apps/baselayout-java-0.1.0-r1
+	!headless-awt? (
+		x11-libs/libX11
+		x11-libs/libXext
+		x11-libs/libXi
+		x11-libs/libXrandr
+		x11-libs/libXrender
+		x11-libs/libXt
+		x11-libs/libXtst
+	)
+	alsa? ( media-libs/alsa-lib )
+	cups? ( net-print/cups )
+	selinux? ( sec-policy/selinux-java )
+"
+
+DEPEND="
+	${COMMON_DEPEND}
+	app-arch/zip
+	media-libs/alsa-lib
+	net-print/cups
+	x11-base/xorg-proto
+	x11-libs/libX11
+	x11-libs/libXext
+	x11-libs/libXi
+	x11-libs/libXrandr
+	x11-libs/libXrender
+	x11-libs/libXt
+	x11-libs/libXtst
+	javafx? ( dev-java/openjfx:${SLOT}= )
+	|| (
+		virtual/jdk:${SLOT}
+		virtual/jdk:$((SLOT-1))
+	)
+	|| (
+		dev-java/freemarker-bin
+		dev-java/freemarker
+	)
+"
+
+PDEPEND="
+	webstart? ( >=dev-java/icedtea-web-1.6.1:0 )
+	nsplugin? ( >=dev-java/icedtea-web-1.6.1:0[nsplugin] )
+"
+
+REQUIRED_USE="javafx? ( alsa !headless-awt )"
+
+if [[ ${OPENJ9_PV} == 9999 ]]; then
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}"
+else
+	S="${WORKDIR}/openj9-openjdk-jdk${SLOT}-${OPENJ9_P}"
+fi
+
+# The space required to build varies wildly depending on USE flags,
+# ranging from 3GB to 16GB. This function is certainly not exact but
+# should be close enough to be useful.
+openjdk_check_requirements() {
+	local M
+	M=3192
+	M=$(( $(usex jbootstrap 2 1) * $M ))
+	M=$(( $(usex debug 3 1) * $M ))
+	M=$(( $(usex doc 320 0) + $(usex source 128 0) + 192 + $M ))
+
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+pkg_pretend() {
+	openjdk_check_requirements
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		has ccache ${FEATURES} && die "FEATURES=ccache doesn't work with ${PN}"
+	fi
+}
+
+pkg_setup() {
+	openjdk_check_requirements
+	java-vm-2_pkg_setup
+
+	JAVA_PKG_WANT_BUILD_VM="openjdk-${SLOT} openjdk-bin-${SLOT}"
+	JAVA_PKG_WANT_SOURCE="${SLOT}"
+	JAVA_PKG_WANT_TARGET="${SLOT}"
+
+	# The nastiness below is necessary while the gentoo-vm USE flag is
+	# masked. First we call java-pkg-2_pkg_setup if it looks like the
+	# flag was unmasked against one of the possible build VMs. If not,
+	# we try finding one of them in their expected locations. This would
+	# have been slightly less messy if openjdk-bin had been installed to
+	# /opt/${PN}-${SLOT} or if there was a mechanism to install a VM env
+	# file but disable it so that it would not normally be selectable.
+
+	local vm
+	for vm in ${JAVA_PKG_WANT_BUILD_VM}; do
+		if [[ -d ${EPREFIX}/usr/lib/jvm/${vm} ]]; then
+			java-pkg-2_pkg_setup
+			return
+		fi
+	done
+
+	if [[ ${MERGE_TYPE} != binary ]]; then
+		if [[ -z ${JDK_HOME} ]]; then
+			for slot in ${SLOT} $((SLOT-1)); do
+				for variant in openj9- ''; do
+					if has_version --host-root dev-java/${variant}openjdk:${slot}; then
+						JDK_HOME=${EPREFIX}/usr/$(get_libdir)/${variant}openjdk-${slot}
+						break
+					elif has_version --host-root dev-java/${variant}openjdk-bin:${slot}; then
+						JDK_HOME=$(best_version --host-root dev-java/${variant}openjdk-bin:${slot})
+						JDK_HOME=${JDK_HOME#*/}
+						JDK_HOME=${EPREFIX}/opt/${JDK_HOME%-r*}
+						break
+					fi
+				done
+			done
+		fi
+		[[ -n ${JDK_HOME} ]] || die "Build VM not found!"
+		export JDK_HOME
+	fi
+}
+
+src_unpack() {
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		EGIT_CHECKOUT_DIR=${S} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9 EGIT_REPO_URI=${OPENJ9_EGIT_REPO_URI} git-r3_src_unpack
+		EGIT_CHECKOUT_DIR=openj9-omr EGIT_REPO_URI=${OPENJ9_OMR_EGIT_REPO_URI} git-r3_src_unpack
+	else
+		default
+	fi
+}
+
+src_prepare() {
+	if [[ ${OPENJ9_PV} == 9999 ]]; then
+		ln -s ../openj9 openj9 || die
+		ln -s ../openj9-omr omr || die
+	else
+		ln -s ../openj9-${OPENJ9_P} openj9 || die
+		ln -s ../openj9-omr-${OPENJ9_P} omr || die
+	fi
+
+	default
+
+	eapply -d omr -- "${FILESDIR}/omr-omrstr-iconv-failure-overflow.patch"
+	eapply -d omr -- "${FILESDIR}/omr-fam.patch"
+
+	if [[ ${OPENJ9_PV} != 9999 ]]; then
+		sed -i -e '/^OPENJ9_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9_TAG :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   -e '/^OPENJ9OMR_SHA :=/s/:=.*/:= '${OPENJ9_P}/ \
+			   closed/OpenJ9.gmk
+	fi
+
+	chmod +x configure || die
+}
+
+src_configure() {
+	# Work around stack alignment issue, bug #647954. in case we ever have x86
+	use x86 && append-flags -mincoming-stack-boundary=2
+
+	if has_version dev-java/freemarker; then
+		local freemarker=freemarker
+	else
+		local freemarker=freemarker-bin
+	fi
+
+	# Enabling full docs appears to break doc building. If not
+	# explicitly disabled, the flag will get auto-enabled if pandoc and
+	# graphviz are detected. pandoc has loads of dependencies anyway.
+
+	local myconf=(
+		--disable-ccache
+		--enable-full-docs=no
+		--with-boot-jdk="${JDK_HOME}"
+		--with-extra-cflags="${CFLAGS}"
+		--with-extra-cxxflags="${CXXFLAGS}"
+		--with-extra-ldflags="${LDFLAGS}"
+		--with-stdc++lib=dynamic
+		--with-giflib=system
+		--with-lcms=system
+		--with-libjpeg=system
+		--with-libpng=system
+		--with-native-debug-symbols=$(usex debug internal none)
+		--with-vendor-name="Gentoo"
+		--with-vendor-url="https://gentoo.org"
+		--with-vendor-bug-url="https://bugs.gentoo.org"
+		--with-vendor-vm-bug-url="https://bugs.openjdk.java.net"
+		--with-vendor-version-string="${PVR}"
+		--with-version-pre=""
+		--with-version-opt=""
+		--with-zlib=system
+		--enable-dtrace=$(usex systemtap yes no)
+		--enable-headless-only=$(usex headless-awt yes no)
+
+		--with-freemarker-jar=$(java-pkg_getjar --build-only $freemarker freemarker.jar)
+		#--disable-warnings-as-errors{,-omr,-openj9}
+		$(use_enable ddr)
+		$(use_with large-heap noncompressedrefs)
+	)
+
+	if use javafx; then
+		local zip="${EROOT%/}/usr/$(get_libdir)/openjfx-${SLOT}/javafx-exports.zip"
+		if [[ -r ${zip} ]]; then
+			myconf+=( --with-import-modules="${zip}" )
+		else
+			die "${zip} not found or not readable"
+		fi
+	fi
+
+	# PaX breaks pch, bug #601016
+	if use pch && ! host-is-pax; then
+		myconf+=( --enable-precompiled-headers )
+	else
+		myconf+=( --disable-precompiled-headers )
+	fi
+
+	(
+		unset _JAVA_OPTIONS JAVA JAVA_TOOL_OPTIONS JAVAC XARGS
+		CFLAGS= CXXFLAGS= LDFLAGS= \
+		CONFIG_SITE=/dev/null \
+		econf "${myconf[@]}"
+	)
+}
+
+src_compile() {
+	local myemakeargs=(
+		JOBS=$(makeopts_jobs)
+		# https://github.com/ibmruntimes/openj9-openjdk-jdk14/issues/72
+		#LOG=debug
+		$(usex doc docs '')
+		$(usex jbootstrap bootcycle-images product-images)
+	)
+	emake "${myemakeargs[@]}" -j1 #nowarn
+}
+
+src_install() {
+	local dest="/usr/$(get_libdir)/${PN}-${SLOT}"
+	local ddest="${ED}${dest#/}"
+
+	cd "${S}"/build/*-release/images/jdk || die
+
+	# Create files used as storage for system preferences.
+	mkdir .systemPrefs || die
+	touch .systemPrefs/.system.lock || die
+	touch .systemPrefs/.systemRootModFile || die
+
+	# Oracle and IcedTea have libjsoundalsa.so depending on
+	# libasound.so.2 but OpenJDK only has libjsound.so. Weird.
+	if ! use alsa ; then
+		rm -v lib/libjsound.* || die
+	fi
+
+	if ! use examples ; then
+		rm -vr demo/ || die
+	fi
+
+	if ! use source ; then
+		rm -v lib/src.zip || die
+	fi
+
+	rm -v lib/security/cacerts || die
+
+	dodir "${dest}"
+	cp -pPR * "${ddest}" || die
+
+	dosym ../../../../../etc/ssl/certs/java/cacerts "${dest}"/lib/security/cacerts
+
+	# must be done before running itself
+	java-vm_set-pax-markings "${ddest}"
+
+	use gentoo-vm && java-vm_install-env "${FILESDIR}"/${PN}.env.sh
+	java-vm_revdep-mask
+	java-vm_sandbox-predict /dev/random /proc/self/coredump_filter
+
+	if use doc ; then
+		docinto html
+		dodoc -r "${S}"/build/*-release/images/docs/*
+		dosym ../../../usr/share/doc/"${PF}" /usr/share/doc/"${PN}-${SLOT}"
+	fi
+}
+
+pkg_postinst() {
+	java-vm-2_pkg_postinst
+
+	if use gentoo-vm ; then
+		ewarn "WARNING! You have enabled the gentoo-vm USE flag, making this JDK"
+		ewarn "recognised by the system. This will almost certainly break"
+		ewarn "many java ebuilds as they are not ready for openjdk-11"
+	else
+		ewarn "The experimental gentoo-vm USE flag has not been enabled so this JDK"
+		ewarn "will not be recognised by the system. For example, simply calling"
+		ewarn "\"java\" will launch a different JVM. This is necessary until Gentoo"
+		ewarn "fully supports Java ${SLOT}. This JDK must therefore be invoked using its"
+		ewarn "absolute location under ${EPREFIX}/usr/$(get_libdir)/${PN}-${SLOT}."
+	fi
+}