diff --git a/sci-electronics/kactus2/Manifest b/sci-electronics/kactus2/Manifest
new file mode 100644
index 0000000000..12bdbeb653
--- /dev/null
+++ b/sci-electronics/kactus2/Manifest
@@ -0,0 +1 @@
+DIST kactus2-3.8.0.tar.gz 19410435 BLAKE2B 2117a7ea5118c59f5b96a449348ba2425646038eb756c5423301d3deba15765005aafae3241c943b7adfaa728edeac3f0963b1cad7c23892b68bbd6ed7de78c0 SHA512 426021465f296c63ff70738b7a56547ac6e5b46ed06b165da2bbcd7239ff9e65c099721ebfb5e7f90b0afa9f5621d7825ff7e216bcc4786f0431f1e98d95eee8
diff --git a/sci-electronics/kactus2/files/kactus2-3.8.0-install.patch b/sci-electronics/kactus2/files/kactus2-3.8.0-install.patch
new file mode 100644
index 0000000000..0cce3b501c
--- /dev/null
+++ b/sci-electronics/kactus2/files/kactus2-3.8.0-install.patch
@@ -0,0 +1,30 @@
+--- a/.qmake.conf
++++ b/.qmake.conf
+@@ -2,9 +2,14 @@
+ LOCAL_INSTALL_DIR=""
+ 
+ isEmpty(LOCAL_INSTALL_DIR) {
++    # Get the bitness of the system.
++    UNAME = $$system(uname -m)
++
+     # Select paths for binaries in accordance with convention.
+     bin_path = /usr/bin
+-    lib_path = /usr/lib
++    # Lib path depend on the bitness of the system.
++    equals(UNAME, x86_64): lib_path = /usr/lib64
++    !equals(UNAME, x86_64): lib_path = /usr/lib
+     plugin_path = /usr/share/kactus2/plugins
+ 
+     # Files and destination path for possible settings file upgrades.
+@@ -23,9 +28,8 @@ isEmpty(LOCAL_INSTALL_DIR) {
+     unix:config.path = /etc/xdg/TUT
+ 
+     # Copying stuff, exact locations seem to depend on the bitness of the system.
+-    UNAME = $$system(uname -m)
+-    equals(UNAME, x86_64): unix:config.extra = cp ./Administrative/releaseFiles/DefaultSettingsLinux.ini /etc/xdg/TUT/Kactus2.ini; (test -d /usr/lib64 && ln -f -s /usr/bin/kactus2 /usr/lib64/libKactus2.so) || (test -d /lib/x86_64-linux-gnu && ln -f -s /usr/bin/kactus2 /lib/x86_64-linux-gnu/libKactus2.so)
+-    !equals(UNAME, x86_64): unix:config.extra = cp ./Administrative/releaseFiles/DefaultSettingsLinux.ini /etc/xdg/TUT/Kactus2.ini; ln -f -s /usr/bin/kactus2 /usr/lib/libKactus2.so
++    equals(UNAME, x86_64): unix:config.extra = mkdir -p $(INSTALL_ROOT)/etc/xdg/TUT; cp ./Administrative/releaseFiles/DefaultSettingsLinux.ini $(INSTALL_ROOT)/etc/xdg/TUT/Kactus2.ini; (test -d $(INSTALL_ROOT)/usr/lib64 && ln -f -s $(INSTALL_ROOT)/usr/bin/kactus2 $(INSTALL_ROOT)/usr/lib64/libKactus2.so) || (test -d $(INSTALL_ROOT)/lib/x86_64-linux-gnu && ln -f -s $(INSTALL_ROOT)/usr/bin/kactus2 $(INSTALL_ROOT)/lib/x86_64-linux-gnu/libKactus2.so)
++    !equals(UNAME, x86_64): unix:config.extra = mkdir -p $(INSTALL_ROOT)/etc/xdg/TUT; cp ./Administrative/releaseFiles/DefaultSettingsLinux.ini $(INSTALL_ROOT)/etc/xdg/TUT/Kactus2.ini; ln -f -s $(INSTALL_ROOT)/usr/bin/kactus2 $(INSTALL_ROOT)/usr/lib/libKactus2.so
+ 
+     # Files and destination path for the IP-XACT files coming with an installation.
+     unix:library.path = /usr/share/kactus2/library
diff --git a/sci-electronics/kactus2/kactus2-3.8.0.ebuild b/sci-electronics/kactus2/kactus2-3.8.0.ebuild
new file mode 100644
index 0000000000..206e1429da
--- /dev/null
+++ b/sci-electronics/kactus2/kactus2-3.8.0.ebuild
@@ -0,0 +1,59 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit xdg-utils
+
+DESCRIPTION="A open source IP-XACT-based tool"
+HOMEPAGE="
+	http://funbase.cs.tut.fi
+	https://github.com/kactus2/kactus2dev
+"
+
+if [[ ${PV} == "9999" ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/${PN}/${PN}dev.git"
+else
+	SRC_URI="https://github.com/${PN}/${PN}dev/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86"
+	S="${WORKDIR}/${PN}dev-${PV}"
+fi
+
+LICENSE="GPL-2"
+SLOT="0"
+
+DEPEND="
+	dev-qt/qtcore:5
+	dev-qt/qtgui:5
+	dev-qt/qthelp:5
+	dev-qt/qtprintsupport:5
+	dev-qt/qtsvg:5
+	dev-qt/qtwidgets:5
+	dev-qt/qtxml:5
+"
+
+RDEPEND="
+	${DEPEND}
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.8.0-install.patch # Fix install problem
+)
+
+src_install() {
+	# Can't use default, set INSTALL_ROOT and workaround parallel install bug
+	emake -j1 INSTALL_ROOT="${D}" install
+}
+
+pkg_postinst() {
+	xdg_desktop_database_update
+	xdg_icon_cache_update
+	xdg_mimeinfo_database_update
+}
+
+pkg_postrm() {
+	xdg_desktop_database_update
+	xdg_icon_cache_update
+	xdg_mimeinfo_database_update
+}
diff --git a/sci-electronics/kactus2/metadata.xml b/sci-electronics/kactus2/metadata.xml
new file mode 100644
index 0000000000..bd0f833632
--- /dev/null
+++ b/sci-electronics/kactus2/metadata.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>vowstar@gmail.com</email>
+		<name>Huang Rui</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>proxy-maint@gentoo.org</email>
+		<name>Proxy Maintainers</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">kactus2/kactus2dev</remote-id>
+	</upstream>
+	<longdescription>
+	Kactus2 is a toolset for designing embedded products, especially FPGA-based
+	MP-SoCs. The aim is easier IP reusability and integration for both hardware
+	and software. The tool is based on IEEE 1685-2014 "IP-XACT" standard.
+	</longdescription>
+</pkgmetadata>