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diff --git a/games-emulation/mednafen/mednafen-0.9.46.ebuild b/games-emulation/mednafen/mednafen-0.9.46.ebuild
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+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools flag-o-matic pax-utils
+
+DESCRIPTION="Argument-driven multi-system emulator utilizing OpenGL and SDL"
+HOMEPAGE="https://mednafen.github.io/"
+SRC_URI="https://mednafen.github.io/releases/files/${P}.tar.xz"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="alsa altivec cjk debugger jack nls pax_kernel"
+
+RDEPEND="
+	dev-libs/libcdio
+	>=dev-libs/lzo-2.10
+	media-libs/libsdl[sound,joystick,opengl,video]
+	media-libs/libsndfile
+	sys-libs/zlib[minizip]
+	virtual/opengl
+	alsa? ( media-libs/alsa-lib )
+	jack? ( media-sound/jack-audio-connection-kit )
+	nls? ( virtual/libintl )"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig
+	nls? ( sys-devel/gettext )"
+
+S=${WORKDIR}/${PN}
+
+pkg_pretend() {
+	if has ccache ${FEATURES}; then
+		ewarn
+		ewarn "If you experience build failure, try turning off ccache in FEATURES."
+		ewarn
+	fi
+}
+
+src_prepare() {
+	default
+
+	# Unfortunately, upstream is insane and thinks mucking with CFLAGS is okay, if
+	# it prevents "users who don't understand the consequences of what they're doing".
+	# We use sed's here, as they're more forward-compatible than patches which need to
+	# be constantly rebased. DO NOT REPLACE THEM UNLESS YOU HAVE PERMISSION FROM GAMES.
+	sed -e '/-fno-fast-math/d' \
+		-e '/-fno-unsafe-math-optimizations/d' \
+		-e '/-fno-aggressive-loop-optimizations/d' \
+		-e '/-fno-ipa-icf/d' \
+		-e '/-fno-printf-return-value/d' \
+		-e '/-fomit-frame-pointer/d' \
+		-e '/-fno-pic/d' \
+		-e '/-fno-pie/d' \
+		-e '/-fno-PIC/d' \
+		-e '/-fno-PIE/d' \
+		-e '/-nopie/d' \
+		-e '/-no-pie/d' \
+		-e '/-fno-stack-protector/d' \
+		-e '/-fno-stack-protector-all/d' \
+		-e '/-fno-stack-protector-strong/d' \
+		-e '/-mtune=haswell/d' \
+		-i configure.ac || die
+
+	# Furthermore, upstream is also insane about bundling libraries and considers it
+	# "an aesthetics issue" and is even unwilling to make unbundling optional.
+	# Libs to unbundle: minilzo, minizip
+	sed -e '/PKG_PROG_PKG_CONFIG/a PKG_CHECK_MODULES([LZO], [lzo2])' \
+		-i configure.ac || die
+	sed -e '/bin_PROGRAMS/a mednafen_CPPFLAGS = \$(LZO_CFLAGS)' \
+		-i src/Makefile.am || die
+	sed -e 's:"compress/minilzo.h":<lzo1x.h>:' \
+		-i src/{mednafen,qtrecord}.cpp || die
+	sed -e 's:compress/ioapi.c::' \
+		-e 's:compress/unzip.c::' \
+		-e 's:compress/minilzo.c::' \
+		-i src/compress/Makefile.am.inc || die
+	sed -e 's:"compress/unzip.h":<minizip/unzip.h>:' \
+		-i src/file.cpp || die
+	sed -e 's:\(mednafen_LDADD.*trio/libtrio\.a\):\1 -lminizip \$(LZO_LIBS):' \
+		-i src/Makefile.am || die
+	# delete bundled files just to be sure...
+	rm src/compress/{ioapi.?,*lzo*,unzip.?} || die
+
+	# The insanity continues... upstream now believes it needs to
+	# warn users when compiling with -fPIC/-fPIE enabled
+	sed -e '/Compiling with position-independent code generation enabled is not recommended, for performance reasons/d' \
+		-i src/types.h || die
+
+	eautoreconf
+}
+
+src_configure() {
+	# very dodgy code (bug #539992)
+	strip-flags
+	append-flags -fomit-frame-pointer -fwrapv
+
+	econf \
+		$(use_enable alsa) \
+		$(use_enable altivec) \
+		$(use_enable cjk cjk-fonts) \
+		$(use_enable debugger) \
+		$(use_enable jack) \
+		$(use_enable nls)
+}
+
+src_install() {
+	default
+	dodoc Documentation/cheats.txt
+
+	if use pax_kernel; then
+		pax-mark m "${ED%/}"/usr/bin/mednafen || die
+	fi
+}