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# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7
inherit autotools flag-o-matic toolchain-funcs multilib-minimal

MY_P="SDL2-${PV}"
DESCRIPTION="Simple Direct Media Layer"
HOMEPAGE="https://www.libsdl.org/"
SRC_URI="https://www.libsdl.org/release/${MY_P}.tar.gz"

LICENSE="ZLIB"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~ppc ~ppc64 sparc ~x86"

IUSE="alsa aqua cpu_flags_ppc_altivec cpu_flags_x86_3dnow cpu_flags_x86_mmx cpu_flags_x86_sse cpu_flags_x86_sse2 custom-cflags dbus gles2 haptic jack +joystick kms libsamplerate nas opengl oss pulseaudio +sound static-libs +threads tslib udev +video video_cards_vc4 vulkan wayland X xinerama xscreensaver"
REQUIRED_USE="
	alsa? ( sound )
	gles2? ( video )
	jack? ( sound )
	nas? ( sound )
	opengl? ( video )
	pulseaudio? ( sound )
	vulkan? ( video )
	wayland? ( gles2 )
	xinerama? ( X )
	xscreensaver? ( X )"

CDEPEND="
	alsa? ( >=media-libs/alsa-lib-1.0.27.2[${MULTILIB_USEDEP}] )
	dbus? ( >=sys-apps/dbus-1.6.18-r1[${MULTILIB_USEDEP}] )
	gles2? ( >=media-libs/mesa-9.1.6[${MULTILIB_USEDEP},gles2] )
	jack? ( virtual/jack[${MULTILIB_USEDEP}] )
	kms? (
		>=x11-libs/libdrm-2.4.46[${MULTILIB_USEDEP}]
		>=media-libs/mesa-9.0.0[${MULTILIB_USEDEP},gbm]
	)
	libsamplerate? ( media-libs/libsamplerate[${MULTILIB_USEDEP}] )
	nas? (
		>=media-libs/nas-1.9.4[${MULTILIB_USEDEP}]
		>=x11-libs/libXt-1.1.4[${MULTILIB_USEDEP}]
	)
	opengl? (
		>=virtual/opengl-7.0-r1[${MULTILIB_USEDEP}]
		>=virtual/glu-9.0-r1[${MULTILIB_USEDEP}]
	)
	pulseaudio? ( >=media-sound/pulseaudio-2.1-r1[${MULTILIB_USEDEP}] )
	tslib? ( >=x11-libs/tslib-1.0-r3[${MULTILIB_USEDEP}] )
	udev? ( >=virtual/libudev-208:=[${MULTILIB_USEDEP}] )
	wayland? (
		>=dev-libs/wayland-1.0.6[${MULTILIB_USEDEP}]
		>=media-libs/mesa-9.1.6[${MULTILIB_USEDEP},egl,gles2,wayland]
		>=x11-libs/libxkbcommon-0.2.0[${MULTILIB_USEDEP}]
	)
	X? (
		>=x11-libs/libX11-1.6.2[${MULTILIB_USEDEP}]
		>=x11-libs/libXcursor-1.1.14[${MULTILIB_USEDEP}]
		>=x11-libs/libXext-1.3.2[${MULTILIB_USEDEP}]
		>=x11-libs/libXi-1.7.2[${MULTILIB_USEDEP}]
		>=x11-libs/libXrandr-1.4.2[${MULTILIB_USEDEP}]
		>=x11-libs/libXxf86vm-1.1.3[${MULTILIB_USEDEP}]
		xinerama? ( >=x11-libs/libXinerama-1.1.3[${MULTILIB_USEDEP}] )
		xscreensaver? ( >=x11-libs/libXScrnSaver-1.2.2-r1[${MULTILIB_USEDEP}] )
	)"
RDEPEND="${CDEPEND}
	vulkan? ( media-libs/vulkan-loader )"
DEPEND="${CDEPEND}
	vulkan? ( dev-util/vulkan-headers )
	X? ( x11-base/xorg-proto )
"
BDEPEND="
	virtual/pkgconfig
"

MULTILIB_WRAPPED_HEADERS=(
	/usr/include/SDL2/SDL_config.h
	/usr/include/SDL2/SDL_platform.h
	/usr/include/SDL2/begin_code.h
	/usr/include/SDL2/close_code.h
)

PATCHES=(
	"${FILESDIR}"/${PN}-2.0.12-static-libs.patch
	"${FILESDIR}"/${PN}-2.0.12-vulkan-headers.patch
)

S="${WORKDIR}/${MY_P}"

src_prepare() {
	default

	# Unbundle some headers.
	rm -r src/video/khronos || die
	ln -s "${SYSROOT}${EPREFIX}"/usr/include src/video/khronos || die

	AT_M4DIR="/usr/share/aclocal acinclude" eautoreconf
}

multilib_src_configure() {
	use custom-cflags || strip-flags

	# sorted by `./configure --help`
	local myeconfargs=(
		$(use_enable static-libs static)
		--enable-atomic
		$(use_enable sound audio)
		$(use_enable video)
		--enable-render
		--enable-events
		$(use_enable joystick)
		$(use_enable haptic)
		--enable-power
		--enable-filesystem
		$(use_enable threads)
		--enable-timers
		--enable-file
		--enable-loadso
		--enable-cpuinfo
		--enable-assembly
		$(use_enable cpu_flags_ppc_altivec altivec)
		$(use_enable cpu_flags_x86_sse ssemath)
		$(use_enable cpu_flags_x86_mmx mmx)
		$(use_enable cpu_flags_x86_3dnow 3dnow)
		$(use_enable cpu_flags_x86_sse sse)
		$(use_enable cpu_flags_x86_sse2 sse2)
		$(use_enable oss)
		$(use_enable alsa)
		--disable-alsa-shared
		$(use_enable jack)
		--disable-jack-shared
		--disable-esd
		$(use_enable pulseaudio)
		--disable-pulseaudio-shared
		--disable-arts
		$(use_enable libsamplerate)
		$(use_enable nas)
		--disable-nas-shared
		--disable-sndio
		--disable-sndio-shared
		$(use_enable sound diskaudio)
		$(use_enable sound dummyaudio)
		$(use_enable wayland video-wayland)
		--disable-wayland-shared
		$(use_enable video_cards_vc4 video-rpi)
		$(use_enable X video-x11)
		--disable-x11-shared
		$(use_enable X video-x11-xcursor)
		$(use_enable X video-x11-xdbe)
		$(use_enable xinerama video-x11-xinerama)
		$(use_enable X video-x11-xinput)
		$(use_enable X video-x11-xrandr)
		$(use_enable xscreensaver video-x11-scrnsaver)
		$(use_enable X video-x11-xshape)
		$(use_enable X video-x11-vm)
		$(use_enable aqua video-cocoa)
		--disable-video-directfb
		--disable-fusionsound
		--disable-fusionsound-shared
		$(use_enable kms video-kmsdrm)
		--disable-kmsdrm-shared
		$(use_enable video video-dummy)
		$(use_enable opengl video-opengl)
		--disable-video-opengles1
		$(use_enable gles2 video-opengles2)
		$(use_enable vulkan video-vulkan)
		$(use_enable udev libudev)
		$(use_enable dbus)
		--disable-ibus
		$(use_enable tslib input-tslib)
		--disable-directx
		--disable-rpath
		--disable-render-d3d
		$(use_with X x)
	)

	ECONF_SOURCE="${S}" econf "${myeconfargs[@]}"
}

multilib_src_compile() {
	emake V=1
}

multilib_src_install() {
	emake DESTDIR="${D}" install
}

multilib_src_install_all() {
	# Do not delete the static .a libraries here as some are
	# mandatory. They may be needed even when linking dynamically.
	find "${ED}" -type f -name "*.la" -delete || die
	dodoc {BUGS,CREDITS,README,README-SDL,TODO,WhatsNew}.txt docs/README*.md
}