# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit toolchain-funcs

MY_P=${PN}-src-${PV}
DESCRIPTION="A fork of Mupen64 Nintendo 64 emulator, glide64mk2 video plugin"
HOMEPAGE="https://www.mupen64plus.org/"
SRC_URI="
	https://github.com/mupen64plus/${PN}/releases/download/${PV}/${MY_P}.tar.gz
	https://github.com/mupen64plus/mupen64plus-video-glide64mk2/commit/b44b0d1c439bae1cf6c334711ef1ea4d2b565053.patch
		-> ${P}-boost-1.85.patch
"
S=${WORKDIR}/${MY_P}

# TODO: 3dfx licenses
LICENSE="GPL-2+"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="gles2-only hires cpu_flags_x86_sse"

DEPEND="
	>=games-emulation/mupen64plus-core-2.5:0=[gles2-only=]
	media-libs/libpng:0=
	media-libs/libsdl2:0=[video]
	sys-libs/zlib:0=
	virtual/opengl:0=
	gles2-only? ( media-libs/libsdl2:0[gles2] )
	hires? ( dev-libs/boost:= )
"
RDEPEND="
	${DEPEND}
"
BDEPEND="virtual/pkgconfig"

src_prepare() {
	default

	# https://github.com/mupen64plus/mupen64plus-video-glide64mk2/commit/b44b0d1c439bae1cf6c334711ef1ea4d2b565053
	eapply "${DISTDIR}/${P}-boost-1.85.patch"

	# avoid implicitly appending CPU flags
	sed -i -e 's:-mmmx::g' -e 's:-msse::g' projects/unix/Makefile || die
}

src_compile() {
	MAKEARGS=(
		# Note: please keep this in sync in all of mupen64plus-* packages

		-C projects/unix

		# this basically means: GNU userspace
		UNAME=Linux

		# verbose output
		V=1

		CROSS_COMPILE="${CHOST}-"
		CC="$(tc-getCC)"
		CXX="$(tc-getCXX)"
		PKG_CONFIG="$(tc-getPKG_CONFIG)"
		# usual CFLAGS, CXXFLAGS and LDFLAGS are respected
		# so we can leave OPTFLAGS empty
		OPTFLAGS=

		# paths, some of them are used at compile time
		PREFIX=/usr
		LIBDIR=/usr/$(get_libdir)

		# disable unwanted magic
		LDCONFIG=:
		INSTALL_STRIP_FLAG=

		# Package-specific stuff

		# CROSS_COMPILE causes it to look for ${CHOST}-sdl2-config...
		SDL_CFLAGS="$($(tc-getPKG_CONFIG) --cflags sdl2)"
		SDL_LDLIBS="$($(tc-getPKG_CONFIG) --libs sdl2)"

		NOSSE=$(usex cpu_flags_x86_sse 0 1)
		HIRES=$(usex hires 1 0)
		USE_FRAMESKIPPER=1
		USE_GLES=$(usex gles2-only 1 0)
		# use bundled lib
		# https://bugs.gentoo.org/654470
		TXCDXTN=0
	)

	use amd64 && MAKEARGS+=( HOST_CPU=x86_64 )
	use x86 && MAKEARGS+=( HOST_CPU=i386 )

	emake "${MAKEARGS[@]}" all
}

src_install() {
	emake "${MAKEARGS[@]}" DESTDIR="${D}" install
	dodoc RELEASE
}