app-emulation/dxvk: fix setup script with wine[wow64]

Currently it will try to install both 32bit and 64bit dlls
in system32. Very few likely use wow64 so far, but this could
come biting later without a revbump.

Ideally do not want to use these scripts anymore and write
something new that could be packaged separately and shared
between dxvk, vkd3d-proton, and potential new packages.
Albeit haven't explored the cleanest way to do this yet,
so just do a dirty sanity check + fallback for now (wish
could just use these directly from system paths, but wine
really does not seem to offer a way to do this).

Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

1 files changed, 148 insertions, 0 deletions

diff --git a/app-emulation/dxvk/dxvk-1.10.3-r1.ebuild b/app-emulation/dxvk/dxvk-1.10.3-r1.ebuild
new file mode 100644
index 000000000000..3a56e2fdd338
--- /dev/null
+++ b/app-emulation/dxvk/dxvk-1.10.3-r1.ebuild
@@ -0,0 +1,148 @@
+# Copyright 2022-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# note: version <2.0 should be kept for longer given it's the
+# last version to support <wine-7.1 and <nvidia-drivers-510
+
+MULTILIB_ABIS="amd64 x86" # allow usage on /no-multilib/
+MULTILIB_COMPAT=( abi_x86_{32,64} )
+inherit flag-o-matic meson-multilib
+
+if [[ ${PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/doitsujin/dxvk.git"
+else
+	SRC_URI="https://github.com/doitsujin/dxvk/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="-* amd64 x86"
+fi
+
+DESCRIPTION="Vulkan-based implementation of D3D9, D3D10 and D3D11 for Linux / Wine"
+HOMEPAGE="https://github.com/doitsujin/dxvk/"
+
+LICENSE="ZLIB"
+SLOT="0"
+IUSE="+abi_x86_32 crossdev-mingw +d3d9 +d3d10 +d3d11 debug +dxgi"
+REQUIRED_USE="
+	|| ( d3d9 d3d10 d3d11 dxgi )
+	d3d10? ( d3d11 )
+	dxgi? ( d3d11 )"
+
+BDEPEND="
+	dev-util/glslang
+	!crossdev-mingw? ( dev-util/mingw64-toolchain[${MULTILIB_USEDEP}] )"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.10.3-gcc13.patch
+	"${FILESDIR}"/${PN}-1.10.3-wow64-setup.patch
+)
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} == binary ]] && return
+
+	if use crossdev-mingw && [[ ! -v MINGW_BYPASS ]]; then
+		local tool=-w64-mingw32-g++
+		for tool in $(usev abi_x86_64 x86_64${tool}) $(usev abi_x86_32 i686${tool}); do
+			if ! type -P ${tool} >/dev/null; then
+				eerror "With USE=crossdev-mingw, it is necessary to setup the mingw toolchain."
+				eerror "For instructions, please see: https://wiki.gentoo.org/wiki/Mingw"
+				use abi_x86_32 && use abi_x86_64 &&
+					eerror "Also, with USE=abi_x86_32, will need both i686 and x86_64 toolchains."
+				die "USE=crossdev-mingw is set but ${tool} was not found"
+			elif [[ ! $(LC_ALL=C ${tool} -v 2>&1) =~ "Thread model: posix" ]]; then
+				eerror "${PN} requires GCC to be built with --enable-threads=posix"
+				eerror "Please see: https://wiki.gentoo.org/wiki/Mingw#POSIX_threads_for_Windows"
+				die "USE=crossdev-mingw is set but ${tool} does not use POSIX threads"
+			fi
+		done
+	fi
+}
+
+src_prepare() {
+	default
+
+	sed -i "/^basedir=/s|=.*|=${EPREFIX}/usr/lib/${PN}|" setup_dxvk.sh || die
+}
+
+src_configure() {
+	use crossdev-mingw || PATH=${BROOT}/usr/lib/mingw64-toolchain/bin:${PATH}
+
+	# -mavx with mingw-gcc has a history of obscure issues and
+	# disabling is seen as safer, e.g. `WINEARCH=win32 winecfg`
+	# crashes with -march=skylake >=wine-8.10, similar issues with
+	# znver4: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110273
+	append-flags -mno-avx
+
+	if [[ ${CHOST} != *-mingw* ]]; then
+		if [[ ! -v MINGW_BYPASS ]]; then
+			unset AR CC CXX RC STRIP
+			filter-flags '-fuse-ld=*'
+			filter-flags '-mfunction-return=thunk*' #878849
+			if has_version '<dev-util/mingw64-toolchain-11' ||
+				{ use crossdev-mingw &&
+					has_version "<cross-$(usex x86 i686 x86_64)-w64-mingw32/mingw64-runtime-11"; }
+			then
+				filter-flags '-fstack-protector*' #870136
+			fi
+		fi
+
+		CHOST_amd64=x86_64-w64-mingw32
+		CHOST_x86=i686-w64-mingw32
+		CHOST=$(usex x86 ${CHOST_x86} ${CHOST_amd64})
+
+		strip-unsupported-flags
+	fi
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	# multilib's ${CHOST_amd64}-gcc -m32 is unusable with crossdev,
+	# unset again so meson eclass will set ${CHOST}-gcc + others
+	use crossdev-mingw && [[ ! -v MINGW_BYPASS ]] && unset AR CC CXX RC STRIP
+
+	local emesonargs=(
+		--prefix="${EPREFIX}"/usr/lib/${PN}
+		--{bin,lib}dir=x${MULTILIB_ABI_FLAG: -2}
+		$(meson_use {,enable_}d3d9)
+		$(meson_use {,enable_}d3d10)
+		$(meson_use {,enable_}d3d11)
+		$(meson_use {,enable_}dxgi)
+		$(usev !debug --strip) # portage won't strip .dll, so allow it here
+		-Denable_tests=false # needs wine/vulkan and is intended for manual use
+	)
+
+	meson_src_configure
+}
+
+multilib_src_install_all() {
+	dobin setup_dxvk.sh
+	dodoc README.md dxvk.conf
+
+	find "${ED}" -type f -name '*.a' -delete || die
+}
+
+pkg_preinst() {
+	[[ -e ${EROOT}/usr/$(get_libdir)/dxvk/d3d11.dll ]] && DXVK_HAD_OVERLAY=
+}
+
+pkg_postinst() {
+	if [[ ! ${REPLACING_VERSIONS} ]]; then
+		elog "To enable ${PN} on a wine prefix, you can run the following command:"
+		elog
+		elog "	WINEPREFIX=/path/to/prefix setup_dxvk.sh install --symlink"
+		elog
+		elog "See ${EROOT}/usr/share/doc/${PF}/README.md* for details."
+	elif [[ -v DXVK_HAD_OVERLAY ]]; then
+		# temporary warning until this version is more widely used
+		elog "Gentoo's main repo ebuild for ${PN} uses different paths than most overlays."
+		elog "If you were using symbolic links in wine prefixes it may be necessary to"
+		elog "refresh them by re-running the command:"
+		elog
+		elog "	WINEPREFIX=/path/to/prefix setup_dxvk.sh install --symlink"
+		elog
+		elog "Also, if you were using /etc/${PN}.conf, ${PN} is no longer patched to load"
+		elog "it. See ${EROOT}/usr/share/doc/${PF}/README.md* for handling configs."
+	fi
+}