games-emulation/citron: add citron emulator (git)

Special thanks to voyageur for this!

games-emulation/citron/Manifest

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+EBUILD citron-9999.ebuild 4305 BLAKE2B 76f0b1f39b8b26255d6731b43d1dd9422d1b39d3f5fa5636b4d248dba6a179cb88c11a1a8394d3eb77d14e4cc532a9c7700a6c1465e70429a5d3dca16e8f8461 SHA512 8519a3b1b994a9b455466389f2124fc2ababd50d69b85a6f0ad9e6abb679a4a1474e63c5267e9defcfe18c8c153b6c427b68bc68fd1cd89487e23eeecca524c5

games-emulation/citron/citron-9999.ebuild

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+# Copyright 2020-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake git-r3 xdg
+
+DESCRIPTION="An emulator for Nintendo Switch"
+HOMEPAGE="https://citron-emu.org"
+EGIT_REPO_URI="https://git.rgst.io/mirrors/Citron.git"
+EGIT_SUBMODULES=('-*' 'cpp-httplib' 'cpp-jwt' 'dynarmic' 'mbedtls' 'simpleini' 'sirit' 'xbyak' 'tzdb_to_nx'
+  'externals/nx_tzdb/tzdb_to_nx/externals/tz/tz' 'VulkanMemoryAllocator')
+# Dynarmic is not intended to be generic, it is tweaked to fit emulated processor
+# Bundled back some libs: cpp-* mbedtls
+
+# asio: use dev-cpp/asio until src/input_common/drivers/udp_client.cpp updated
+# system-vulkan: wait for 1.4.307 (also need vulkan-utility-libraries?)
+LICENSE="|| ( Apache-2.0 GPL-2+ ) 0BSD BSD GPL-2+ ISC MIT
+	!system-vulkan? ( Apache-2.0 )"
+SLOT="0"
+KEYWORDS=""
+IUSE="-compatibility-list +cubeb lto +qt6 sdl +system-libfmt -system-vulkan test webengine"
+
+RDEPEND="
+	>=app-arch/zstd-1.5
+	>=dev-libs/inih-52
+	>=dev-libs/openssl-1.1:=
+	>=media-video/ffmpeg-4.3:=
+	>=net-libs/enet-1.3
+	app-arch/lz4:=
+	dev-cpp/asio
+	dev-libs/boost:=[context]
+	media-libs/opus
+	>=media-libs/vulkan-loader-1.3.274
+	sys-libs/zlib
+	virtual/libusb:1
+	cubeb? ( media-libs/cubeb )
+	qt6? (
+		>=dev-qt/qtbase-6.6.0:6[gui,widgets]
+		webengine? ( dev-qt/qtwebengine:6[widgets] )
+	)
+	sdl? ( >=media-libs/libsdl2-2.28 )
+	system-libfmt? ( >=dev-libs/libfmt-9:= )
+"
+DEPEND="${RDEPEND}
+	system-vulkan? (
+		dev-util/spirv-headers
+		>=dev-util/vulkan-headers-1.3.274
+		dev-util/vulkan-utility-libraries
+		x11-libs/libX11
+	)
+	test? ( >dev-cpp/catch-3:0 )
+"
+BDEPEND="
+	>=dev-cpp/nlohmann_json-3.8.0
+	dev-cpp/robin-map
+	dev-util/glslang
+"
+REQUIRED_USE="|| ( qt6 sdl ) "
+RESTRICT="!test? ( test )"
+
+src_unpack() {
+  if use !system-vulkan; then
+    EGIT_SUBMODULES+=('externals/sirit/externals/SPIRV-Headers')
+    EGIT_SUBMODULES+=('Vulkan-Headers')
+    EGIT_SUBMODULES+=('Vulkan-Utility-Libraries')
+  fi
+
+  if use test; then
+    EGIT_SUBMODULES+=('Catch2')
+  fi
+
+  git-r3_src_unpack
+
+  # Do not fetch via sources because this file always changes
+  use compatibility-list && curl https://api.citron-emu.org/gamedb/ >"${S}"/compatibility_list.json
+}
+
+src_prepare() {
+  # temporary fix
+  sed -i -e '/Werror/d' src/CMakeLists.txt || die
+
+  # Workaround: GenerateSCMRev fails
+  sed -i -e "s/@GIT_BRANCH@/${EGIT_BRANCH:-master}/" \
+    -e "s/@GIT_REV@/$(git rev-parse --short HEAD)/" \
+    -e "s/@GIT_DESC@/$(git describe --always --long)/" \
+    src/common/scm_rev.cpp.in || die
+
+  # Unbundle cubeb
+  sed -i '/^if.*cubeb/,/^endif()/d' externals/CMakeLists.txt || die
+
+  # Unbundle enet
+  sed -i -e '/^if.*enet/,/^endif()/d' externals/CMakeLists.txt || die
+  sed -i -e '/enet\/enet\.h/{s/"/</;s/"/>/}' src/network/network.cpp || die
+
+  # LZ4 temporary fix: https://github.com/yuzu-emu/yuzu/pull/9054/commits/a8021f5a18bc5251aef54468fa6033366c6b92d9
+  sed -i 's/lz4::lz4/lz4/' src/common/CMakeLists.txt || die
+
+  if ! use system-libfmt; then # libfmt >= 9
+    sed -i '/fmt.*REQUIRED/d' CMakeLists.txt || die
+  fi
+
+  # asio fix
+  sed -e "/asio.hpp/a #include <asio.hpp>" -e "s/boost::asio/asio/g" \
+    -i src/input_common/drivers/udp_client.cpp || die
+
+  cmake_src_prepare
+}
+
+src_configure() {
+  local -a mycmakeargs=(
+    # Libraries are private and rely on circular dependency resolution.
+    -DCITRON_ENABLE_LTO=$(usex lto ON OFF)
+    -DBUILD_SHARED_LIBS=OFF # dynarmic
+    -DENABLE_COMPATIBILITY_LIST_DOWNLOAD=$(usex compatibility-list)
+    -DENABLE_CUBEB=$(usex cubeb ON OFF)
+    -DENABLE_LIBUSB=ON
+    -DENABLE_QT=$(usex qt6 ON OFF)
+    -DENABLE_QT_TRANSLATION=$(usex qt6 ON OFF)
+    -DENABLE_SDL2=$(usex sdl ON OFF)
+    -DENABLE_WEB_SERVICE=OFF
+    -DSIRIT_USE_SYSTEM_SPIRV_HEADERS=$(usex system-vulkan ON OFF)
+    -DUSE_DISCORD_PRESENCE=OFF
+    -DCITRON_TESTS=$(usex test)
+    -DCITRON_USE_EXTERNAL_VULKAN_HEADERS=$(usex system-vulkan OFF ON)
+    -DCITRON_USE_EXTERNAL_VULKAN_UTILITY_LIBRARIES=$(usex system-vulkan OF ON)
+    -DCITRON_USE_EXTERNAL_SDL2=OFF
+    -DCITRON_CHECK_SUBMODULES=false
+    -DCITRON_USE_QT_WEB_ENGINE=$(usex webengine ON OFF)
+  )
+
+  cmake_src_configure
+
+  # This would be better in src_unpack but it would be unlinked
+  if use compatibility-list; then
+    mv "${S}"/compatibility_list.json "${BUILD_DIR}"/dist/compatibility_list/ || die
+  fi
+}