games-emulation/flycast: new ebuild

Signed-off-by: Samuel Bauer <samuel.bauer@yahoo.fr>

games-emulation/flycast/flycast-9999.ebuild

@@ -0,0 +1,121 @@
+# Copyright 2022-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LUA_COMPAT=(lua5-4)
+
+inherit cmake flag-o-matic git-r3 lua-single xdg
+
+DESCRIPTION="Sega Dreamcast, Naomi and Atomiswave emulator"
+HOMEPAGE="https://github.com/flyinghead/flycast"
+EGIT_REPO_URI="https://github.com/flyinghead/flycast"
+EGIT_SUBMODULES=( 'core/deps/breakpad' 'core/deps/luabridge' 'core/deps/rcheevos' 'core/deps/volk' 'core/deps/VulkanMemoryAllocator' )
+
+LICENSE="GPL-2"
+SLOT="0"
+
+IUSE="alsa ao lua opengl +openmp pulseaudio vulkan"
+
+DEPEND="
+	dev-libs/libchdr
+	dev-libs/libzip
+	dev-libs/xxhash
+	media-libs/libsdl2
+	net-libs/miniupnpc
+	sys-libs/zlib
+	alsa? ( media-libs/alsa-lib )
+	ao? ( media-libs/libao )
+	lua? ( ${LUA_DEPS} )
+	opengl? ( virtual/opengl )
+	openmp? ( sys-devel/gcc:*[openmp] )
+	pulseaudio? ( media-libs/libpulse )
+	vulkan? (
+		>=dev-util/glslang-1.3.231:=
+		dev-util/spirv-headers
+	)
+"
+RDEPEND="${DEPEND}"
+
+REQUIRED_USE="|| ( opengl vulkan ) || ( ao alsa pulseaudio )"
+
+src_unpack() {
+	use lua && EGIT_SUBMODULES+=( 'core/deps/luabridge' )
+	git-r3_src_unpack
+}
+src_prepare() {
+	# Ensure unneeded deps are not bundled
+	for dep in chdr dirent glslang libretro-common libzip miniupnpc oboe patches SDL vixl xxHash; do
+		rm -rf core/deps/${dep}
+	done
+
+	# Skip alsa if flag not enabled
+	use !alsa && sed -i -e '/find_package(ALSA)/d' CMakeLists.txt
+
+	# Skip ao if flag not enabled
+	use !ao && sed -i -e '/pkg_check_modules(AO/d' CMakeLists.txt
+
+	if use lua; then # Lua 5.2 not available in gentoo anymore
+		sed -i -e '/find_package(Lua/s/5.2/5.4/' CMakeLists.txt
+	else # Skip lua if flag not enabled
+		sed -i -e '/find_package(Lua/d' CMakeLists.txt
+	fi
+
+	# Skip pulseaudio if flag not enabled
+	use !pulseaudio && sed -i -e '/pkg_check_modules(LIBPULSE/d' CMakeLists.txt
+
+	# Unbundle xxHash
+	sed -i -e '/XXHASH_BUILD_XXHSUM/{N;N;s/.*/target_link_libraries(${PROJECT_NAME} PRIVATE xxhash)/}' \
+		CMakeLists.txt || die
+
+	# Unbundle chdr
+	sed -i -e '/add_subdirectory.*chdr/d' -e 's/chdr-static/chdr/' \
+		-e 's:core/deps/chdr/include:/usr/include/chdr:' CMakeLists.txt || die
+
+	# Do not use ccache
+	sed -i -e '/find_program(CCACHE_FOUND/d' CMakeLists.txt
+
+	# Ensure static libs are not built
+	sed -i -e '/BUILD_SHARED_LIBS/d' CMakeLists.txt
+
+	# Vulkan-header
+	sed -i -e '/add_subdirectory(core.*Vulkan-Headers)$/,/Vulkan::Headers/d' \
+		-e '/core\/deps\/Vulkan-Headers\/include)/d' CMakeLists.txt
+	sed -i -e '/ResourceLimits.h/a#include <glslang/Public/ShaderLang.h>' \
+		core/rend/vulkan/compiler.cpp
+	if use vulkan; then
+		sed -i -e '$atarget_link_libraries(${PROJECT_NAME} PRIVATE glslang glslang-default-resource-limits)' CMakeLists.txt
+		if has_version >=dev-util/glslang-1.3.261; then
+			sed -i -e 's/throwResultException/detail::throwResultException/' core/rend/vulkan/vmallocator.{h,cpp}
+		fi
+		grep -rl 'vk::resultCheck' | xargs sed -i -e 's/vk::resultCheck/vk::detail::resultCheck/g'
+		sed -i -e '/end\/transform_matrix.h/a#include <set>' core/rend/vulkan/vulkan_context.cpp || die
+	fi
+
+	# Do not use ccache
+	sed -i -e '/find_program(CCACHE_PROGRAM ccache)/d' CMakeLists.txt
+
+	# Unbundle SDL under linux: (revert crazy commit: #4408aa7)
+	sed -i -e '/if(NOT APPLE AND (/s/.*/if( NOT APPLE )/' CMakeLists.txt
+
+	# Fix cmake version
+	sed -i -e '/cmake_minimum_required/s/2.6.*$/3.20)/' core/deps/xbyak/CMakeLists.txt || die
+	sed -i -e 's/3.2/3.20/' core/deps/glm/CMakeLists.txt || die
+
+	append-cxxflags -Wno-unused-result
+
+	cmake_src_prepare
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DUSE_OPENGL=$(usex opengl)
+		-DUSE_OPENMP=$(usex openmp)
+		-DUSE_VULKAN=$(usex vulkan)
+		-DUSE_HOST_LIBZIP=ON
+		-DUSE_HOST_GLSLANG=ON
+		-DUSE_HOST_SDL=ON
+		-DWITH_SYSTEM_ZLIB=ON
+	)
+	cmake_src_configure
+}

games-emulation/flycast/metadata.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+<maintainer type="person">
+	<name>Samuel Bauer</name>
+	<email>samuel.bauer@yahoo.fr</email>
+</maintainer>
+<use>
+	<flag name="vulkan">Compile vulkan backend</flag>
+</use>
+	<upstream>
+		<remote-id type="github">flyinghead/flycast</remote-id>
+	</upstream>
+</pkgmetadata>