games-emulation/flycast: new ebuild

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

games-emulation/flycast/flycast-9999.ebuild

@@ -0,0 +1,94 @@
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LUA_COMPAT=( lua5-{3..4} )
+
+inherit cmake 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' )
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS=""
+
+IUSE="alsa ao lua opengl +openmp pulseaudio vulkan"
+
+DEPEND="
+	dev-libs/libzip
+	media-libs/libsdl2
+	net-libs/miniupnpc
+	sys-libs/zlib
+	alsa? ( media-libs/alsa-lib )
+	ao? ( media-libs/libao )
+	lua? ( ${LUA_DEPS} )
+	opengl? ( virtual/opengl )
+	openmp? ( sys-devel/gcc:*[openmp] )
+	pulseaudio? ( media-sound/pulseaudio )
+	vulkan? (
+		dev-util/glslang
+		dev-util/spirv-headers
+	)
+"
+RDEPEND="${DEPEND}"
+BDEPEND=""
+
+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/${dep}
+	done
+
+	# Skip alsa if flag not enabled
+	use !alsa && sed -i -e '/find_package(ALSA)/d' CMakeLists.txt
+
+	# Skip ao if flag not enabled
+	use !ao && sed -i -e '/pkg_check_modules(AO/d' CMakeLists.txt
+
+	# Skip lua if flag not enabled
+	use !lua && sed -i -e '/find_package(Lua)/d' CMakeLists.txt
+
+	# Skip pulseaudio if flag not enabled
+	use !pulseaudio && sed -i -e '/pkg_check_modules(LIBPULSE/d' CMakeLists.txt
+
+	# Unbundle glslang
+	sed -i -e '/add_subdirectory(core\/deps\/glslang/{N;s/.*/find_library(GLSLANG libglslang.so)\nfind_library(SPIRV libSPIRV.so)\ntarget_link_libraries(${PROJECT_NAME} PRIVATE ${GLSLANG} ${SPIRV})/}' CMakeLists.txt || die
+	sed -i -e '/include.*SPIRV/{s:":<glslang/:;s/"/>/}' core/rend/vulkan/shaders.h \
+		core/rend/vulkan/compiler.cpp || die
+	sed -i -e '/maxMeshViewCountNV/a1,' core/rend/vulkan/compiler.cpp || die
+
+	# Unbundle xxHash
+	sed -i -e '/XXHASH_BUILD_XXHSUM/{N;N;s/.*/target_link_libraries(${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
+
+	cmake_src_prepare
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-DUSE_OPENGL=$(usex opengl)
+		-DUSE_OPENMP=$(usex openmp)
+		-DUSE_VULKAN=$(usex vulkan)
+		-DUSE_HOST_LIBZIP=ON
+		-DWITH_SYSTEM_ZLIB=ON
+	)
+	cmake_src_configure
+}

games-emulation/flycast/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+<maintainer type="person">
+	<name>mazes-80</name>
+	<email>mazes-80@none.org</email>
+</maintainer>
+<use>
+	<flag name="vulkan">Compile vulkan backend</flag>
+</use>
+</pkgmetadata>