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# Copyright 1999-2024 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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inherit cmake flag-o-matic
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DESCRIPTION="Intel Open Path Guiding Library"
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HOMEPAGE="https://github.com/OpenPathGuidingLibrary/openpgl"
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SRC_URI="https://github.com/OpenPathGuidingLibrary/openpgl/archive/v${PV}.tar.gz -> ${P}.tar.gz"
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LICENSE="Apache-2.0"
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SLOT="0/$(ver_cut 1-2)"
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KEYWORDS="-* ~amd64 ~arm64"
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X86_CPU_FLAGS=( sse4_2 avx2 avx512dq )
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CPU_FLAGS=( cpu_flags_arm_neon "${X86_CPU_FLAGS[@]/#/cpu_flags_x86_}" )
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IUSE="${CPU_FLAGS[*]} debug"
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REQUIRED_USE="
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amd64? ( || ( ${X86_CPU_FLAGS[*]/#/cpu_flags_x86_} ) )
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arm64? ( cpu_flags_arm_neon )
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"
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RDEPEND="
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media-libs/embree:=
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dev-cpp/tbb:=
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"
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DEPEND="${RDEPEND}"
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src_configure() {
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# -Werror=strict-aliasing
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# https://bugs.gentoo.org/926890
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#
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# Upstream "solved" this by setting -fno-strict-aliasing themselves.
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# Do not trust with LTO.
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filter-lto
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local mycmakeargs=(
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-DOPENPGL_ISA_SSE4="$(usex cpu_flags_x86_sse4_2)"
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-DOPENPGL_ISA_AVX2="$(usex cpu_flags_x86_avx2)"
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-DOPENPGL_ISA_AVX512="$(usex cpu_flags_x86_avx512dq)"
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-DOPENPGL_ISA_NEON="$(usex cpu_flags_arm_neon)"
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# TODO look into neon 2x support
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# -DOPENPGL_ISA_NEON2X="$(usex cpu_flags_arm_neon2x)"
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)
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# This is currently needed on arm64 to get the NEON SIMD wrapper to compile the code successfully
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use cpu_flags_arm_neon && append-flags -flax-vector-conversions
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# Disable asserts
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append-cppflags "$(usex debug '' '-DNDEBUG')"
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cmake_src_configure
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}
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