games-board/stockfish/stockfish-14.ebuild

   1 # Copyright 1999-2024 Gentoo Authors
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 EAPI=7
   5
   6 inherit toolchain-funcs
   7
   8 DESCRIPTION="Free UCI chess engine, claimed to be the strongest in the world"
   9 HOMEPAGE="https://stockfishchess.org/"
  10
  11 NNUE_FILE="nn-3475407dc199.nnue"
  12
  13 SRC_URI="https://github.com/official-stockfish/Stockfish/archive/sf_${PV}.tar.gz -> ${P}.tar.gz
  14         https://tests.stockfishchess.org/api/nn/${NNUE_FILE} -> ${P}-${NNUE_FILE}"
  15 LICENSE="GPL-3"
  16 SLOT="0"
  17 KEYWORDS="~amd64 ~riscv ~x86"
  18 IUSE="cpu_flags_arm_v7 cpu_flags_x86_avx2 cpu_flags_x86_popcnt cpu_flags_x86_sse debug
  19         general-32 general-64 +optimize"
  20
  21 DEPEND="|| ( app-arch/unzip app-arch/zip )"
  22
  23 S="${WORKDIR}/Stockfish-sf_${PV}/src"
  24
  25 src_prepare() {
  26         default
  27
  28         cp "${DISTDIR}"/${P}-${NNUE_FILE} ${NNUE_FILE} || die "copying the nnue file failed"
  29
  30         # prevent pre-stripping
  31         sed -e 's:-strip $(BINDIR)/$(EXE)::' -i Makefile \
  32                 || die 'failed to disable stripping in the Makefile'
  33 }
  34
  35 src_compile() {
  36         local my_arch
  37
  38         # generic unoptimized first
  39         use general-32 && my_arch=general-32
  40         use general-64 && my_arch=general-64
  41
  42         # x86
  43         use x86 && my_arch=x86-32-old
  44         use cpu_flags_x86_sse && my_arch=x86-32
  45
  46         # amd64
  47         use amd64 && my_arch=x86-64
  48         use cpu_flags_x86_popcnt && my_arch=x86-64-modern
  49
  50         # both bmi2 and avx2 are part of hni (haswell new instructions)
  51         use cpu_flags_x86_avx2 && my_arch=x86-64-bmi2
  52
  53         # other architectures
  54         use cpu_flags_arm_v7 && my_arch=armv7
  55         use ppc && my_arch=ppc
  56         use ppc64 && my_arch=ppc64
  57
  58         # Skip the "build" target and use "all" instead to avoid the config
  59         # sanity check (which would throw a fit about our compiler). There's
  60         # a nice hack in the Makefile that overrides the value of CXX with
  61         # COMPILER to support Travis CI and we abuse it to make sure that we
  62         # build with our compiler of choice.
  63         emake all ARCH="${my_arch}" \
  64                 COMP="$(tc-getCXX)" \
  65                 COMPILER="$(tc-getCXX)" \
  66                 debug=$(usex debug "yes" "no") \
  67                 optimize=$(usex optimize "yes" "no")
  68 }
  69
  70 src_install() {
  71         dobin "${PN}"
  72         dodoc ../AUTHORS ../README.md
  73 }