games-board/stockfish/stockfish-16.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-5af11540bbfe.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 ~arm64 ~loong ~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 pkg_setup() {
  26         if ! tc-is-clang && ! tc-is-gcc; then
  27                 die "Unsupported compiler: $(tc-getCC)"
  28         fi
  29 }
  30
  31 src_prepare() {
  32         default
  33
  34         # remove config sanity check that doesn't like our COMPILER settings
  35         sed -i -e 's/ config-sanity//g' Makefile || die
  36
  37         cp "${DISTDIR}"/${P}-${NNUE_FILE} ${NNUE_FILE} || die "copying the nnue file failed"
  38
  39         # prevent pre-stripping
  40         sed -e 's:-strip $(BINDIR)/$(EXE)::' -i Makefile \
  41                 || die 'failed to disable stripping in the Makefile'
  42
  43         # Makefile is a bit optimistic
  44         sed -e 's:-flto=full:-flto:g' -i Makefile || die
  45 }
  46
  47 src_compile() {
  48         local my_arch
  49
  50         # generic unoptimized first
  51         use general-32 && my_arch=general-32
  52         use general-64 && my_arch=general-64
  53
  54         # x86
  55         use x86 && my_arch=x86-32-old
  56         use cpu_flags_x86_sse && my_arch=x86-32
  57
  58         # amd64
  59         use amd64 && my_arch=x86-64
  60         use cpu_flags_x86_popcnt && my_arch=x86-64-modern
  61
  62         # both bmi2 and avx2 are part of hni (haswell new instructions)
  63         use cpu_flags_x86_avx2 && my_arch=x86-64-bmi2
  64
  65         # other architectures
  66         use cpu_flags_arm_v7 && my_arch=armv7
  67         use ppc && my_arch=ppc
  68         use ppc64 && my_arch=ppc64
  69
  70         # Bug 919781: COMP is a fixed string like clang/gcc to set tools for PGO
  71         local comp
  72         tc-is-gcc && comp="gcc"
  73         tc-is-clang && comp="clang"
  74
  75         # There's a nice hack in the Makefile that overrides the value of CXX with
  76         # COMPILER to support Travis CI and we abuse it to make sure that we
  77         # build with our compiler of choice.
  78         emake profile-build ARCH="${my_arch}" \
  79                 COMP="${comp}" \
  80                 COMPILER="$(tc-getCXX)" \
  81                 debug=$(usex debug "yes" "no") \
  82                 optimize=$(usex optimize "yes" "no")
  83 }
  84
  85 src_install() {
  86         dobin "${PN}"
  87         dodoc ../AUTHORS ../README.md
  88 }