games-board/stockfish/stockfish-15.1.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-ad9b42354671.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         # remove config sanity check that doesn't like our COMPILER settings
  29         sed -i -e 's/ config-sanity//g' Makefile || die
  30
  31         cp "${DISTDIR}"/${P}-${NNUE_FILE} ${NNUE_FILE} || die "copying the nnue file failed"
  32
  33         # prevent pre-stripping
  34         sed -e 's:-strip $(BINDIR)/$(EXE)::' -i Makefile \
  35                 || die 'failed to disable stripping in the Makefile'
  36 }
  37
  38 src_compile() {
  39         local my_arch
  40
  41         # generic unoptimized first
  42         use general-32 && my_arch=general-32
  43         use general-64 && my_arch=general-64
  44
  45         # x86
  46         use x86 && my_arch=x86-32-old
  47         use cpu_flags_x86_sse && my_arch=x86-32
  48
  49         # amd64
  50         use amd64 && my_arch=x86-64
  51         use cpu_flags_x86_popcnt && my_arch=x86-64-modern
  52
  53         # both bmi2 and avx2 are part of hni (haswell new instructions)
  54         use cpu_flags_x86_avx2 && my_arch=x86-64-bmi2
  55
  56         # other architectures
  57         use cpu_flags_arm_v7 && my_arch=armv7
  58         use ppc && my_arch=ppc
  59         use ppc64 && my_arch=ppc64
  60
  61         # There's a nice hack in the Makefile that overrides the value of CXX with
  62         # COMPILER to support Travis CI and we abuse it to make sure that we
  63         # build with our compiler of choice.
  64         emake profile-build ARCH="${my_arch}" \
  65                 COMP="$(tc-getCXX)" \
  66                 COMPILER="$(tc-getCXX)" \
  67                 debug=$(usex debug "yes" "no") \
  68                 optimize=$(usex optimize "yes" "no")
  69 }
  70
  71 src_install() {
  72         dobin "${PN}"
  73         dodoc ../AUTHORS ../README.md
  74 }