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# Copyright 2022-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
ALTERNATIVES=(
"bison:>=sys-devel/bison-3.8.2-r1"
byacc:dev-util/byacc
"reference:>=dev-util/yacc-1.9.1-r7"
)
inherit app-alternatives
DESCRIPTION="yacc symlinks"
KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~x64-cygwin ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~sparc64-solaris ~x64-solaris"
RDEPEND="
!<dev-util/yacc-1.9.1-r7
!<sys-devel/bison-3.8.2-r1
"
src_install() {
local alt=$(get_alternative)
case ${alt} in
# bison installs its own small wrapper script 'yacc-bison'
# around bison(1).
bison) alt=yacc.bison;;
reference) alt=yacc-reference;;
esac
dosym "${alt}" /usr/bin/yacc
newman - yacc.1 <<<".so ${alt}.1"
# Leaving this for now to be safe, as it's closer to pre-alternatives
# status quo to leave it unset and let autoconf probe for Bison by itself
# as it prefers it anyway, and might be a CPP-like situation wrt
# calling bison or bison -y if YACC is set.
if [[ ${alt} != yacc.bison ]]; then
newenvd - 90yacc <<-EOF
YACC=${alt}
EOF
fi
}
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