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57 lines
1.6 KiB
57 lines
1.6 KiB
# Copyright 2022 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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DESCRIPTION="yacc symlinks"
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HOMEPAGE="https://wiki.gentoo.org/wiki/Project:Base/Alternatives"
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SRC_URI=""
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S=${WORKDIR}
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LICENSE="CC0-1.0"
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SLOT="0"
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KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
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IUSE="+bison byacc reference"
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REQUIRED_USE="^^ ( bison byacc reference )"
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RDEPEND="
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bison? ( >=sys-devel/bison-3.8.2-r1 )
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byacc? ( dev-util/byacc )
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reference? ( >=dev-util/yacc-1.9.1-r7 )
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!<dev-util/yacc-1.9.1-r7
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!<sys-devel/bison-3.8.2-r1
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"
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src_install() {
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if use bison; then
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# bison installs its own small wrapper script 'yacc-bison'
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# around bison(1).
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dosym yacc.bison /usr/bin/yacc
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newman - yacc.1 <<<".so yacc.bison.1"
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# Leaving this for now to be safe, as it's closer to pre-alternatives
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# status quo to leave it unset and let autoconf probe for Bison by itself
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# as it prefers it anyway, and might be a CPP-like situation wrt
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# calling bison or bison -y if YACC is set.
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#newenvd - 90yacc <<-EOF
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# YACC=yacc.bison
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#EOF
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elif use byacc; then
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dosym byacc /usr/bin/yacc
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newman - yacc.1 <<<".so byacc.1"
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newenvd - 90yacc <<-EOF
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YACC=byacc
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EOF
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elif use reference; then
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dosym yacc-reference /usr/bin/yacc
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newman - yacc.1 <<<".so yacc-reference.1"
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newenvd - 90yacc <<-EOF
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YACC=yacc
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EOF
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else
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die "Invalid USE flag combination (broken REQUIRED_USE?)"
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fi
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}
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