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66 lines
1.8 KiB
66 lines
1.8 KiB
7 years ago
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# Copyright 1999-2017 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: epunt-cxx.eclass
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# @MAINTAINER:
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# base-system@gentoo.org
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# @BLURB: A function to punt C++ compiler checks from autoconf
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# @DESCRIPTION:
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# Support for punting C++ compiler checks from autoconf (based
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# on ELT-patches).
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if [[ -z ${_EPUNT_CXX_ECLASS} ]]; then
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# TODO: replace this with 'inherit eutils' once eutils stops inheriting
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# us
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if ! declare -F eqawarn >/dev/null ; then
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eqawarn() {
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has qa ${PORTAGE_ELOG_CLASSES} && ewarn "$@"
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:
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}
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fi
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# If an overlay has eclass overrides, but doesn't actually override the
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# libtool.eclass, we'll have ECLASSDIR pointing to the active overlay's
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# eclass/ dir, but libtool.eclass is still in the main Gentoo tree. So
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# add a check to locate the ELT-patches/ regardless of what's going on.
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# Note: Duplicated in libtool.eclass.
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_EUTILS_ECLASSDIR_LOCAL=${BASH_SOURCE[0]%/*}
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eutils_elt_patch_dir() {
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local d="${ECLASSDIR}/ELT-patches"
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if [[ ! -d ${d} ]] ; then
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d="${_EUTILS_ECLASSDIR_LOCAL}/ELT-patches"
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fi
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echo "${d}"
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}
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# @FUNCTION: epunt_cxx
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# @USAGE: [dir to scan]
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# @DESCRIPTION:
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# Many configure scripts wrongly bail when a C++ compiler could not be
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# detected. If dir is not specified, then it defaults to ${S}.
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#
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# https://bugs.gentoo.org/73450
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epunt_cxx() {
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local dir=$1
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[[ -z ${dir} ]] && dir=${S}
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ebegin "Removing useless C++ checks"
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local f p any_found
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while IFS= read -r -d '' f; do
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for p in "$(eutils_elt_patch_dir)"/nocxx/*.patch ; do
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if patch --no-backup-if-mismatch -p1 "${f}" "${p}" >/dev/null ; then
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any_found=1
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break
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fi
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done
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done < <(find "${dir}" -name configure -print0)
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if [[ -z ${any_found} ]]; then
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eqawarn "epunt_cxx called unnecessarily (no C++ checks to punt)."
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fi
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eend 0
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}
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_EPUNT_CXX_ECLASS=1
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fi #_EPUNT_CXX_ECLASS
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