75 lines
2.5 KiB
Bash
75 lines
2.5 KiB
Bash
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# Copyright 1999-2018 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: preserve-libs.eclass
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# @MAINTAINER:
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# base-system@gentoo.org
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# @BLURB: preserve libraries after SONAME changes
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if [[ -z ${_PRESERVE_LIBS_ECLASS} ]]; then
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_PRESERVE_LIBS_ECLASS=1
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# @FUNCTION: preserve_old_lib
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# @USAGE: <libs to preserve> [more libs]
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# @DESCRIPTION:
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# These functions are useful when a lib in your package changes ABI SONAME.
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# An example might be from libogg.so.0 to libogg.so.1. Removing libogg.so.0
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# would break packages that link against it. Most people get around this
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# by using the portage SLOT mechanism, but that is not always a relevant
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# solution, so instead you can call this from pkg_preinst. See also the
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# preserve_old_lib_notify function.
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preserve_old_lib() {
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if [[ ${EBUILD_PHASE} != "preinst" ]] ; then
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eerror "preserve_old_lib() must be called from pkg_preinst() only"
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die "Invalid preserve_old_lib() usage"
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fi
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[[ -z $1 ]] && die "Usage: preserve_old_lib <library to preserve> [more libraries to preserve]"
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# let portage worry about it
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has preserve-libs ${FEATURES} && return 0
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has "${EAPI:-0}" 0 1 2 && local ED=${D} EROOT=${ROOT}
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local lib dir
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for lib in "$@" ; do
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[[ -e ${EROOT}/${lib} ]] || continue
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dir=${lib%/*}
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dodir ${dir} || die "dodir ${dir} failed"
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cp "${EROOT}"/${lib} "${ED}"/${lib} || die "cp ${lib} failed"
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touch "${ED}"/${lib}
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done
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}
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# @FUNCTION: preserve_old_lib_notify
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# @USAGE: <libs to notify> [more libs]
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# @DESCRIPTION:
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# Spit helpful messages about the libraries preserved by preserve_old_lib.
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preserve_old_lib_notify() {
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if [[ ${EBUILD_PHASE} != "postinst" ]] ; then
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eerror "preserve_old_lib_notify() must be called from pkg_postinst() only"
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die "Invalid preserve_old_lib_notify() usage"
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fi
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# let portage worry about it
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has preserve-libs ${FEATURES} && return 0
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has "${EAPI:-0}" 0 1 2 && local EROOT=${ROOT}
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local lib notice=0
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for lib in "$@" ; do
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[[ -e ${EROOT}/${lib} ]] || continue
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if [[ ${notice} -eq 0 ]] ; then
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notice=1
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ewarn "Old versions of installed libraries were detected on your system."
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ewarn "In order to avoid breaking packages that depend on these old libs,"
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ewarn "the libraries are not being removed. You need to run revdep-rebuild"
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ewarn "in order to remove these old dependencies. If you do not have this"
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ewarn "helper program, simply emerge the 'gentoolkit' package."
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ewarn
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fi
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ewarn " # revdep-rebuild --library '${lib}' && rm '${lib}'"
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done
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}
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fi
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