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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
inherit toolchain-glibc
DESCRIPTION="GNU libc6 (also called glibc2) C library"
HOMEPAGE="https://www.gnu.org/software/libc/libc.html"
LICENSE="LGPL-2.1+ BSD HPND ISC inner-net rc PCRE"
KEYWORDS="alpha amd64 arm arm64 hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86"
RESTRICT="strip" # strip ourself #46186
EMULTILIB_PKG="true"
# Configuration variables
RELEASE_VER=""
case ${PV} in
9999*)
EGIT_REPO_URIS="git://sourceware.org/git/glibc.git"
EGIT_SOURCEDIRS="${S}"
inherit git-2
;;
*)
RELEASE_VER=${PV}
;;
esac
GCC_BOOTSTRAP_VER="4.7.3-r1"
PATCH_VER="8" # Gentoo patchset
NPTL_KERN_VER=${NPTL_KERN_VER:-"2.6.16"} # min kernel version nptl requires
IUSE="debug gd hardened multilib nscd selinux systemtap profile suid vanilla crosscompile_opts_headers-only"
# Here's how the cross-compile logic breaks down ...
# CTARGET - machine that will target the binaries
# CHOST - machine that will host the binaries
# CBUILD - machine that will build the binaries
# If CTARGET != CHOST, it means you want a libc for cross-compiling.
# If CHOST != CBUILD, it means you want to cross-compile the libc.
# CBUILD = CHOST = CTARGET - native build/install
# CBUILD != (CHOST = CTARGET) - cross-compile a native build
# (CBUILD = CHOST) != CTARGET - libc for cross-compiler
# CBUILD != CHOST != CTARGET - cross-compile a libc for a cross-compiler
# For install paths:
# CHOST = CTARGET - install into /
# CHOST != CTARGET - install into /usr/CTARGET/
export CBUILD=${CBUILD:-${CHOST}}
export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} == ${CHOST} ]] ; then
if [[ ${CATEGORY} == cross-* ]] ; then
export CTARGET=${CATEGORY#cross-}
fi
fi
[[ ${CTARGET} == hppa* ]] && NPTL_KERN_VER=${NPTL_KERN_VER/2.6.16/2.6.20}
is_crosscompile() {
[[ ${CHOST} != ${CTARGET} ]]
}
# Why SLOT 2.2 you ask yourself while sippin your tea ?
# Everyone knows 2.2 > 0, duh.
SLOT="2.2"
# General: We need a new-enough binutils/gcc to match upstream baseline.
# arch: we need to make sure our binutils/gcc supports TLS.
DEPEND=">=app-misc/pax-utils-0.1.10
!<sys-apps/sandbox-1.6
!<sys-apps/portage-2.1.2
selinux? ( sys-libs/libselinux )"
RDEPEND="!sys-kernel/ps3-sources
selinux? ( sys-libs/libselinux )
!sys-libs/nss-db"
if [[ ${CATEGORY} == cross-* ]] ; then
DEPEND+=" !crosscompile_opts_headers-only? (
>=${CATEGORY}/binutils-2.20
>=${CATEGORY}/gcc-4.3
)"
[[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
else
DEPEND+="
>=sys-devel/binutils-2.20
>=sys-devel/gcc-4.3
virtual/os-headers
!vanilla? ( >=sys-libs/timezone-data-2012c )"
RDEPEND+="
vanilla? ( !sys-libs/timezone-data )
!vanilla? ( sys-libs/timezone-data )"
fi
upstream_uris() {
echo mirror://gnu/glibc/$1 ftp://sourceware.org/pub/glibc/{releases,snapshots}/$1 mirror://gentoo/$1
}
gentoo_uris() {
local devspace="HTTP~vapier/dist/URI HTTP~azarah/glibc/URI"
devspace=${devspace//HTTP/https://dev.gentoo.org/}
echo mirror://gentoo/$1 ${devspace//URI/$1}
}
SRC_URI=$(
[[ -z ${EGIT_REPO_URIS} ]] && upstream_uris ${P}.tar.xz
[[ -n ${PATCH_VER} ]] && gentoo_uris ${P}-patches-${PATCH_VER}.tar.bz2
)
SRC_URI+=" ${GCC_BOOTSTRAP_VER:+multilib? ( $(gentoo_uris gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2) )}"
src_unpack() {
GLIBC_PATCH_EXCLUDE+=" 6600_mips_librt-mips.patch" #456912
[[ -n ${GCC_BOOTSTRAP_VER} ]] && use multilib && unpack gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2
toolchain-glibc_src_unpack
if use hardened ; then
cd "${S}"
einfo "Patching to get working PIE binaries on PIE (hardened) platforms"
tc-enables-pie && epatch "${FILESDIR}"/2.17/glibc-2.17-hardened-pie.patch
epatch "${FILESDIR}"/2.10/glibc-2.10-hardened-configure-picdefault.patch
epatch "${FILESDIR}"/2.10/glibc-2.10-hardened-inittls-nosysenter.patch
einfo "Installing Hardened Gentoo SSP and FORTIFY_SOURCE handler"
cp -f "${FILESDIR}"/2.6/glibc-2.6-gentoo-stack_chk_fail.c \
debug/stack_chk_fail.c || die
cp -f "${FILESDIR}"/2.10/glibc-2.10-gentoo-chk_fail.c \
debug/chk_fail.c || die
if use debug ; then
# When using Hardened Gentoo stack handler, have smashes dump core for
# analysis - debug only, as core could be an information leak
# (paranoia).
sed -i \
-e '/^CFLAGS-backtrace.c/ iCFLAGS-stack_chk_fail.c = -DSSP_SMASH_DUMPS_CORE' \
debug/Makefile \
|| die "Failed to modify debug/Makefile for debug stack handler"
sed -i \
-e '/^CFLAGS-backtrace.c/ iCFLAGS-chk_fail.c = -DSSP_SMASH_DUMPS_CORE' \
debug/Makefile \
|| die "Failed to modify debug/Makefile for debug fortify handler"
fi
# Build nscd with ssp-all
sed -i \
-e 's:-fstack-protector$:-fstack-protector-all:' \
nscd/Makefile \
|| die "Failed to ensure nscd builds with ssp-all"
fi
}
pkg_preinst() {
toolchain-glibc_pkg_preinst
if [[ ${CTARGET} == arm* ]] ; then
# Backwards compat support for renaming hardfp ldsos #417287
local oldso='/lib/ld-linux.so.3'
local nldso='/lib/ld-linux-armhf.so.3'
if [[ -e ${D}${nldso} ]] ; then
if scanelf -qRyi "${ROOT}$(alt_prefix)"/*bin/ | grep -s "^${oldso}" ; then
ewarn "Symlinking old ldso (${oldso}) to new ldso (${nldso})."
ewarn "Please rebuild all packages using this old ldso as compat"
ewarn "support will be dropped in the future."
ln -s "${nldso##*/}" "${D}$(alt_prefix)${oldso}"
fi
fi
fi
}
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