# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI = "5"
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"
EMULTILIB_PKG = "true"
# Configuration variables
RELEASE_VER = ""
case ${ PV } in
9999*)
EGIT_REPO_URIS = "git://sourceware.org/git/glibc.git"
inherit git-r3
; ;
*)
RELEASE_VER = ${ PV }
; ;
esac
GCC_BOOTSTRAP_VER = "4.7.3-r1"
# patches live at https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo/src/patchsets/glibc/
PATCH_VER = "10" # Gentoo patchset
: ${ NPTL_KERN_VER : = "2.6.32" } # min kernel version nptl requires
IUSE = "audit caps debug gd hardened multilib nscd +rpc selinux systemtap profile suid vanilla 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
# Note [Disable automatic stripping]
# Disabling automatic stripping for a few reasons:
# - portage's attempt to strip breaks non-native binaries at least on
# arm: bug #697428
# - portage's attempt to strip libpthread.so.0 breaks gdb thread
# enumeration: bug #697910. This is quite subtle:
# * gdb uses glibc's libthread_db-1.0.so to enumerate threads.
# * libthread_db-1.0.so needs access to libpthread.so.0 local symbols
# via 'ps_pglobal_lookup' symbol defined in gdb.
# * 'ps_pglobal_lookup' uses '.symtab' section table to resolve all
# known symbols in 'libpthread.so.0'. Specifically 'nptl_version'
# (unexported) is used to sanity check compatibility before enabling
# debugging.
# Also see https://sourceware.org/gdb/wiki/FAQ#GDB_does_not_see_any_threads_besides_the_one_in_which_crash_occurred.3B_or_SIGTRAP_kills_my_program_when_I_set_a_breakpoint
# * normal 'strip' command trims '.symtab'
# Thus our main goal here is to prevent 'libpthread.so.0' from
# losing it's '.symtab' entries.
# As Gentoo's strip does not allow us to pass less aggressive stripping
# options and does not check the machine target we disable stripping
# entirely.
RESTRICT = strip
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.
COMMON_DEPEND = "
nscd? ( selinux? (
audit? ( sys-process/audit )
caps? ( sys-libs/libcap )
) )
suid? ( caps? ( sys-libs/libcap ) )
selinux? ( sys-libs/libselinux )
"
DEPEND = " ${ COMMON_DEPEND }
>= app-misc/pax-utils-0.1.10
!<sys-apps/sandbox-1.6
!<sys-apps/portage-2.1.2"
RDEPEND = " ${ COMMON_DEPEND }
!sys-kernel/ps3-sources
sys-apps/gentoo-functions
!sys-libs/nss-db"
if [ [ ${ CATEGORY } = = cross-* ] ] ; then
DEPEND += " !headers-only? (
>= ${ CATEGORY } /binutils-2.24
>= ${ CATEGORY } /gcc-4.7
) "
[ [ ${ CATEGORY } = = *-linux* ] ] && DEPEND += " ${ CATEGORY } /linux-headers "
else
DEPEND += "
>= sys-devel/binutils-2.24
>= sys-devel/gcc-4.7
virtual/os-headers"
RDEPEND += " vanilla? ( !sys-libs/timezone-data )"
PDEPEND += " !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 HTTP~tamiko/distfiles/URI HTTP~slyfox/distfiles/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( ) {
[ [ -n ${ GCC_BOOTSTRAP_VER } ] ] && use multilib && unpack gcc-${ GCC_BOOTSTRAP_VER } -multilib-bootstrap.tar.bz2
toolchain-glibc_src_unpack
}
src_prepare( ) {
toolchain-glibc_src_prepare
cd " ${ S } "
epatch " ${ FILESDIR } " /2.19/${ PN } -2.19-ia64-gcc-4.8-reloc-hack.patch #503838
if use hardened ; then
# We don't enable these for non-hardened as the output is very terse --
# it only states that a crash happened. The default upstream behavior
# includes backtraces and symbols.
einfo "Installing Hardened Gentoo SSP and FORTIFY_SOURCE handler"
cp " ${ FILESDIR } " /2.20/glibc-2.20-gentoo-stack_chk_fail.c debug/stack_chk_fail.c || die
cp " ${ FILESDIR } " /2.20/glibc-2.20-gentoo-chk_fail.c debug/chk_fail.c || die
if use debug ; then
# Allow SIGABRT to dump core on non-hardened systems, or when debug is requested.
sed -i \
-e '/^CFLAGS-backtrace.c/ iCPPFLAGS-stack_chk_fail.c = -DSSP_SMASH_DUMPS_CORE' \
-e '/^CFLAGS-backtrace.c/ iCPPFLAGS-chk_fail.c = -DSSP_SMASH_DUMPS_CORE' \
debug/Makefile || die
fi
# Build various bits with ssp-all
sed -i \
-e 's:-fstack-protector$:-fstack-protector-all:' \
*/Makefile || die
fi
case $( gcc-fullversion) in
4.8.[ 0-3] | 4.9.0)
eerror "You need to switch to a newer compiler; gcc-4.8.[0-3] and gcc-4.9.0 miscompile"
eerror "glibc. See https://bugs.gentoo.org/547420 for details."
die "need to switch compilers #547420"
; ;
esac
}