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171 lines
5.9 KiB
171 lines
5.9 KiB
# Copyright 1999-2021 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI="5"
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inherit epatch toolchain-funcs toolchain-glibc
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DESCRIPTION="GNU libc6 (also called glibc2) C library"
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HOMEPAGE="https://www.gnu.org/software/libc/libc.html"
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LICENSE="LGPL-2.1+ BSD HPND ISC inner-net rc PCRE"
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KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~s390 sparc x86"
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EMULTILIB_PKG="true"
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# Configuration variables
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RELEASE_VER=""
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case ${PV} in
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9999*)
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EGIT_REPO_URIS="https://sourceware.org/git/glibc.git"
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inherit git-r3
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;;
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*)
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RELEASE_VER=${PV}
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;;
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esac
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GCC_BOOTSTRAP_VER="4.7.3-r1"
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# patches live at https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo/src/patchsets/glibc/
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PATCH_VER="15" # Gentoo patchset
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: ${NPTL_KERN_VER:="2.6.32"} # min kernel version nptl requires
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GLIBC_PATCH_EXCLUDE+=" 0005_all_sys-types.h-drop-sys-sysmacros.h-include.patch"
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IUSE="audit caps debug gd hardened multilib nscd +rpc selinux systemtap profile suid vanilla headers-only"
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# Here's how the cross-compile logic breaks down ...
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# CTARGET - machine that will target the binaries
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# CHOST - machine that will host the binaries
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# CBUILD - machine that will build the binaries
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# If CTARGET != CHOST, it means you want a libc for cross-compiling.
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# If CHOST != CBUILD, it means you want to cross-compile the libc.
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# CBUILD = CHOST = CTARGET - native build/install
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# CBUILD != (CHOST = CTARGET) - cross-compile a native build
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# (CBUILD = CHOST) != CTARGET - libc for cross-compiler
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# CBUILD != CHOST != CTARGET - cross-compile a libc for a cross-compiler
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# For install paths:
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# CHOST = CTARGET - install into /
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# CHOST != CTARGET - install into /usr/CTARGET/
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export CBUILD=${CBUILD:-${CHOST}}
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export CTARGET=${CTARGET:-${CHOST}}
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if [[ ${CTARGET} == ${CHOST} ]] ; then
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if [[ ${CATEGORY} == cross-* ]] ; then
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export CTARGET=${CATEGORY#cross-}
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fi
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fi
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# Note [Disable automatic stripping]
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# Disabling automatic stripping for a few reasons:
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# - portage's attempt to strip breaks non-native binaries at least on
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# arm: bug #697428
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# - portage's attempt to strip libpthread.so.0 breaks gdb thread
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# enumeration: bug #697910. This is quite subtle:
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# * gdb uses glibc's libthread_db-1.0.so to enumerate threads.
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# * libthread_db-1.0.so needs access to libpthread.so.0 local symbols
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# via 'ps_pglobal_lookup' symbol defined in gdb.
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# * 'ps_pglobal_lookup' uses '.symtab' section table to resolve all
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# known symbols in 'libpthread.so.0'. Specifically 'nptl_version'
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# (unexported) is used to sanity check compatibility before enabling
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# debugging.
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# 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
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# * normal 'strip' command trims '.symtab'
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# Thus our main goal here is to prevent 'libpthread.so.0' from
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# losing it's '.symtab' entries.
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# As Gentoo's strip does not allow us to pass less aggressive stripping
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# options and does not check the machine target we disable stripping
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# entirely.
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RESTRICT=strip
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is_crosscompile() {
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[[ ${CHOST} != ${CTARGET} ]]
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}
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# Why SLOT 2.2 you ask yourself while sippin your tea ?
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# Everyone knows 2.2 > 0, duh.
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SLOT="2.2"
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# General: We need a new-enough binutils/gcc to match upstream baseline.
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# arch: we need to make sure our binutils/gcc supports TLS.
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COMMON_DEPEND="
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nscd? ( selinux? (
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audit? ( sys-process/audit )
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caps? ( sys-libs/libcap )
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) )
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suid? ( caps? ( sys-libs/libcap ) )
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selinux? ( sys-libs/libselinux )
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systemtap? ( dev-util/systemtap )
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"
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DEPEND="${COMMON_DEPEND}
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>=app-misc/pax-utils-0.1.10
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"
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RDEPEND="${COMMON_DEPEND}
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sys-apps/gentoo-functions"
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if [[ ${CATEGORY} == cross-* ]] ; then
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DEPEND+=" !headers-only? (
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>=${CATEGORY}/binutils-2.24
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>=${CATEGORY}/gcc-4.7
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)"
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[[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
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else
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DEPEND+="
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>=sys-devel/binutils-2.24
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>=sys-devel/gcc-4.7
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virtual/os-headers"
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RDEPEND+=" vanilla? ( !sys-libs/timezone-data )"
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PDEPEND+=" !vanilla? ( sys-libs/timezone-data )"
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fi
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upstream_uris() {
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echo mirror://gnu/glibc/$1 ftp://sourceware.org/pub/glibc/{releases,snapshots}/$1 mirror://gentoo/$1
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}
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gentoo_uris() {
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local devspace="HTTP~vapier/dist/URI HTTP~dilfridge/distfiles/URI HTTP~tamiko/distfiles/URI HTTP~slyfox/distfiles/URI"
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devspace=${devspace//HTTP/https://dev.gentoo.org/}
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echo mirror://gentoo/$1 ${devspace//URI/$1}
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}
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SRC_URI=$(
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[[ -z ${EGIT_REPO_URIS} ]] && upstream_uris ${P}.tar.xz
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[[ -n ${PATCH_VER} ]] && gentoo_uris ${P}-patches-${PATCH_VER}.tar.bz2
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)
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SRC_URI+=" ${GCC_BOOTSTRAP_VER:+multilib? ( $(gentoo_uris gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2) )}"
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src_unpack() {
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[[ -n ${GCC_BOOTSTRAP_VER} ]] && use multilib && unpack gcc-${GCC_BOOTSTRAP_VER}-multilib-bootstrap.tar.bz2
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toolchain-glibc_src_unpack
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}
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src_prepare() {
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toolchain-glibc_src_prepare
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cd "${S}"
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epatch "${FILESDIR}"/2.19/${PN}-2.19-ia64-gcc-4.8-reloc-hack.patch #503838
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if use hardened ; then
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# We don't enable these for non-hardened as the output is very terse --
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# it only states that a crash happened. The default upstream behavior
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# includes backtraces and symbols.
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einfo "Installing Hardened Gentoo SSP and FORTIFY_SOURCE handler"
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cp "${FILESDIR}"/2.20/glibc-2.20-gentoo-stack_chk_fail.c debug/stack_chk_fail.c || die
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cp "${FILESDIR}"/2.25/glibc-2.25-gentoo-chk_fail.c debug/chk_fail.c || die
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if use debug ; then
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# Allow SIGABRT to dump core on non-hardened systems, or when debug is requested.
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sed -i \
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-e '/^CFLAGS-backtrace.c/ iCPPFLAGS-stack_chk_fail.c = -DSSP_SMASH_DUMPS_CORE' \
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-e '/^CFLAGS-backtrace.c/ iCPPFLAGS-chk_fail.c = -DSSP_SMASH_DUMPS_CORE' \
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debug/Makefile || die
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fi
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fi
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case $(gcc-fullversion) in
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4.8.[0-3]|4.9.0)
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eerror "You need to switch to a newer compiler; gcc-4.8.[0-3] and gcc-4.9.0 miscompile"
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eerror "glibc. See https://bugs.gentoo.org/547420 for details."
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die "need to switch compilers #547420"
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;;
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esac
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}
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