# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-libs/glibc/glibc-2.3.4.20040605.ebuild,v 1.26 2004/08/05 23:59:53 vapier Exp $

IUSE="nls pic build nptl erandom hardened makecheck multilib debug"

inherit eutils flag-o-matic gcc

# make check will fail if sandbox is enabled
export SANDBOX_DISABLED="1"

# Recently there has been a lot of stability problem in Gentoo-land.  Many
# things can be the cause to this, but I believe that it is due to gcc3
# still having issues with optimizations, or with it not filtering bad
# combinations (protecting the user maybe from himeself) yet.
#
# This can clearly be seen in large builds like glibc, where too aggressive
# CFLAGS cause the tests to fail miserbly.
#
# Quote from Nick Jones <carpaski@gentoo.org>, who in my opinion
# knows what he is talking about:
#
#   People really shouldn't force code-specific options on... It's a
#   bad idea. The -march options aren't just to look pretty. They enable
#   options that are sensible (and include sse,mmx,3dnow when apropriate).
#
# The next command strips CFLAGS and CXXFLAGS from nearly all flags.  If
# you do not like it, comment it, but do not bugreport if you run into
# problems.
#
# <azarah@gentoo.org> (13 Oct 2002)
strip-flags
strip-unsupported-flags

# Lock glibc at -O2 -- linuxthreads needs it and we want to be conservative here
export CFLAGS="${CFLAGS//-O?} -O2"
export CXXFLAGS="${CFLAGS}"
export LDFLAGS="${LDFLAGS//-Wl,--relax}"

DESCRIPTION="GNU libc6 (also called glibc2) C library"
SRC_URI="http://dev.gentoo.org/~lv/${P}.tar.bz2
		 http://dev.gentoo.org/~lv/glibc-infopages-2.3.4.tar.bz2"
HOMEPAGE="http://sources.redhat.com/glibc/"

#KEYWORDS="~x86 ~mips ~sparc ~amd64 -hppa ~ia64 ~ppc" # breaks on ~alpha
#KEYWORDS="-* ~amd64 ppc64"
# yanking ~amd64 due to repoman bugs.. plz add back later.
KEYWORDS="-* ppc64 amd64"

SLOT="2.2"
LICENSE="LGPL-2"

# We need new cleanup attribute support from gcc for NPTL among things ...
# We also need linux-headers-2.6.6 if using NPTL. Including kernel headers is
# incredibly unreliable, and this new linux-headers release from plasmaroo
# should work with userspace apps, at least on amd64 and ppc64.
DEPEND=">=sys-devel/gcc-3.2.3-r1
	nptl? ( >=sys-devel/gcc-3.3.1-r1 )
	>=sys-devel/binutils-2.14.90.0.6-r1
	virtual/os-headers
	nptl? ( =sys-kernel/linux26-headers-2.6* )
	nls? ( sys-devel/gettext )"
RDEPEND="virtual/os-headers
	sys-apps/baselayout
	nls? ( sys-devel/gettext )"

PROVIDE="virtual/glibc virtual/libc"

# theoretical x-compiler support
[ -z "${CCHOST}" ] && CCHOST="${CHOST}"

# We need to be able to set alternative headers for
# compiling for non-native platform
# Will also come useful for testing kernel-headers without screwing up
# whole system
[ -z "${ALT_HEADERS}" ] && ALT_HEADERS="/usr/include"

setup_flags() {
	# -freorder-blocks for all but ia64 s390 s390x
	use ppc || append-flags "-freorder-blocks"

	# Sparc/Sparc64 support
	if use sparc
	then

		# Both sparc and sparc64 can use -fcall-used-g6.  -g7 is bad, though.
		replace-flags "-fcall-used-g7" ""
		append-flags "-fcall-used-g6"

		# Sparc64 Only support...
		if [ "${PROFILE_ARCH}" = "sparc64" ]
		then

			# Get rid of -mcpu options, the CHOST will fix this up
			replace-flags "-mcpu=ultrasparc" ""
			replace-flags "-mcpu=v9" ""

			# Get rid of flags known to fail
			replace-flags "-mvis" ""

			# Setup the CHOST properly to insure "sparcv9"
			# This passes -mcpu=ultrasparc -Wa,-Av9a to the compiler
			if [ "${CHOST}" = "sparc-unknown-linux-gnu" ]; then
				export CHOST="sparcv9-unknown-linux-gnu"
				export CCHOST="sparcv9-unknown-linux-gnu"
			fi
		fi
	fi

	# temporary fix for a few gcc 3.4 related problems
	# note: the problem this fixes should no longer exist as of gcc
	# 3.4.0-r6. i'll keep this around for a short time longer since not
	# everyone recompiles their compiler at every upgrade...
	if [ "`gcc-major-version`" -ge "3" -a "`gcc-minor-version`" -ge "4" ]
	then
		filter-flags -funit-at-a-time
		append-flags -fno-unit-at-a-time
	fi

}

want_nptl() {
	(use amd64 || use ppc || use ppc64 || use sparc || use s390 || \
		use ia64 || use alpha) && return 0
	use x86 && if [ "${CHOST/-*}" = "i486" -o "${CHOST/-*}" = "i586" -o \
		"${CHOST/-*}" = "i686" ] ; then return 0 ; fi
	return 1
}

want_tls() {
	(use amd64 || use ia64 || use s390 || use alpha || use sparc || \
		use ppc || use ppc64 || use x86) && return 0
	return 1
}

do_makecheck() {
	ATIME=`mount | awk '{ print $3,$6 }' | grep ^\/\  | grep noatime`
	if [ "$ATIME" = "" ]
	then
		cd ${WORKDIR}/build
		make check || die
	else
		ewarn "remounting / without noatime option so that make check"
		ewarn "does not fail!"
		sleep 2
		mount / -o remount,atime
		cd ${WORKDIR}/build
		make check || die
		einfo "remounting / with noatime"
		mount / -o remount,noatime
	fi
}

install_locales() {
	unset LANGUAGE LANG LC_ALL
	cd ${WORKDIR}/build
	make PARALLELMFLAGS="${MAKEOPTS}" \
		install_root=${D} localedata/install-locales || die
	keepdir /usr/lib/locale/ru_RU/LC_MESSAGES
}

setup_locales() {
	if (use nls || use makecheck)
	then
		einfo "nls or makecheck in USE, installing -ALL- locales..."
		install_locales
	elif [ -e /etc/locales.build ]
	then
		einfo "Installing locales in /etc/locales.build..."
		echo 'SUPPORTED-LOCALES=\' > SUPPORTED.locales
		cat /etc/locales.build | grep -v -e ^$ -e ^\# | sed 's/$/\ \\/g' \
			>> SUPPORTED.locales
		cat SUPPORTED.locales > ${S}/localedata/SUPPORTED || die
		install_locales || die
	elif [ -e ${FILESDIR}/locales.build ]
	then
		einfo "Installing locales in ${FILESDIR}/locales.build..."
		echo 'SUPPORTED-LOCALES=\' > SUPPORTED.locales
		cat ${FILESDIR}/locales.build | grep -v -e ^$ -e ^\# | sed 's/$/\ \\/g' \
			>> SUPPORTED.locales
		cat SUPPORTED.locales > ${S}/localedata/SUPPORTED || die
		install_locales || die
	else
		einfo "Installing -ALL- locales..."
		install_locales || die
	fi
}

pkg_setup() {
	# Check if we are going to downgrade, we don't like that
	local old_version

	old_version="`best_version glibc`"
	old_version="${old_version/sys-libs\/glibc-/}"

	if [ "$old_version" ]; then
		if [ `python -c "import portage; print int(portage.vercmp(\"${PV}\",\"$old_version\"))"` -lt 0 ]; then
			if [ "${FORCE_DOWNGRADE}" ]; then
				ewarn "downgrading glibc, still not recommended, but we'll do as you wish"
			else
				eerror "Downgrading glibc is not supported and we strongly recommend that"
				eerror "you don't do it as it WILL break all applications compiled against"
				eerror "the new version (most likely including python and portage)."
				eerror "If you are REALLY sure that you want to do it set "
				eerror "     FORCE_DOWNGRADE=1"
				eerror "when you try it again."
				die "glibc downgrade"
			fi
		fi
	fi

	# We need gcc 3.2 or later ...
	if [ "`gcc-major-version`" -ne "3" -o "`gcc-minor-version`" -lt "2" ]
	then
		echo
		eerror "As of glibc-2.3, gcc-3.2 or later is needed"
		eerror "for the build to succeed."
		die "GCC too old"
	fi

	echo

	if want_nptl
	then
		einfon "Checking gcc for __thread support ... "
		if ! gcc -c ${FILESDIR}/test-__thread.c -o ${T}/test2.o &> /dev/null
		then
			echo "no"
			echo
			eerror "Could not find a gcc that supports the __thread directive!"
			eerror "please update to gcc-3.2.2-r1 or later, and try again."
			die "No __thread support in gcc!"
		else
			echo "yes"
		fi

	elif use nptl &> /dev/null
	then
		echo
		# Just tell the user not to expect too much ...
		ewarn "You have \"nptl\" in your USE, but your kernel version or"
		ewarn "architecture does not support it!"
	fi

	echo
}

src_unpack() {
	unpack ${A}

	# version patch
	cd ${S}
	einfo "patching version to display snapshot date"
	sed -i -e "s/stable/2004-06-05/" -e "s/2\.3\.3/2.3.4/" version.h

	# Extract pre-made man pages.  Otherwise we need perl, which is a no-no.
	mkdir -p ${S}/man; cd ${S}/man
	tar xjf ${FILESDIR}/glibc-manpages-2.3.2.tar.bz2
	cd ${S} ; unpack glibc-infopages-2.3.4.tar.bz2

	cd ${S}

	# To circumvent problems with propolice __guard and
	# __guard_setup__stack_smash_handler
	#
	#  http://www.gentoo.org/proj/en/hardened/etdyn-ssp.xml
	if [ "${ARCH}" != "hppa" -a "${ARCH}" != "hppa64" ]
	then
		cd ${S}
		epatch ${FILESDIR}/2.3.3/glibc-2.3.2-propolice-guard-functions-v3.patch
		cp ${FILESDIR}/2.3.3/ssp.c ${S}/sysdeps/unix/sysv/linux || \
			die "failed to copy ssp.c to ${S}/sysdeps/unix/sysv/linux/"
	fi

	# patch this regardless of architecture, although it's ssp-related
	epatch ${FILESDIR}/2.3.3/glibc-2.3.3-frandom-detect.patch

	#
	# *** PaX related patches starts here ***
	#

	# localedef contains nested function trampolines, which trigger
	# segfaults under PaX -solar
	# Debian Bug (#231438, #198099)
	epatch ${FILESDIR}/2.3.3/glibc-2.3.3-localedef-fix-trampoline.patch


	# With latest versions of glibc, a lot of apps failed on a PaX enabled
	# system with:
	#
	#  cannot enable executable stack as shared object requires: Permission denied
	#
	# This is due to PaX 'exec-protecting' the stack, and ld.so then trying
	# to make the stack executable due to some libraries not containing the
	# PT_GNU_STACK section.  Bug #32960.  <azarah@gentoo.org> (12 Nov 2003).
	use mips || ( cd ${S}; epatch ${FILESDIR}/2.3.3/${PN}-2.3.3-dl_execstack-PaX-support.patch )

	# Program header support for PaX.
	cd ${S}; epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040117-pt_pax.diff

	# Suppress unresolvable relocation against symbol `main' in Scrt1.o
	# can be reproduced with compiling net-dns/bind-9.2.2-r3 using -pie
	epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040117-got-fix.diff

	#
	# *** PaX related patches ends here ***
	#

	# Sanity check the forward and backward chunk pointers in the
	# unlink() macro used by Doug Lea's implementation of malloc(3).
	cd ${S}; epatch ${FILESDIR}/2.3.3/glibc-2.3.3-owl-malloc-unlink-sanity-check.diff

	# We do not want name_insert() in iconvconfig.c to be defined inside
	# write_output() as it causes issues with trampolines/PaX.
	#cd ${S}; epatch ${FILESDIR}/2.3.2/${PN}-2.3.2-iconvconfig-name_insert.patch

	# A few patches only for the MIPS platform.  Descriptions of what they
	# do can be found in the patch headers.
	# <tuxus@gentoo.org> thx <dragon@gentoo.org> (11 Jan 2003)
	# <kumba@gentoo.org> remove tst-rndseek-mips & ulps-mips patches
	# <iluxa@gentoo.org> add n32/n64 patches, remove pread patch
	if [ "${ARCH}" = "mips" ]
	then
		cd ${S}
		epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-fpu-cw-mips.patch
		epatch ${FILESDIR}/2.3.1/${PN}-2.3.1-librt-mips.patch
		epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040420-mips-dl-machine-calls.diff
		epatch ${FILESDIR}/2.3.3/${PN}-2.3.3_pre20040420-mips-incl-sgidefs.diff
		epatch ${FILESDIR}/2.3.3/mips-addabi.diff
		epatch ${FILESDIR}/2.3.3/mips-syscall.h.diff
		epatch ${FILESDIR}/2.3.3/semtimedop.diff
		epatch ${FILESDIR}/2.3.3/mips-sysify.diff
		epatch ${FILESDIR}/2.3.4/mips-sysdep-cancel.diff
		# Need to install into /lib for n32-only userland for now.
		# Propper solution is to make all userland /lib{32|64}-aware.
		use multilib || epatch ${FILESDIR}/2.3.3/mips-nolib3264.diff
	fi

	if [ "${ARCH}" = "ppc" -o "${ARCH}" = "ppc64" ]
	then
		cd ${S}
		epatch ${FILESDIR}/2.3.4/glibc-2.3.4-nptl-altivec.patch
	fi

	if [ "${ARCH}" = "alpha" ]
	then
		cd ${S}
		# Fix compatability with compaq compilers by ifdef'ing out some
		# 2.3.2 additions.
		# <taviso@gentoo.org> (14 Jun 2003).
		epatch ${FILESDIR}/2.3.2/${PN}-2.3.2-decc-compaq.patch

		# Fix compilation with >=gcc-3.2.3 (01 Nov 2003 agriffis)
#		epatch ${FILESDIR}/2.3.2/${LOCAL_P}-alpha-pwrite.patch
	fi

	if [ "${ARCH}" = "amd64" ]
	then
		cd ${S}; epatch ${FILESDIR}/2.3.2/${PN}-2.3.2-amd64-nomultilib.patch
	fi

	if [ "${ARCH}" = "ia64" ]
	then
		# The basically problem is glibc doesn't store information about
		# what the kernel interface is so that it can't efficiently set up
		# parameters for system calls.  This patch from H.J. Lu fixes it:
		#
		#   http://sources.redhat.com/ml/libc-alpha/2003-09/msg00165.html
		#
		#cd ${S}; epatch ${FILESDIR}/2.3.2/${LOCAL_P}-ia64-LOAD_ARGS-fixup.patch
		:
	fi

	cd ${S}

	# Fix permissions on some of the scripts
	chmod u+x ${S}/scripts/*.sh

	# disable binutils -as-needed
	sed -e 's/^have-as-needed.*/have-as-needed = no/' -i ${S}/config.make.in
	# mandatory, if binutils supports relro and the kernel is pax/grsecurity enabled
	# solves almost all segfaults building the locale files on grsecurity enabled kernels
	use build && sed -e 's/^LDFLAGS-rtld += $(relro.*/LDFLAGS-rtld += -Wl,-z,norelro/' -i ${S}/Makeconfig
	use build || (use hardened && sed -e 's/^LDFLAGS-rtld += $(relro.*/LDFLAGS-rtld += -Wl,-z,norelro/' -i ${S}/Makeconfig)
}

src_compile() {
	setup_flags
	filter-flags "-fomit-frame-pointer -malign-double"
	filter-ldflags "-pie"


	# These should not be set, else the
	# zoneinfo do not always get installed ...
	unset LANGUAGE LANG LC_ALL

	use nls || myconf="${myconf} --disable-nls"

	use erandom || myconf="${myconf} --disable-dev-erandom"

	use hardened && myconf="${myconf} --enable-bind-now"

	if (use nptl && want_nptl && want_tls)
	then
		myconf="${myconf} \
		--enable-add-ons=nptl \
		--with-tls --with-__thread \
		--enable-kernel=2.6.0"
	else
		myconf="${myconf} --enable-add-ons=linuxthreads --without-__thread"
	fi

	# we dont want to enable tls ourselves, as this can cause catalyst to fail
	# for some people on some archs.
	want_tls || myconf="${myconf} --without-tls"

	# some silly people set LD_RUN_PATH and that breaks things.
	# see bug 19043
	unset LD_RUN_PATH

	rm -rf ${WORKDIR}/build
	mkdir -p ${WORKDIR}/build
	cd ${WORKDIR}/build
	${S}/configure \
		--build=${CHOST} \
		--host=${CCHOST} \
		--disable-profile \
		--without-gd \
		--without-cvs \
		--with-headers=${ALT_HEADERS} \
		--prefix=/usr \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--libexecdir=/usr/lib/misc \
		${myconf} || die

	make PARALLELMFLAGS="${MAKEOPTS}" || die
}

src_install() {
	setup_flags

	# These should not be set, else the
	# zoneinfo do not always get installed ...
	unset LANGUAGE LANG LC_ALL

	cd ${WORKDIR}/build

	einfo "Installing GLIBC..."
	make PARALLELMFLAGS="${MAKEOPTS}" \
		install_root=${D} \
		install || die

	# If librt.so is a symlink, change it into linker script (Redhat)
	if [ -L "${D}/usr/lib/librt.so" -a "${LIBRT_LINKERSCRIPT}" = "yes" ]
	then
		local LIBRTSO="`cd ${D}/lib; echo librt.so.*`"
		local LIBPTHREADSO="`cd ${D}/lib; echo libpthread.so.*`"

		rm -f ${D}/usr/lib/librt.so
		cat > ${D}/usr/lib/librt.so <<EOF
/* GNU ld script
	librt.so.1 needs libpthread.so.0 to come before libc.so.6*
	in search scope.  */
EOF
		grep "OUTPUT_FORMAT" ${D}/usr/lib/libc.so >> ${D}/usr/lib/librt.so
		echo "GROUP ( /lib/${LIBPTHREADSO} /lib/${LIBRTSO} )" \
			>> ${D}/usr/lib/librt.so

		for x in ${D}/usr/lib/librt.so.[1-9]
		do
			[ -L "${x}" ] && rm -f ${x}
		done
	fi

	if ! use build
	then
		cd ${WORKDIR}/build

		einfo "Installing Info pages..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			info -i

		setup_locales

		einfo "Installing man pages and docs..."
		# Install linuxthreads man pages
		want_nptl || {
			dodir /usr/share/man/man3
			doman ${S}/man/*.3thr
		}

		# Install nscd config file
		insinto /etc
		doins ${FILESDIR}/nscd.conf

		cd ${S}
		dodoc BUGS ChangeLog* CONFORMANCE COPYING* FAQ INTERFACE \
			NEWS NOTES PROJECTS README*
	else
		rm -rf ${D}/usr/share ${D}/usr/lib/gconv

		einfo "Installing Timezone data..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			timezone/install-others -C ${WORKDIR}/build || die
	fi

	if (use pic && use !amd64)
	then
		find ${S}/${buildtarget}/ -name "soinit.os" -exec cp {} ${D}/lib/soinit.o \;
		find ${S}/${buildtarget}/ -name "sofini.os" -exec cp {} ${D}/lib/sofini.o \;
		find ${S}/${buildtarget}/ -name "*_pic.a" -exec cp {} ${D}/lib \;
		find ${S}/${buildtarget}/ -name "*.map" -exec cp {} ${D}/lib \;
		for i in ${D}/lib/*.map
		do
			mv ${i} ${i%.map}_pic.map
		done
	fi

	# Is this next line actually needed or does the makefile get it right?
	# It previously has 0755 perms which was killing things.
	fperms 4711 /usr/lib/misc/pt_chown

	# Currently libraries in  /usr/lib/gconv do not get loaded if not
	# in search path ...
#	insinto /etc/env.d
#	doins ${FILESDIR}/03glibc

	rm -f ${D}/etc/ld.so.cache

	# Prevent overwriting of the /etc/localtime symlink.  We'll handle the
	# creation of the "factory" symlink in pkg_postinst().
	rm -f ${D}/etc/localtime

	# Some things want this, notably ash.
	dosym /usr/lib/libbsd-compat.a /usr/lib/libbsd.a

	# This is our new config file for building locales
	insinto /etc
	doins ${FILESDIR}/locales.build

	use makecheck && do_makecheck
}

pkg_postinst() {
	# Correct me if I am wrong here, but my /etc/localtime is a file
	# created by zic ....
	# I am thinking that it should only be recreated if no /etc/localtime
	# exists, or if it is an invalid symlink.
	#
	# For invalid symlink:
	#   -f && -e  will fail
	#   -L will succeed
	#
	if [ ! -e ${ROOT}/etc/localtime ]
	then
		echo "Please remember to set your timezone using the zic command."
		rm -f ${ROOT}/etc/localtime
		ln -s ../usr/share/zoneinfo/Factory ${ROOT}/etc/localtime
	fi

	if [ -x ${ROOT}/usr/sbin/iconvconfig ]
	then
		# Generate fastloading iconv module configuration file.
		${ROOT}/usr/sbin/iconvconfig --prefix=${ROOT}
	fi

	if [ ! -e "${ROOT}/ld.so.1" ] && use ppc64
	then
		pushd ${ROOT}
		cd ${ROOT}/lib
		ln -s ld64.so.1 ld.so.1
		popd
	fi

	# Reload init ...
	if [ "${ROOT}" = "/" ]
	then
		/sbin/init U &> /dev/null
	fi
}