# 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-2.2.5-r9.ebuild,v 1.12 2004/08/28 01:28:40 vapier Exp $

inherit flag-o-matic gcc eutils

# 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)
do_filter_flags() {
	strip-flags

	filter-flags -fomit-frame-pointer -malign-double

	# Sparc support
	replace-flags "-mcpu=ultrasparc" "-mcpu=v8 -mtune=ultrasparc"
	replace-flags "-mcpu=v9" "-mcpu=v8 -mtune=v9"

	# Lock glibc at -O2 -- linuxthreads needs it and we want to be conservative here
	filter-flags -O?
	append-flags -O2
}

DESCRIPTION="GNU libc6 (also called glibc2) C library"
HOMEPAGE="http://www.gnu.org/software/libc/libc.html"
SRC_URI="ftp://sources.redhat.com/pub/glibc/releases/glibc-${PV}.tar.bz2
	 ftp://sources.redhat.com/pub/glibc/releases/glibc-linuxthreads-${PV}.tar.bz2"

LICENSE="LGPL-2"
SLOT="2.2"
KEYWORDS="x86 ppc sparc alpha"
IUSE="nls pic build debug"
RESTRICT="nostrip" # we'll handle stripping ourself #46186

# Portage-1.8.9 needed for smart library merging feature (avoids segfaults on glibc upgrade)
# drobbins, 18 Mar 2002: we now rely on the system profile to select the correct linus-headers
DEPEND="virtual/os-headers
	nls? ( sys-devel/gettext )"
RDEPEND="virtual/os-headers
	sys-apps/baselayout
	nls? ( sys-devel/gettext )
	build? ( >=sys-apps/portage-1.9.0 )"
PROVIDE="virtual/glibc virtual/libc"

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

	return 0
}

src_unpack() {
	unpack glibc-${PV}.tar.bz2 || die
	cd ${S}

	# Security
	# Fix for http://www.cert.org/advisories/CA-2003-10.html
	EPATCH_SINGLE_MSG="Applying glibc-xdr_security.patch" \
		epatch ${FILESDIR}/glibc-xdr_security.patch

	#extract pre-made man pages.  Otherwise we need perl, which is a no-no.
	mkdir man; cd man
	tar xjf ${FILESDIR}/glibc-manpages-${PV}.tar.bz2 > /dev/null || die
	cd ${S}
	unpack glibc-linuxthreads-${PV}.tar.bz2 || die

	# This patch apparently eliminates compiler warnings for some versions of gcc.
	# For information about the string2 patch, see:
	# http://lists.gentoo.org/pipermail/gentoo-dev/2001-June/001559.html
	cd ${S}
	EPATCH_SINGLE_MSG="Applying string2.h patch..." \
		epatch ${FILESDIR}/glibc-2.2.4-string2.h.diff

	# This next one is a new patch to fix thread signal handling.  See:
	# http://sources.redhat.com/ml/libc-hacker/2002-02/msg00120.html
	# (Added by drobbins on 05 Mar 2002)
	EPATCH_SINGLE_MSG="Applying threadsig patch..." \
		epatch ${FILESDIR}/${PV}/${P}-threadsig.diff

	# This next patch fixes a test that will timeout due to ReiserFS' slow handling of sparse files
	cd ${S}/io
	EPATCH_SINGLE_MSG="Applying test-lfs-timeout patch..." \
		epatch ${FILESDIR}/glibc-2.2.2-test-lfs-timeout.patch

	# A buffer overflow vulnerability exists in multiple implementations of DNS
	# resolver libraries.  This affects glibc-2.2.5 and earlier. See bug #4923
	# and:
	#
	#   http://www.cert.org/advisories/CA-2002-19.html
	cd ${S}
	EPATCH_SINGLE_MSG="Applying dns-network-overflow patch..." \
		epatch ${FILESDIR}/${PV}/${P}-dns-network-overflow.diff

	# Security update for sunrpc
	# <aliz@gentoo.org>
	cd ${S}
	EPATCH_SINGLE_MSG="Applying sunrpc-overflow patch..." \
		epatch ${FILESDIR}/${PV}/${P}-sunrpc-overflow.diff

	if [ "${ARCH}" = "x86" -o "${ARCH}" = "ppc" ]; then
		# This patch fixes the nvidia-glx probs, openoffice and vmware probs and such..
		# http://sources.redhat.com/ml/libc-hacker/2002-02/msg00152.html
		cd ${S}
		EPATCH_SINGLE_MSG="Applying divdi3 patch..." \
			epatch ${FILESDIR}/${PV}/${P}-divdi3.diff
	fi

	# A bug in the getgrouplist function can cause a buffer overflow if
	# the size of the group list is too small to hold all the user's groups.
	#
	#  https://rhn.redhat.com/errata/RHSA-2003-325.html
	cd ${S}
	EPATCH_SINGLE_MSG="Applying getgrouplist patch..." \
		epatch ${FILESDIR}/${PV}/${P}-getgrouplist.patch

	if [ "${ARCH}" = "ppc" ]; then
		# This patch fixes the absence of sqrtl on PPC
		# http://sources.redhat.com/ml/libc-hacker/2002-05/msg00012.html
		cd ${S}
		EPATCH_SINGLE_MSG="Applying ppc-sqrtl patch..."
			epatch ${FILESDIR}/${PV}/${P}-ppc-sqrtl.diff
	fi

	# Some gcc-3.1.1 fixes.  This works fine for other versions of gcc as well,
	# and should generally be ok, as it just fixes define order that causes scope
	# problems with gcc-3.1.1.
	# (Azarah, 14 Jul 2002)
	cd ${S}
	EPATCH_SINGLE_MSG="Applying gcc311 patch..." \
		epatch ${FILESDIR}/${PV}/${P}-gcc311.patch

	if [ "`gcc-major-version`" -eq "3" -a "`gcc-minor-version`" -ge "2" ]; then
		cd ${S}
		# http://archive.linuxfromscratch.org/mail-archives/lfs-dev/2002/08/0228.html
		# <azarah@gentoo.org> (13 Oct 2002)
		EPATCH_SINGLE_MSG="Applying divbyzero patch..." \
			epatch ${FILESDIR}/${PV}/${P}.divbyzero.patch
		einfo "Applying restrict_arr patch..."
			epatch ${FILESDIR}/${PV}/${P}.restrict_arr.patch
	fi

	# Some patches to fixup build on alpha
	if [ "${ARCH}" = "alpha" ]; then
		cd ${S}
		EPATCH_SINGLE_MSG="Applying alpha-gcc3-fix patch..." \
			epatch ${FILESDIR}/${PV}/${P}-alpha-gcc3-fix.diff
		EPATCH_SINGLE_MSG="Applying alpha-pcdyn-fix patch..." \
			epatch ${FILESDIR}/${PV}/${P}-alpha-pcdyn-fix.diff
	fi

	# Some patches to fixup build on sparc
	if use sparc
	then
		cd ${S}

		EPATCH_SINGLE_MSG="Applying sparc-mathinline patch..." \
			epatch ${FILESDIR}/${PV}/${P}-sparc-mathinline.patch

		EPATCH_SINGLE_MSG="Applying sparc-misc patch..." \
			epatch ${FILESDIR}/${PV}/${P}-sparc-misc.diff

		if [ "${PROFILE_ARCH}" = "sparc64" ]
		then
			EPATCH_SINGLE_MSG="Applying seemant's -fixups patch..." \
				epatch ${FILESDIR}/${PV}/${P}-sparc64-fixups.diff
		fi

		EPATCH_SINGLE_MSG="Applying nall's sparc32-semctl patch..." \
			epatch ${FILESDIR}/${PV}/${P}-sparc32-semctl.patch
	fi

	# Some patches to fixup build on arm
	if [ "${ARCH}" = "arm" ]; then
		cd ${S}
		EPATCH_SINGLE_MSG="Applying ARM sysdep patch..." \
			epatch ${FILESDIR}/${PV}/${P}-arm-sysdeps-fix.diff
		EPATCH_SINGLE_MSG="Applying ARM errlist patch..." \
			epatch ${FILESDIR}/${PV}/${P}-arm-errlist-fix.diff
	fi
}

src_compile() {
	do_filter_flags

	local myconf=""

	# If we build for the build system we use the kernel headers from the target
	use build && myconf="${myconf} --with-headers=${ROOT}usr/include"

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

	einfo "Configuring GLIBC..."
	rm -rf buildhere
	mkdir buildhere
	cd buildhere
	../configure \
		--host=${CHOST} \
		--with-gd=no \
		--without-cvs \
		--enable-add-ons=linuxthreads \
		--disable-profile \
		--prefix=/usr \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--libexecdir=/usr/lib/misc \
		${myconf} || die
	# This next option breaks the Sun JDK and the IBM JDK
	# We should really keep compatibility with older kernels, anyway
	# --enable-kernel=2.4.0

	einfo "Building GLIBC..."
	make PARALLELMFLAGS="${MAKEOPTS}" || die
	einfo "Doing GLIBC checks..."
	make check
}


src_install() {
	export LC_ALL="C"
	einfo "Installing GLIBC..."
	make PARALLELMFLAGS="${MAKEOPTS}" \
		install_root=${D} \
		install -C buildhere || die
	# now, strip everything but the thread libs #46186
	mkdir ${T}/thread-backup
	mv ${D}/lib/lib{pthread,thread_db}* ${T}/thread-backup/
	env -uRESTRICT prepallstrip
	mv ${T}/thread-backup/* ${D}/lib/

	if ! use build
	then
		einfo "Installing Info pages..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			info -C buildhere || die

		einfo "Installing Locale data..."
		make PARALLELMFLAGS="${MAKEOPTS}" \
			install_root=${D} \
			localedata/install-locales -C buildhere || die

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

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

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

	if use pic
	then
		find ${S}/buildhere -name "soinit.os" -exec cp {} ${D}/lib/soinit.o \;
		find ${S}/buildhere -name "sofini.os" -exec cp {} ${D}/lib/sofini.o \;
		find ${S}/buildhere -name "*_pic.a" -exec cp {} ${D}/lib \;
		find ${S}/buildhere -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 4755 /usr/lib/misc/pt_chown

	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
}

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
}