# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-libs/uclibc/uclibc-0.9.26-r2.ebuild,v 1.2 2004/06/23 18:28:49 solar Exp $

inherit eutils flag-o-matic gcc

MY_P="${P/ucl/uCl}"
DESCRIPTION="C library for developing embedded Linux systems"
HOMEPAGE="http://www.uclibc.org/"
SRC_URI="http://www.kernel.org/pub/linux/libs/uclibc/${MY_P}.tar.bz2"

CVS_VER="20040613"
SRC_URI="${SRC_URI} mirror://gentoo/${MY_P}-cvs-update-${CVS_VER}.patch.bz2"

PATCH_VER="1.1"
SRC_URI="${SRC_URI} mirror://gentoo/${MY_P}-patches-${PATCH_VER}.tar.bz2"

LICENSE="LGPL-2"
SLOT="0"
KEYWORDS="~x86 ~ppc ~sparc ~mips ~arm"
IUSE="build ipv6 uclibc hardened" # nls is not supported yet

DEPEND="sys-devel/gcc"
PROVIDE="virtual/glibc"

S=${WORKDIR}/${MY_P}

check_main_libc() {
	if [ -f /lib/lib${MY_P}.so -a ! -f /lib/libc.so.6 ] ; then
		if echo "${CHOST}" | grep -q uclibc ; then
			retval=0
		else
			retval=1
		fi
	else
		retval=1
	fi
	[ "${retval}" = "0" ] && SYS_LIBC=uClibc || SYS_LIBC=glibc
	echo
	einfo "We are building for ${SYS_LIBC} system library"
	echo
}

src_unpack() {
	unpack ${A}
	cd ${S}

	if [ -n "${CVS_VER}" ]
	then
		epatch ${DISTDIR}/${MY_P}-cvs-update-${CVS_VER}.patch.bz2
		epatch ${FILESDIR}/0.9.26/uClibc-20040613-do_rem.patch
	fi

	cp ${FILESDIR}/0.9.26/ssp.c ${S}/libc/sysdeps/linux/common/ || \
		die "failed to copy ssp.c to ${S}/libc/sysdeps/linux/common/"
	# gcc 3.4 nukes ssp without this patch
	if [ "`gcc-major-version`" -ge "3" -a "`gcc-minor-version`" -ge "4" ]
	then
		epatch ${FILESDIR}/0.9.26/uclibc-0.9.26-ssp-gcc34-after-frandom.patch
	fi

	if [ -n "${PATCH_VER}" ]
	then
		unpack ${MY_P}-patches-${PATCH_VER}.tar.bz2
		# for now we remove relro/now, no support for relro in ldso
		rm -f ${WORKDIR}/patch/*relro*
		rm -f ${WORKDIR}/patch/*now*
		# remove default ssp build
		use hardened || rm -f ${WORKDIR}/patch/*enable-ssp*
		epatch ${WORKDIR}/patch
	fi

	# support archs which dont implement all syscalls
	[ -z "${CVS_VER}" ] && epatch ${FILESDIR}/${PV}/arm-fix-missing-syscalls.patch || \
		epatch ${FILESDIR}/${PV}/uclibc-0.9.26-arm-dl-sysdep.patch

	# fixup for install perms
	sed -i -e "s:-fa:-dRf:g" Makefile

	local target=""
	if [ "${ARCH}" == "x86" ] ; then
		target="i386"
	elif [ "${ARCH}" == "ppc" ] ; then
		target="powerpc"
	else
		# sparc|mips|alpha|arm|sh
		target="${ARCH}"
	fi
	sed -i \
		-e "s:default TARGET_i386:default TARGET_${target}:" \
		extra/Configs/Config.in
	sed -i \
		-e "s:default CONFIG_GENERIC_386:default CONFIG_${UCLIBC_CPU:-GENERIC_386}:" \
		extra/Configs/Config.${target}

	make defconfig >/dev/null || die "could not config"

	# this could be a debug flag
	for def in UCLIBC_PROFILING DO{DEBUG,ASSERTS} SUPPORT_LD_DEBUG{,_EARLY} ; do
		sed -i -e "s:${def}=y:# ${def} is not set:" .config
	done

	for def in DO_C99_MATH UCLIBC_HAS_{RPC,CTYPE_CHECKED,WCHAR,HEXADECIMAL_FLOATS,GLIBC_CUSTOM_PRINTF,FOPEN_EXCLUSIVE_MODE,GLIBC_CUSTOM_STREAMS,PRINTF_M_SPEC,FTW} ; do
		sed -i -e "s:# ${def} is not set:${def}=y:" .config
	done
	echo "UCLIBC_HAS_FULL_RPC=n" >> .config

	#if use nls
	#then
	#	sed -i -e "s:# UCLIBC_HAS_LOCALE is not set:UCLIBC_HAS_LOCALE=y:" .config
	#	echo "UCLIBC_HAS_XLOCALE=n" >> .config
	#	echo "UCLIBC_HAS_GLIBC_DIGIT_GROUPING=y" >> .config
	#	echo "UCLIBC_HAS_SCANF_LENIENT_DIGIT_GROUPING=y" >> .config
	#	echo "UCLIBC_HAS_GETTEXT_AWARENESS=y" >> .config
	#	# on pax enabled kernels the locale files can't be built
	#	echo "UCLIBC_PREGENERATED_LOCALE_DATA=n" >> .config
	#fi
	# we disable LOCALE for any case, gettext has to be used
	echo "UCLIBC_HAS_LOCALE=n" >> .config

	use ipv6 && sed -i -e "s:# UCLIBC_HAS_IPV6 is not set:UCLIBC_HAS_IPV6=y:" .config

	if use hardened
	then
		if use x86
		then
			einfo "Enable Position Independent Executable support in ${P}"
			sed -i -e "s:# UCLIBC_PIE_SUPPORT.*:UCLIBC_PIE_SUPPORT=y:" .config
		fi

		einfo "Enable Stack Smashing Protections support in ${P}"
		sed -i -e "s:# UCLIBC_PROPOLICE.*:UCLIBC_PROPOLICE=y:" .config
		echo "PROPOLICE_BLOCK_ABRT=n" >> .config
		echo "PROPOLICE_BLOCK_SEGV=n" >> .config
		echo "PROPOLICE_BLOCK_KILL=y" >> .config
	fi

	# we are building against system installed kernel headers
	sed -i -e 's:KERNEL_SOURCE.*:KERNEL_SOURCE="/usr":' .config

	check_main_libc
	if [ "${SYS_LIBC}" = "uClibc" ]
	then
		sed -i -e 's:SHARED_LIB_LOADER_PREFIX=.*:SHARED_LIB_LOADER_PREFIX="/lib":' .config
		sed -i -e 's:DEVEL_PREFIX=.*:DEVEL_PREFIX="/usr":' .config
		sed -i -e 's:RUNTIME_PREFIX=.*:RUNTIME_PREFIX="/":' .config
	fi

	make -s oldconfig > /dev/null || die "could not make oldconfig"

	chmod +x extra/scripts/relative_path.sh

	cp .config myconfig

	emake clean >/dev/null || die "could not clean"
}

src_compile() {
	# running tests require this
	use build || addwrite /dev/ptmx
	mv myconfig .config

	#if use nls
	#then
	#	# these can be built only if the build system supports locales (as of 0.9.26)
	#	emake -j1 headers
	#	cd extra/locale
	#	make clean
	#	find ./charmaps -name "*.pairs" > codesets.txt
	#	cp LOCALES locales.txt
	#	emake -j1 || die "could not make locales"
	#	cd ../..
	#fi

	emake -j1 || die "could not make"
	if ! use build
	then
		if [ "${SYS_LIBC}" = "uClibc" ]
		then
			emake -j1 utils || die "could not make utils"
		fi
		# assert test fails on pax enabled kernels - normal
		# vfork test fails in sandbox
		cd test; make; cd ..
	fi
}

src_install() {
	emake PREFIX=${D} install || die "install failed"

	# remove files coming from kernel-headers
	# scsi is uclibc's own directory since cvs 20040212
	if [ "${SYS_LIBC}" = "uClibc" ]
	then
		rm -rf ${D}/usr/include/{asm,linux}
	fi

	rm -f ${D}/usr/lib/lib*_pic.a

	if ! use build
	then
		if [ "${SYS_LIBC}" = "uClibc" ]
		then
			emake PREFIX=${D} install_utils || die "install-utils failed"
			dodir /usr/bin
			exeinto /usr/bin
			doexe ${FILESDIR}/getent
		fi
		dodoc Changelog* README TODO docs/*.txt
		doman debian/*.1
	fi
}

#pkg_postinst() {
#if [ "${SYS_LIBC}" = "uClibc" ] ; then
#	if [ "${ROOT}" = "/" ] ; then
#		/sbin/ldconfig
#		[ ! -e /etc/TZ ] && echo UTC > /etc/TZ
#		# reload init?
#	fi
#else
#should we add the lib dir to ld.so.conf?
#fi
#}