sys-libs/uclibc/uclibc-0.9.28.3-r8.ebuild - chromiumos/overlays/portage - Git at Google

 # Copyright 1999-2010 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Header: /var/cvsroot/gentoo-x86/sys-libs/uclibc/uclibc-0.9.28.3-r8.ebuild,v 1.6 2010/01/18 23:41:46 solar Exp $

 #ESVN_REPO_URI="svn://uclibc.org/trunk/uClibc"
 #inherit subversion
 inherit eutils flag-o-matic toolchain-funcs

 export CBUILD=${CBUILD:-${CHOST}}
 export CTARGET=${CTARGET:-${CHOST}}
 if [[ ${CTARGET} == ${CHOST} ]] ; then
 	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
 		export CTARGET=${CATEGORY/cross-}
 	fi
 fi
 # Handle the case where we want uclibc on glibc ...
 if [[ ${CTARGET} == ${CHOST} ]] && [[ ${CHOST} != *-uclibc ]] ; then
 	export UCLIBC_AND_GLIBC="sitting in a tree"
 	export CTARGET=${CHOST%%-*}-pc-linux-uclibc
 fi

 MY_P=uClibc-${PV}
 SVN_VER=""
 PATCH_VER="1.9"
 DESCRIPTION="C library for developing embedded Linux systems"
 HOMEPAGE="http://www.uclibc.org/"
 SRC_URI="mirror://kernel/linux/libs/uclibc/${MY_P}.tar.bz2
 	http://uclibc.org/downloads/${MY_P}.tar.bz2
 	nls? ( !userlocales? ( pregen? (
 		x86? ( http://www.uclibc.org/downloads/uClibc-locale-030818.tgz )
 	) ) )"
 [[ -z ${SVN_VER} ]] || \
 	SRC_URI="${SRC_URI} mirror://gentoo/${MY_P}-svn-update-${SVN_VER}.patch.bz2"
 [[ -z ${PATCH_VER} ]] || \
 	SRC_URI="${SRC_URI} mirror://gentoo/${MY_P}-patches-${PATCH_VER}.tar.bz2"

 LICENSE="LGPL-2"
 [[ ${CTARGET} != ${CHOST} ]] \
 	&& SLOT="${CTARGET}" \
 	|| SLOT="0"
 KEYWORDS="-* arm m68k -mips ppc sh ~sparc x86"
 IUSE="build elibc_uclibc uclibc-compat debug hardened iconv ipv6 minimal nls pregen savedconfig userlocales wordexp crosscompile_opts_headers-only"
 RESTRICT="strip"

 RDEPEND=""
 PROVIDE="elibc_uclibc? ( virtual/libc )"
 if [[ ${CTARGET} == ${CHOST} ]] ; then
 	DEPEND="virtual/os-headers app-misc/pax-utils"
 else
 	DEPEND=""
 fi

 S=${WORKDIR}/${MY_P}

 alt_build_kprefix() {
 	if [[ ${CBUILD} == ${CHOST} && ${CTARGET} == ${CHOST} ]] \
 	   || [[ -n ${UCLIBC_AND_GLIBC} ]]
 	then
 		echo /usr
 	else
 		echo /usr/${CTARGET}/usr
 	fi
 }
 just_headers() {
 	use crosscompile_opts_headers-only && [[ ${CHOST} != ${CTARGET} ]]
 }

 uclibc_endian() {
 	# XXX: this wont work for a toolchain which is bi-endian, but we
 	#      dont have any such thing at the moment, so not a big deal
 	touch "${T}"/endian.s
 	$(tc-getAS ${CTARGET}) "${T}"/endian.s -o "${T}"/endian.o
 	case $(file "${T}"/endian.o) in
 		*" MSB "*) echo "big";;
 		*" LSB "*) echo "little";;
 		*)         echo "NFC";;
 	esac
 	rm -f "${T}"/endian.{s,o}
 }

 pkg_setup() {
 	just_headers && return 0
 	has_version ${CATEGORY}/uclibc || return 0
 	[[ -n ${UCLIBC_AND_GLIBC} ]] && return 0
 	[[ ${ROOT} != "/" ]] && return 0
 	[[ ${CATEGORY} == cross-* ]] && return 0

 	if ! built_with_use --missing false ${CATEGORY}/uclibc nls && use nls && ! use pregen ; then
 		eerror "You previously built uclibc with USE=-nls."
 		eerror "You cannot generate locale data with this"
 		eerror "system.  Please rerun emerge with USE=pregen."
 		die "host cannot support locales"
 	elif built_with_use --missing false ${CATEGORY}/uclibc nls && ! use nls ; then
 		eerror "You previously built uclibc with USE=nls."
 		eerror "Rebuilding uClibc with USE=-nls will prob"
 		eerror "destroy your system."
 		die "switching from nls is baaaad"
 	fi
 }

 PIE_STABLE="arm mips ppc x86"

 CPU_ALPHA=""
 CPU_AMD64=""
 CPU_ARM="GENERIC_ARM ARM{610,710,720T,920T,922T,926T,_{SA110,SA1100,XSCALE}}"
 CPU_IA64=""
 CPU_M68K=""
 CPU_MIPS="MIPS_ISA_{1,2,3,4,MIPS{32,64}}"
 CPU_PPC=""
 CPU_SH="SH{2,3,4,5}"
 CPU_SPARC=""
 CPU_X86="GENERIC_386 {3,4,5,6}86 586MMX PENTIUM{II,III,4} K{6,7} ELAN CRUSOE WINCHIP{C6,2} CYRIXIII NEHEMIAH"
 IUSE_UCLIBC_CPU="${CPU_ARM} ${CPU_MIPS} ${CPU_PPC} ${CPU_SH} ${CPU_SPARC} ${CPU_X86}"

 check_cpu_opts() {
 	local cpu_var="CPU_$(echo $(tc-arch) | tr [a-z] [A-Z])"
 	[[ -z ${!cpu_var} ]] && return 0

 	if [[ -z ${UCLIBC_CPU} ]] ; then
 		ewarn "You really should consider setting UCLIBC_CPU"
 		ewarn "Otherwise, the build will be generic (read: slow)."
 		ewarn "Available CPU options:"
 		UCLIBC_CPU=$(eval echo ${!cpu_var})
 		echo ${UCLIBC_CPU}
 		case ${CTARGET} in
 			mips[1234]*) export UCLIBC_CPU="MIPS_ISA_${CTARGET:4:1}";;
 			sh[2345]*)   export UCLIBC_CPU="SH${CTARGET:2:1}";;
 			i[456]86*)   export UCLIBC_CPU="${CTARGET:1:1}86";;
 			*)           export UCLIBC_CPU=${UCLIBC_CPU%% *};;
 		esac
 	else
 		local cpu found=0
 		for cpu in $(eval echo ${!cpu_var}) ; do
 			[[ ${UCLIBC_CPU} == "${cpu}" ]] && found=1 && break
 		done
 		if [[ ${found} -eq 0 ]] ; then
 			ewarn "UCLIBC_CPU choice '${UCLIBC_CPU}' not supported"
 			ewarn "Valid choices:"
 			eval echo ${!cpu_var}
 			die "pick a supported cpu type"
 		fi
 	fi
 }

 src_unpack() {
 	[[ -n ${ESVN_REPO_URI} ]] \
 		&& subversion_src_unpack \
 		|| unpack ${A}
 	cd "${S}"

 	check_cpu_opts

 	echo
 	einfo "Runtime Prefix: /"
 	einfo "Devel Prefix:   /usr"
 	einfo "Kernel Prefix:  $(alt_build_kprefix)"
 	einfo "CBUILD:         ${CBUILD}"
 	einfo "CHOST:          ${CHOST}"
 	einfo "CTARGET:        ${CTARGET}"
 	einfo "CPU:            ${UCLIBC_CPU:-default}"
 	einfo "ENDIAN:         $(uclibc_endian)"
 	echo

 	########## PATCHES ##########

 	[[ -n ${SVN_VER} ]] && \
 		epatch "${WORKDIR}"/${MY_P}-cvs-update-${SVN_VER}.patch

 	if [[ -n ${PATCH_VER} ]] ; then
 		unpack ${MY_P}-patches-${PATCH_VER}.tar.bz2
 		EPATCH_SUFFIX="patch"
 		epatch "${WORKDIR}"/patch
 		# math functions (sinf,cosf,tanf,atan2f,powf,fabsf,copysignf,scalbnf,rem_pio2f)
 		cp "${WORKDIR}"/patch/math/libm/* "${S}"/libm/ || die
 		epatch "${WORKDIR}"/patch/math
 	fi

 	########## CPU SELECTION ##########

 	local target config_target
 	case $(tc-arch) in
 		alpha) target="alpha";   config_target="no cpu-specific options";;
 		amd64) target="x86_64";  config_target="no cpu-specific options";;
 		arm)   target="arm";     config_target="GENERIC_ARM";;
 		ia64)  target="ia64";    config_target="no cpu-specific options";;
 		m68k)  target="m68k";    config_target="no cpu-specific options";;
 		mips)  target="mips";    config_target="MIPS_ISA_1";;
 		ppc)   target="powerpc"; config_target="no cpu-specific options";;
 		sh)    target="sh";      config_target="SH4";;
 		sparc) target="sparc";   config_target="no cpu-specific options";;
 		x86)   target="i386";    config_target="GENERIC_386";;
 		*)     die "$(tc-arch) lists no defaults :/";;
 	esac
 	sed -i -e "s:default TARGET_i386:default TARGET_${target}:" \
 		extra/Configs/Config.in
 	sed -i -e "s:default CONFIG_${config_target}:default CONFIG_${UCLIBC_CPU:-${config_target}}:" \
 		extra/Configs/Config.${target}

 	########## CONFIG SETUP ##########

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

 	for def in DO{DEBUG{,_PT},ASSERTS} SUPPORT_LD_DEBUG{,_EARLY} ; do
 		sed -i -e "s:${def}=y:# ${def} is not set:" .config
 	done
 	if use debug ; then
 		#echo "SUPPORT_LD_DEBUG_EARLY=y" >> .config
 		echo "SUPPORT_LD_DEBUG=y" >> .config
 		echo "DODEBUG=y" >> .config
 		#echo "DODEBUG_PT=y" >> .config
 	fi

 	sed -i -e '/ARCH_.*_ENDIAN/d' .config
 	echo "ARCH_$(uclibc_endian | tr [a-z] [A-Z])_ENDIAN=y" >> .config

 	if [[ $(tc-is-softfloat) != "no" ]] ; then
 		sed -i -e '/^HAS_FPU=y$/d' .config
 		echo 'HAS_FPU=n' >> .config
 	fi

 	local moredefs="DL_FINI_CRT_COMPAT"
 	# We need todo this for a few months. .28 is a major upgrade.
 	# Don't do it from cross-compiling case though
 	if ! use uclibc-compat ; then
 		if [[ -z ${UCLIBC_AND_GLIBC} ]] && [[ -z ${UCLIBC_SCANNED_COMPAT} ]] && \
 		   ! just_headers && [[ ${CHOST} == ${CTARGET} ]] ; then
 			local fnames=""
 			einfo "Doing a scanelf in paths for bins containing the __uClibc_start_main symbol"
 			fnames=$(scanelf -pyqs__uClibc_start_main -F%F#s)
 			if [[ -z ${fnames} ]] ; then
 				einfo "This system is clean."
 				einfo "To prevent the scanning of files again in the future you can export UCLIBC_SCANNED_COMPAT=1"
 				moredefs=""
 			else
 				ewarn "You need to remerge the packages that contain the following files before you can remerge ${P} without USE=uclibc-compat enabled."
 				ewarn "qfile ${fnames}"
 				echo
 				ewarn "Leaving on ${moredefs}"
 			fi
 		else
 			moredefs=""
 		fi
 	fi
 	for def in ${moredefs} MALLOC_GLIBC_COMPAT 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=y" >> .config
 	echo "PTHREADS_DEBUG_SUPPORT=y" >> .config
 	echo "UCLIBC_HAS_TZ_FILE_READ_MANY=n" >> .config

 	if use iconv ; 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

 		if use nls ; then
 			echo "UCLIBC_HAS_GETTEXT_AWARENESS=y" >> .config
 		else
 			echo "UCLIBC_HAS_GETTEXT_AWARENESS=n" >> .config
 		fi

 		if use pregen ; then
 			echo "UCLIBC_PREGENERATED_LOCALE_DATA=y" >> .config
 			echo "UCLIBC_DOWNLOAD_PREGENERATED_LOCALE_DATA=y" >> .config
 			if use userlocales ; then
 				cp "${DISTDIR}"/${MY_P}-user-locale.tar.gz \
 					extra/locale/uClibc-locale-030818.tgz \
 					|| die "could not copy ${MY_P}-user-locale.tar.gz"
 			else
 				cp "${DISTDIR}"/${MY_P}-$(tc-arch)-full-locale.tar.gz \
 					extra/locale/uClibc-locale-030818.tgz \
 					|| die "could not copy locale"
 			fi
 		else
 			echo "UCLIBC_PREGENERATED_LOCALE_DATA=n" >> .config
 		fi
 	else
 		echo "UCLIBC_HAS_LOCALE=n" >> .config
 	fi

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

 	# uncomment if you miss wordexp (alsa-lib)
 	use wordexp && sed -i -e "s:# UCLIBC_HAS_WORDEXP is not set:UCLIBC_HAS_WORDEXP=y:" .config

 	# we need to do it independently of hardened to get ssp.c built into libc
 	sed -i -e "s:# UCLIBC_SECURITY.*:UCLIBC_SECURITY=y:" .config
 	echo "UCLIBC_HAS_SSP=y" >> .config
 	echo "SSP_USE_ERANDOM=n" >> .config
 	echo "PROPOLICE_BLOCK_ABRT=n" >> .config
 	if use debug ; then
 		echo "PROPOLICE_BLOCK_SEGV=y" >> .config
 		echo "PROPOLICE_BLOCK_KILL=n" >> .config
 	else
 		echo "PROPOLICE_BLOCK_SEGV=n" >> .config
 		echo "PROPOLICE_BLOCK_KILL=y" >> .config
 	fi

 	# arm/mips do not emit PT_GNU_STACK, but if we enable this here
 	# it will be emitted as RWE, ppc has to be checked, x86 needs it
 	# this option should be used independently of hardened
 	# relro could be also moved out of hardened
 	if has $(tc-arch) x86 ; then
 		echo "UCLIBC_BUILD_NOEXECSTACK=y" >> .config
 	else
 		echo "UCLIBC_BUILD_NOEXECSTACK=n" >> .config
 	fi
 	echo "UCLIBC_BUILD_RELRO=y" >> .config
 	if use hardened ; then
 		if has $(tc-arch) ${PIE_STABLE} ; then
 			echo "UCLIBC_BUILD_PIE=y" >> .config
 		else
 			echo "UCLIBC_BUILD_PIE=n" >> .config
 		fi
 		echo "SSP_QUICK_CANARY=n" >> .config
 		echo "UCLIBC_BUILD_SSP=y" >> .config
 		echo "UCLIBC_BUILD_NOW=y" >> .config
 	else
 		echo "UCLIBC_BUILD_PIE=n" >> .config
 		echo "SSP_QUICK_CANARY=y" >> .config
 		echo "UCLIBC_BUILD_SSP=n" >> .config
 		echo "UCLIBC_BUILD_NOW=n" >> .config
 	fi

 	# Allow users some custom control over the config
 	if use savedconfig ; then
 		for conf in ${PN}-${PV}-${PR} ${PN}-${PV} ${PN}; do
 			configfile=${ROOT}/etc/${PN}/${CTARGET}/${conf}.config
 			einfo "Checking existence of ${configfile} ..."
 			[[ -r ${configfile} ]] || configfile=/etc/${PN}/${CHOST}/${conf}.config
 			if [[ -r ${configfile} ]] ; then
 				cp "${configfile}" "${S}"/.config
 				einfo "Found your ${configfile} and using it."
 				einfo "Note that this feature is *totally unsupported*."
 				break
 			fi
 		done
 	fi

 	# setup build and run paths
 	local cross=${CTARGET}-
 	type -p ${cross}ar > /dev/null || cross=""
 	sed -i \
 		-e "/^CROSS_COMPILER_PREFIX/s:=.*:=\"${cross}\":" \
 		-e "/^KERNEL_SOURCE/s:=.*:=\"$(alt_build_kprefix)\":" \
 		-e "/^SHARED_LIB_LOADER_PREFIX/s:=.*:=\"/$(get_libdir)\":" \
 		-e "/^DEVEL_PREFIX/s:=.*:=\"/usr\":" \
 		-e "/^RUNTIME_PREFIX/s:=.*:=\"/\":" \
 		.config || die

 	yes "" 2> /dev/null | make -s oldconfig > /dev/null || die "could not make oldconfig"

 	cp .config myconfig

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

 setup_locales() {
 	cd "${S}"/extra/locale
 	if use userlocales && [[ -f ${ROOT}/etc/locales.build ]] ; then
 		:;
 	elif use minimal ; then
 		find ./charmaps -name ASCII.pairs > codesets.txt
 		find ./charmaps -name ISO-8859-1.pairs >> codesets.txt
 		cat <<-EOF > locales.txt
 		@euro e
 		UTF-8 yes
 		8-bit yes
 		en_US ISO-8859-1
 		en_US.UTF-8 UTF-8
 		EOF
 	else
 		find ./charmaps -name '*.pairs' > codesets.txt
 		cp LOCALES locales.txt
 	fi
 	cd -
 }

 src_compile() {
 	cp myconfig .config

 	emake headers || die "make headers failed"
 	just_headers && return 0

 	if use iconv && ! use pregen ; then
 		cd extra/locale
 		make clean || die "make locale clean failed"
 		setup_locales
 		emake || die "make locales failed"
 		cd ../..
 	fi

 	emake || die "make failed"
 	if [[ ${CTARGET} != ${CHOST} ]] ; then
 		emake -C utils hostutils || die "make hostutils failed"
 	elif [[ ${CHOST} == *-uclibc ]] ; then
 		emake utils || die "make utils failed"
 	fi
 }

 src_test() {
 	[[ ${CHOST} != ${CTARGET} ]] && return 0
 	[[ ${CBUILD} != ${CHOST} ]] && return 0

 	# assert test fails on pax/grsec enabled kernels - normal
 	# vfork test fails in sandbox (both glibc/uclibc)
 	make UCLIBC_ONLY=1 check || die "test failed"
 }

 src_install() {
 	local sysroot=${D}
 	[[ ${CHOST} != ${CTARGET} ]] && sysroot="${sysroot}/usr/${CTARGET}"

 	local target="install"
 	just_headers && target="install_dev"
 	emake DESTDIR="${sysroot}" ${target} || die "install failed"

 	# remove files coming from kernel-headers
 	rm -rf "${sysroot}"/usr/include/{linux,asm*}

 	if [[ -e ${D}/usr/include/bits/fenv.h && ! -e ${D}/usr/include/fenv.h ]] ; then
 		# install fenv.h for newer gcc versions #266298
 		cat <<-EOF > "${D}"/usr/include/fenv.h
 		#ifndef _FENV_H
 		#define _FENV_H
 		#include <features.h>
 		#include <bits/fenv.h>
 		#endif
 		EOF
 	fi

 	# Make sure we install the sys-include symlink so that when
 	# we build a 2nd stage cross-compiler, gcc finds the target
 	# system headers correctly.  See gcc/doc/gccinstall.info
 	if [[ ${CTARGET} != ${CHOST} ]] ; then
 		dosym usr/include /usr/${CTARGET}/sys-include
 		if ! just_headers ; then
 			newbin utils/ldconfig.host ${CTARGET}-ldconfig || die
 			newbin utils/ldd.host ${CTARGET}-ldd || die
 		fi
 		return 0
 	fi

 	if [[ ${CHOST} == *-uclibc* ]] ; then
 		emake DESTDIR="${D}" install_utils || die "install-utils failed"
 		dobin extra/scripts/getent
 	fi

 	dodoc Changelog* README TODO docs/*.txt DEDICATION.mjn3
 }

 pkg_postinst() {
 	[[ ${CTARGET} != ${CHOST} ]] && return 0
 	[[ ${CHOST} != *-uclibc* ]] && return 0

 	if [[ ! -e ${ROOT}/etc/TZ ]] ; then
 		ewarn "Please remember to set your timezone in /etc/TZ"
 		[[ ! -d ${ROOT}/etc ]] && mkdir -p "${ROOT}"/etc
 		echo "UTC" > "${ROOT}"/etc/TZ
 	fi

 	if [[ ${ROOT} == "/" ]] ; then
 		# update cache before reloading init
 		/sbin/ldconfig
 		# reload init ...
 		[[ -x /sbin/telinit ]] && /sbin/telinit U &> /dev/null
 	fi
 }
	# Copyright 1999-2010 Gentoo Foundation
	# Distributed under the terms of the GNU General Public License v2
	# $Header: /var/cvsroot/gentoo-x86/sys-libs/uclibc/uclibc-0.9.28.3-r8.ebuild,v 1.6 2010/01/18 23:41:46 solar Exp $

	#ESVN_REPO_URI="svn://uclibc.org/trunk/uClibc"
	#inherit subversion
	inherit eutils flag-o-matic toolchain-funcs

	export CBUILD=${CBUILD:-${CHOST}}
	export CTARGET=${CTARGET:-${CHOST}}
	if [[ ${CTARGET} == ${CHOST} ]] ; then
	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
	export CTARGET=${CATEGORY/cross-}
	fi
	fi
	# Handle the case where we want uclibc on glibc ...
	if [[ ${CTARGET} == ${CHOST} ]] && [[ ${CHOST} != *-uclibc ]] ; then
	export UCLIBC_AND_GLIBC="sitting in a tree"
	export CTARGET=${CHOST%%-*}-pc-linux-uclibc
	fi

	MY_P=uClibc-${PV}
	SVN_VER=""
	PATCH_VER="1.9"
	DESCRIPTION="C library for developing embedded Linux systems"
	HOMEPAGE="http://www.uclibc.org/"
	SRC_URI="mirror://kernel/linux/libs/uclibc/${MY_P}.tar.bz2
	http://uclibc.org/downloads/${MY_P}.tar.bz2
	nls? ( !userlocales? ( pregen? (
	x86? ( http://www.uclibc.org/downloads/uClibc-locale-030818.tgz )
	) ) )"
	[[ -z ${SVN_VER} ]] \|\| \
	SRC_URI="${SRC_URI} mirror://gentoo/${MY_P}-svn-update-${SVN_VER}.patch.bz2"
	[[ -z ${PATCH_VER} ]] \|\| \
	SRC_URI="${SRC_URI} mirror://gentoo/${MY_P}-patches-${PATCH_VER}.tar.bz2"

	LICENSE="LGPL-2"
	[[ ${CTARGET} != ${CHOST} ]] \
	&& SLOT="${CTARGET}" \
	\|\| SLOT="0"
	KEYWORDS="-* arm m68k -mips ppc sh ~sparc x86"
	IUSE="build elibc_uclibc uclibc-compat debug hardened iconv ipv6 minimal nls pregen savedconfig userlocales wordexp crosscompile_opts_headers-only"
	RESTRICT="strip"

	RDEPEND=""
	PROVIDE="elibc_uclibc? ( virtual/libc )"
	if [[ ${CTARGET} == ${CHOST} ]] ; then
	DEPEND="virtual/os-headers app-misc/pax-utils"
	else
	DEPEND=""
	fi

	S=${WORKDIR}/${MY_P}

	alt_build_kprefix() {
	if [[ ${CBUILD} == ${CHOST} && ${CTARGET} == ${CHOST} ]] \
	\|\| [[ -n ${UCLIBC_AND_GLIBC} ]]
	then
	echo /usr
	else
	echo /usr/${CTARGET}/usr
	fi
	}
	just_headers() {
	use crosscompile_opts_headers-only && [[ ${CHOST} != ${CTARGET} ]]
	}

	uclibc_endian() {
	# XXX: this wont work for a toolchain which is bi-endian, but we
	# dont have any such thing at the moment, so not a big deal
	touch "${T}"/endian.s
	$(tc-getAS ${CTARGET}) "${T}"/endian.s -o "${T}"/endian.o
	case $(file "${T}"/endian.o) in
	" MSB ") echo "big";;
	" LSB ") echo "little";;
	*) echo "NFC";;
	esac
	rm -f "${T}"/endian.{s,o}
	}

	pkg_setup() {
	just_headers && return 0
	has_version ${CATEGORY}/uclibc \|\| return 0
	[[ -n ${UCLIBC_AND_GLIBC} ]] && return 0
	[[ ${ROOT} != "/" ]] && return 0
	[[ ${CATEGORY} == cross-* ]] && return 0

	if ! built_with_use --missing false ${CATEGORY}/uclibc nls && use nls && ! use pregen ; then
	eerror "You previously built uclibc with USE=-nls."
	eerror "You cannot generate locale data with this"
	eerror "system. Please rerun emerge with USE=pregen."
	die "host cannot support locales"
	elif built_with_use --missing false ${CATEGORY}/uclibc nls && ! use nls ; then
	eerror "You previously built uclibc with USE=nls."
	eerror "Rebuilding uClibc with USE=-nls will prob"
	eerror "destroy your system."
	die "switching from nls is baaaad"
	fi
	}

	PIE_STABLE="arm mips ppc x86"

	CPU_ALPHA=""
	CPU_AMD64=""
	CPU_ARM="GENERIC_ARM ARM{610,710,720T,920T,922T,926T,_{SA110,SA1100,XSCALE}}"
	CPU_IA64=""
	CPU_M68K=""
	CPU_MIPS="MIPS_ISA_{1,2,3,4,MIPS{32,64}}"
	CPU_PPC=""
	CPU_SH="SH{2,3,4,5}"
	CPU_SPARC=""
	CPU_X86="GENERIC_386 {3,4,5,6}86 586MMX PENTIUM{II,III,4} K{6,7} ELAN CRUSOE WINCHIP{C6,2} CYRIXIII NEHEMIAH"
	IUSE_UCLIBC_CPU="${CPU_ARM} ${CPU_MIPS} ${CPU_PPC} ${CPU_SH} ${CPU_SPARC} ${CPU_X86}"

	check_cpu_opts() {
	local cpu_var="CPU_$(echo $(tc-arch) \| tr [a-z] [A-Z])"
	[[ -z ${!cpu_var} ]] && return 0

	if [[ -z ${UCLIBC_CPU} ]] ; then
	ewarn "You really should consider setting UCLIBC_CPU"
	ewarn "Otherwise, the build will be generic (read: slow)."
	ewarn "Available CPU options:"
	UCLIBC_CPU=$(eval echo ${!cpu_var})
	echo ${UCLIBC_CPU}
	case ${CTARGET} in
	mips[1234]*) export UCLIBC_CPU="MIPS_ISA_${CTARGET:4:1}";;
	sh[2345]*) export UCLIBC_CPU="SH${CTARGET:2:1}";;
	i[456]86*) export UCLIBC_CPU="${CTARGET:1:1}86";;
	) export UCLIBC_CPU=${UCLIBC_CPU%% };;
	esac
	else
	local cpu found=0
	for cpu in $(eval echo ${!cpu_var}) ; do
	[[ ${UCLIBC_CPU} == "${cpu}" ]] && found=1 && break
	done
	if [[ ${found} -eq 0 ]] ; then
	ewarn "UCLIBC_CPU choice '${UCLIBC_CPU}' not supported"
	ewarn "Valid choices:"
	eval echo ${!cpu_var}
	die "pick a supported cpu type"
	fi
	fi
	}

	src_unpack() {
	[[ -n ${ESVN_REPO_URI} ]] \
	&& subversion_src_unpack \
	\|\| unpack ${A}
	cd "${S}"

	check_cpu_opts

	echo
	einfo "Runtime Prefix: /"
	einfo "Devel Prefix: /usr"
	einfo "Kernel Prefix: $(alt_build_kprefix)"
	einfo "CBUILD: ${CBUILD}"
	einfo "CHOST: ${CHOST}"
	einfo "CTARGET: ${CTARGET}"
	einfo "CPU: ${UCLIBC_CPU:-default}"
	einfo "ENDIAN: $(uclibc_endian)"
	echo

	########## PATCHES ##########

	[[ -n ${SVN_VER} ]] && \
	epatch "${WORKDIR}"/${MY_P}-cvs-update-${SVN_VER}.patch

	if [[ -n ${PATCH_VER} ]] ; then
	unpack ${MY_P}-patches-${PATCH_VER}.tar.bz2
	EPATCH_SUFFIX="patch"
	epatch "${WORKDIR}"/patch
	# math functions (sinf,cosf,tanf,atan2f,powf,fabsf,copysignf,scalbnf,rem_pio2f)
	cp "${WORKDIR}"/patch/math/libm/* "${S}"/libm/ \|\| die
	epatch "${WORKDIR}"/patch/math
	fi

	########## CPU SELECTION ##########

	local target config_target
	case $(tc-arch) in
	alpha) target="alpha"; config_target="no cpu-specific options";;
	amd64) target="x86_64"; config_target="no cpu-specific options";;
	arm) target="arm"; config_target="GENERIC_ARM";;
	ia64) target="ia64"; config_target="no cpu-specific options";;
	m68k) target="m68k"; config_target="no cpu-specific options";;
	mips) target="mips"; config_target="MIPS_ISA_1";;
	ppc) target="powerpc"; config_target="no cpu-specific options";;
	sh) target="sh"; config_target="SH4";;
	sparc) target="sparc"; config_target="no cpu-specific options";;
	x86) target="i386"; config_target="GENERIC_386";;
	*) die "$(tc-arch) lists no defaults :/";;
	esac
	sed -i -e "s:default TARGET_i386:default TARGET_${target}:" \
	extra/Configs/Config.in
	sed -i -e "s:default CONFIG_${config_target}:default CONFIG_${UCLIBC_CPU:-${config_target}}:" \
	extra/Configs/Config.${target}

	########## CONFIG SETUP ##########

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

	for def in DO{DEBUG{,_PT},ASSERTS} SUPPORT_LD_DEBUG{,_EARLY} ; do
	sed -i -e "s:${def}=y:# ${def} is not set:" .config
	done
	if use debug ; then
	#echo "SUPPORT_LD_DEBUG_EARLY=y" >> .config
	echo "SUPPORT_LD_DEBUG=y" >> .config
	echo "DODEBUG=y" >> .config
	#echo "DODEBUG_PT=y" >> .config
	fi

	sed -i -e '/ARCH_.*_ENDIAN/d' .config
	echo "ARCH_$(uclibc_endian \| tr [a-z] [A-Z])_ENDIAN=y" >> .config

	if [[ $(tc-is-softfloat) != "no" ]] ; then
	sed -i -e '/^HAS_FPU=y$/d' .config
	echo 'HAS_FPU=n' >> .config
	fi

	local moredefs="DL_FINI_CRT_COMPAT"
	# We need todo this for a few months. .28 is a major upgrade.
	# Don't do it from cross-compiling case though
	if ! use uclibc-compat ; then
	if [[ -z ${UCLIBC_AND_GLIBC} ]] && [[ -z ${UCLIBC_SCANNED_COMPAT} ]] && \
	! just_headers && [[ ${CHOST} == ${CTARGET} ]] ; then
	local fnames=""
	einfo "Doing a scanelf in paths for bins containing the __uClibc_start_main symbol"
	fnames=$(scanelf -pyqs__uClibc_start_main -F%F#s)
	if [[ -z ${fnames} ]] ; then
	einfo "This system is clean."
	einfo "To prevent the scanning of files again in the future you can export UCLIBC_SCANNED_COMPAT=1"
	moredefs=""
	else
	ewarn "You need to remerge the packages that contain the following files before you can remerge ${P} without USE=uclibc-compat enabled."
	ewarn "qfile ${fnames}"
	echo
	ewarn "Leaving on ${moredefs}"
	fi
	else
	moredefs=""
	fi
	fi
	for def in ${moredefs} MALLOC_GLIBC_COMPAT 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=y" >> .config
	echo "PTHREADS_DEBUG_SUPPORT=y" >> .config
	echo "UCLIBC_HAS_TZ_FILE_READ_MANY=n" >> .config

	if use iconv ; 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

	if use nls ; then
	echo "UCLIBC_HAS_GETTEXT_AWARENESS=y" >> .config
	else
	echo "UCLIBC_HAS_GETTEXT_AWARENESS=n" >> .config
	fi

	if use pregen ; then
	echo "UCLIBC_PREGENERATED_LOCALE_DATA=y" >> .config
	echo "UCLIBC_DOWNLOAD_PREGENERATED_LOCALE_DATA=y" >> .config
	if use userlocales ; then
	cp "${DISTDIR}"/${MY_P}-user-locale.tar.gz \
	extra/locale/uClibc-locale-030818.tgz \
	\|\| die "could not copy ${MY_P}-user-locale.tar.gz"
	else
	cp "${DISTDIR}"/${MY_P}-$(tc-arch)-full-locale.tar.gz \
	extra/locale/uClibc-locale-030818.tgz \
	\|\| die "could not copy locale"
	fi
	else
	echo "UCLIBC_PREGENERATED_LOCALE_DATA=n" >> .config
	fi
	else
	echo "UCLIBC_HAS_LOCALE=n" >> .config
	fi

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

	# uncomment if you miss wordexp (alsa-lib)
	use wordexp && sed -i -e "s:# UCLIBC_HAS_WORDEXP is not set:UCLIBC_HAS_WORDEXP=y:" .config

	# we need to do it independently of hardened to get ssp.c built into libc
	sed -i -e "s:# UCLIBC_SECURITY.*:UCLIBC_SECURITY=y:" .config
	echo "UCLIBC_HAS_SSP=y" >> .config
	echo "SSP_USE_ERANDOM=n" >> .config
	echo "PROPOLICE_BLOCK_ABRT=n" >> .config
	if use debug ; then
	echo "PROPOLICE_BLOCK_SEGV=y" >> .config
	echo "PROPOLICE_BLOCK_KILL=n" >> .config
	else
	echo "PROPOLICE_BLOCK_SEGV=n" >> .config
	echo "PROPOLICE_BLOCK_KILL=y" >> .config
	fi

	# arm/mips do not emit PT_GNU_STACK, but if we enable this here
	# it will be emitted as RWE, ppc has to be checked, x86 needs it
	# this option should be used independently of hardened
	# relro could be also moved out of hardened
	if has $(tc-arch) x86 ; then
	echo "UCLIBC_BUILD_NOEXECSTACK=y" >> .config
	else
	echo "UCLIBC_BUILD_NOEXECSTACK=n" >> .config
	fi
	echo "UCLIBC_BUILD_RELRO=y" >> .config
	if use hardened ; then
	if has $(tc-arch) ${PIE_STABLE} ; then
	echo "UCLIBC_BUILD_PIE=y" >> .config
	else
	echo "UCLIBC_BUILD_PIE=n" >> .config
	fi
	echo "SSP_QUICK_CANARY=n" >> .config
	echo "UCLIBC_BUILD_SSP=y" >> .config
	echo "UCLIBC_BUILD_NOW=y" >> .config
	else
	echo "UCLIBC_BUILD_PIE=n" >> .config
	echo "SSP_QUICK_CANARY=y" >> .config
	echo "UCLIBC_BUILD_SSP=n" >> .config
	echo "UCLIBC_BUILD_NOW=n" >> .config
	fi

	# Allow users some custom control over the config
	if use savedconfig ; then
	for conf in ${PN}-${PV}-${PR} ${PN}-${PV} ${PN}; do
	configfile=${ROOT}/etc/${PN}/${CTARGET}/${conf}.config
	einfo "Checking existence of ${configfile} ..."
	[[ -r ${configfile} ]] \|\| configfile=/etc/${PN}/${CHOST}/${conf}.config
	if [[ -r ${configfile} ]] ; then
	cp "${configfile}" "${S}"/.config
	einfo "Found your ${configfile} and using it."
	einfo "Note that this feature is totally unsupported."
	break
	fi
	done
	fi

	# setup build and run paths
	local cross=${CTARGET}-
	type -p ${cross}ar > /dev/null \|\| cross=""
	sed -i \
	-e "/^CROSS_COMPILER_PREFIX/s:=.*:=\"${cross}\":" \
	-e "/^KERNEL_SOURCE/s:=.*:=\"$(alt_build_kprefix)\":" \
	-e "/^SHARED_LIB_LOADER_PREFIX/s:=.*:=\"/$(get_libdir)\":" \
	-e "/^DEVEL_PREFIX/s:=.*:=\"/usr\":" \
	-e "/^RUNTIME_PREFIX/s:=.*:=\"/\":" \
	.config \|\| die

	yes "" 2> /dev/null \| make -s oldconfig > /dev/null \|\| die "could not make oldconfig"

	cp .config myconfig

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

	setup_locales() {
	cd "${S}"/extra/locale
	if use userlocales && [[ -f ${ROOT}/etc/locales.build ]] ; then
	:;
	elif use minimal ; then
	find ./charmaps -name ASCII.pairs > codesets.txt
	find ./charmaps -name ISO-8859-1.pairs >> codesets.txt
	cat <<-EOF > locales.txt
	@euro e
	UTF-8 yes
	8-bit yes
	en_US ISO-8859-1
	en_US.UTF-8 UTF-8
	EOF
	else
	find ./charmaps -name '*.pairs' > codesets.txt
	cp LOCALES locales.txt
	fi
	cd -
	}

	src_compile() {
	cp myconfig .config

	emake headers \|\| die "make headers failed"
	just_headers && return 0

	if use iconv && ! use pregen ; then
	cd extra/locale
	make clean \|\| die "make locale clean failed"
	setup_locales
	emake \|\| die "make locales failed"
	cd ../..
	fi

	emake \|\| die "make failed"
	if [[ ${CTARGET} != ${CHOST} ]] ; then
	emake -C utils hostutils \|\| die "make hostutils failed"
	elif [[ ${CHOST} == *-uclibc ]] ; then
	emake utils \|\| die "make utils failed"
	fi
	}

	src_test() {
	[[ ${CHOST} != ${CTARGET} ]] && return 0
	[[ ${CBUILD} != ${CHOST} ]] && return 0

	# assert test fails on pax/grsec enabled kernels - normal
	# vfork test fails in sandbox (both glibc/uclibc)
	make UCLIBC_ONLY=1 check \|\| die "test failed"
	}

	src_install() {
	local sysroot=${D}
	[[ ${CHOST} != ${CTARGET} ]] && sysroot="${sysroot}/usr/${CTARGET}"

	local target="install"
	just_headers && target="install_dev"
	emake DESTDIR="${sysroot}" ${target} \|\| die "install failed"

	# remove files coming from kernel-headers
	rm -rf "${sysroot}"/usr/include/{linux,asm*}

	if [[ -e ${D}/usr/include/bits/fenv.h && ! -e ${D}/usr/include/fenv.h ]] ; then
	# install fenv.h for newer gcc versions #266298
	cat <<-EOF > "${D}"/usr/include/fenv.h
	#ifndef _FENV_H
	#define _FENV_H
	#include <features.h>
	#include <bits/fenv.h>
	#endif
	EOF
	fi

	# Make sure we install the sys-include symlink so that when
	# we build a 2nd stage cross-compiler, gcc finds the target
	# system headers correctly. See gcc/doc/gccinstall.info
	if [[ ${CTARGET} != ${CHOST} ]] ; then
	dosym usr/include /usr/${CTARGET}/sys-include
	if ! just_headers ; then
	newbin utils/ldconfig.host ${CTARGET}-ldconfig \|\| die
	newbin utils/ldd.host ${CTARGET}-ldd \|\| die
	fi
	return 0
	fi

	if [[ ${CHOST} == -uclibc ]] ; then
	emake DESTDIR="${D}" install_utils \|\| die "install-utils failed"
	dobin extra/scripts/getent
	fi

	dodoc Changelog* README TODO docs/*.txt DEDICATION.mjn3
	}

	pkg_postinst() {
	[[ ${CTARGET} != ${CHOST} ]] && return 0
	[[ ${CHOST} != -uclibc ]] && return 0

	if [[ ! -e ${ROOT}/etc/TZ ]] ; then
	ewarn "Please remember to set your timezone in /etc/TZ"
	[[ ! -d ${ROOT}/etc ]] && mkdir -p "${ROOT}"/etc
	echo "UTC" > "${ROOT}"/etc/TZ
	fi

	if [[ ${ROOT} == "/" ]] ; then
	# update cache before reloading init
	/sbin/ldconfig
	# reload init ...
	[[ -x /sbin/telinit ]] && /sbin/telinit U &> /dev/null
	fi
	}