--- /dev/null
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+
+inherit eutils flag-o-matic multilib toolchain-funcs
+if [[ ${PV} == "9999" ]] ; then
+ EGIT_REPO_URI="git://git.musl-libc.org/musl"
+ inherit git-r3
+fi
+
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} ]] ; then
+ if [[ ${CATEGORY} == cross-* ]] ; then
+ export CTARGET=${CATEGORY#cross-}
+ fi
+fi
+
+DESCRIPTION="Light, fast and simple C library focused on standards-conformance and safety"
+HOMEPAGE="http://www.musl-libc.org/"
+if [[ ${PV} != "9999" ]] ; then
+ PATCH_VER=""
+ SRC_URI="http://www.musl-libc.org/releases/${P}.tar.gz"
+ KEYWORDS="-* ~amd64 ~arm ~mips ~ppc ~x86"
+fi
+
+LICENSE="MIT LGPL-2 GPL-2"
+SLOT="0"
+IUSE="crosscompile_opts_headers-only"
+
+RDEPEND="!sys-apps/getent"
+
+is_crosscompile() {
+ [[ ${CHOST} != ${CTARGET} ]]
+}
+
+just_headers() {
+ use crosscompile_opts_headers-only && is_crosscompile
+}
+
+musl_endian() {
+ # XXX: this wont work for bi-endian, but we dont have any
+ touch "${T}"/endian.s || die
+ $(tc-getAS ${CTARGET}) "${T}"/endian.s -o "${T}"/endian.o
+ case $(file "${T}"/endian.o) in
+ *" MSB "*) echo "";;
+ *" LSB "*) echo "el";;
+ *) echo "nfc";; # We shouldn't be here
+ esac
+}
+
+pkg_setup() {
+ if [ ${CTARGET} == ${CHOST} ] ; then
+ case ${CHOST} in
+ *-musl*) ;;
+ *) die "Use sys-devel/crossdev to build a musl toolchain" ;;
+ esac
+ fi
+}
+
+src_prepare() {
+ epatch_user
+}
+
+src_configure() {
+ tc-getCC ${CTARGET}
+ just_headers && export CC=true
+
+ local sysroot
+ is_crosscompile && sysroot=/usr/${CTARGET}
+ ./configure \
+ --target=${CTARGET} \
+ --prefix=${sysroot}/usr \
+ --syslibdir=${sysroot}/lib \
+ --disable-gcc-wrapper
+}
+
+src_compile() {
+ emake include/bits/alltypes.h
+ just_headers && return 0
+
+ emake
+}
+
+src_install() {
+ local target="install"
+ just_headers && target="install-headers"
+ emake DESTDIR="${D}" ${target}
+ just_headers && return 0
+
+ # musl provides ldd via a sym link to its ld.so
+ local sysroot
+ is_crosscompile && sysroot=/usr/${CTARGET}
+ local ldso=$(basename "${D}"${sysroot}/lib/ld-musl-*)
+ dosym ${sysroot}/lib/${ldso} ${sysroot}/usr/bin/ldd
+
+ if [[ ${CATEGORY} != cross-* ]] ; then
+ local target=$(tc-arch) arch
+ local endian=$(musl_endian)
+ case ${target} in
+ amd64) arch="x86_64";;
+ arm) arch="armhf";; # We only have hardfloat right now
+ mips) arch="mips${endian}";;
+ ppc) arch="powerpc";;
+ x86) arch="i386";;
+ esac
+ cp "${FILESDIR}"/ldconfig.in "${T}" || die
+ sed -e "s|@@ARCH@@|${arch}|" "${T}"/ldconfig.in > "${T}"/ldconfig || die
+ into /
+ dosbin "${T}"/ldconfig
+ into /usr
+ dobin "${FILESDIR}"/getent
+ echo 'LDPATH="include ld.so.conf.d/*.conf"' > "${T}"/00musl || die
+ doenvd "${T}"/00musl || die
+ fi
+}
+
+pkg_postinst() {
+ is_crosscompile && return 0
+
+ [ "${ROOT}" != "/" ] && return 0
+
+ ldconfig
+ # reload init ...
+ /sbin/telinit U 2>/dev/null
+}
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