gcc5 compatible klibc

7 files changed, 546 insertions, 0 deletions

diff --git a/dev-libs/klibc/Manifest b/dev-libs/klibc/Manifest
new file mode 100644
index 00000000..b763148e
--- /dev/null
+++ b/dev-libs/klibc/Manifest
@@ -0,0 +1,3 @@
+DIST klibc-2.0.4.tar.xz 469348 SHA256 7f9a0850586def7cf4faeeb75e5d0f66e613674c524f6e77b0f4d93a26c801cb SHA512 7a01d1744b49f3de64111fefc522b1d63f054199acf671254bc046d6f1d0b6ca68e050c99025bf8303751c2466a5e034677555649ae5909c40997858d393db8d WHIRLPOOL f5dc71b48f118155df512d8ac839b66d361b22ff4e040e49a562722d82f18ac83a8c682bf0b4c59a9b108473f74bebc673d38456cf0ab5b1051071ca3fa9b78e
+DIST klibc_2.0.2-1.debian.tar.gz 21305 SHA256 93f4b9be5a3c725a38b7ac137850311e3cf8d8094874006c7dce793d2b71e469 SHA512 9cbcc39396a49bc37ace79eaefad6e704ddc9f30aba1b39f40dd2888dad06eeeb7b9c1a387cee60a95cf5641f50bd7f225cf8209547c75a8bae8af4285152d91 WHIRLPOOL a42e148550a27426e8f38b54cb4f3b1f355759d573ab27c0ecadb0c68d0afd54a5950471628ec4e2e27ac9c8b9d841940d6b0f2c0a873d4feab7af37e7989a52
+DIST linux-3.12.tar.xz 76384600 SHA256 2e120ec7fde19fa51dc6b6cc11c81860a0775defcad5a5bf910ed9a50e845a02 SHA512 4ba5797e0772726d05c9f2eee66dc6dc2a5033c749ef44764c805a83da739ed5d0c6443b76785e38fe1ef74cc7ade787e48144faed0cfcb6f124f05248c700ff WHIRLPOOL a40195f6b53ba3440cf90a44495f6a59670f750851d1518e2bdfe3b949f0e898d1df5d37e271c31c555087026ddb6cc2c9109b22b9639e3222735e6f650a1417
diff --git a/dev-libs/klibc/files/klibc-1.4.11-interp-flags.patch b/dev-libs/klibc/files/klibc-1.4.11-interp-flags.patch
new file mode 100644
index 00000000..a5bb9176
--- /dev/null
+++ b/dev-libs/klibc/files/klibc-1.4.11-interp-flags.patch
@@ -0,0 +1,13 @@
+diff --git a/usr/klibc/Kbuild b/usr/klibc/Kbuild
+index c2bfd2f..8066bda 100644
+--- a/usr/klibc/Kbuild
++++ b/usr/klibc/Kbuild
+@@ -152,7 +152,7 @@ # build interp.o
+ targets += interp.o
+ 
+ quiet_cmd_interp = BUILD   $@
+-      cmd_interp = $(KLIBCCC) $(klibccflags) -D__ASSEMBLY__     \
++      cmd_interp = $(KLIBCCC) $(klibccflags) $(EXTRA_KLIBCAFLAGS) -D__ASSEMBLY__     \
+                              -DLIBDIR=\"$(SHLIBDIR)\"         \
+ 			     -DSOHASH=\"$(SOLIBHASH)\" \
+ 			     -c -o $@ $<
diff --git a/dev-libs/klibc/files/klibc-1.5.7-strip-fix-dash-s.patch b/dev-libs/klibc/files/klibc-1.5.7-strip-fix-dash-s.patch
new file mode 100644
index 00000000..94a0caee
--- /dev/null
+++ b/dev-libs/klibc/files/klibc-1.5.7-strip-fix-dash-s.patch
@@ -0,0 +1,12 @@
+diff -Naurp klibc-1.5.7-orig/klcc/klcc.in klibc-1.5.7/klcc/klcc.in
+--- klibc-1.5.7-orig/klcc/klcc.in	2007-12-03 01:17:26.000000000 +0100
++++ klibc-1.5.7/klcc/klcc.in	2007-12-03 01:18:39.000000000 +0100
+@@ -259,7 +259,7 @@ if ( $operation ne '' ) {
+     unlink(@rmobjs);
+ 
+     if ( $strip && !$rv ) {
+-	$rv = mysystem($STRIP, @STRIPFLAGS, $output);
++	$rv = mysystem($STRIP, @STRIPFLAGS, $output || 'a.out');
+     }
+ }
+ 
diff --git a/dev-libs/klibc/files/klibc-2.0.2-mkfifo.patch b/dev-libs/klibc/files/klibc-2.0.2-mkfifo.patch
new file mode 100644
index 00000000..cfbc5f63
--- /dev/null
+++ b/dev-libs/klibc/files/klibc-2.0.2-mkfifo.patch
@@ -0,0 +1,15 @@
+diff -Nuar --exclude '*.g' --exclude '*.cmd' klibc-2.0.2-r1/work/klibc-2.0.2/usr/utils/mkfifo.c klibc-2.0.2.orig/work/klibc-2.0.2/usr/utils/mkfifo.c
+--- klibc-2.0.2-r1/work/klibc-2.0.2/usr/utils/mkfifo.c	2012-10-03 09:41:43.000000000 -0700
++++ klibc-2.0.2.orig/work/klibc-2.0.2/usr/utils/mkfifo.c	2013-12-26 13:19:34.270949780 -0800
+@@ -13,6 +13,11 @@
+ 
+ char *progname;
+ 
++int mkfifo (const char *__p, mode_t __m)
++{
++	return mknod(__p, (__m & ~S_IFMT) | S_IFIFO, (dev_t) 0);
++}
++
+ static int make_fifo(char *dir)
+ {
+ 	if (mkfifo(dir, leaf_mode)) {
diff --git a/dev-libs/klibc/files/klibc-2.0.3-kernel-uapi.patch b/dev-libs/klibc/files/klibc-2.0.3-kernel-uapi.patch
new file mode 100644
index 00000000..7d253977
--- /dev/null
+++ b/dev-libs/klibc/files/klibc-2.0.3-kernel-uapi.patch
@@ -0,0 +1,88 @@
+Update header locations for uapi & generated
+
+In the v3.6 kernel, many of the headers were split out into a uapi variant.
+klibc should be using those variants to compile.
+
+There is also a generated subdir, to seperate out generated headers.
+
+The old kernel header location needs to be included as well, because
+linux/compiler.h is available only in the base include directory.
+
+Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
+
+diff -Nuar klibc-2.0.3.orig/scripts/Kbuild.klibc klibc-2.0.3/scripts/Kbuild.klibc
+--- klibc-2.0.3.orig/scripts/Kbuild.klibc	2013-12-03 10:53:46.000000000 -0800
++++ klibc-2.0.3/scripts/Kbuild.klibc	2013-12-26 14:39:07.113906101 -0800
+@@ -77,7 +77,10 @@
+ KLIBCCFLAGS       :=
+ 
+ # Defaults for arch to override
+-KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include
++KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include/generated/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include/generated \
++                    -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include
+ 
+ # Arch specific definitions for klibc
+ include $(srctree)/$(KLIBCSRC)/arch/$(KLIBCARCHDIR)/MCONFIG
+@@ -116,6 +119,9 @@
+-KLIBCCPPFLAGS    += -I$(KLIBCKERNELSRC)/include				    \
++KLIBCCPPFLAGS    += -I$(KLIBCKERNELSRC)/include/uapi				    \
++                    -I$(KLIBCKERNELSRC)/include/generated/uapi				    \
++                    -I$(KLIBCKERNELSRC)/include/generated				    \
++                    -I$(KLIBCKERNELSRC)/include				    \
+                      $(if $(KBUILD_SRC),-I$(KLIBCKERNELOBJ)/include2 	    \
+ 		       -I$(KLIBCKERNELOBJ)/include -I$(srctree)/include)    \
+ 		     $(KLIBCARCHINCFLAGS)
+ 
+ # klibc definitions
+diff -Nuar klibc-2.0.3.orig/usr/klibc/arch/i386/MCONFIG klibc-2.0.3/usr/klibc/arch/i386/MCONFIG
+--- klibc-2.0.3.orig/usr/klibc/arch/i386/MCONFIG	2013-12-03 10:53:46.000000000 -0800
++++ klibc-2.0.3/usr/klibc/arch/i386/MCONFIG	2013-12-26 14:44:56.349161344 -0800
+@@ -34,3 +34,6 @@
+ 
+ # Asm includes for i386 are in the merged x86 tree
+-KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/x86/include
++KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/x86/include/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/x86/include/generated/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/x86/include/generated \
++                    -I$(KLIBCKERNELOBJ)/arch/x86/include
+diff -Nuar klibc-2.0.3.orig/usr/klibc/arch/ppc/MCONFIG klibc-2.0.3/usr/klibc/arch/ppc/MCONFIG
+--- klibc-2.0.3.orig/usr/klibc/arch/ppc/MCONFIG	2013-12-03 10:53:46.000000000 -0800
++++ klibc-2.0.3/usr/klibc/arch/ppc/MCONFIG	2013-12-26 14:44:56.350161362 -0800
+@@ -24,6 +24,9 @@
+ 
+ # The kernel so far has both asm-ppc* and asm-powerpc.
+-KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/powerpc/include
++KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/powerpc/include/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/powerpc/include/generated/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/powerpc/include/generated \
++                    -I$(KLIBCKERNELOBJ)/arch/powerpc/include
+ 
+ # The asm include files live in asm-powerpc
+ KLIBCASMARCH	= powerpc
+diff -Nuar klibc-2.0.3.orig/usr/klibc/arch/ppc64/MCONFIG klibc-2.0.3/usr/klibc/arch/ppc64/MCONFIG
+--- klibc-2.0.3.orig/usr/klibc/arch/ppc64/MCONFIG	2013-12-03 10:53:46.000000000 -0800
++++ klibc-2.0.3/usr/klibc/arch/ppc64/MCONFIG	2013-12-26 14:44:56.350161362 -0800
+@@ -22,6 +22,9 @@
+ 
+ # The kernel so far has both asm-ppc* and asm-powerpc.
+-KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/powerpc/include
++KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/powerpc/include/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/powerpc/include/generated/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/powerpc/include/generated \
++                    -I$(KLIBCKERNELOBJ)/arch/powerpc/include
+ 
+ # The asm include files live in asm-powerpc
+ KLIBCASMARCH	= powerpc
+diff -Nuar klibc-2.0.3.orig/usr/klibc/arch/x86_64/MCONFIG klibc-2.0.3/usr/klibc/arch/x86_64/MCONFIG
+--- klibc-2.0.3.orig/usr/klibc/arch/x86_64/MCONFIG	2013-12-03 10:53:46.000000000 -0800
++++ klibc-2.0.3/usr/klibc/arch/x86_64/MCONFIG	2013-12-26 14:44:54.522128579 -0800
+@@ -37,3 +37,6 @@
+ 
+ # Asm includes for x86_64 are in the merged x86 tree
+-KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/x86/include
++KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/x86/include/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/x86/include/generated/uapi \
++                    -I$(KLIBCKERNELOBJ)/arch/x86/include/generated \
++                    -I$(KLIBCKERNELOBJ)/arch/x86/include
diff --git a/dev-libs/klibc/files/klibc.m4 b/dev-libs/klibc/files/klibc.m4
new file mode 100644
index 00000000..38922697
--- /dev/null
+++ b/dev-libs/klibc/files/klibc.m4
@@ -0,0 +1,94 @@
+# klibc.m4 serial 99
+## Copyright (C) 1995-2003 Free Software Foundation, Inc.
+## This file is free software, distributed under the terms of the GNU
+## General Public License.  As a special exception to the GNU General
+## Public License, this file may be distributed as part of a program
+## that contains a configuration script generated by Autoconf, under
+## the same distribution terms as the rest of that program.
+##
+## This file can can be used in projects which are not available under
+## the GNU General Public License or the GNU Library General Public
+## License but which still want to provide support for the GNU gettext
+## functionality.
+## Please note that the actual code of the KLIBC Library is partly covered
+## by the GNU Library General Public License, and party copyrighted by the
+## Regents of The University of California, and the rest is covered by a
+## MIT style license. 
+
+# Authors:
+#   Martin Schlemmer <azarah@nosferatu.za.org>, 2005.
+
+
+# AC_CHECK_KLIBC
+# --------------
+# Check if the user wants KLIBC support enabled.  If so, set KLIBC=yes and
+# fill in KLIBC_PREFIX, KLIBC_BINDIR, KLIBC_SBINDIR, KLIBC_LIBDIR and
+# KLIBC_INCLUDEDIR.  CC is also set to the proper klcc executable.
+# NOTE:  This should be called before AC_PROG_CC, and before header, function
+#        or type checks.
+AC_DEFUN([AC_CHECK_KLIBC],
+[AC_BEFORE([$0], [AC_PROG_CC])
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_ARG_ENABLE([klibc],
+              [AS_HELP_STRING([--enable-klibc],
+                              [Enable linking to klibc [no].  You need at
+                               least klibc-1.0 or later for this.  Set KLCC
+                               to the absolute file name of klcc if not in
+                               the PATH])],
+              [KLIBC=$enableval], [KLIBC=no])
+AC_ARG_ENABLE([klibc-layout],
+              [AS_HELP_STRING([--enable-klibc-layout],
+                              [Enable installing binaries, libraries and
+                               headers into the klibc prefix [yes] ])],
+              [if test "X$KLIBC" != Xno; then
+                 KLIBC_LAYOUT=$enableval
+               else
+                 KLIBC_LAYOUT=no
+               fi],
+              [if test "X$KLIBC" != Xno; then
+                 KLIBC_LAYOUT=yes
+               else
+                 KLIBC_LAYOUT=no
+               fi])
+
+if test "X$KLIBC" != Xno; then
+  # Basic cross compiling support.  I do not think it is wise to use
+  # AC_CHECK_TOOL, because if we are cross compiling, we do not want
+  # just 'klcc' to be returned ...
+  if test "${host_alias}" != "${build_alias}"; then
+    AC_CHECK_PROGS([KLCC], [${host_alias}-klcc], [no])
+  else
+    AC_CHECK_PROGS([KLCC], [klcc], [no])
+  fi
+  if test "X$KLCC" = Xno; then
+    AC_MSG_ERROR([cannot find klibc frontend 'klcc'!])
+  fi
+
+  CC="$KLCC"
+  CFLAGS="-Os"
+
+  KLIBC_KCROSS="$($KLCC -print-klibc-kcross 2>/dev/null)"
+  KLIBC_PREFIX="$($KLCC -print-klibc-prefix 2>/dev/null)"
+  KLIBC_BIN_DIR="$($KLCC -print-klibc-bindir 2>/dev/null)"
+  KLIBC_SBIN_DIR="${KLIBC_PREFIX}/${KLIBC_KCROSS}sbin"
+  KLIBC_LIB_DIR="$($KLCC -print-klibc-libdir 2>/dev/null)"
+  KLIBC_INCLUDE_DIR="$($KLCC -print-klibc-includedir 2>/dev/null)"
+
+  if test "X$KLIBC_LAYOUT" != Xno; then
+    prefix="$KLIBC_PREFIX"
+    bindir="$KLIBC_BIN_DIR"
+    sbindir="$KLIBC_SBIN_DIR"
+    libdir="$KLIBC_LIB_DIR"
+    includedir="$KLIBC_INCLUDE_DIR"
+  fi
+
+  # At least KLIBC_LIB_DIR should be valid, else klibc is too old or
+  # something went wrong
+  if test ! -d "$KLIBC_LIB_DIR"; then
+    AC_MSG_ERROR([your klibc installation is too old or not functional!])
+  fi
+fi
+
+AC_SUBST(KLIBC)
+])# AC_CHECK_KLIBC
+
diff --git a/dev-libs/klibc/klibc-2.0.4-r1.ebuild b/dev-libs/klibc/klibc-2.0.4-r1.ebuild
new file mode 100644
index 00000000..a99f63a5
--- /dev/null
+++ b/dev-libs/klibc/klibc-2.0.4-r1.ebuild
@@ -0,0 +1,321 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# Robin H. Johnson <robbat2@gentoo.org>, 12 Nov 2007:
+# This still needs major work.
+# But it is significently better than the previous version.
+# In that it will now build on biarch systems, such as ppc64-32ul.
+
+# NOTES:
+# ======
+# We need to bring in the kernel sources seperately
+# Because they have to be configured in a way that differs from the copy in
+# /usr/src/. The sys-kernel/linux-headers are too stripped down to use
+# unfortunately.
+# This will be able to go away once the klibc author updates his code
+# to build again the headers provided by the kernel's 'headers_install' target.
+
+EAPI=5
+K_TARBALL_SUFFIX="xz"
+
+inherit eutils multilib toolchain-funcs flag-o-matic
+
+DESCRIPTION="A minimal libc subset for use with initramfs"
+HOMEPAGE="http://www.zytor.com/mailman/listinfo/klibc/ https://www.kernel.org/pub/linux/libs/klibc/"
+KV_MAJOR="3" KV_MINOR="x"
+if [[ $(gcc-major-version) -gt 4 ]]; then
+	KV_SUB="18"
+else
+	KV_SUB="12"
+fi
+PKV_EXTRA=""
+if [[ ${PKV_EXTRA} ]]; then
+	if [[ ${KV_MAJOR} == 2 ]]; then
+		PKV="${KV_MAJOR}.${KV_MINOR}.$((${KV_SUB}+1))-${PKV_EXTRA}"
+	else
+		PKV="${KV_MAJOR}.$((${KV_SUB}+1))-${PKV_EXTRA}"
+	fi
+	PATCH_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/patch-${PKV}.${K_TARBALL_SUFFIX}"
+fi
+if [[ ${KV_MAJOR} == 2 ]]; then
+	OKV="${KV_MAJOR}.${KV_MINOR}.${KV_SUB}"
+else
+	OKV="${KV_MAJOR}.${KV_SUB}"
+fi
+KERNEL_URI="
+	mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/linux-${OKV}.tar.${K_TARBALL_SUFFIX}
+	mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/testing/linux-${OKV}.tar.${K_TARBALL_SUFFIX}"
+DEBIAN_PV=2.0.2
+DEBIAN_PR=1
+DEBIAN_A="${PN}_${DEBIAN_PV}-${DEBIAN_PR}.debian.tar.gz"
+SRC_URI="
+	mirror://kernel/linux/libs/klibc/${PV:0:3}/${P}.tar.${K_TARBALL_SUFFIX}
+	mirror://debian/pool/main/k/klibc/${DEBIAN_A}
+	${PATCH_URI}
+	${KERNEL_URI}"
+
+LICENSE="|| ( GPL-2 LGPL-2 )"
+KEYWORDS="amd64 x86"
+SLOT="0"
+IUSE="debug test custom-cflags"
+
+DEPEND="dev-lang/perl"
+RDEPEND="${DEPEND}"
+
+KS="${WORKDIR}/linux-${OKV}"
+
+# Klibc has no PT_GNU_STACK support, so scanning for execstacks is moot
+QA_EXECSTACK="*"
+# Do not strip
+RESTRICT="strip"
+
+kernel_asm_arch() {
+	a="${1:${ARCH}}"
+	case ${a} in
+		# Merged arches
+		x86) echo i386 ;; # for build on x86 userspace & 64bit kernel
+		amd64) echo x86 ;;
+		ppc*) echo powerpc ;;
+		# Non-merged
+		alpha|arm|arm64|ia64|m68k|mips|sh|sparc*) echo ${1} ;;
+		*) die "TODO: Update the code for your asm-ARCH symlink" ;;
+	esac
+}
+
+# For a given Gentoo ARCH,
+# specify the kernel defconfig most relevant
+kernel_defconfig() {
+	a="${1:${ARCH}}"
+	# most, but not all arches have a sanely named defconfig
+	case ${a} in
+		ppc64) echo ppc64_defconfig ;;
+		ppc) echo pmac32_defconfig ;;
+		sh*) die "TODO: Your arch is not supported by the klibc ebuild. Please suggest a defconfig in a bug." ;;
+		*) echo defconfig ;;
+	esac
+}
+
+src_unpack() {
+	unpack linux-${OKV}.tar.${K_TARBALL_SUFFIX} ${P}.tar.${K_TARBALL_SUFFIX} ${DEBIAN_A}
+}
+
+src_prepare() {
+	[[ ${PKV} ]] && EPATCH_OPTS="-d ${KS} -p1" epatch "${DISTDIR}"/patch-${PKV}.${K_TARBALL_SUFFIX}
+	cd "${S}"
+
+	# Symlink /usr/src/linux to ${S}/linux
+	ln -snf "${KS}" linux
+	#ln -snf "/usr" linux
+
+	# Build interp.o with EXTRA_KLIBCAFLAGS (.S source)
+	epatch "${FILESDIR}"/${PN}-1.4.11-interp-flags.patch
+
+	# Fix usage of -s, bug #201006
+	epatch "${FILESDIR}"/klibc-1.5.7-strip-fix-dash-s.patch
+
+	# The inline definition from sys/stat.h does not seem to get used
+	# So just copy it to  make this compile for now
+	epatch "${FILESDIR}"/klibc-2.0.2-mkfifo.patch
+
+	# Newer kernels have some headers in the uapi dir
+	epatch "${FILESDIR}"/klibc-2.0.3-kernel-uapi.patch
+
+	# Borrow the debian fixes too
+	for p in $(<"${S}"/debian/patches/series) ; do
+		epatch "${S}/debian/patches/${p}"
+	done
+}
+
+# klibc has it's own ideas of arches
+# They reflect userspace strictly.
+# This functions maps from a Gentoo ARCH, to an arch that klibc expects
+# Look at klibc-${S}/usr/klibc/arch for a list of these arches
+klibc_arch() {
+	a="${1:${ARCH}}"
+	case ${a} in
+		amd64) echo x86_64;;
+		mips) die 'TODO: Use the $ABI' ;;
+		x86) echo i386;;
+		*) echo ${a} ;;
+	esac
+}
+
+src_compile() {
+	local myargs="all"
+	local myARCH="${ARCH}" myABI="${ABI}"
+	# TODO: For cross-compiling
+	# You should set ARCH and ABI here
+	CC="$(tc-getCC)"
+	LD="$(tc-getLD)"
+	HOSTCC="$(tc-getBUILD_CC)"
+	HOSTLD="$(tc-getBUILD_LD)"
+	KLIBCARCH="$(klibc_arch ${ARCH})"
+	KLIBCASMARCH="$(kernel_asm_arch ${ARCH})"
+	libdir="$(get_libdir)"
+	# This should be the defconfig corresponding to your userspace!
+	# NOT your kernel. PPC64-32ul would choose 'ppc' for example.
+	defconfig=$(kernel_defconfig ${ARCH})
+	unset ABI ARCH # Unset these, because they interfere
+	unset KBUILD_OUTPUT # we are using a private copy
+
+	cd "${KS}"
+	emake ${defconfig} CC="${CC}" HOSTCC="${HOSTCC}" ARCH="${KLIBCASMARCH}" || die "No defconfig"
+	if [[ "${KLIBCARCH/arm}" != "${KLIBCARCH}" ]] && \
+	   [[ "${CHOST/eabi}" != "${CHOST}" ]]; then
+		# The delete and insert are seperate statements
+		# so that they are reliably used.
+		sed -i \
+		-e '/CONFIG_AEABI/d' \
+		-e '1iCONFIG_AEABI=y' \
+		-e '/CONFIG_OABI_COMPAT/d' \
+		-e '1iCONFIG_OABI_COMPAT=y' \
+		"${KS}"/.config \
+		"${S}"/defconfig
+	fi
+	emake prepare CC="${CC}" HOSTCC="${HOSTCC}" ARCH="${KLIBCASMARCH}" || die "Failed to prepare kernel sources for header usage"
+
+	cd "${S}"
+
+	use debug && myargs="${myargs} V=1"
+	use test && myargs="${myargs} test"
+	append-ldflags -z noexecstack
+	append-flags -nostdlib
+
+	emake \
+		EXTRA_KLIBCAFLAGS="-Wa,--noexecstack" \
+		EXTRA_KLIBCLDFLAGS="-z noexecstack" \
+		HOSTLDFLAGS="-z noexecstack" \
+		KLIBCOPTFLAGS='-nostdlib' \
+		HOSTCC="${HOSTCC}" CC="${CC}" \
+		HOSTLD="${HOSTLD}" LD="${LD}" \
+		INSTALLDIR="/usr/${libdir}/klibc" \
+		KLIBCARCH=${KLIBCARCH} \
+		KLIBCASMARCH=${KLIBCASMARCH} \
+		SHLIBDIR="/${libdir}" \
+		libdir="/usr/${libdir}" \
+		mandir="/usr/share/man" \
+		T="${T}" \
+		$(use custom-cflags || echo SKIP_)HOSTCFLAGS="${CFLAGS}" \
+		$(use custom-cflags || echo SKIP_)HOSTLDFLAGS="${LDFLAGS}" \
+		$(use custom-cflags || echo SKIP_)KLIBCOPTFLAGS="${CFLAGS}" \
+		${myargs} || die "Compile failed!"
+
+		#SHLIBDIR="/${libdir}" \
+
+	ARCH="${myARCH}" ABI="${myABI}"
+}
+
+src_install() {
+	local myargs
+	local myARCH="${ARCH}" myABI="${ABI}"
+	# TODO: For cross-compiling
+	# You should set ARCH and ABI here
+	CC="$(tc-getCC)"
+	HOSTCC="$(tc-getBUILD_CC)"
+	KLIBCARCH="$(klibc_arch ${ARCH})"
+	KLIBCASMARCH="$(kernel_asm_arch ${ARCH})"
+	libdir="$(get_libdir)"
+	# This should be the defconfig corresponding to your userspace!
+	# NOT your kernel. PPC64-32ul would choose 'ppc' for example.
+	defconfig=$(kernel_defconfig ${ARCH})
+
+	use debug && myargs="${myargs} V=1"
+
+	local klibc_prefix
+	if tc-is-cross-compiler ; then
+		klibc_prefix=$("${S}/klcc/${KLIBCARCH}-klcc" -print-klibc-prefix)
+	else
+		klibc_prefix=$("${S}/klcc/klcc" -print-klibc-prefix)
+	fi
+
+	unset ABI ARCH # Unset these, because they interfere
+	unset KBUILD_OUTPUT # we are using a private copy
+
+	emake \
+		EXTRA_KLIBCAFLAGS="-Wa,--noexecstack" \
+		EXTRA_KLIBCLDFLAGS="-z noexecstack" \
+		HOSTLDFLAGS="-z noexecstack" \
+		KLIBCOPTFLAGS='-nostdlib' \
+		HOSTCC="${HOSTCC}" CC="${CC}" \
+		HOSTLD="${HOSTLD}" LD="${LD}" \
+		INSTALLDIR="/usr/${libdir}/klibc" \
+		INSTALLROOT="${D}" \
+		KLIBCARCH=${KLIBCARCH} \
+		KLIBCASMARCH=${KLIBCASMARCH} \
+		SHLIBDIR="/${libdir}" \
+		libdir="/usr/${libdir}" \
+		mandir="/usr/share/man" \
+		T="${T}" \
+		$(use custom-cflags || echo SKIP_)HOSTCFLAGS="${CFLAGS}" \
+		$(use custom-cflags || echo SKIP_)HOSTLDFLAGS="${LDFLAGS}" \
+		$(use custom-cflags || echo SKIP_)KLIBCOPTFLAGS="${CFLAGS}" \
+		${myargs} \
+		install || die "Install failed!"
+
+		#SHLIBDIR="/${libdir}" \
+
+	# klibc doesn't support prelinking, so we need to mask it
+	cat > "${T}/70klibc" <<-EOF
+		PRELINK_PATH_MASK="/usr/${libdir}/klibc"
+	EOF
+
+	doenvd "${T}"/70klibc
+
+	# Fix the permissions (bug #178053) on /usr/${libdir}/klibc/include
+	# Actually I have no idea, why the includes have those weird-ass permissions
+	# on a particular system, might be due to inherited permissions from parent
+	# directory
+	find "${D}"/usr/${libdir}/klibc/include | xargs chmod o+rX
+	find "${D}"/usr/${libdir}/klibc/include -type f \
+		\( -name '.install' -o -name '..install.cmd' \) -delete || die
+
+	# Hardlinks becoming copies
+	for x in gunzip zcat ; do
+		rm -f "${D}/${klibc_prefix}/bin/${x}"
+		dosym gzip "${klibc_prefix}/bin/${x}"
+	done
+
+	# Restore now, so we can use the tc- functions
+	ARCH="${myARCH}" ABI="${myABI}"
+	if ! tc-is-cross-compiler ; then
+		cd "${S}"
+		insinto /usr/share/aclocal
+		doins contrib/klibc.m4
+
+		dodoc README usr/klibc/CAVEATS
+		docinto gzip; dodoc usr/gzip/README
+	fi
+
+	# Fix up the symlink
+	# Mainly for merged arches
+	linkname="${D}/usr/${libdir}/klibc/include/asm"
+	if [ -L "${linkname}" ] && [ ! -e "${linkname}" ] ; then
+		ln -snf asm-${KLIBCASMARCH} "${linkname}"
+	fi
+}
+
+src_test() {
+	if ! tc-is-cross-compiler ; then
+		cd "${S}"/usr/klibc/tests
+		ALL_TESTS="$(ls *.c |sed 's,\.c$,,g')"
+		BROKEN_TESTS="fcntl fnmatch testrand48"
+		failed=0
+		for t in $ALL_TESTS ; do
+			if has $t $BROKEN_TESTS ; then
+				echo "=== $t SKIP"
+			else
+				echo -n "=== $t "
+				./$t </dev/null >/dev/null
+				rc=$?
+				if [ $rc -eq 0 ]; then
+					echo PASS
+				else
+					echo FAIL
+					failed=1
+				fi
+			fi
+		done
+		[ $failed -ne 0 ] && die "Some tests failed."
+	fi
+}