add(sys-boot/syslinux): Custom ebuild with better dependencies.

- Depend on util-linux
- Optionally depend on perl, don't install perl scripts when disabled.

sdk_container/src/third_party/coreos-overlay/sys-boot/syslinux/Manifest

@@ -0,0 +1 @@
+DIST syslinux-4.07.tar.bz2 5761877 SHA256 1240a4e4219b518bdaef78931b6e901befeff35e6894ac6db785115848a7a05a SHA512 8efbd14803ec74c5ee699a754b4727e4b975c08afd4dbb39f4b7ccdb90743e4459cd4609c6f1065c7b7efaa26c9d465806254891795d363758f35a2fe5704ae5 WHIRLPOOL b68966ed87055a157812f36f2881b4a86797eacef1894b70c1a063327547264daa4b4ca1ea52ccb286ab86332c2163e57004d3503215497278e073b48583a9dc

sdk_container/src/third_party/coreos-overlay/sys-boot/syslinux/files/syslinux-4.05-nopie.patch

@@ -0,0 +1,12 @@
+diff -ur a/mk/com32.mk b/mk/com32.mk
+--- a/mk/com32.mk	2011-12-09 19:28:17.000000000 +0100
++++ b/mk/com32.mk	2011-12-18 18:22:11.032342645 +0100
+@@ -24,6 +24,8 @@
+ GCCOPT += $(call gcc_ok,-freg-struct-return,)
+ GCCOPT += -mregparm=3 -DREGPARM=3 -march=i386 -Os
+ GCCOPT += $(call gcc_ok,-fPIE,-fPIC)
++GCCOPT += $(call gcc_ok,-nopie,)
++GCCOPT += $(call gcc_ok,-fno-pie,)
+ GCCOPT += $(call gcc_ok,-fno-exceptions,)
+ GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,)
+ GCCOPT += $(call gcc_ok,-fno-strict-aliasing,)

sdk_container/src/third_party/coreos-overlay/sys-boot/syslinux/syslinux-4.07-r1.ebuild

@@ -0,0 +1,75 @@
+# Copyright 1999-2013 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-boot/syslinux/syslinux-4.07.ebuild,v 1.4 2013/09/23 11:56:54 jlec Exp $
+
+EAPI=5
+
+inherit eutils toolchain-funcs
+
+DESCRIPTION="SYSLINUX, PXELINUX, ISOLINUX, EXTLINUX and MEMDISK bootloaders"
+HOMEPAGE="http://syslinux.zytor.com/"
+SRC_URI="mirror://kernel/linux/utils/boot/syslinux/${PV:0:1}.xx/${P/_/-}.tar.bz2"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="-* amd64 x86"
+IUSE="custom-cflags +perl"
+
+RDEPEND="sys-apps/util-linux
+		sys-fs/mtools
+		perl? (
+			dev-lang/perl
+			dev-perl/Crypt-PasswdMD5
+			dev-perl/Digest-SHA1
+		)"
+DEPEND="${RDEPEND}
+	dev-lang/nasm
+	virtual/os-headers"
+
+S=${WORKDIR}/${P/_/-}
+
+src_unpack() {
+	unpack ${A}
+	cd "${S}"
+	# Fix building on hardened
+	epatch "${FILESDIR}"/${PN}-4.05-nopie.patch
+
+	# Don't prestrip or override user LDFLAGS, bug #305783
+	local SYSLINUX_MAKEFILES="extlinux/Makefile linux/Makefile mtools/Makefile \
+		sample/Makefile utils/Makefile"
+	sed -i ${SYSLINUX_MAKEFILES} -e '/^LDFLAGS/d' || die "sed failed"
+
+	if use custom-cflags; then
+		sed -i ${SYSLINUX_MAKEFILES} \
+			-e 's|-g -Os||g' \
+			-e 's|-Os||g' \
+			-e 's|CFLAGS[[:space:]]\+=|CFLAGS +=|g' \
+			|| die "sed custom-cflags failed"
+	else
+		QA_FLAGS_IGNORED="
+			/sbin/extlinux
+			/usr/bin/memdiskfind
+			/usr/bin/gethostip
+			/usr/bin/isohybrid
+			/usr/bin/syslinux
+			"
+	fi
+
+	# Don't build/install scripts if perl is disabled
+	if ! use perl; then
+		sed -i utils/Makefile \
+			-e 's/$(TARGETS)/$(C_TARGETS)/' \
+			-e 's/$(ASIS)//' \
+			|| die "sed remove perl failed"
+		rm man/{lss16toppm.1,ppmtolss16.1,syslinux2ansi.1} || die
+	fi
+}
+
+src_compile() {
+	emake CC=$(tc-getCC) installer
+}
+
+src_install() {
+	emake INSTALLSUBDIRS=utils INSTALLROOT="${D}" MANDIR=/usr/share/man install
+	dodoc README NEWS doc/*.txt
+}