syslinux: upgrade to versin 3.86

from version 3.36
partly based on the recipe from openembedded project

changes:
  - add cross-build.patch to use poky toolchain
  - mangle LDFLAGS so $LD invocation works
  - use precompiled version of $BTARGET for target (OE)
  - stick on ${sbindir} instead of OE's ${base_sbindir}

Signed-off-by: Qing He <qing.he@intel.com>

meta/packages/syslinux/syslinux_3.86.bb

@@ -0,0 +1,47 @@
+DESCRIPTION = "A multi-purpose linux bootloader"
+HOMEPAGE = "http://syslinux.zytor.com/"
+LICENSE = "GPLv2+"
+LIC_FILES_CHKSUM = "file://COPYING;md5=0636e73ff0215e8d672dc4c32c317bb3 \
+                    file://README;beginline=28;endline=34;md5=a4607efd4a6392017186d08099e7d546"
+
+# If you really want to run syslinux, you need mtools.  We just want the
+# ldlinux.* stuff for now, so skip mtools-native
+DEPENDS = "nasm-native"
+PR = "r0"
+
+SRC_URI = "${KERNELORG_MIRROR}/pub/linux/utils/boot/syslinux/syslinux-${PV}.tar.bz2 \
+           file://cross-build.patch"
+
+COMPATIBLE_HOST = '(x86_64|i.86.*)-(linux|freebsd.*)'
+
+EXTRA_OEMAKE = " \
+	BINDIR=${bindir} SBINDIR=${sbindir} LIBDIR=${libdir} \
+	DATADIR=${datadir} MANDIR=${mandir} INCDIR=${includedir} \
+"
+# syslinux uses $LD for linking, strip `-Wl,' so it can work
+export LDFLAGS = "`echo $LDFLAGS | sed 's/-Wl,//g'`"
+
+do_configure() {
+	# drop win32 targets or build fails
+	sed -e 's,win32/\S*,,g' -i Makefile
+
+	# clean installer executables included in source tarball
+	oe_runmake clean
+}
+
+do_compile() {
+	# Rebuild only the installer; keep precompiled bootloaders
+	# as per author's request (doc/distrib.txt)
+	oe_runmake CC="${CC}" installer
+}
+
+NATIVE_INSTALL_WORKS = "1"
+do_install() {
+	oe_runmake install INSTALLROOT="${D}"
+
+	install -d ${D}${libdir}/syslinux/
+	install -m 644 ${S}/core/ldlinux.sys ${D}${libdir}/syslinux/
+	install -m 644 ${S}/core/ldlinux.bss ${D}${libdir}/syslinux/
+}
+
+BBCLASSEXTEND = "native"