################################################################################
  #
  # syslinux to make target msdos/iso9660 filesystems bootable
  #
  ################################################################################
  
  SYSLINUX_VERSION = 6.03
  SYSLINUX_SOURCE = syslinux-$(SYSLINUX_VERSION).tar.xz
  SYSLINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/boot/syslinux
  
  SYSLINUX_LICENSE = GPLv2+
  SYSLINUX_LICENSE_FILES = COPYING
  
  SYSLINUX_INSTALL_IMAGES = YES
  
  SYSLINUX_DEPENDENCIES = host-nasm host-util-linux host-upx
  
  ifeq ($(BR2_TARGET_SYSLINUX_LEGACY_BIOS),y)
  SYSLINUX_TARGET += bios
  endif
  
  # The syslinux build system must be forced to use Buildroot's gnu-efi
  # package by setting EFIINC, LIBDIR and LIBEFI. Otherwise, it uses its
  # own copy of gnu-efi included in syslinux's sources since 6.03
  # release.
  ifeq ($(BR2_TARGET_SYSLINUX_EFI),y)
  ifeq ($(BR2_ARCH_IS_64),y)
  SYSLINUX_EFI_BITS = efi64
  else
  SYSLINUX_EFI_BITS = efi32
  endif # 64-bit
  SYSLINUX_DEPENDENCIES += gnu-efi
  SYSLINUX_TARGET += $(SYSLINUX_EFI_BITS)
  SYSLINUX_EFI_ARGS = \
  	EFIINC=$(STAGING_DIR)/usr/include/efi \
  	LIBDIR=$(STAGING_DIR)/usr/lib \
  	LIBEFI=$(STAGING_DIR)/usr/lib/libefi.a
  endif # EFI
  
  # The syslinux tarball comes with pre-compiled binaries.
  # Since timestamps might not be in the correct order, a rebuild is
  # not always triggered for all the different images.
  # Cleanup the mess even before we attempt a build, so we indeed
  # build everything from source.
  define SYSLINUX_CLEANUP
  	rm -rf $(@D)/bios $(@D)/efi32 $(@D)/efi64
  endef
  SYSLINUX_POST_PATCH_HOOKS += SYSLINUX_CLEANUP
  
  # syslinux build system has no convenient way to pass CFLAGS,
  # and the internal zlib should take precedence so -I shouldn't
  # be used.
  define SYSLINUX_BUILD_CMDS
  	$(TARGET_MAKE_ENV) $(MAKE1) CC="$(HOSTCC) -idirafter $(HOST_DIR)/usr/include $(HOST_LDFLAGS)" \
  		AR="$(HOSTAR)" $(SYSLINUX_EFI_ARGS) -C $(@D) $(SYSLINUX_TARGET)
  endef
  
  # While the actual bootloader is compiled for the target, several
  # utilities for installing the bootloader are meant for the host.
  # Repeat the target, otherwise syslinux will try to build everything
  # Repeat CC and AR, since syslinux really wants to check them at
  # install time
  define SYSLINUX_INSTALL_TARGET_CMDS
  	$(TARGET_MAKE_ENV) $(MAKE1) CC="$(HOSTCC) -idirafter $(HOST_DIR)/usr/include $(HOST_LDFLAGS)" \
  		AR="$(HOSTAR)" $(SYSLINUX_EFI_ARGS) INSTALLROOT=$(HOST_DIR) \
  		-C $(@D) $(SYSLINUX_TARGET) install
  endef
  
  SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_ISOLINUX) += bios/core/isolinux.bin
  SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_PXELINUX) += bios/core/pxelinux.bin
  SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_MBR) += bios/mbr/mbr.bin
  SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_EFI) += $(SYSLINUX_EFI_BITS)/efi/syslinux.efi
  
  SYSLINUX_C32 = $(call qstrip,$(BR2_TARGET_SYSLINUX_C32))
  
  # We install the c32 modules from the host-installed tree, where they
  # are all neatly installed in a single location, while they are
  # scattered around everywhere in the build tree.
  define SYSLINUX_INSTALL_IMAGES_CMDS
  	for i in $(SYSLINUX_IMAGES-y); do \
  		$(INSTALL) -D -m 0755 $(@D)/$$i $(BINARIES_DIR)/syslinux/$${i##*/}; \
  	done
  	for i in $(SYSLINUX_C32); do \
  		$(INSTALL) -D -m 0755 $(HOST_DIR)/usr/share/syslinux/$${i} \
  			$(BINARIES_DIR)/syslinux/$${i}; \
  	done
  endef
  
  $(eval $(generic-package))