boot/syslinux/syslinux.mk

   1 ################################################################################
   2 #
   3 # syslinux to make target msdos/iso9660 filesystems bootable
   4 #
   5 ################################################################################
   6
   7 SYSLINUX_VERSION = 6.03
   8 SYSLINUX_SOURCE = syslinux-$(SYSLINUX_VERSION).tar.xz
   9 SYSLINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/boot/syslinux
  10
  11 SYSLINUX_LICENSE = GPLv2+
  12 SYSLINUX_LICENSE_FILES = COPYING
  13
  14 SYSLINUX_INSTALL_IMAGES = YES
  15
  16 SYSLINUX_DEPENDENCIES = host-nasm host-util-linux host-upx
  17
  18 ifeq ($(BR2_TARGET_SYSLINUX_LEGACY_BIOS),y)
  19 SYSLINUX_TARGET += bios
  20 endif
  21
  22 # The syslinux build system must be forced to use Buildroot's gnu-efi
  23 # package by setting EFIINC, LIBDIR and LIBEFI. Otherwise, it uses its
  24 # own copy of gnu-efi included in syslinux's sources since 6.03
  25 # release.
  26 ifeq ($(BR2_TARGET_SYSLINUX_EFI),y)
  27 ifeq ($(BR2_ARCH_IS_64),y)
  28 SYSLINUX_EFI_BITS = efi64
  29 else
  30 SYSLINUX_EFI_BITS = efi32
  31 endif # 64-bit
  32 SYSLINUX_DEPENDENCIES += gnu-efi
  33 SYSLINUX_TARGET += $(SYSLINUX_EFI_BITS)
  34 SYSLINUX_EFI_ARGS = \
  35         EFIINC=$(STAGING_DIR)/usr/include/efi \
  36         LIBDIR=$(STAGING_DIR)/usr/lib \
  37         LIBEFI=$(STAGING_DIR)/usr/lib/libefi.a
  38 endif # EFI
  39
  40 # The syslinux tarball comes with pre-compiled binaries.
  41 # Since timestamps might not be in the correct order, a rebuild is
  42 # not always triggered for all the different images.
  43 # Cleanup the mess even before we attempt a build, so we indeed
  44 # build everything from source.
  45 define SYSLINUX_CLEANUP
  46         rm -rf $(@D)/bios $(@D)/efi32 $(@D)/efi64
  47 endef
  48 SYSLINUX_POST_PATCH_HOOKS += SYSLINUX_CLEANUP
  49
  50 # syslinux build system has no convenient way to pass CFLAGS,
  51 # and the internal zlib should take precedence so -I shouldn't
  52 # be used.
  53 define SYSLINUX_BUILD_CMDS
  54         $(TARGET_MAKE_ENV) $(MAKE1) CC="$(HOSTCC) -idirafter $(HOST_DIR)/usr/include $(HOST_LDFLAGS)" \
  55                 AR="$(HOSTAR)" $(SYSLINUX_EFI_ARGS) -C $(@D) $(SYSLINUX_TARGET)
  56 endef
  57
  58 # While the actual bootloader is compiled for the target, several
  59 # utilities for installing the bootloader are meant for the host.
  60 # Repeat the target, otherwise syslinux will try to build everything
  61 # Repeat CC and AR, since syslinux really wants to check them at
  62 # install time
  63 define SYSLINUX_INSTALL_TARGET_CMDS
  64         $(TARGET_MAKE_ENV) $(MAKE1) CC="$(HOSTCC) -idirafter $(HOST_DIR)/usr/include $(HOST_LDFLAGS)" \
  65                 AR="$(HOSTAR)" $(SYSLINUX_EFI_ARGS) INSTALLROOT=$(HOST_DIR) \
  66                 -C $(@D) $(SYSLINUX_TARGET) install
  67 endef
  68
  69 SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_ISOLINUX) += bios/core/isolinux.bin
  70 SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_PXELINUX) += bios/core/pxelinux.bin
  71 SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_MBR) += bios/mbr/mbr.bin
  72 SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_EFI) += $(SYSLINUX_EFI_BITS)/efi/syslinux.efi
  73
  74 SYSLINUX_C32 = $(call qstrip,$(BR2_TARGET_SYSLINUX_C32))
  75
  76 # We install the c32 modules from the host-installed tree, where they
  77 # are all neatly installed in a single location, while they are
  78 # scattered around everywhere in the build tree.
  79 define SYSLINUX_INSTALL_IMAGES_CMDS
  80         for i in $(SYSLINUX_IMAGES-y); do \
  81                 $(INSTALL) -D -m 0755 $(@D)/$$i $(BINARIES_DIR)/syslinux/$${i##*/}; \
  82         done
  83         for i in $(SYSLINUX_C32); do \
  84                 $(INSTALL) -D -m 0755 $(HOST_DIR)/usr/share/syslinux/$${i} \
  85                         $(BINARIES_DIR)/syslinux/$${i}; \
  86         done
  87 endef
  88
  89 $(eval $(generic-package))