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114 lines
3.8 KiB
114 lines
3.8 KiB
2 years ago
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################################################################################
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#
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# syslinux to make target msdos/iso9660 filesystems bootable
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#
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################################################################################
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SYSLINUX_VERSION = 6.03
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SYSLINUX_SOURCE = syslinux-$(SYSLINUX_VERSION).tar.xz
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SYSLINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/boot/syslinux
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SYSLINUX_LICENSE = GPL-2.0+
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SYSLINUX_LICENSE_FILES = COPYING
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SYSLINUX_INSTALL_IMAGES = YES
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# host-util-linux needed to provide libuuid when building host tools
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SYSLINUX_DEPENDENCIES = \
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host-nasm \
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host-python3 \
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host-upx \
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host-util-linux \
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util-linux
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ifeq ($(BR2_TARGET_SYSLINUX_LEGACY_BIOS),y)
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SYSLINUX_TARGET += bios
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endif
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# The syslinux build system must be forced to use Buildroot's gnu-efi
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# package by setting EFIINC, LIBDIR and LIBEFI. Otherwise, it uses its
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# own copy of gnu-efi included in syslinux's sources since 6.03
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# release.
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ifeq ($(BR2_TARGET_SYSLINUX_EFI),y)
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ifeq ($(BR2_ARCH_IS_64),y)
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SYSLINUX_EFI_BITS = efi64
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else
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SYSLINUX_EFI_BITS = efi32
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endif # 64-bit
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SYSLINUX_DEPENDENCIES += gnu-efi
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SYSLINUX_TARGET += $(SYSLINUX_EFI_BITS)
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SYSLINUX_EFI_ARGS = \
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EFIINC=$(STAGING_DIR)/usr/include/efi \
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LIBDIR=$(STAGING_DIR)/usr/lib \
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LIBEFI=$(STAGING_DIR)/usr/lib/libefi.a
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endif # EFI
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# The syslinux tarball comes with pre-compiled binaries.
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# Since timestamps might not be in the correct order, a rebuild is
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# not always triggered for all the different images.
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# Cleanup the mess even before we attempt a build, so we indeed
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# build everything from source.
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define SYSLINUX_CLEANUP
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rm -rf $(@D)/bios $(@D)/efi32 $(@D)/efi64
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endef
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SYSLINUX_POST_PATCH_HOOKS += SYSLINUX_CLEANUP
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# syslinux build system has no convenient way to pass CFLAGS,
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# and the internal zlib should take precedence so -I shouldn't
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# be used.
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define SYSLINUX_BUILD_CMDS
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$(TARGET_MAKE_ENV) $(MAKE1) \
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CC="$(TARGET_CC)" \
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LD="$(TARGET_LD)" \
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OBJCOPY="$(TARGET_OBJCOPY)" \
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AS="$(TARGET_AS)" \
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NASM="$(HOST_DIR)/bin/nasm" \
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CC_FOR_BUILD="$(HOSTCC)" \
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CFLAGS_FOR_BUILD="$(HOST_CFLAGS)" \
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LDFLAGS_FOR_BUILD="$(HOST_LDFLAGS)" \
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PYTHON=$(HOST_DIR)/bin/python3 \
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$(SYSLINUX_EFI_ARGS) -C $(@D) $(SYSLINUX_TARGET)
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endef
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# While the actual bootloader is compiled for the target, several
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# utilities for installing the bootloader are meant for the host.
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# Repeat the target, otherwise syslinux will try to build everything
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# Repeat LD (and CC) as it happens that some binaries are linked at
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# install-time.
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define SYSLINUX_INSTALL_TARGET_CMDS
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$(TARGET_MAKE_ENV) $(MAKE1) $(SYSLINUX_EFI_ARGS) INSTALLROOT=$(HOST_DIR) \
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CC="$(TARGET_CC)" \
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LD="$(TARGET_LD)" \
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-C $(@D) $(SYSLINUX_TARGET) install
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endef
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# That 'syslinux' binary is an installer actually built for the target.
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# However, buildroot makes no usage of it, so better delete it than have it
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# installed at the wrong place
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define SYSLINUX_POST_INSTALL_CLEANUP
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rm -rf $(HOST_DIR)/bin/syslinux
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endef
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SYSLINUX_POST_INSTALL_TARGET_HOOKS += SYSLINUX_POST_INSTALL_CLEANUP
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SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_ISOLINUX) += bios/core/isolinux.bin
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SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_PXELINUX) += bios/core/pxelinux.bin
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SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_MBR) += bios/mbr/mbr.bin
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SYSLINUX_IMAGES-$(BR2_TARGET_SYSLINUX_EFI) += $(SYSLINUX_EFI_BITS)/efi/syslinux.efi
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SYSLINUX_C32 = $(call qstrip,$(BR2_TARGET_SYSLINUX_C32))
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# We install the c32 modules from the host-installed tree, where they
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# are all neatly installed in a single location, while they are
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# scattered around everywhere in the build tree.
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define SYSLINUX_INSTALL_IMAGES_CMDS
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for i in $(SYSLINUX_IMAGES-y); do \
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$(INSTALL) -D -m 0755 $(@D)/$$i $(BINARIES_DIR)/syslinux/$${i##*/}; \
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done
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for i in $(SYSLINUX_C32); do \
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$(INSTALL) -D -m 0755 $(HOST_DIR)/share/syslinux/$${i} \
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$(BINARIES_DIR)/syslinux/$${i}; \
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done
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endef
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$(eval $(generic-package))
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