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shredos.x86_64/fs/iso9660/iso9660.mk
desertwitch 554f1a965b feat(iso9660): complete refactor of filesystem 
The entire iso9660 filesystem folder was restructured to replace partially unreadable legacy code with modern, readable and modular structures. Hardcoded paths were replaced with variables, as much as possible, to make the code work with different setups. A mode "both" was added, producing Debian-style hybrid ISOs for both BIOS and EFI usage, while still allowing for flashing to USB and/or burning to CD/DVD-ROM. The configuration GUI (via "make menuconfig") was also refactored and adapted to the new changes.

Signed-off-by: desertwitch <24509509+desertwitch@users.noreply.github.com>
2025-11-18 07:40:08 +01:00

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################################################################################
#
# Build the ISO9660 root filesystem image
#
################################################################################
#
# We need to handle three cases:
#
# 1. The ISO9660 filesystem will really be the real root filesystem
# itself. This is when BR2_TARGET_ROOTFS_ISO9660_INITRD is
# disabled.
#
# 2. The ISO9660 filesystem will be a filesystem with just a kernel
# image, initrd and grub. This is when
# BR2_TARGET_ROOTFS_ISO9660_INITRD is enabled, but
# BR2_TARGET_ROOTFS_INITRAMFS is disabled.
#
# 3. The ISO9660 filesystem will be a filesystem with just a kernel
# image and grub. This is like (2), except that the initrd is
# built into the kernel image. This is when
# BR2_TARGET_ROOTFS_INITRAMFS is enabled (regardless of the value
# of BR2_TARGET_ROOTFS_ISO9660_INITRD).
#
################################################################################
# Configuration Variables
################################################################################
ROOTFS_ISO9660_DEPENDENCIES = host-xorriso linux
ROOTFS_ISO9660_GRUB2_BOOT_MENU = $(call qstrip,$(BR2_TARGET_ROOTFS_ISO9660_GRUB2_BOOT_MENU))
ROOTFS_ISO9660_GRUB2_EFI_BOOT_MENU = $(call qstrip,$(BR2_TARGET_ROOTFS_ISO9660_GRUB2_EFI_BOOT_MENU))
ROOTFS_ISO9660_GRUB2_EFI_PARTITION_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_ISO9660_GRUB2_EFI_PARTITION_SIZE))
ROOTFS_ISO9660_GRUB2_EFI_IDENT_FILE = $(call qstrip,$(BR2_TARGET_ROOTFS_ISO9660_GRUB2_EFI_IDENT_FILE))
ROOTFS_ISO9660_ISOLINUX_BOOT_MENU = $(call qstrip,$(BR2_TARGET_ROOTFS_ISO9660_ISOLINUX_BOOT_MENU))
################################################################################
# Architecture-specific variables
################################################################################
ifeq ($(BR2_ARCH_IS_64),y)
ROOTFS_ISO9660_EFI_NAME = bootx64.efi
ROOTFS_ISO9660_EFI_NOTNAME = bootia32.efi
ROOTFS_ISO9660_GRUB2_EFI_PREFIX = $(call qstrip,$(GRUB2_PREFIX_x86_64-efi))
else
ROOTFS_ISO9660_EFI_NAME = bootia32.efi
ROOTFS_ISO9660_EFI_NOTNAME = bootx64.efi
ROOTFS_ISO9660_GRUB2_EFI_PREFIX = $(call qstrip,$(GRUB2_PREFIX_i386-efi))
endif
################################################################################
# Determine if we're using initrd
################################################################################
ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y)
ROOTFS_ISO9660_USE_INITRD = YES
endif
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_INITRD),y)
ROOTFS_ISO9660_USE_INITRD = YES
endif
################################################################################
# Setup temporary target directory
################################################################################
ifeq ($(ROOTFS_ISO9660_USE_INITRD),YES)
# Using initrd: create minimal temporary directory
ROOTFS_ISO9660_TMP_TARGET_DIR = $(FS_DIR)/rootfs.iso9660.tmp
define ROOTFS_ISO9660_CREATE_TEMPDIR
$(RM) -rf $(ROOTFS_ISO9660_TMP_TARGET_DIR)
mkdir -p $(ROOTFS_ISO9660_TMP_TARGET_DIR)
endef
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_CREATE_TEMPDIR
else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION),y)
# Using transparent compression: create compressed tree
ROOTFS_ISO9660_DEPENDENCIES += host-zisofs-tools
ROOTFS_ISO9660_TMP_TARGET_DIR = $(FS_DIR)/rootfs.iso9660.tmp
define ROOTFS_ISO9660_MKZFTREE
$(RM) -rf $(ROOTFS_ISO9660_TMP_TARGET_DIR)
$(HOST_DIR)/bin/mkzftree -X -z 9 -p $(PARALLEL_JOBS) \
$(TARGET_DIR) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)
endef
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_MKZFTREE
ROOTFS_ISO9660_OPTS += -z
else
# Standard mode: use TARGET_DIR directly
ROOTFS_ISO9660_TMP_TARGET_DIR = $(TARGET_DIR)
endif
################################################################################
# Reproducible build support
################################################################################
ifeq ($(BR2_REPRODUCIBLE),y)
ROOTFS_ISO9660_VFAT_OPTS = --invariant
ROOTFS_ISO9660_FIX_TIME = touch -d @$(SOURCE_DATE_EPOCH)
else
ROOTFS_ISO9660_FIX_TIME = :
endif
################################################################################
# GRUB2 BIOS Bootloader Configuration
################################################################################
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2)$(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER),yy)
ROOTFS_ISO9660_DEPENDENCIES += grub2
ROOTFS_ISO9660_GRUB2_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
ROOTFS_ISO9660_BOOT_IMAGE = boot/grub/grub-eltorito.img
define ROOTFS_ISO9660_INSTALL_GRUB2_BIOS
$(INSTALL) -D -m 0644 $(BINARIES_DIR)/grub-eltorito.img \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub-eltorito.img
endef
define ROOTFS_ISO9660_INSTALL_GRUB2_CONFIG
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_BOOT_MENU) \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH)
endef
endif
################################################################################
# GRUB2 EFI Bootloader Configuration
################################################################################
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2)$(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),yy)
ROOTFS_ISO9660_DEPENDENCIES += grub2 host-dosfstools host-mtools
ROOTFS_ISO9660_EFI_PARTITION = boot/efi.img
ROOTFS_ISO9660_EFI_PARTITION_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_EFI_PARTITION)
ROOTFS_ISO9660_EFI_PARTITION_CONTENT = $(BINARIES_DIR)/efi-part
ROOTFS_ISO9660_GRUB2_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/efigrub.cfg
define ROOTFS_ISO9660_INSTALL_GRUB2_EFI
# Create identification file to better find ISO9660 filesystem
$(INSTALL) -D -m 0644 /dev/null \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_GRUB2_EFI_IDENT_FILE)
# Copy grub.cfg to ISO9660 filesystem where GRUB will find it
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_CONFIG_PATH) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/grub.cfg
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/$(ROOTFS_ISO9660_EFI_NAME) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/$(ROOTFS_ISO9660_EFI_NAME)
# Create EFI FAT partition
rm -rf $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
mkdir -p $(dir $(ROOTFS_ISO9660_EFI_PARTITION_PATH))
dd if=/dev/zero of=$(ROOTFS_ISO9660_EFI_PARTITION_PATH) bs=$(ROOTFS_ISO9660_GRUB2_EFI_PARTITION_SIZE) count=1
$(HOST_DIR)/sbin/mkfs.vfat $(ROOTFS_ISO9660_VFAT_OPTS) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
# Copy bootloader and modules to EFI partition
$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/*
$(HOST_DIR)/bin/mcopy -p -m -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) -s \
$(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/* ::/
# Delete the EFI bootloader that is NOT for the platform we're building for
$(HOST_DIR)/bin/mdel -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) \
::$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/$(ROOTFS_ISO9660_EFI_NOTNAME) || true
# Copy efigrub.cfg to EFI partition (may be used to find ISO9660 filesystem)
$(HOST_DIR)/bin/mcopy -n -o -p -m -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH) ::$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/grub.cfg
# Remove efigrub.cfg from ISO9660 filesystem, it was just there for SED-ing
rm -f $(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
endef
define ROOTFS_ISO9660_INSTALL_GRUB2_CONFIG
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_BOOT_MENU) \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH)
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_EFI_BOOT_MENU) \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
$(SED) "s%__EFI_ID_FILE__%$(ROOTFS_ISO9660_GRUB2_EFI_IDENT_FILE)%" \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
endef
endif
################################################################################
# ISOLINUX Bootloader Configuration (BIOS only)
################################################################################
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_ISOLINUX),y)
ROOTFS_ISO9660_DEPENDENCIES += syslinux
ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/isolinux.cfg
ROOTFS_ISO9660_BOOT_IMAGE = isolinux/isolinux.bin
define ROOTFS_ISO9660_INSTALL_ISOLINUX_BIOS
$(INSTALL) -D -m 0644 $(BINARIES_DIR)/syslinux/* \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/ldlinux.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/ldlinux.c32
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/menu.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/menu.c32
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/libutil.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/libutil.c32
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/libcom32.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/libcom32.c32
endef
define ROOTFS_ISO9660_INSTALL_ISOLINUX_CONFIG
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_ISOLINUX_BOOT_MENU) \
$(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH)
endef
endif
################################################################################
# BOTH Mode: ISOLINUX (BIOS) + GRUB2 (EFI)
################################################################################
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BOTH),y)
ROOTFS_ISO9660_DEPENDENCIES += syslinux grub2 host-dosfstools host-mtools
# ISOLINUX configuration
ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/isolinux.cfg
ROOTFS_ISO9660_BOOT_IMAGE = isolinux/isolinux.bin
# GRUB2 EFI configuration
ROOTFS_ISO9660_GRUB2_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/efigrub.cfg
ROOTFS_ISO9660_EFI_PARTITION = boot/efi.img
ROOTFS_ISO9660_EFI_PARTITION_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_EFI_PARTITION)
ROOTFS_ISO9660_EFI_PARTITION_CONTENT = $(BINARIES_DIR)/efi-part
define ROOTFS_ISO9660_INSTALL_ISOLINUX_BIOS
$(INSTALL) -D -m 0644 $(BINARIES_DIR)/syslinux/* \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/ldlinux.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/ldlinux.c32
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/menu.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/menu.c32
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/libutil.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/libutil.c32
$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/libcom32.c32 \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/libcom32.c32
endef
define ROOTFS_ISO9660_INSTALL_ISOLINUX_CONFIG
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_ISOLINUX_BOOT_MENU) \
$(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH)
endef
define ROOTFS_ISO9660_INSTALL_GRUB2_EFI
# Create identification file to better find ISO9660 filesystem
$(INSTALL) -D -m 0644 /dev/null \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_GRUB2_EFI_IDENT_FILE)
# Copy grub.cfg to ISO9660 filesystem where GRUB will find it
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_CONFIG_PATH) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/grub.cfg
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/$(ROOTFS_ISO9660_EFI_NAME) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/$(ROOTFS_ISO9660_EFI_NAME)
# Create EFI FAT partition
rm -rf $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
mkdir -p $(dir $(ROOTFS_ISO9660_EFI_PARTITION_PATH))
dd if=/dev/zero of=$(ROOTFS_ISO9660_EFI_PARTITION_PATH) bs=$(ROOTFS_ISO9660_GRUB2_EFI_PARTITION_SIZE) count=1
$(HOST_DIR)/sbin/mkfs.vfat $(ROOTFS_ISO9660_VFAT_OPTS) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
# Copy bootloader and modules to EFI partition
$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/*
$(HOST_DIR)/bin/mcopy -p -m -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) -s \
$(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/* ::/
# Delete the EFI bootloader that is NOT for the platform we're building for
$(HOST_DIR)/bin/mdel -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) \
::$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/$(ROOTFS_ISO9660_EFI_NOTNAME) || true
# Copy efigrub.cfg to EFI partition (may be used to find ISO9660 filesystem)
$(HOST_DIR)/bin/mcopy -n -o -p -m -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH) ::$(ROOTFS_ISO9660_GRUB2_EFI_PREFIX)/grub.cfg
# Remove efigrub.cfg from ISO9660 filesystem, it was just there for SED-ing
rm -f $(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
endef
define ROOTFS_ISO9660_INSTALL_GRUB2_CONFIG
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_BOOT_MENU) \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH)
$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_GRUB2_EFI_BOOT_MENU) \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
$(SED) "s%__EFI_ID_FILE__%$(ROOTFS_ISO9660_GRUB2_EFI_IDENT_FILE)%" \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH)
endef
endif
################################################################################
# Bootloader Configuration Installation
################################################################################
define ROOTFS_ISO9660_INSTALL_BOOTLOADER_CONFIGS
$(ROOTFS_ISO9660_INSTALL_GRUB2_CONFIG)
$(ROOTFS_ISO9660_INSTALL_ISOLINUX_CONFIG)
endef
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_INSTALL_BOOTLOADER_CONFIGS
################################################################################
# Initrd Handling
################################################################################
define ROOTFS_ISO9660_COPY_KERNEL
$(INSTALL) -D -m 0644 $(LINUX_IMAGE_PATH) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/$(LINUX_IMAGE_NAME)
endef
define ROOTFS_ISO9660_ENABLE_EXTERNAL_INITRD
$(INSTALL) -D -m 0644 $(BINARIES_DIR)/rootfs.cpio$(ROOTFS_CPIO_COMPRESS_EXT) \
$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/initrd
$(if $(ROOTFS_ISO9660_GRUB2_CONFIG_PATH), \
$(SED) "s%__INITRD_PATH__%/boot/initrd%" \
$(ROOTFS_ISO9660_GRUB2_CONFIG_PATH))
$(if $(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH), \
$(SED) "s%__INITRD_PATH__%/boot/initrd%" \
$(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH))
$(if $(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH), \
$(SED) "s%__INITRD_PATH__%/boot/initrd%" \
$(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH))
endef
define ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
$(if $(ROOTFS_ISO9660_GRUB2_CONFIG_PATH), \
$(SED) '/__INITRD_PATH__/d' $(ROOTFS_ISO9660_GRUB2_CONFIG_PATH))
$(if $(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH), \
$(SED) '/__INITRD_PATH__/d' $(ROOTFS_ISO9660_GRUB2_EFI_CONFIG_PATH))
$(if $(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH), \
$(SED) '/append[[:space:]]*initrd=__INITRD_PATH__[[:space:]]*$$/d' $(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH) && \
$(SED) 's/initrd=__INITRD_PATH__[[:space:]]*//' $(ROOTFS_ISO9660_ISOLINUX_CONFIG_PATH))
endef
ifeq ($(ROOTFS_ISO9660_USE_INITRD),YES)
# Copy kernel when using initrd
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_COPY_KERNEL
ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y)
# Initramfs is built into kernel - disable external initrd
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
else
# External initrd - copy it and update configs
ROOTFS_ISO9660_DEPENDENCIES += rootfs-cpio
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_ENABLE_EXTERNAL_INITRD
endif
else # Not using initrd
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION),y)
# Transparent compression requires uncompressed kernel
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_COPY_KERNEL
endif
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
endif
################################################################################
# Bootloader Installation
# This must happen last after all config files are prepared
################################################################################
define ROOTFS_ISO9660_INSTALL_BOOTLOADERS
$(ROOTFS_ISO9660_INSTALL_GRUB2_BIOS)
$(ROOTFS_ISO9660_INSTALL_ISOLINUX_BIOS)
$(ROOTFS_ISO9660_INSTALL_GRUB2_EFI)
endef
ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_INSTALL_BOOTLOADERS
################################################################################
# ISO9660 Generation Options
################################################################################
ROOTFS_ISO9660_OPTS += -r -J -joliet-long -cache-inodes -V 'ISO9660'
ROOTFS_ISO9660_OPTS_BIOS = \
-b $(ROOTFS_ISO9660_BOOT_IMAGE) \
-no-emul-boot \
-boot-load-size 4 \
-boot-info-table
ROOTFS_ISO9660_OPTS_EFI = \
--efi-boot $(ROOTFS_ISO9660_EFI_PARTITION) \
-no-emul-boot
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_ISOLINUX),y)
ROOTFS_ISO9660_OPTS += -c isolinux/boot.cat
else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BOTH),y)
ROOTFS_ISO9660_OPTS += -c isolinux/boot.cat
endif
# Determine which boot options to use
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER)$(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),yy)
# Both BIOS and EFI
ROOTFS_ISO9660_OPTS += \
$(ROOTFS_ISO9660_OPTS_BIOS) \
-eltorito-alt-boot \
$(ROOTFS_ISO9660_OPTS_EFI)
else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER),y)
# BIOS only
ROOTFS_ISO9660_OPTS += $(ROOTFS_ISO9660_OPTS_BIOS)
else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),y)
# EFI only
ROOTFS_ISO9660_OPTS += $(ROOTFS_ISO9660_OPTS_EFI)
endif
################################################################################
# Hybrid Image Support (USB bootable)
################################################################################
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_HYBRID),y)
ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BOTH),y)
ROOTFS_ISO9660_OPTS += \
-isohybrid-mbr $(HOST_DIR)/share/syslinux/isohdpfx.bin \
-isohybrid-gpt-basdat -isohybrid-apm-hfsplus
else
define ROOTFS_ISO9660_GEN_HYBRID
$(HOST_DIR)/bin/isohybrid -t 0x96 $@
endef
ROOTFS_ISO9660_POST_GEN_HOOKS += ROOTFS_ISO9660_GEN_HYBRID
endif
endif
################################################################################
# ISO9660 Image Generation
################################################################################
define ROOTFS_ISO9660_CMD
$(HOST_DIR)/bin/xorriso -as mkisofs \
$(ROOTFS_ISO9660_OPTS) \
-o $@ $(ROOTFS_ISO9660_TMP_TARGET_DIR)
endef
################################################################################
# Register filesystem
################################################################################
$(eval $(rootfs))
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