common.mk 5.8 KB

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  1. #
  2. # Macro that builds the needed Makefile target to create a root
  3. # filesystem image.
  4. #
  5. # The following variable must be defined before calling this macro
  6. #
  7. # ROOTFS_$(FSTYPE)_CMD, the command that generates the root
  8. # filesystem image. A single command is allowed. The filename of the
  9. # filesystem image that it must generate is $$@.
  10. #
  11. # The following variables can optionaly be defined
  12. #
  13. # ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
  14. # build the root filesystem (usually host tools)
  15. #
  16. # ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
  17. # generating the filesystem image
  18. #
  19. # ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
  20. # generating the filesystem image
  21. #
  22. # In terms of configuration option, this macro assumes that the
  23. # BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
  24. # the generation of a filesystem image of a particular type. If
  25. # the configuration options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
  26. # BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
  27. # BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
  28. # macro will automatically generate a compressed filesystem image.
  29. FS_DIR = $(BUILD_DIR)/buildroot-fs
  30. FULL_DEVICE_TABLE = $(FS_DIR)/device_table.txt
  31. ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE) \
  32. $(BR2_ROOTFS_STATIC_DEVICE_TABLE))
  33. USERS_TABLE = $(FS_DIR)/users_table.txt
  34. ROOTFS_USERS_TABLES = $(call qstrip,$(BR2_ROOTFS_USERS_TABLES))
  35. ifeq ($(BR2_REPRODUCIBLE),y)
  36. define ROOTFS_REPRODUCIBLE
  37. find $(TARGET_DIR) -print0 | xargs -0 -r touch -hd @$(SOURCE_DATE_EPOCH)
  38. endef
  39. endif
  40. ROOTFS_COMMON_DEPENDENCIES = \
  41. host-fakeroot host-makedevs \
  42. $(BR2_TAR_HOST_DEPENDENCY) \
  43. $(if $(PACKAGES_USERS)$(ROOTFS_USERS_TABLES),host-mkpasswd)
  44. .PHONY: rootfs-common
  45. rootfs-common: $(ROOTFS_COMMON_DEPENDENCIES) target-finalize
  46. @$(call MESSAGE,"Generating root filesystems common tables")
  47. rm -rf $(FS_DIR)
  48. mkdir -p $(FS_DIR)
  49. $(call PRINTF,$(PACKAGES_USERS)) >> $(USERS_TABLE)
  50. ifneq ($(ROOTFS_USERS_TABLES),)
  51. cat $(ROOTFS_USERS_TABLES) >> $(USERS_TABLE)
  52. endif
  53. ifneq ($(ROOTFS_DEVICE_TABLES),)
  54. cat $(ROOTFS_DEVICE_TABLES) > $(FULL_DEVICE_TABLE)
  55. ifeq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
  56. $(call PRINTF,$(PACKAGES_DEVICES_TABLE)) >> $(FULL_DEVICE_TABLE)
  57. endif
  58. endif
  59. $(call PRINTF,$(PACKAGES_PERMISSIONS_TABLE)) >> $(FULL_DEVICE_TABLE)
  60. rootfs-common-show-depends:
  61. @echo $(ROOTFS_COMMON_DEPENDENCIES)
  62. # Since this function will be called from within an $(eval ...)
  63. # all variable references except the arguments must be $$-quoted.
  64. define inner-rootfs
  65. ROOTFS_$(2)_DIR = $$(FS_DIR)/$(1)
  66. ROOTFS_$(2)_TARGET_DIR = $$(ROOTFS_$(2)_DIR)/target
  67. ROOTFS_$(2)_DEPENDENCIES += rootfs-common
  68. ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
  69. ROOTFS_$(2)_COMPRESS_EXT = .gz
  70. ROOTFS_$(2)_COMPRESS_CMD = gzip -9 -c
  71. endif
  72. ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
  73. ROOTFS_$(2)_COMPRESS_EXT = .bz2
  74. ROOTFS_$(2)_COMPRESS_CMD = bzip2 -9 -c
  75. endif
  76. ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
  77. ROOTFS_$(2)_DEPENDENCIES += host-lzma
  78. ROOTFS_$(2)_COMPRESS_EXT = .lzma
  79. ROOTFS_$(2)_COMPRESS_CMD = $$(LZMA) -9 -c
  80. endif
  81. ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZ4),y)
  82. ROOTFS_$(2)_DEPENDENCIES += host-lz4
  83. ROOTFS_$(2)_COMPRESS_EXT = .lz4
  84. ROOTFS_$(2)_COMPRESS_CMD = lz4 -l -9 -c
  85. endif
  86. ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZO),y)
  87. ROOTFS_$(2)_DEPENDENCIES += host-lzop
  88. ROOTFS_$(2)_COMPRESS_EXT = .lzo
  89. ROOTFS_$(2)_COMPRESS_CMD = $$(LZOP) -9 -c
  90. endif
  91. ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y)
  92. ROOTFS_$(2)_DEPENDENCIES += host-xz
  93. ROOTFS_$(2)_COMPRESS_EXT = .xz
  94. ROOTFS_$(2)_COMPRESS_CMD = xz -9 -C crc32 -c
  95. endif
  96. $$(BINARIES_DIR)/rootfs.$(1): ROOTFS=$(2)
  97. $$(BINARIES_DIR)/rootfs.$(1): FAKEROOT_SCRIPT=$$(ROOTFS_$(2)_DIR)/fakeroot
  98. $$(BINARIES_DIR)/rootfs.$(1): $$(ROOTFS_$(2)_DEPENDENCIES)
  99. @$$(call MESSAGE,"Generating root filesystem image rootfs.$(1)")
  100. rm -rf $$(ROOTFS_$(2)_DIR)
  101. mkdir -p $$(ROOTFS_$(2)_DIR)
  102. rsync -auH \
  103. --exclude=/$$(notdir $$(TARGET_DIR_WARNING_FILE)) \
  104. $$(BASE_TARGET_DIR)/ \
  105. $$(TARGET_DIR)
  106. echo '#!/bin/sh' > $$(FAKEROOT_SCRIPT)
  107. echo "set -e" >> $$(FAKEROOT_SCRIPT)
  108. echo "chown -h -R 0:0 $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
  109. PATH=$$(BR_PATH) $$(TOPDIR)/support/scripts/mkusers $$(USERS_TABLE) $$(TARGET_DIR) >> $$(FAKEROOT_SCRIPT)
  110. echo "$$(HOST_DIR)/bin/makedevs -d $$(FULL_DEVICE_TABLE) $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
  111. $$(foreach s,$$(call qstrip,$$(BR2_ROOTFS_POST_FAKEROOT_SCRIPT)),\
  112. echo "echo '$$(TERM_BOLD)>>> Executing fakeroot script $$(s)$$(TERM_RESET)'" >> $$(FAKEROOT_SCRIPT); \
  113. echo $$(EXTRA_ENV) $$(s) $$(TARGET_DIR) $$(BR2_ROOTFS_POST_SCRIPT_ARGS) >> $$(FAKEROOT_SCRIPT)$$(sep))
  114. $$(foreach hook,$$(ROOTFS_PRE_CMD_HOOKS),\
  115. $$(call PRINTF,$$($$(hook))) >> $$(FAKEROOT_SCRIPT)$$(sep))
  116. $$(foreach hook,$$(ROOTFS_$(2)_PRE_GEN_HOOKS),\
  117. $$(call PRINTF,$$($$(hook))) >> $$(FAKEROOT_SCRIPT)$$(sep))
  118. $$(call PRINTF,$$(ROOTFS_REPRODUCIBLE)) >> $$(FAKEROOT_SCRIPT)
  119. $$(call PRINTF,$$(ROOTFS_$(2)_CMD)) >> $$(FAKEROOT_SCRIPT)
  120. chmod a+x $$(FAKEROOT_SCRIPT)
  121. PATH=$$(BR_PATH) $$(HOST_DIR)/bin/fakeroot -- $$(FAKEROOT_SCRIPT)
  122. $(Q)rm -rf $$(TARGET_DIR)
  123. ifneq ($$(ROOTFS_$(2)_COMPRESS_CMD),)
  124. PATH=$$(BR_PATH) $$(ROOTFS_$(2)_COMPRESS_CMD) $$@ > $$@$$(ROOTFS_$(2)_COMPRESS_EXT)
  125. endif
  126. $$(foreach hook,$$(ROOTFS_$(2)_POST_GEN_HOOKS),$$(call $$(hook))$$(sep))
  127. rootfs-$(1)-show-depends:
  128. @echo $$(ROOTFS_$(2)_DEPENDENCIES)
  129. rootfs-$(1): $$(BINARIES_DIR)/rootfs.$(1)
  130. .PHONY: rootfs-$(1) rootfs-$(1)-show-depends
  131. ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
  132. TARGETS_ROOTFS += rootfs-$(1)
  133. PACKAGES += $$(filter-out rootfs-%,$$(ROOTFS_$(2)_DEPENDENCIES) $$(ROOTFS_COMMON_DEPENDENCIES))
  134. endif
  135. # Check for legacy POST_TARGETS rules
  136. ifneq ($$(ROOTFS_$(2)_POST_TARGETS),)
  137. $$(error Filesystem $(1) uses post-target rules, which are no longer supported.\
  138. Update $(1) to use post-gen hooks instead)
  139. endif
  140. endef
  141. # $(pkgname) also works well to return the filesystem name
  142. rootfs = $(call inner-rootfs,$(pkgname),$(call UPPERCASE,$(pkgname)))
  143. include $(sort $(wildcard fs/*/*.mk))