linux-headers.mk 5.8 KB

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  1. ################################################################################
  2. #
  3. # linux-headers
  4. #
  5. ################################################################################
  6. # This package is used to provide Linux kernel headers for the
  7. # internal toolchain backend.
  8. # Set variables depending on whether we are using headers from a kernel
  9. # build or a standalone header package.
  10. ifeq ($(BR2_KERNEL_HEADERS_AS_KERNEL),y)
  11. LINUX_HEADERS_CUSTOM_TARBALL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL))
  12. LINUX_HEADERS_CUSTOM_GIT = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_GIT))
  13. LINUX_HEADERS_CUSTOM_HG = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_HG))
  14. LINUX_HEADERS_CUSTOM_SVN = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_SVN))
  15. LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_LINUX_KERNEL_VERSION))
  16. LINUX_HEADERS_CUSTOM_TARBALL_LOCATION = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))
  17. LINUX_HEADERS_REPO_URL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
  18. else # ! BR2_KERNEL_HEADERS_AS_KERNEL
  19. LINUX_HEADERS_CUSTOM_TARBALL = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL))
  20. LINUX_HEADERS_CUSTOM_GIT = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_GIT))
  21. LINUX_HEADERS_CUSTOM_HG =
  22. LINUX_HEADERS_CUSTOM_SVN =
  23. LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_DEFAULT_KERNEL_HEADERS))
  24. LINUX_HEADERS_CUSTOM_TARBALL_LOCATION = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL_LOCATION))
  25. LINUX_HEADERS_REPO_URL = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_REPO_URL))
  26. endif # BR2_KERNEL_HEADERS_AS_KERNEL
  27. # Compute LINUX_HEADERS_SOURCE and LINUX_HEADERS_SITE from the configuration
  28. ifeq ($(LINUX_HEADERS_CUSTOM_TARBALL),y)
  29. LINUX_HEADERS_SOURCE = $(notdir $(LINUX_HEADERS_CUSTOM_TARBALL_LOCATION))
  30. LINUX_HEADERS_SITE = $(patsubst %/,%,$(dir $(LINUX_HEADERS_CUSTOM_TARBALL_LOCATION)))
  31. else ifeq ($(LINUX_HEADERS_CUSTOM_GIT),y)
  32. LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
  33. LINUX_HEADERS_SITE = $(LINUX_HEADERS_REPO_URL)
  34. LINUX_HEADERS_SITE_METHOD = git
  35. else ifeq ($(LINUX_HEADERS_CUSTOM_HG),y)
  36. LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
  37. LINUX_HEADERS_SITE = $(LINUX_HEADERS_REPO_URL)
  38. LINUX_HEADERS_SITE_METHOD = hg
  39. else ifeq ($(LINUX_HEADERS_CUSTOM_SVN),y)
  40. LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
  41. LINUX_HEADERS_SITE = $(LINUX_HEADERS_REPO_URL)
  42. LINUX_HEADERS_SITE_METHOD = svn
  43. else ifneq ($(findstring -rc,$(LINUX_HEADERS_VERSION)),)
  44. # Since 4.12-rc1, -rc kernels are generated from cgit. This also works for
  45. # older -rc kernels.
  46. LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
  47. LINUX_HEADERS_SITE = https://git.kernel.org/torvalds/t
  48. else
  49. LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.xz
  50. ifeq ($(findstring x2.6.,x$(LINUX_HEADERS_VERSION)),x2.6.)
  51. LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6
  52. else
  53. LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v$(firstword $(subst ., ,$(LINUX_HEADERS_VERSION))).x
  54. endif # x2.6
  55. endif # LINUX_HEADERS_CUSTOM_TARBALL
  56. # Apply any necessary patches if we are using the headers from a kernel
  57. # build.
  58. ifeq ($(BR2_KERNEL_HEADERS_AS_KERNEL),y)
  59. LINUX_HEADERS_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH)) \
  60. $(wildcard $(addsuffix /linux,$(call qstrip,$(BR2_GLOBAL_PATCH_DIR))))
  61. # We rely on the generic package infrastructure to download and apply
  62. # remote patches (downloaded from ftp, http or https). For local
  63. # patches, we can't rely on that infrastructure, because there might
  64. # be directories in the patch list (unlike for other packages).
  65. LINUX_HEADERS_PATCH = $(filter ftp://% http://% https://%,$(LINUX_HEADERS_PATCHES))
  66. define LINUX_HEADERS_APPLY_LOCAL_PATCHES
  67. for p in $(filter-out ftp://% http://% https://%,$(LINUX_HEADERS_PATCHES)) ; do \
  68. if test -d $$p ; then \
  69. $(APPLY_PATCHES) $(@D) $$p \*.patch || exit 1 ; \
  70. else \
  71. $(APPLY_PATCHES) $(@D) `dirname $$p` `basename $$p` || exit 1; \
  72. fi \
  73. done
  74. endef
  75. LINUX_HEADERS_POST_PATCH_HOOKS += LINUX_HEADERS_APPLY_LOCAL_PATCHES
  76. endif # BR2_KERNEL_HEADERS_AS_KERNEL
  77. # Skip hash checking for custom kernel headers.
  78. ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL)$(BR2_KERNEL_HEADERS_CUSTOM_GIT),y)
  79. BR_NO_CHECK_HASH_FOR += $(LINUX_HEADERS_SOURCE)
  80. endif
  81. # linux-headers really is the same as the linux package
  82. LINUX_HEADERS_DL_SUBDIR = linux
  83. LINUX_HEADERS_LICENSE = GPL-2.0
  84. LINUX_HEADERS_LICENSE_FILES = COPYING
  85. LINUX_HEADERS_INSTALL_STAGING = YES
  86. # linux-headers is part of the toolchain so disable the toolchain dependency
  87. LINUX_HEADERS_ADD_TOOLCHAIN_DEPENDENCY = NO
  88. # For some architectures (eg. Arc, Cris, Hexagon, ia64, parisc,
  89. # score and xtensa), the Linux buildsystem tries to call the
  90. # cross-compiler, although it is not needed at all.
  91. # This results in seemingly errors like:
  92. # [...]/scripts/gcc-version.sh: line 26: arc-linux-uclibc-gcc: command not found
  93. # Those can be safely ignored.
  94. # This step is required to have a separate linux headers location for
  95. # uClibc building. This way uClibc doesn't modify linux headers on installation
  96. # of "its" headers
  97. define LINUX_HEADERS_CONFIGURE_CMDS
  98. (cd $(@D); \
  99. $(TARGET_MAKE_ENV) $(MAKE) \
  100. ARCH=$(KERNEL_ARCH) \
  101. HOSTCC="$(HOSTCC)" \
  102. HOSTCFLAGS="$(HOSTCFLAGS)" \
  103. HOSTCXX="$(HOSTCXX)" \
  104. INSTALL_HDR_PATH=$(@D)/usr \
  105. headers_install)
  106. endef
  107. define LINUX_HEADERS_INSTALL_STAGING_CMDS
  108. (cd $(@D); \
  109. $(TARGET_MAKE_ENV) $(MAKE) \
  110. ARCH=$(KERNEL_ARCH) \
  111. HOSTCC="$(HOSTCC)" \
  112. HOSTCFLAGS="$(HOSTCFLAGS)" \
  113. HOSTCXX="$(HOSTCXX)" \
  114. INSTALL_HDR_PATH=$(STAGING_DIR)/usr \
  115. headers_install)
  116. endef
  117. ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_AS_KERNEL)$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL)$(BR2_KERNEL_HEADERS_CUSTOM_GIT),y)
  118. define LINUX_HEADERS_CHECK_VERSION
  119. $(call check_kernel_headers_version,\
  120. $(BUILD_DIR),\
  121. $(STAGING_DIR),\
  122. $(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)))
  123. endef
  124. LINUX_HEADERS_POST_INSTALL_STAGING_HOOKS += LINUX_HEADERS_CHECK_VERSION
  125. endif
  126. $(eval $(generic-package))