package/linux-headers/linux-headers.mk

   1 ################################################################################
   2 #
   3 # linux-headers
   4 #
   5 ################################################################################
   6
   7 # This package is used to provide Linux kernel headers for the
   8 # internal toolchain backend.
   9
  10 ifeq ($(BR2_KERNEL_HEADERS_AS_KERNEL),y)
  11
  12 LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_LINUX_KERNEL_VERSION))
  13
  14 # Compute LINUX_HEADERS_SOURCE and LINUX_HEADERS_SITE from the configuration
  15 ifeq ($(BR2_LINUX_KERNEL_CUSTOM_TARBALL),y)
  16 LINUX_HEADERS_TARBALL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))
  17 LINUX_HEADERS_SITE = $(patsubst %/,%,$(dir $(LINUX_HEADERS_TARBALL)))
  18 LINUX_HEADERS_SOURCE = $(notdir $(LINUX_HEADERS_TARBALL))
  19 BR_NO_CHECK_HASH_FOR += $(LINUX_HEADERS_SOURCE)
  20 else ifeq ($(BR2_LINUX_KERNEL_CUSTOM_GIT),y)
  21 LINUX_HEADERS_SITE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
  22 LINUX_HEADERS_SITE_METHOD = git
  23 # use same git tarball as linux kernel
  24 LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
  25 else ifeq ($(BR2_LINUX_KERNEL_CUSTOM_HG),y)
  26 LINUX_HEADERS_SITE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
  27 LINUX_HEADERS_SITE_METHOD = hg
  28 # use same hg tarball as linux kernel
  29 LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
  30 else
  31 LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.xz
  32 ifeq ($(BR2_LINUX_KERNEL_CUSTOM_VERSION),y)
  33 BR_NO_CHECK_HASH_FOR += $(LINUX_HEADERS_SOURCE)
  34 endif
  35 # In X.Y.Z, get X and Y. We replace dots and dashes by spaces in order
  36 # to use the $(word) function. We support versions such as 4.0, 3.1,
  37 # 2.6.32, 2.6.32-rc1, 3.0-rc6, etc.
  38 ifeq ($(findstring x2.6.,x$(LINUX_HEADERS_VERSION)),x2.6.)
  39 LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6
  40 else ifeq ($(findstring x3.,x$(LINUX_HEADERS_VERSION)),x3.)
  41 LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v3.x
  42 else ifeq ($(findstring x4.,x$(LINUX_HEADERS_VERSION)),x4.)
  43 LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v4.x
  44 endif
  45 # release candidates are in testing/ subdir
  46 ifneq ($(findstring -rc,$(LINUX_HEADERS_VERSION)),)
  47 LINUX_HEADERS_SITE := $(LINUX_HEADERS_SITE)/testing
  48 endif # -rc
  49 endif
  50
  51 LINUX_HEADERS_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH))
  52
  53 # We rely on the generic package infrastructure to download and apply
  54 # remote patches (downloaded from ftp, http or https). For local
  55 # patches, we can't rely on that infrastructure, because there might
  56 # be directories in the patch list (unlike for other packages).
  57 LINUX_HEADERS_PATCH = $(filter ftp://% http://% https://%,$(LINUX_HEADERS_PATCHES))
  58
  59 define LINUX_HEADERS_APPLY_LOCAL_PATCHES
  60         for p in $(filter-out ftp://% http://% https://%,$(LINUX_HEADERS_PATCHES)) ; do \
  61                 if test -d $$p ; then \
  62                         $(APPLY_PATCHES) $(@D) $$p \*.patch || exit 1 ; \
  63                 else \
  64                         $(APPLY_PATCHES) $(@D) `dirname $$p` `basename $$p` || exit 1; \
  65                 fi \
  66         done
  67 endef
  68
  69 LINUX_HEADERS_POST_PATCH_HOOKS += LINUX_HEADERS_APPLY_LOCAL_PATCHES
  70
  71 else # ! BR2_KERNEL_HEADERS_AS_KERNEL
  72
  73 LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_DEFAULT_KERNEL_HEADERS))
  74 ifeq ($(findstring x2.6.,x$(LINUX_HEADERS_VERSION)),x2.6.)
  75 LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6
  76 else ifeq ($(findstring x3.,x$(LINUX_HEADERS_VERSION)),x3.)
  77 LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v3.x
  78 else ifeq ($(findstring x4.,x$(LINUX_HEADERS_VERSION)),x4.)
  79 LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v4.x
  80 endif
  81 LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.xz
  82
  83 endif # ! BR2_KERNEL_HEADERS_AS_KERNEL
  84
  85 LINUX_HEADERS_LICENSE = GPLv2
  86 LINUX_HEADERS_LICENSE_FILES = COPYING
  87
  88 LINUX_HEADERS_INSTALL_STAGING = YES
  89
  90 # linux-headers is part of the toolchain so disable the toolchain dependency
  91 LINUX_HEADERS_ADD_TOOLCHAIN_DEPENDENCY = NO
  92
  93 # For some architectures (eg. Arc, Cris, Hexagon, ia64, parisc,
  94 # score and xtensa), the Linux buildsystem tries to call the
  95 # cross-compiler, although it is not needed at all.
  96 # This results in seemingly errors like:
  97 #   [...]/scripts/gcc-version.sh: line 26: arc-linux-uclibc-gcc: command not found
  98 # Those can be safely ignored.
  99
 100 # This step is required to have a separate linux headers location for
 101 # uClibc building. This way uClibc doesn't modify linux headers on installation
 102 # of "its" headers
 103 define LINUX_HEADERS_CONFIGURE_CMDS
 104         (cd $(@D); \
 105                 $(TARGET_MAKE_ENV) $(MAKE) \
 106                         ARCH=$(KERNEL_ARCH) \
 107                         HOSTCC="$(HOSTCC)" \
 108                         HOSTCFLAGS="$(HOSTCFLAGS)" \
 109                         HOSTCXX="$(HOSTCXX)" \
 110                         INSTALL_HDR_PATH=$(@D)/usr \
 111                         headers_install)
 112 endef
 113
 114 define LINUX_HEADERS_INSTALL_STAGING_CMDS
 115         (cd $(@D); \
 116                 $(TARGET_MAKE_ENV) $(MAKE) \
 117                         ARCH=$(KERNEL_ARCH) \
 118                         HOSTCC="$(HOSTCC)" \
 119                         HOSTCFLAGS="$(HOSTCFLAGS)" \
 120                         HOSTCXX="$(HOSTCXX)" \
 121                         INSTALL_HDR_PATH=$(STAGING_DIR)/usr \
 122                         headers_install)
 123 endef
 124
 125 ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_AS_KERNEL),y)
 126 define LINUX_HEADERS_CHECK_VERSION
 127         $(call check_kernel_headers_version,\
 128                 $(STAGING_DIR),\
 129                 $(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)))
 130 endef
 131 LINUX_HEADERS_POST_INSTALL_STAGING_HOOKS += LINUX_HEADERS_CHECK_VERSION
 132 endif
 133
 134 $(eval $(generic-package))