################################################################################
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#
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# linux-headers
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#
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################################################################################
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# This package is used to provide Linux kernel headers for the
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# internal toolchain backend.
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ifeq ($(BR2_PACKAGE_LINUX_HEADERS_AUTO_VERSION),y)
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# Get real Linux headers version from Makefile's VERSION and PATCHLEVEL
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LINUX_HEADERS_VERSION_REAL = \
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`grep -o "[0-9]*" -m 2 $(LINUX_HEADERS_DIR)/Makefile|paste -sd.`
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endif
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# Set variables depending on whether we are using headers from a kernel
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# build or a standalone header package.
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ifeq ($(BR2_KERNEL_HEADERS_AS_KERNEL),y)
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LINUX_HEADERS_CUSTOM_TARBALL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL))
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LINUX_HEADERS_CUSTOM_LOCAL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_LOCAL))
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LINUX_HEADERS_CUSTOM_GIT = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_GIT))
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LINUX_HEADERS_CUSTOM_HG = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_HG))
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LINUX_HEADERS_CUSTOM_SVN = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_SVN))
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LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_LINUX_KERNEL_VERSION))
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LINUX_HEADERS_CUSTOM_TARBALL_LOCATION = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))
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LINUX_HEADERS_CUSTOM_LOCAL_LOCATION = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_LOCAL_LOCATION))
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LINUX_HEADERS_REPO_URL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
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LINUX_HEADERS_CIP = $(BR2_LINUX_KERNEL_LATEST_CIP_VERSION)$(BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION)
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ifneq ($(LINUX_HEADERS_OVERRIDE_SRCDIR),)
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$(error LINUX_HEADERS_OVERRIDE_SRCDIR must not be set when BR2_KERNEL_HEADERS_AS_KERNEL=y)
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endif
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LINUX_HEADERS_OVERRIDE_SRCDIR = $(LINUX_OVERRIDE_SRCDIR)
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else # ! BR2_KERNEL_HEADERS_AS_KERNEL
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LINUX_HEADERS_CUSTOM_TARBALL = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL))
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LINUX_HEADERS_CUSTOM_LOCAL = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_LOCAL))
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LINUX_HEADERS_CUSTOM_GIT = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_GIT))
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LINUX_HEADERS_CUSTOM_HG =
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LINUX_HEADERS_CUSTOM_SVN =
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LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_DEFAULT_KERNEL_HEADERS))
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LINUX_HEADERS_CUSTOM_TARBALL_LOCATION = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL_LOCATION))
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LINUX_HEADERS_CUSTOM_LOCAL_LOCATION = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_LOCAL_LOCATION))
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LINUX_HEADERS_REPO_URL = $(call qstrip,$(BR2_KERNEL_HEADERS_CUSTOM_REPO_URL))
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LINUX_HEADERS_CIP =
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endif # BR2_KERNEL_HEADERS_AS_KERNEL
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# Compute LINUX_HEADERS_SOURCE and LINUX_HEADERS_SITE from the configuration
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ifeq ($(LINUX_HEADERS_CUSTOM_TARBALL),y)
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LINUX_HEADERS_SOURCE = $(notdir $(LINUX_HEADERS_CUSTOM_TARBALL_LOCATION))
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LINUX_HEADERS_SITE = $(patsubst %/,%,$(dir $(LINUX_HEADERS_CUSTOM_TARBALL_LOCATION)))
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else ifeq ($(LINUX_HEADERS_CUSTOM_LOCAL),y)
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LINUX_HEADERS_SITE = $(LINUX_HEADERS_CUSTOM_LOCAL_LOCATION)
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LINUX_HEADERS_SITE_METHOD = local
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else ifeq ($(LINUX_HEADERS_CUSTOM_GIT),y)
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LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION)$(BR_FMT_VERSION_git).tar.gz
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LINUX_HEADERS_SITE = $(LINUX_HEADERS_REPO_URL)
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LINUX_HEADERS_SITE_METHOD = git
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else ifeq ($(LINUX_HEADERS_CUSTOM_HG),y)
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LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
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LINUX_HEADERS_SITE = $(LINUX_HEADERS_REPO_URL)
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LINUX_HEADERS_SITE_METHOD = hg
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else ifeq ($(LINUX_HEADERS_CUSTOM_SVN),y)
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LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION)$(BR_FMT_VERSION_svn).tar.gz
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LINUX_HEADERS_SITE = $(LINUX_HEADERS_REPO_URL)
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LINUX_HEADERS_SITE_METHOD = svn
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else ifeq ($(LINUX_HEADERS_CIP),y)
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LINUX_HEADERS_SOURCE = linux-cip-$(LINUX_HEADERS_VERSION).tar.gz
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LINUX_HEADERS_SITE = https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip.git/snapshot
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else ifneq ($(findstring -rc,$(LINUX_HEADERS_VERSION)),)
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# Since 4.12-rc1, -rc kernels are generated from cgit. This also works for
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# older -rc kernels.
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LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.gz
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LINUX_HEADERS_SITE = https://git.kernel.org/torvalds/t
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else
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LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.xz
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ifeq ($(findstring x2.6.,x$(LINUX_HEADERS_VERSION)),x2.6.)
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LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6
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else
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LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v$(firstword $(subst ., ,$(LINUX_HEADERS_VERSION))).x
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endif # x2.6
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endif # LINUX_HEADERS_CUSTOM_TARBALL
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# Apply any necessary patches if we are using the headers from a kernel
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# build.
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ifeq ($(BR2_KERNEL_HEADERS_AS_KERNEL),y)
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LINUX_HEADERS_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH)) \
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$(wildcard $(addsuffix /linux,$(call qstrip,$(BR2_GLOBAL_PATCH_DIR))))
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# We rely on the generic package infrastructure to download and apply
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# remote patches (downloaded from ftp, http or https). For local
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# patches, we can't rely on that infrastructure, because there might
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# be directories in the patch list (unlike for other packages).
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LINUX_HEADERS_PATCH = $(filter ftp://% http://% https://%,$(LINUX_HEADERS_PATCHES))
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define LINUX_HEADERS_APPLY_LOCAL_PATCHES
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for p in $(filter-out ftp://% http://% https://%,$(LINUX_HEADERS_PATCHES)) ; do \
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if test -d $$p ; then \
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$(APPLY_PATCHES) $(@D) $$p \*.patch || exit 1 ; \
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else \
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$(APPLY_PATCHES) $(@D) `dirname $$p` `basename $$p` || exit 1; \
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fi \
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done
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endef
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LINUX_HEADERS_POST_PATCH_HOOKS += LINUX_HEADERS_APPLY_LOCAL_PATCHES
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endif # BR2_KERNEL_HEADERS_AS_KERNEL
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# Skip hash checking for custom kernel headers.
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ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL)$(BR2_KERNEL_HEADERS_CUSTOM_GIT)$(BR2_KERNEL_HEADERS_CUSTOM_LOCAL),y)
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BR_NO_CHECK_HASH_FOR += $(LINUX_HEADERS_SOURCE)
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endif
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# linux-headers really is the same as the linux package
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LINUX_HEADERS_DL_SUBDIR = linux
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LINUX_HEADERS_LICENSE = GPL-2.0
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ifeq ($(BR2_KERNEL_HEADERS_LATEST),y)
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LINUX_HEADERS_LICENSE_FILES = \
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COPYING \
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LICENSES/preferred/GPL-2.0 \
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LICENSES/exceptions/Linux-syscall-note
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endif
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LINUX_HEADERS_CPE_ID_VENDOR = linux
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LINUX_HEADERS_CPE_ID_PRODUCT = linux_kernel
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LINUX_HEADERS_INSTALL_STAGING = YES
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# linux-headers is part of the toolchain so disable the toolchain dependency
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LINUX_HEADERS_ADD_TOOLCHAIN_DEPENDENCY = NO
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# For some architectures (eg. Arc, Cris, Hexagon, ia64, parisc,
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# score and xtensa), the Linux buildsystem tries to call the
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# cross-compiler, although it is not needed at all.
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# This results in seemingly errors like:
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# [...]/scripts/gcc-version.sh: line 26: arc-linux-uclibc-gcc: command not found
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# Those can be safely ignored.
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# This step is required to have a separate linux headers location for
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# uClibc building. This way uClibc doesn't modify linux headers on installation
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# of "its" headers
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define LINUX_HEADERS_CONFIGURE_CMDS
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(cd $(@D); \
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$(TARGET_MAKE_ENV) $(MAKE) \
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ARCH=$(KERNEL_ARCH) \
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HOSTCC="$(HOSTCC)" \
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HOSTCFLAGS="$(HOSTCFLAGS)" \
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HOSTCXX="$(HOSTCXX)" \
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INSTALL_HDR_PATH=$(@D)/usr \
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headers_install)
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endef
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define LINUX_HEADERS_INSTALL_STAGING_CMDS
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(cd $(@D); \
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$(TARGET_MAKE_ENV) $(MAKE) \
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ARCH=$(KERNEL_ARCH) \
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HOSTCC="$(HOSTCC)" \
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HOSTCFLAGS="$(HOSTCFLAGS)" \
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HOSTCXX="$(HOSTCXX)" \
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INSTALL_HDR_PATH=$(STAGING_DIR)/usr \
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headers_install)
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endef
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ifneq ($(BR2_PACKAGE_LINUX_HEADERS_AUTO_VERSION),y)
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ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_AS_KERNEL)$(BR2_KERNEL_HEADERS_CUSTOM_TARBALL)$(BR2_KERNEL_HEADERS_CUSTOM_GIT)$(BR2_KERNEL_HEADERS_CUSTOM_LOCAL),y)
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# In this case, we must always do a 'loose' test, because they are all
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# custom versions which may be later than what we know right now.
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define LINUX_HEADERS_CHECK_VERSION
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$(call check_kernel_headers_version,\
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$(BUILD_DIR),\
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$(STAGING_DIR),\
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$(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)),\
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loose)
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endef
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LINUX_HEADERS_POST_INSTALL_STAGING_HOOKS += LINUX_HEADERS_CHECK_VERSION
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endif
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endif
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$(eval $(generic-package))
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