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################################################################################
#
# linux-headers
#
################################################################################
# This package is used to provide Linux kernel headers for the
# internal toolchain backend.
LINUX_HEADERS_VERSION = $(call qstrip,$(BR2_DEFAULT_KERNEL_HEADERS))
ifeq ($(findstring x2.6.,x$(LINUX_HEADERS_VERSION)),x2.6.)
LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6
else ifeq ($(findstring x3.,x$(LINUX_HEADERS_VERSION)),x3.)
LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v3.x
else ifeq ($(findstring x4.,x$(LINUX_HEADERS_VERSION)),x4.)
LINUX_HEADERS_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v4.x
endif
LINUX_HEADERS_SOURCE = linux-$(LINUX_HEADERS_VERSION).tar.xz
LINUX_HEADERS_INSTALL_STAGING = YES
# linux-headers is part of the toolchain so disable the toolchain dependency
LINUX_HEADERS_ADD_TOOLCHAIN_DEPENDENCY = NO
# For some architectures (eg. Arc, Cris, Hexagon, ia64, parisc,
# score and xtensa), the Linux buildsystem tries to call the
# cross-compiler, although it is not needed at all.
# This results in seemingly errors like:
# [...]/scripts/gcc-version.sh: line 26: arc-linux-uclibc-gcc: command not found
# Those can be safely ignored.
# This step is required to have a separate linux headers location for
# uClibc building. This way uClibc doesn't modify linux headers on installation
# of "its" headers
define LINUX_HEADERS_CONFIGURE_CMDS
(cd $(@D); \
$(TARGET_MAKE_ENV) $(MAKE) \
ARCH=$(KERNEL_ARCH) \
HOSTCC="$(HOSTCC)" \
HOSTCFLAGS="$(HOSTCFLAGS)" \
HOSTCXX="$(HOSTCXX)" \
headers_install)
endef
define LINUX_HEADERS_INSTALL_STAGING_CMDS
(cd $(@D); \
$(TARGET_MAKE_ENV) $(MAKE) \
ARCH=$(KERNEL_ARCH) \
HOSTCC="$(HOSTCC)" \
HOSTCFLAGS="$(HOSTCFLAGS)" \
HOSTCXX="$(HOSTCXX)" \
INSTALL_HDR_PATH=$(STAGING_DIR)/usr \
headers_install)
endef
ifeq ($(BR2_KERNEL_HEADERS_VERSION),y)
define LINUX_HEADERS_CHECK_VERSION
$(call check_kernel_headers_version,\
$(STAGING_DIR),\
$(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)))
endef
LINUX_HEADERS_POST_INSTALL_STAGING_HOOKS += LINUX_HEADERS_CHECK_VERSION
endif
$(eval $(generic-package))
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