Import buildroot 2016.02.01

firmware/buildroot/package/linux-headers/linux-headers.mk

@@ -0,0 +1,86 @@
+################################################################################
+#
+# linux-headers
+#
+################################################################################
+
+# This package is used to provide Linux kernel headers for the
+# internal toolchain backend.
+
+ifeq ($(BR2_KERNEL_HEADERS_AS_KERNEL),y)
+
+LINUX_HEADERS_VERSION = none
+LINUX_HEADERS_SOURCE =
+
+LINUX_HEADERS_LICENSE = $(LINUX_LICENSE)
+LINUX_HEADERS_LICENSE_FILES = $(LINUX_LICENSE_FILES)
+
+LINUX_HEADERS_PATCH_DEPENDENCIES = linux
+LINUX_HEADERS_REAL_DIR = $(LINUX_DIR)
+
+else # ! BR2_KERNEL_HEADERS_AS_KERNEL
+
+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_LICENSE = GPLv2
+LINUX_HEADERS_LICENSE_FILES = COPYING
+
+LINUX_HEADERS_REAL_DIR = $(@D)
+
+endif # ! BR2_KERNEL_HEADERS_AS_KERNEL
+
+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 $(LINUX_HEADERS_REAL_DIR); \
+		$(TARGET_MAKE_ENV) $(MAKE) \
+			ARCH=$(KERNEL_ARCH) \
+			HOSTCC="$(HOSTCC)" \
+			HOSTCFLAGS="$(HOSTCFLAGS)" \
+			HOSTCXX="$(HOSTCXX)" \
+			INSTALL_HDR_PATH=$(@D)/usr \
+			headers_install)
+endef
+
+define LINUX_HEADERS_INSTALL_STAGING_CMDS
+	(cd $(LINUX_HEADERS_REAL_DIR); \
+		$(TARGET_MAKE_ENV) $(MAKE) \
+			ARCH=$(KERNEL_ARCH) \
+			HOSTCC="$(HOSTCC)" \
+			HOSTCFLAGS="$(HOSTCFLAGS)" \
+			HOSTCXX="$(HOSTCXX)" \
+			INSTALL_HDR_PATH=$(STAGING_DIR)/usr \
+			headers_install)
+endef
+
+ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_AS_KERNEL),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))