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# This file declares functions to install the kernel headers for linux
# Copyright 2007 Yann E. MORIN
# Licensed under the GPL v2. See COPYING in the root of this package
CT_DoKernelTupleValues()
{
if [ -z "${CT_ARCH_USE_MMU}" ]; then
# Some no-mmu linux targets requires a -uclinux tuple (like m68k/cf),
# while others must have a -linux tuple. Other targets
# should be added here when someone starts to care about them.
case "${CT_ARCH}" in
arm*|microblaze*) CT_TARGET_KERNEL="linux" ;;
c6x|m68k|xtensa*) CT_TARGET_KERNEL="uclinux" ;;
*) CT_Abort "Unsupported no-mmu arch '${CT_ARCH}'"
esac
fi
}
# Download the kernel
do_kernel_get()
{
CT_Fetch LINUX
}
# Disable building relocs application - it needs <linux/types.h>
# on the host, which may not be present on Cygwin or MacOS; it
# needs <elf.h>, which again is not present on MacOS; and most
# important, we don't need it to install the headers.
# This is not done as a patch, since it varies from Linux version
# to version - patching each particular Linux version would be
# too cumbersome.
linux_disable_build_relocs()
{
sed -i -r 's/(\$\(MAKE\) .* relocs)$/:/' arch/*/Makefile
}
# Extract kernel
do_kernel_extract()
{
# TBD verify linux_disable_build_relocs is run
CT_ExtractPatch LINUX linux_disable_build_relocs
}
# Install kernel headers using headers_install from kernel sources.
do_kernel_headers()
{
local kernel_path
local kernel_arch
CT_DoStep INFO "Installing kernel headers"
mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
kernel_path="${CT_SRC_DIR}/linux"
V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"
kernel_arch="${CT_ARCH}"
case "${CT_ARCH}:${CT_ARCH_BITNESS}" in
# ARM 64 (aka AArch64) is special
arm:64) kernel_arch="arm64";;
esac
CT_DoLog EXTRA "Installing kernel headers"
CT_DoExecLog ALL \
make -C "${kernel_path}" \
BASH="$(which bash)" \
HOSTCC="${CT_BUILD}-gcc" \
CROSS_COMPILE="${CT_TARGET}-" \
O="${CT_BUILD_DIR}/build-kernel-headers" \
ARCH=${kernel_arch} \
INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \
${V_OPT} \
headers_install
if [ "${CT_KERNEL_LINUX_INSTALL_CHECK}" = "y" ]; then
CT_DoLog EXTRA "Checking installed headers"
CT_DoExecLog ALL \
make -C "${kernel_path}" \
BASH="$(which bash)" \
HOSTCC="${CT_BUILD}-gcc" \
CROSS_COMPILE="${CT_TARGET}-" \
O="${CT_BUILD_DIR}/build-kernel-headers" \
ARCH=${kernel_arch} \
INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \
${V_OPT} \
headers_check
fi
# Cleanup
find "${CT_SYSROOT_DIR}" -type f \
\( -name '.install' \
-o -name '..install.cmd' \
-o -name '.check' \
-o -name '..check.cmd' \
\) \
-exec rm {} \;
CT_EndStep
}
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