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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
# Check kernel configuration
do_kernel_check_config() {
CT_DoStep INFO "Checking kernel configuration"
if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" \
-a \( -z "${CT_KERNEL_LINUX_CONFIG_FILE}" -o ! -r "${CT_KERNEL_LINUX_CONFIG_FILE}" \) ]; then
CT_DoLog WARN "You did not provide a kernel configuration file!"
CT_DoLog WARN "I will try to generate one for you, but beware!"
CT_DoStep INFO "Building a default configuration file for linux kernel"
mkdir -p "${CT_BUILD_DIR}/build-kernel-defconfig"
cd "${CT_BUILD_DIR}/build-kernel-defconfig"
make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" O=`pwd` \
ARCH=${CT_KERNEL_ARCH} defconfig 2>&1 |CT_DoLog DEBUG
CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"
CT_EndStep
fi
CT_EndStep
}
# Wrapper to the actual headers install method
do_kernel_headers() {
CT_DoStep INFO "Installing kernel headers"
# Special case when using pre-installed headers
if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" = "y" ]; then
do_kernel_preinstalled
else
# We need to enter this directory to find the kernel version strings
cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
if [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" != "y" ]; then
k_version=`awk '/^VERSION =/ { print $3 }' Makefile`
k_patchlevel=`awk '/^PATCHLEVEL =/ { print $3 }' Makefile`
k_sublevel=`awk '/^SUBLEVEL =/ { print $3 }' Makefile`
k_extraversion=`awk '/^EXTRAVERSION =/ { print $3 }' Makefile`
else
k_version=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 1`
k_patchlevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 2`
k_sublevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 3`
k_extraversion=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 4`
fi
case "${k_version}.${k_patchlevel}" in
2.2|2.4|2.6) ;;
*) CT_Abort "Unsupported kernel version \"linux-${k_version}.${k_patchlevel}\".";;
esac
# Kernel version that support verbosity will use this, others will ignore it:
V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"
if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL}" = "y" ]; then
do_kernel_install
elif [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" = "y" ]; then
do_kernel_sanitised
else [ "${CT_KERNEL_LINUX_HEADERS_COPY}" = "y" ];
do_kernel_copy
fi
fi
CT_EndStep
}
# Install kernel headers using headers_install from kernel sources.
do_kernel_install() {
CT_DoLog EXTRA "Using kernel's headers_install"
mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
cd "${CT_BUILD_DIR}/build-kernel-headers"
case "${k_version}.${k_patchlevel}" in
2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;
*) CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;
esac
CT_DoLog EXTRA "Installing kernel headers"
make ARCH=${CT_KERNEL_ARCH} \
INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \
${V_OPT} \
headers_install 2>&1 |CT_DoLog DEBUG
CT_DoLog EXTRA "Checking installed headers"
make ARCH=${CT_KERNEL_ARCH} \
INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \
${V_OPT} \
headers_check 2>&1 |CT_DoLog DEBUG
}
# Install kernel headers from oldish Mazur's sanitised headers.
do_kernel_sanitised() {
CT_DoLog EXTRA "Copying sanitised headers"
cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog DEBUG
cp -rv "include/asm-${CT_KERNEL_ARCH}" "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog DEBUG
}
# Install kernel headers by plain copy.
do_kernel_copy() {
CT_DoLog EXTRA "Copying plain kernel headers"
CT_DoLog WARN "You are using plain kernel headers. You really shouldn't do that."
CT_DoLog WARN "You'd be better off by using installed headers (or sanitised headers)."
# 2.2 and 2.4 don't support building out-of-tree. 2.6 does.
CT_DoLog EXTRA "Preparing kernel headers"
case "${k_version}.${k_patchlevel}" in
2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config
CT_DoYes "" |make ARCH=${CT_KERNEL_ARCH} oldconfig
# 2.4 doesn't follow V=# for verbosity... :-(
make ARCH=${CT_KERNEL_ARCH} symlinks include/linux/version.h
;;
2.6) mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
cd "${CT_BUILD_DIR}/build-kernel-headers"
cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config
CT_DoYes "" |make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \
O="`pwd`" ${V_OPT} ARCH=${CT_KERNEL_ARCH} \
oldconfig
case "${CT_KERNEL_ARCH}" in
sh*) # sh does secret stuff in 'make prepare' that can't be
# triggered separately, but happily, it doesn't use
# target gcc, so we can use it.
# Update: this fails on 2.6.11, as it installs
# elfconfig.h, which requires target compiler :-(
make ${PARALLELMFLAGS} \
ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
prepare include/linux/version.h
;;
arm*|cris*) make ${PARALLELMFLAGS} \
ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
include/asm include/linux/version.h \
include/asm-${CT_KERNEL_ARCH}/.arch
;;
mips*) # for linux-2.6, 'make prepare' for mips doesn't
# actually create any symlinks. Hope generic is ok.
# Note that glibc ignores all -I flags passed in CFLAGS,
# so you have to use -isystem.
make ${PARALLELMFLAGS} \
ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
include/asm include/linux/version.h
TARGET_CFLAGS="${TARGET_CFLAGS} -isystem ${LINUX_HEADER_DIR}/include/asm-mips/mach-generic"
;;
*) make ${PARALLELMFLAGS} \
ARCH=${CT_KERNEL_ARCH} ${V_OPT} \
include/asm include/linux/version.h
;;
esac
;;
esac 2>&1 |CT_DoLog DEBUG
CT_DoLog EXTRA "Copying kernel headers"
cp -rv include/asm-generic "${CT_HEADERS_DIR}/asm-generic" 2>&1 |CT_DoLog DEBUG
cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog DEBUG
cp -rv include/asm-${CT_KERNEL_ARCH} "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog DEBUG
}
# Use preinstalled headers (most probably by using make headers_install in a
# modified (read: customised) kernel tree). In this case, simply copy
# the headers in place
do_kernel_preinstalled() {
CT_DoLog EXTRA "Copying preinstalled kernel headers"
mkdir -p "${CT_SYSROOT_DIR}/usr"
cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"
cp -rv include "${CT_SYSROOT_DIR}/usr" 2>&1 |CT_DoLog DEBUG
}
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