# 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 do_print_filename() { [ "${CT_KERNEL}" = "linux" ] || return 0 case "${CT_KERNEL_LINUX_HEADERS_SANITISED}" in y) echo "linux-libc-headers-${CT_KERNEL_VERSION}";; *) echo "linux-${CT_KERNEL_VERSION}";; esac } # Download the kernel do_kernel_get() { if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then CT_GetFile "${CT_KERNEL_FILE}" \ ftp://ftp.kernel.org/pub/linux/kernel/v2.6 \ ftp://ftp.kernel.org/pub/linux/kernel/v2.4 \ ftp://ftp.kernel.org/pub/linux/kernel/v2.2 \ ftp://ftp.kernel.org/pub/linux/kernel/v2.6/testing \ http://ep09.pld-linux.org/~mmazur/linux-libc-headers fi return 0 } # Extract kernel do_kernel_extract() { if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then CT_ExtractAndPatch "${CT_KERNEL_FILE}" fi return 0 } # Check kernel configuration do_kernel_check_config() { # Only the copied or sanitised headers need a config file. # Pre-existing headers as well as headers_install don't. if [ "${CT_KERNEL_LINUX_NEEDS_CONFIG}" = "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=${CT_KERNEL_ARCH} defconfig 2>&1 |CT_DoLog ALL CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config" CT_EndStep fi } # Wrapper to the actual headers install method do_kernel_headers() { CT_DoStep INFO "Installing kernel headers" # Special case when using pre-installed headers if [ "${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 [ "${CT_KERNEL_LINUX_HEADERS_COPY}" = "y" ]; do_kernel_copy fi fi CT_EndStep } # Install kernel headers using headers_install from kernel sources. do_kernel_install() { CT_DoLog DEBUG "Using kernel's headers_install" mkdir -p "${CT_BUILD_DIR}/build-kernel-headers" cd "${CT_BUILD_DIR}/build-kernel-headers" case "${k_version}.${k_patchlevel}" in 2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";; *) CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";; esac CT_DoLog EXTRA "Installing kernel headers" make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \ O="`pwd`" \ ARCH=${CT_KERNEL_ARCH} \ INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \ ${V_OPT} \ headers_install 2>&1 |CT_DoLog ALL if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL_CHECK}" = "y" ]; then CT_DoLog EXTRA "Checking installed headers" make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" \ O="`pwd`" \ ARCH=${CT_KERNEL_ARCH} \ INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr" \ ${V_OPT} \ headers_check 2>&1 |CT_DoLog ALL find "${CT_SYSROOT_DIR}" -type f -name '.check*' -exec rm {} \; fi } # 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 "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL cp -rv "include/asm-${CT_KERNEL_ARCH}" "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL } # Install kernel headers by plain copy. do_kernel_copy() { CT_DoLog DEBUG "Copying plain kernel headers" CT_DoLog WARN "You are using plain kernel headers. You really shouldn't do that." CT_DoLog WARN "You'd be better off by using installed headers (or sanitised headers)." # 2.2 and 2.4 don't support building out-of-tree. 2.6 does. CT_DoLog EXTRA "Preparing kernel headers" case "${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} ${V_OPT} \ include/asm include/linux/version.h ;; esac ;; esac 2>&1 |CT_DoLog ALL CT_DoLog EXTRA "Copying kernel headers" cp -rv include/asm-generic "${CT_HEADERS_DIR}/asm-generic" 2>&1 |CT_DoLog ALL cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL cp -rv include/asm-${CT_KERNEL_ARCH} "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL } # Use preinstalled headers (most probably by using make headers_install in a # modified (read: customised) kernel tree). In this case, simply copy # the headers in place do_kernel_preinstalled() { CT_DoLog EXTRA "Copying preinstalled kernel headers" mkdir -p "${CT_SYSROOT_DIR}/usr" cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}" cp -rv include "${CT_SYSROOT_DIR}/usr" 2>&1 |CT_DoLog ALL }