yann@1: # This file declares functions to install the kernel headers for linux
yann@1: # Copyright 2007 Yann E. MORIN
yann@1: # Licensed under the GPL v2. See COPYING in the root of this package
yann@1: 
yann@161: do_print_filename() {
yann@161:     [ "${CT_KERNEL}" = "linux" ] || return 0
yann@161:     echo "${CT_KERNEL_FILE}"
yann@161: }
yann@161: 
yann@63: # Download the kernel
yann@63: do_kernel_get() {
yann@63:     if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then
yann@63:         CT_GetFile "${CT_KERNEL_FILE}"                                  \
yann@63:                    ftp://ftp.kernel.org/pub/linux/kernel/v2.6           \
yann@63:                    ftp://ftp.kernel.org/pub/linux/kernel/v2.4           \
yann@63:                    ftp://ftp.kernel.org/pub/linux/kernel/v2.2           \
yann@63:                    ftp://ftp.kernel.org/pub/linux/kernel/v2.6/testing   \
yann@63:                    http://ep09.pld-linux.org/~mmazur/linux-libc-headers
yann@63:     fi
yann@63:     return 0
yann@63: }
yann@63: 
yann@63: # Extract kernel
yann@63: do_kernel_extract() {
yann@63:     if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then
yann@63:         CT_ExtractAndPatch "${CT_KERNEL_FILE}"
yann@63:     fi
yann@63:     return 0
yann@63: }
yann@63: 
yann@1: # Check kernel configuration
yann@1: do_kernel_check_config() {
yann@66:     # Only the copied or sanitised headers need a config file.
yann@66:     # Pre-existing headers as well as headers_install don't.
yann@66:     if [ "${CT_KERNEL_LINUX_NEEDS_CONFIG}" = "y"        \
yann@66:          -a \( -z "${CT_KERNEL_LINUX_CONFIG_FILE}"      \
yann@66:                -o ! -r "${CT_KERNEL_LINUX_CONFIG_FILE}" \
yann@66:             \)                                          \
yann@66:        ]; then
yann@49:         CT_DoLog WARN "You did not provide a kernel configuration file!"
yann@49:         CT_DoLog WARN "I will try to generate one for you, but beware!"
yann@49: 
yann@49:         CT_DoStep INFO "Building a default configuration file for linux kernel"
yann@49: 
yann@49:         mkdir -p "${CT_BUILD_DIR}/build-kernel-defconfig"
yann@49:         cd "${CT_BUILD_DIR}/build-kernel-defconfig"
yann@49:         make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" O=`pwd`   \
yann@78:              ARCH=${CT_KERNEL_ARCH} defconfig               2>&1 |CT_DoLog ALL
yann@49: 
yann@49:         CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"
yann@49: 
yann@49:         CT_EndStep
yann@37:     fi
yann@1: }
yann@1: 
yann@1: # Wrapper to the actual headers install method
yann@1: do_kernel_headers() {
yann@1:     CT_DoStep INFO "Installing kernel headers"
yann@1: 
yann@37:     # Special case when using pre-installed headers
yann@37:     if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" = "y" ]; then
yann@37:         do_kernel_preinstalled
yann@1:     else
yann@37:         # We need to enter this directory to find the kernel version strings
yann@37:         cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
yann@37:         if [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" != "y" ]; then
yann@37:             k_version=`awk '/^VERSION =/ { print $3 }' Makefile`
yann@37:             k_patchlevel=`awk '/^PATCHLEVEL =/ { print $3 }' Makefile`
yann@37:             k_sublevel=`awk '/^SUBLEVEL =/ { print $3 }' Makefile`
yann@37:             k_extraversion=`awk '/^EXTRAVERSION =/ { print $3 }' Makefile`
yann@37:         else
yann@37:             k_version=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 1`
yann@37:             k_patchlevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 2`
yann@37:             k_sublevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 3`
yann@37:             k_extraversion=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 4`
yann@37:         fi
yann@1: 
yann@37:         case "${k_version}.${k_patchlevel}" in
yann@37:             2.2|2.4|2.6) ;;
yann@37:             *)  CT_Abort "Unsupported kernel version \"linux-${k_version}.${k_patchlevel}\".";;
yann@37:         esac
yann@1: 
yann@37:         # Kernel version that support verbosity will use this, others will ignore it:
yann@37:         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"
yann@1: 
yann@37:         if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL}" = "y" ]; then
yann@37:             do_kernel_install
yann@37:         elif [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" = "y" ]; then
yann@37:             do_kernel_sanitised
yann@37:         else [ "${CT_KERNEL_LINUX_HEADERS_COPY}" = "y" ];
yann@37:             do_kernel_copy
yann@37:         fi
yann@1:     fi
yann@1: 
yann@1:     CT_EndStep
yann@1: }
yann@1: 
yann@1: # Install kernel headers using headers_install from kernel sources.
yann@1: do_kernel_install() {
yann@78:     CT_DoLog DEBUG "Using kernel's headers_install"
yann@1: 
yann@1:     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
yann@1:     cd "${CT_BUILD_DIR}/build-kernel-headers"
yann@1: 
yann@1:     case "${k_version}.${k_patchlevel}" in
yann@1:         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;
yann@1:         *)   CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;
yann@1:     esac
yann@1: 
yann@1:     CT_DoLog EXTRA "Installing kernel headers"
yann@64:     make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}"       \
yann@64:          O="`pwd`"                                  \
yann@64:          ARCH=${CT_KERNEL_ARCH}                     \
yann@1:          INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr"   \
yann@1:          ${V_OPT}                                   \
yann@78:          headers_install                            2>&1 |CT_DoLog ALL
yann@1: 
yann@1:     CT_DoLog EXTRA "Checking installed headers"
yann@64:     make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}"       \
yann@64:          O="`pwd`"                                  \
yann@64:          ARCH=${CT_KERNEL_ARCH}                     \
yann@1:          INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr"   \
yann@1:          ${V_OPT}                                   \
yann@78:          headers_check                              2>&1 |CT_DoLog ALL
yann@96: 
yann@96:     find "${CT_SYSROOT_DIR}" -type f -name '.check*' -exec rm {} \;
yann@1: }
yann@1: 
yann@1: # Install kernel headers from oldish Mazur's sanitised headers.
yann@1: do_kernel_sanitised() {
yann@1:     CT_DoLog EXTRA "Copying sanitised headers"
yann@1:     cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
yann@78:     cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL
yann@78:     cp -rv "include/asm-${CT_KERNEL_ARCH}" "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL
yann@1: }
yann@1: 
yann@1: # Install kernel headers by plain copy.
yann@1: do_kernel_copy() {
yann@78:     CT_DoLog DEBUG "Copying plain kernel headers"
yann@1:     CT_DoLog WARN "You are using plain kernel headers. You really shouldn't do that."
yann@1:     CT_DoLog WARN "You'd be better off by using installed headers (or sanitised headers)."
yann@1: 
yann@1:     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.
yann@1:     CT_DoLog EXTRA "Preparing kernel headers"
yann@1:     case "${k_version}.${k_patchlevel}" in
yann@1:         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"
yann@1:                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config
yann@1:                  CT_DoYes "" |make ARCH=${CT_KERNEL_ARCH} oldconfig
yann@1:                  # 2.4 doesn't follow V=# for verbosity... :-(
yann@1:                  make ARCH=${CT_KERNEL_ARCH} symlinks include/linux/version.h
yann@1:                  ;;
yann@1:         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"
yann@1:                  cd "${CT_BUILD_DIR}/build-kernel-headers"
yann@1:                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config
yann@1:                  CT_DoYes "" |make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}"         \
yann@1:                                    O="`pwd`" ${V_OPT} ARCH=${CT_KERNEL_ARCH}    \
yann@1:                                    oldconfig
yann@1:                  case "${CT_KERNEL_ARCH}" in
yann@1:                      sh*)        # sh does secret stuff in 'make prepare' that can't be
yann@1:                                  # triggered separately, but happily, it doesn't use
yann@1:                                  # target gcc, so we can use it.
yann@1:                                  # Update: this fails on 2.6.11, as it installs
yann@1:                                  # elfconfig.h, which requires target compiler :-(
yann@1:                                  make ${PARALLELMFLAGS}                 \
yann@1:                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}   \
yann@1:                                       prepare include/linux/version.h
yann@1:                                  ;;
yann@1:                      arm*|cris*) make ${PARALLELMFLAGS}                 \
yann@1:                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}       \
yann@1:                                       include/asm include/linux/version.h   \
yann@1:                                       include/asm-${CT_KERNEL_ARCH}/.arch
yann@1:                                  ;;
yann@1:                      mips*)      # for linux-2.6, 'make prepare' for mips doesn't 
yann@1:                                  # actually create any symlinks.  Hope generic is ok.
yann@1:                                  # Note that glibc ignores all -I flags passed in CFLAGS,
yann@1:                                  # so you have to use -isystem.
yann@1:                                  make ${PARALLELMFLAGS}                 \
yann@1:                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}   \
yann@1:                                       include/asm include/linux/version.h
yann@1:                                  TARGET_CFLAGS="${TARGET_CFLAGS} -isystem ${LINUX_HEADER_DIR}/include/asm-mips/mach-generic"
yann@1:                                  ;;
yann@1:                      *)          make ${PARALLELMFLAGS}                 \
yann@1:                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}   \
yann@1:                                       include/asm include/linux/version.h
yann@1:                                  ;;
yann@1:                  esac
yann@1:                  ;;
yann@78:     esac 2>&1 |CT_DoLog ALL
yann@1: 
yann@1:     CT_DoLog EXTRA "Copying kernel headers"
yann@78:     cp -rv include/asm-generic "${CT_HEADERS_DIR}/asm-generic" 2>&1 |CT_DoLog ALL
yann@78:     cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL
yann@78:     cp -rv include/asm-${CT_KERNEL_ARCH} "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL
yann@1: }
yann@37: 
yann@37: # Use preinstalled headers (most probably by using make headers_install in a
yann@37: # modified (read: customised) kernel tree). In this case, simply copy
yann@37: # the headers in place
yann@37: do_kernel_preinstalled() {
yann@37:     CT_DoLog EXTRA "Copying preinstalled kernel headers"
yann@37: 
yann@37:     mkdir -p "${CT_SYSROOT_DIR}/usr"
yann@37:     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"
yann@78:     cp -rv include "${CT_SYSROOT_DIR}/usr" 2>&1 |CT_DoLog ALL
yann@37: }