crosstool-ng: scripts/build/kernel

     1 # This file declares functions to install the kernel headers for linux

     2 # Copyright 2007 Yann E. MORIN

     3 # Licensed under the GPL v2. See COPYING in the root of this package

     5 do_print_filename() {

     6     [ "${CT_KERNEL}" = "linux" ] || return 0

     7     case "${CT_KERNEL_LINUX_HEADERS_SANITISED}" in

     8         y)  echo "linux-libc-headers-${CT_KERNEL_VERSION}";;

     9         *)  echo "linux-${CT_KERNEL_VERSION}";;

    10     esac

    11 }

    13 # Download the kernel

    14 do_kernel_get() {

    15     if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then

    16         CT_GetFile "${CT_KERNEL_FILE}"                                                  \

    17                    {ftp,http}://ftp.kernel.org/pub/linux/kernel/v2.{6{,/testing},4,2}   \

    18                    http://ep09.pld-linux.org/~mmazur/linux-libc-headers

    19     fi

    20     return 0

    21 }

    23 # Extract kernel

    24 do_kernel_extract() {

    25     if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" ]; then

    26         CT_ExtractAndPatch "${CT_KERNEL_FILE}"

    27     fi

    28     return 0

    29 }

    31 # Check kernel configuration

    32 do_kernel_check_config() {

    33     # Only the copied or sanitised headers need a config file.

    34     # Pre-existing headers as well as headers_install don't.

    35     if [ "${CT_KERNEL_LINUX_NEEDS_CONFIG}" = "y"        \

    36          -a \( -z "${CT_KERNEL_LINUX_CONFIG_FILE}"      \

    37                -o ! -r "${CT_KERNEL_LINUX_CONFIG_FILE}" \

    38             \)                                          \

    39        ]; then

    40         CT_DoLog WARN "You did not provide a kernel configuration file!"

    41         CT_DoLog WARN "I will try to generate one for you, but beware!"

    43         CT_DoStep INFO "Building a default configuration file for linux kernel"

    45         mkdir -p "${CT_BUILD_DIR}/build-kernel-defconfig"

    46         cd "${CT_BUILD_DIR}/build-kernel-defconfig"

    47         make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" O=$(pwd)  \

    48              ARCH=${CT_KERNEL_ARCH} defconfig               2>&1 |CT_DoLog ALL

    50         CT_KERNEL_LINUX_CONFIG_FILE="$(pwd)/.config"

    52         CT_EndStep

    53     fi

    54 }

    56 # Wrapper to the actual headers install method

    57 do_kernel_headers() {

    58     CT_DoStep INFO "Installing kernel headers"

    60     # Special case when using pre-installed headers

    61     if [ "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" = "y" ]; then

    62         do_kernel_preinstalled

    63     else

    64         # We need to enter this directory to find the kernel version strings

    65         cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

    66         if [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" != "y" ]; then

    67             k_version=$(awk '/^VERSION =/ { print $3 }' Makefile)

    68             k_patchlevel=$(awk '/^PATCHLEVEL =/ { print $3 }' Makefile)

    69             k_sublevel=$(awk '/^SUBLEVEL =/ { print $3 }' Makefile)

    70             k_extraversion=$(awk '/^EXTRAVERSION =/ { print $3 }' Makefile)

    71         else

    72             k_version=$(echo "${CT_KERNEL_VERSION}." |cut -d . -f 1)

    73             k_patchlevel=$(echo "${CT_KERNEL_VERSION}." |cut -d . -f 2)

    74             k_sublevel=$(echo "${CT_KERNEL_VERSION}." |cut -d . -f 3)

    75             k_extraversion=$(echo "${CT_KERNEL_VERSION}." |cut -d . -f 4)

    76         fi

    78         case "${k_version}.${k_patchlevel}" in

    79             2.2|2.4|2.6) ;;

    80             *)  CT_Abort "Unsupported kernel version 'linux-${k_version}.${k_patchlevel}'.";;

    81         esac

    83         # Kernel version that support verbosity will use this, others will ignore it:

    84         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

    86         if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL}" = "y" ]; then

    87             do_kernel_install

    88         elif [ "${CT_KERNEL_LINUX_HEADERS_SANITISED}" = "y" ]; then

    89             do_kernel_sanitised

    90         else [ "${CT_KERNEL_LINUX_HEADERS_COPY}" = "y" ];

    91             do_kernel_copy

    92         fi

    93     fi

    95     CT_EndStep

    96 }

    98 # Install kernel headers using headers_install from kernel sources.

    99 do_kernel_install() {

   100     CT_DoLog DEBUG "Using kernel's headers_install"

   102     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

   103     cd "${CT_BUILD_DIR}/build-kernel-headers"

   105     case "${k_version}.${k_patchlevel}" in

   106         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

   107         *)   CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

   108     esac

   110     CT_DoLog EXTRA "Installing kernel headers"

   111     CT_DoExecLog ALL                                \

   112     make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}"       \

   113          O=$(pwd)                                   \

   114          ARCH=${CT_KERNEL_ARCH}                     \

   115          INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr"   \

   116          ${V_OPT}                                   \

   117          headers_install

   119     if [ "${CT_KERNEL_LINUX_HEADERS_INSTALL_CHECK}" = "y" ]; then

   120         CT_DoLog EXTRA "Checking installed headers"

   121         CT_DoExecLog ALL                                \

   122         make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}"       \

   123              O=$(pwd)                                   \

   124              ARCH=${CT_KERNEL_ARCH}                     \

   125              INSTALL_HDR_PATH="${CT_SYSROOT_DIR}/usr"   \

   126              ${V_OPT}                                   \

   127              headers_check

   128         find "${CT_SYSROOT_DIR}" -type f -name '.check*' -exec rm {} \;

   129     fi

   130 }

   132 # Install kernel headers from oldish Mazur's sanitised headers.

   133 do_kernel_sanitised() {

   134     CT_DoLog EXTRA "Copying sanitised headers"

   135     cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   136     cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL

   137     cp -rv "include/asm-${CT_KERNEL_ARCH}" "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL

   138 }

   140 # Install kernel headers by plain copy.

   141 do_kernel_copy() {

   142     CT_DoLog DEBUG "Copying plain kernel headers"

   143     CT_DoLog WARN "You are using plain kernel headers. You really shouldn't do that."

   144     CT_DoLog WARN "You'd be better off by using installed headers (or sanitised headers)."

   146     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.

   147     CT_DoLog EXTRA "Preparing kernel headers"

   148     case "${k_version}.${k_patchlevel}" in

   149         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   150                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

   151                  CT_DoYes "" |make ARCH=${CT_KERNEL_ARCH} oldconfig

   152                  # 2.4 doesn't follow V=# for verbosity... :-(

   153                  make ARCH=${CT_KERNEL_ARCH} symlinks include/linux/version.h

   154                  ;;

   155         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

   156                  cd "${CT_BUILD_DIR}/build-kernel-headers"

   157                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

   158                  CT_DoYes "" |make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}"         \

   159                                    O=$(pwd) ${V_OPT} ARCH=${CT_KERNEL_ARCH}     \

   160                                    oldconfig

   161                  case "${CT_KERNEL_ARCH}" in

   162                      sh*)        # sh does secret stuff in 'make prepare' that can't be

   163                                  # triggered separately, but happily, it doesn't use

   164                                  # target gcc, so we can use it.

   165                                  # Update: this fails on 2.6.11, as it installs

   166                                  # elfconfig.h, which requires target compiler :-(

   167                                  make ${PARALLELMFLAGS}                 \

   168                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}   \

   169                                       prepare include/linux/version.h

   170                                  ;;

   171                      arm*|cris*) make ${PARALLELMFLAGS}                     \

   172                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}       \

   173                                       include/asm include/linux/version.h   \

   174                                       include/asm-${CT_KERNEL_ARCH}/.arch

   175                                  ;;

   176                      mips*)      # for linux-2.6, 'make prepare' for mips doesn't

   177                                  # actually create any symlinks.  Hope generic is ok.

   178                                  # Note that glibc ignores all -I flags passed in CFLAGS,

   179                                  # so you have to use -isystem.

   180                                  make ${PARALLELMFLAGS}                 \

   181                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}   \

   182                                       include/asm include/linux/version.h

   183                                  TARGET_CFLAGS="${TARGET_CFLAGS} -isystem ${LINUX_HEADER_DIR}/include/asm-mips/mach-generic"

   184                                  ;;

   185                      *)          make ${PARALLELMFLAGS}                 \

   186                                       ARCH=${CT_KERNEL_ARCH} ${V_OPT}   \

   187                                       include/asm include/linux/version.h

   188                                  ;;

   189                  esac

   190                  ;;

   191     esac 2>&1 |CT_DoLog ALL

   193     CT_DoLog EXTRA "Copying kernel headers"

   194     cp -rv include/asm-generic "${CT_HEADERS_DIR}/asm-generic" 2>&1 |CT_DoLog ALL

   195     cp -rv include/linux "${CT_HEADERS_DIR}" 2>&1 |CT_DoLog ALL

   196     cp -rv include/asm-${CT_KERNEL_ARCH} "${CT_HEADERS_DIR}/asm" 2>&1 |CT_DoLog ALL

   197 }

   199 # Use preinstalled headers (most probably by using make headers_install in a

   200 # modified (read: customised) kernel tree). In this case, simply copy

   201 # the headers in place

   202 do_kernel_preinstalled() {

   203     CT_DoLog EXTRA "Copying preinstalled kernel headers"

   205     mkdir -p "${CT_SYSROOT_DIR}/usr"

   206     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"

   207     cp -rv include "${CT_SYSROOT_DIR}/usr" 2>&1 |CT_DoLog ALL

   208 }

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Mon Jul 14 13:51:45 2008 +0000 (2008-07-14)
changeset 654	9d69b3b8185f
parent 523	010f6f4e4dd6
permissions	-rw-r--r--