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 # Download the kernel

     6 do_kernel_get() {

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

     8         CT_GetFile "${CT_KERNEL_FILE}"                                  \

     9                    ftp://ftp.kernel.org/pub/linux/kernel/v2.6           \

    10                    ftp://ftp.kernel.org/pub/linux/kernel/v2.4           \

    11                    ftp://ftp.kernel.org/pub/linux/kernel/v2.2           \

    12                    ftp://ftp.kernel.org/pub/linux/kernel/v2.6/testing   \

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

    14     fi

    15     return 0

    16 }

    18 # Extract kernel

    19 do_kernel_extract() {

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

    21         CT_ExtractAndPatch "${CT_KERNEL_FILE}"

    22     fi

    23     return 0

    24 }

    26 # Check kernel configuration

    27 do_kernel_check_config() {

    28     CT_DoStep INFO "Checking kernel configuration"

    30     if [    "${CT_KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR}" != "y" \

    31          -a \( -z "${CT_KERNEL_LINUX_CONFIG_FILE}" -o ! -r "${CT_KERNEL_LINUX_CONFIG_FILE}" \) ]; then

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

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

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

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

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

    39         make -C "${CT_SRC_DIR}/${CT_KERNEL_FILE}" O=`pwd`   \

    40              ARCH=${CT_KERNEL_ARCH} defconfig               2>&1 |CT_DoLog DEBUG

    42         CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"

    44         CT_EndStep

    45     fi

    47     CT_EndStep

    48 }

    50 # Wrapper to the actual headers install method

    51 do_kernel_headers() {

    52     CT_DoStep INFO "Installing kernel headers"

    54     # Special case when using pre-installed headers

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

    56         do_kernel_preinstalled

    57     else

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

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

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

    61             k_version=`awk '/^VERSION =/ { print $3 }' Makefile`

    62             k_patchlevel=`awk '/^PATCHLEVEL =/ { print $3 }' Makefile`

    63             k_sublevel=`awk '/^SUBLEVEL =/ { print $3 }' Makefile`

    64             k_extraversion=`awk '/^EXTRAVERSION =/ { print $3 }' Makefile`

    65         else

    66             k_version=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 1`

    67             k_patchlevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 2`

    68             k_sublevel=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 3`

    69             k_extraversion=`echo "${CT_KERNEL_VERSION}." |cut -d . -f 4`

    70         fi

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

    73             2.2|2.4|2.6) ;;

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

    75         esac

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

    78         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

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

    81             do_kernel_install

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

    83             do_kernel_sanitised

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

    85             do_kernel_copy

    86         fi

    87     fi

    89     CT_EndStep

    90 }

    92 # Install kernel headers using headers_install from kernel sources.

    93 do_kernel_install() {

    94     CT_DoLog EXTRA "Using kernel's headers_install"

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

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

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

   100         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

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

   102     esac

   104     CT_DoLog EXTRA "Installing kernel headers"

   105     make ARCH=${CT_KERNEL_ARCH}                     \

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

   107          ${V_OPT}                                   \

   108          headers_install                            2>&1 |CT_DoLog DEBUG

   110     CT_DoLog EXTRA "Checking installed headers"

   111     make ARCH=${CT_KERNEL_ARCH}                     \

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

   113          ${V_OPT}                                   \

   114          headers_check                              2>&1 |CT_DoLog DEBUG

   115 }

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

   118 do_kernel_sanitised() {

   119     CT_DoLog EXTRA "Copying sanitised headers"

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

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

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

   123 }

   125 # Install kernel headers by plain copy.

   126 do_kernel_copy() {

   127     CT_DoLog EXTRA "Copying plain kernel headers"

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

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

   131     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.

   132     CT_DoLog EXTRA "Preparing kernel headers"

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

   134         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   135                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

   137                  # 2.4 doesn't follow V=# for verbosity... :-(

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

   139                  ;;

   140         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

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

   142                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

   144                                    O="`pwd`" ${V_OPT} ARCH=${CT_KERNEL_ARCH}    \

   145                                    oldconfig

   146                  case "${CT_KERNEL_ARCH}" in

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

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

   149                                  # target gcc, so we can use it.

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

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

   152                                  make ${PARALLELMFLAGS}                 \

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

   154                                       prepare include/linux/version.h

   155                                  ;;

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

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

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

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

   160                                  ;;

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

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

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

   164                                  # so you have to use -isystem.

   165                                  make ${PARALLELMFLAGS}                 \

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

   167                                       include/asm include/linux/version.h

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

   169                                  ;;

   170                      *)          make ${PARALLELMFLAGS}                 \

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

   172                                       include/asm include/linux/version.h

   173                                  ;;

   174                  esac

   175                  ;;

   176     esac 2>&1 |CT_DoLog DEBUG

   178     CT_DoLog EXTRA "Copying kernel headers"

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

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

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

   182 }

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

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

   186 # the headers in place

   187 do_kernel_preinstalled() {

   188     CT_DoLog EXTRA "Copying preinstalled kernel headers"

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

   191     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"

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

   193 }

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Mon May 07 09:04:02 2007 +0000 (2007-05-07)
changeset 63	89b41dbffe8d
parent 62	651912c5477c
child 64	7dab8d1a2426
permissions	-rw-r--r--