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

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

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

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

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

    35             \)                                          \

    36        ]; then

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

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

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

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

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

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

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

    47         CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"

    49         CT_EndStep

    50     fi

    52     CT_EndStep

    53 }

    55 # Wrapper to the actual headers install method

    56 do_kernel_headers() {

    57     CT_DoStep INFO "Installing kernel headers"

    59     # Special case when using pre-installed headers

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

    61         do_kernel_preinstalled

    62     else

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

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

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

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

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

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

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

    70         else

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

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

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

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

    75         fi

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

    78             2.2|2.4|2.6) ;;

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

    80         esac

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

    83         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

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

    86             do_kernel_install

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

    88             do_kernel_sanitised

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

    90             do_kernel_copy

    91         fi

    92     fi

    94     CT_EndStep

    95 }

    97 # Install kernel headers using headers_install from kernel sources.

    98 do_kernel_install() {

    99     CT_DoLog EXTRA "Using kernel's headers_install"

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

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

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

   105         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

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

   107     esac

   109     CT_DoLog EXTRA "Installing kernel headers"

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

   111          O="`pwd`"                                  \

   112          ARCH=${CT_KERNEL_ARCH}                     \

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

   114          ${V_OPT}                                   \

   115          headers_install                            2>&1 |CT_DoLog DEBUG

   117     CT_DoLog EXTRA "Checking installed headers"

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

   119          O="`pwd`"                                  \

   120          ARCH=${CT_KERNEL_ARCH}                     \

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

   122          ${V_OPT}                                   \

   123          headers_check                              2>&1 |CT_DoLog DEBUG

   124 }

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

   127 do_kernel_sanitised() {

   128     CT_DoLog EXTRA "Copying sanitised headers"

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

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

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

   132 }

   134 # Install kernel headers by plain copy.

   135 do_kernel_copy() {

   136     CT_DoLog EXTRA "Copying plain kernel headers"

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

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

   140     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.

   141     CT_DoLog EXTRA "Preparing kernel headers"

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

   143         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   144                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

   146                  # 2.4 doesn't follow V=# for verbosity... :-(

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

   148                  ;;

   149         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

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

   151                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

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

   154                                    oldconfig

   155                  case "${CT_KERNEL_ARCH}" in

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

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

   158                                  # target gcc, so we can use it.

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

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

   161                                  make ${PARALLELMFLAGS}                 \

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

   163                                       prepare include/linux/version.h

   164                                  ;;

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

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

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

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

   169                                  ;;

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

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

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

   173                                  # so you have to use -isystem.

   174                                  make ${PARALLELMFLAGS}                 \

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

   176                                       include/asm include/linux/version.h

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

   178                                  ;;

   179                      *)          make ${PARALLELMFLAGS}                 \

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

   181                                       include/asm include/linux/version.h

   182                                  ;;

   183                  esac

   184                  ;;

   185     esac 2>&1 |CT_DoLog DEBUG

   187     CT_DoLog EXTRA "Copying kernel headers"

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

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

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

   191 }

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

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

   195 # the headers in place

   196 do_kernel_preinstalled() {

   197     CT_DoLog EXTRA "Copying preinstalled kernel headers"

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

   200     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"

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

   202 }

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Mon May 07 21:45:31 2007 +0000 (2007-05-07)
changeset 66	c77d59891a0d
parent 64	7dab8d1a2426
child 70	fa53b961cf44
permissions	-rw-r--r--