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

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

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

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

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

    33             \)                                          \

    34        ]; then

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

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

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

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

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

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

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

    45         CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"

    47         CT_EndStep

    48     fi

    49 }

    51 # Wrapper to the actual headers install method

    52 do_kernel_headers() {

    53     CT_DoStep INFO "Installing kernel headers"

    55     # Special case when using pre-installed headers

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

    57         do_kernel_preinstalled

    58     else

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

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

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

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

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

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

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

    66         else

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

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

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

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

    71         fi

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

    74             2.2|2.4|2.6) ;;

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

    76         esac

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

    79         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

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

    82             do_kernel_install

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

    84             do_kernel_sanitised

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

    86             do_kernel_copy

    87         fi

    88     fi

    90     CT_EndStep

    91 }

    93 # Install kernel headers using headers_install from kernel sources.

    94 do_kernel_install() {

    95     CT_DoLog EXTRA "Using kernel's headers_install"

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

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

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

   101         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

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

   103     esac

   105     CT_DoLog EXTRA "Installing kernel headers"

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

   107          O="`pwd`"                                  \

   108          ARCH=${CT_KERNEL_ARCH}                     \

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

   110          ${V_OPT}                                   \

   111          headers_install                            2>&1 |CT_DoLog DEBUG

   113     CT_DoLog EXTRA "Checking installed headers"

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

   115          O="`pwd`"                                  \

   116          ARCH=${CT_KERNEL_ARCH}                     \

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

   118          ${V_OPT}                                   \

   119          headers_check                              2>&1 |CT_DoLog DEBUG

   120 }

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

   123 do_kernel_sanitised() {

   124     CT_DoLog EXTRA "Copying sanitised headers"

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

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

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

   128 }

   130 # Install kernel headers by plain copy.

   131 do_kernel_copy() {

   132     CT_DoLog EXTRA "Copying plain kernel headers"

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

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

   136     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.

   137     CT_DoLog EXTRA "Preparing kernel headers"

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

   139         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   140                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

   142                  # 2.4 doesn't follow V=# for verbosity... :-(

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

   144                  ;;

   145         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

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

   147                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

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

   150                                    oldconfig

   151                  case "${CT_KERNEL_ARCH}" in

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

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

   154                                  # target gcc, so we can use it.

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

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

   157                                  make ${PARALLELMFLAGS}                 \

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

   159                                       prepare include/linux/version.h

   160                                  ;;

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

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

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

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

   165                                  ;;

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

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

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

   169                                  # so you have to use -isystem.

   170                                  make ${PARALLELMFLAGS}                 \

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

   172                                       include/asm include/linux/version.h

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

   174                                  ;;

   175                      *)          make ${PARALLELMFLAGS}                 \

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

   177                                       include/asm include/linux/version.h

   178                                  ;;

   179                  esac

   180                  ;;

   181     esac 2>&1 |CT_DoLog DEBUG

   183     CT_DoLog EXTRA "Copying kernel headers"

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

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

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

   187 }

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

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

   191 # the headers in place

   192 do_kernel_preinstalled() {

   193     CT_DoLog EXTRA "Copying preinstalled kernel headers"

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

   196     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"

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

   198 }

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Mon May 07 22:09:36 2007 +0000 (2007-05-07)
changeset 70	fa53b961cf44
parent 66	c77d59891a0d
child 78	c3868084d81a
permissions	-rw-r--r--