Mercurialcrosstool-ng / file revision
summary | shortlog | changelog | graph | tags | branches | files | changeset | file | latest | revisions | annotate | diff | raw | help
scripts/build/kernel_linux.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Jun 16 20:47:58 2007 +0000 (2007-06-16)
changeset 163 ade268f78fdc
parent 96 aa1a9fbd6eb8
child 164 e78c0b2bc057
permissions -rw-r--r--
Answer default values when doing a defoldconfig. 
     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

     4 

     5 do_print_filename() {

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

     7     echo "${CT_KERNEL_FILE}"

     8 }

     9 

    10 # Download the kernel

    11 do_kernel_get() {

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

    13         CT_GetFile "${CT_KERNEL_FILE}"                                  \

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

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

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

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

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

    19     fi

    20     return 0

    21 }

    22 

    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 }

    30 

    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!"

    42 

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

    44 

    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

    49 

    50         CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"

    51 

    52         CT_EndStep

    53     fi

    54 }

    55 

    56 # Wrapper to the actual headers install method

    57 do_kernel_headers() {

    58     CT_DoStep INFO "Installing kernel headers"

    59 

    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

    77 

    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

    82 

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

    84         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

    85 

    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

    94 

    95     CT_EndStep

    96 }

    97 

    98 # Install kernel headers using headers_install from kernel sources.

    99 do_kernel_install() {

   100     CT_DoLog DEBUG "Using kernel's headers_install"

   101 

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

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

   104 

   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

   109 

   110     CT_DoLog EXTRA "Installing kernel headers"

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

   112          O="`pwd`"                                  \

   113          ARCH=${CT_KERNEL_ARCH}                     \

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

   115          ${V_OPT}                                   \

   116          headers_install                            2>&1 |CT_DoLog ALL

   117 

   118     CT_DoLog EXTRA "Checking installed headers"

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

   120          O="`pwd`"                                  \

   121          ARCH=${CT_KERNEL_ARCH}                     \

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

   123          ${V_OPT}                                   \

   124          headers_check                              2>&1 |CT_DoLog ALL

   125 

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

   127 }

   128 

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

   130 do_kernel_sanitised() {

   131     CT_DoLog EXTRA "Copying sanitised headers"

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

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

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

   135 }

   136 

   137 # Install kernel headers by plain copy.

   138 do_kernel_copy() {

   139     CT_DoLog DEBUG "Copying plain kernel headers"

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

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

   142 

   143     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.

   144     CT_DoLog EXTRA "Preparing kernel headers"

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

   146         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   147                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

   149                  # 2.4 doesn't follow V=# for verbosity... :-(

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

   151                  ;;

   152         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

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

   154                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

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

   157                                    oldconfig

   158                  case "${CT_KERNEL_ARCH}" in

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

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

   161                                  # target gcc, so we can use it.

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

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

   164                                  make ${PARALLELMFLAGS}                 \

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

   166                                       prepare include/linux/version.h

   167                                  ;;

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

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

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

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

   172                                  ;;

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

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

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

   176                                  # so you have to use -isystem.

   177                                  make ${PARALLELMFLAGS}                 \

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

   179                                       include/asm include/linux/version.h

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

   181                                  ;;

   182                      *)          make ${PARALLELMFLAGS}                 \

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

   184                                       include/asm include/linux/version.h

   185                                  ;;

   186                  esac

   187                  ;;

   188     esac 2>&1 |CT_DoLog ALL

   189 

   190     CT_DoLog EXTRA "Copying kernel headers"

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

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

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

   194 }

   195 

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

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

   198 # the headers in place

   199 do_kernel_preinstalled() {

   200     CT_DoLog EXTRA "Copying preinstalled kernel headers"

   201 

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

   203     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"

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

   205 }
crosstool-ng