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 21:44:45 2007 +0000 (2007-06-16)
changeset 164 e78c0b2bc057
parent 161 be4484f10ac7
child 199 d799643901c3
permissions -rw-r--r--
Fix printing components' file names. 
     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     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 }

    12 

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

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

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

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

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

    22     fi

    23     return 0

    24 }

    25 

    26 # Extract kernel

    27 do_kernel_extract() {

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

    29         CT_ExtractAndPatch "${CT_KERNEL_FILE}"

    30     fi

    31     return 0

    32 }

    33 

    34 # Check kernel configuration

    35 do_kernel_check_config() {

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

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

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

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

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

    41             \)                                          \

    42        ]; then

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

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

    45 

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

    47 

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

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

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

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

    52 

    53         CT_KERNEL_LINUX_CONFIG_FILE="`pwd`/.config"

    54 

    55         CT_EndStep

    56     fi

    57 }

    58 

    59 # Wrapper to the actual headers install method

    60 do_kernel_headers() {

    61     CT_DoStep INFO "Installing kernel headers"

    62 

    63     # Special case when using pre-installed headers

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

    65         do_kernel_preinstalled

    66     else

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

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

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

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

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

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

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

    74         else

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

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

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

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

    79         fi

    80 

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

    82             2.2|2.4|2.6) ;;

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

    84         esac

    85 

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

    87         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

    88 

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

    90             do_kernel_install

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

    92             do_kernel_sanitised

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

    94             do_kernel_copy

    95         fi

    96     fi

    97 

    98     CT_EndStep

    99 }

   100 

   101 # Install kernel headers using headers_install from kernel sources.

   102 do_kernel_install() {

   103     CT_DoLog DEBUG "Using kernel's headers_install"

   104 

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

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

   107 

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

   109         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

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

   111     esac

   112 

   113     CT_DoLog EXTRA "Installing kernel 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_install                            2>&1 |CT_DoLog ALL

   120 

   121     CT_DoLog EXTRA "Checking installed headers"

   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                              2>&1 |CT_DoLog ALL

   128 

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

   130 }

   131 

   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 }

   139 

   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)."

   145 

   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

   192 

   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 }

   198 

   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"

   204 

   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 }
crosstool-ng