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 # Check kernel configuration

     6 do_kernel_check_config() {

     7     CT_DoStep INFO "Checking kernel configuration"

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

    10         CT_TestOrAbort "You did not provide a kernel config file!" -n "${CT_KERNEL_LINUX_CONFIG_FILE}" -a -f "${CT_KERNEL_LINUX_CONFIG_FILE}"

    11     fi

    13     CT_EndStep

    14 }

    16 # Wrapper to the actual headers install method

    17 do_kernel_headers() {

    18     CT_DoStep INFO "Installing kernel headers"

    20     # Special case when using pre-installed headers

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

    22         do_kernel_preinstalled

    23     else

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

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

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

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

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

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

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

    31         else

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

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

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

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

    36         fi

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

    39             2.2|2.4|2.6) ;;

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

    41         esac

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

    44         V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"

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

    47             do_kernel_install

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

    49             do_kernel_sanitised

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

    51             do_kernel_copy

    52         fi

    53     fi

    55     CT_EndStep

    56 }

    58 # Install kernel headers using headers_install from kernel sources.

    59 do_kernel_install() {

    60     CT_DoLog EXTRA "Using kernel's headers_install"

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

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

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

    66         2.6) [ ${k_sublevel} -ge 18 ] || CT_Abort "Kernel version >= 2.6.18 is needed to install kernel headers.";;

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

    68     esac

    70     CT_DoLog EXTRA "Configuring kernel headers"

    71     cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

    73                       O="${CT_BUILD_DIR}/build-kernel-headers"  \

    74                       ${V_OPT}                                  \

    75                       ARCH=${CT_KERNEL_ARCH} oldconfig          2>&1 |CT_DoLog DEBUG

    77     CT_DoLog EXTRA "Installing kernel headers"

    78     make ARCH=${CT_KERNEL_ARCH}                     \

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

    80          ${V_OPT}                                   \

    81          headers_install                            2>&1 |CT_DoLog DEBUG

    83     CT_DoLog EXTRA "Checking installed headers"

    84     make ARCH=${CT_KERNEL_ARCH}                     \

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

    86          ${V_OPT}                                   \

    87          headers_check                              2>&1 |CT_DoLog DEBUG

    88 }

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

    91 do_kernel_sanitised() {

    92     CT_DoLog EXTRA "Copying sanitised headers"

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

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

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

    96 }

    98 # Install kernel headers by plain copy.

    99 do_kernel_copy() {

   100     CT_DoLog EXTRA "Copying plain kernel headers"

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

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

   104     # 2.2 and 2.4 don't support building out-of-tree. 2.6 does.

   105     CT_DoLog EXTRA "Preparing kernel headers"

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

   107         2.2|2.4) cd "${CT_SRC_DIR}/${CT_KERNEL_FILE}"

   108                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

   110                  # 2.4 doesn't follow V=# for verbosity... :-(

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

   112                  ;;

   113         2.6)     mkdir -p "${CT_BUILD_DIR}/build-kernel-headers"

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

   115                  cp "${CT_KERNEL_LINUX_CONFIG_FILE}" .config

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

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

   118                                    oldconfig

   119                  case "${CT_KERNEL_ARCH}" in

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

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

   122                                  # target gcc, so we can use it.

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

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

   125                                  make ${PARALLELMFLAGS}                 \

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

   127                                       prepare include/linux/version.h

   128                                  ;;

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

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

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

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

   133                                  ;;

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

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

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

   137                                  # so you have to use -isystem.

   138                                  make ${PARALLELMFLAGS}                 \

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

   140                                       include/asm include/linux/version.h

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

   142                                  ;;

   143                      *)          make ${PARALLELMFLAGS}                 \

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

   145                                       include/asm include/linux/version.h

   146                                  ;;

   147                  esac

   148                  ;;

   149     esac 2>&1 |CT_DoLog DEBUG

   151     CT_DoLog EXTRA "Copying kernel headers"

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

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

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

   155 }

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

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

   159 # the headers in place

   160 do_kernel_preinstalled() {

   161     CT_DoLog EXTRA "Copying preinstalled kernel headers"

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

   164     cd "${CT_KERNEL_LINUX_HEADERS_CUSTOM_DIR}"

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

   166 }

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Wed Apr 11 21:26:03 2007 +0000 (2007-04-11)
changeset 37	21bcbfde8094
parent 1	eeea35fbf182
child 49	f431118daec4
permissions	-rw-r--r--