scripts/crosstool-NG.sh.in
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Aug 02 20:06:44 2009 +0200 (2009-08-02)
changeset 1446 0a44fc4d6bd0
parent 1445 9f7946c892da
child 1448 8a21b4be90cd
permissions -rw-r--r--
[config] Allow user to specify custom CONFIG_SHELL

In case the shell the user wants to use as CONFIG_SHELL is located in a
weird place (eg. /opt/bash/bin/bash), or is weirdly named (eg. bash-4),
let the user enter the patch to the shell.
     1 #!@@CT_bash@@
     2 # Copyright 2007 Yann E. MORIN
     3 # Licensed under the GPL v2. See COPYING in the root of this package.
     4 
     5 # This is the main entry point to crosstool
     6 # This will:
     7 #   - download, extract and patch the toolchain components
     8 #   - build and install each components in turn
     9 #   - and eventually test the resulting toolchain
    10 
    11 # What this file does is prepare the environment, based upon the user-choosen
    12 # options. It also checks the existing environment for un-friendly variables,
    13 # and builds the tools.
    14 
    15 # Parse the common functions
    16 # Note: some initialisation and sanitizing is done while parsing this file,
    17 # most notably:
    18 #  - set trap handler on errors,
    19 #  - don't hash commands lookups,
    20 #  - initialise logging.
    21 . "${CT_LIB_DIR}/scripts/functions"
    22 
    23 # Parse the configuration file
    24 # It has some info about the logging facility, so include it early
    25 . .config
    26 # Yes! We can do full logging from now on!
    27 
    28 # Overide the locale early, in case we ever translate crosstool-NG messages
    29 [ -z "${CT_NO_OVERIDE_LC_MESSAGES}" ] && export LC_ALL=C
    30 
    31 # Some sanity checks in the environment and needed tools
    32 CT_DoLog INFO "Performing some trivial sanity checks"
    33 CT_TestAndAbort "Don't set LD_LIBRARY_PATH. It screws up the build." -n "${LD_LIBRARY_PATH}"
    34 CT_TestAndAbort "Don't set CFLAGS. It screws up the build." -n "${CFLAGS}"
    35 CT_TestAndAbort "Don't set CXXFLAGS. It screws up the build." -n "${CXXFLAGS}"
    36 CT_Test "GREP_OPTIONS screws up the build. Resetting." -n "${GREP_OPTIONS}"
    37 export GREP_OPTIONS=
    38 
    39 # Some sanity checks on paths content
    40 for d in            \
    41     LOCAL_TARBALLS  \
    42     WORK            \
    43     PREFIX          \
    44     INSTALL         \
    45     ; do
    46         eval dir="\${CT_${d}_DIR}"
    47         case "${dir}" in
    48             *" "*)
    49                 CT_Abort "'CT_${d}_DIR'='${dir}' contains a space in it.\nDon't use spaces in paths, it breaks things."
    50                 ;;
    51         esac
    52 done
    53 
    54 # Where will we work?
    55 CT_WORK_DIR="${CT_WORK_DIR:-${CT_TOP_DIR}/targets}"
    56 CT_DoExecLog ALL mkdir -p "${CT_WORK_DIR}"
    57 
    58 # Check build file system case-sensitiveness
    59 CT_DoExecLog DEBUG touch "${CT_WORK_DIR}/foo"
    60 CT_TestAndAbort "Your file system in '${CT_WORK_DIR}' is *not* case-sensitive!" -f "${CT_WORK_DIR}/FOO"
    61 CT_DoExecLog DEBUG rm -f "${CT_WORK_DIR}/foo"
    62 
    63 # What's our shell?
    64 # Will be plain /bin/sh on most systems, except if we have /bin/ash and we
    65 # _explictly_ required using it
    66 case "${CT_CONFIG_SHELL}" in
    67     sh)     CT_SHELL="/bin/sh";;
    68     ash)    CT_SHELL="/bin/ash";;
    69     bash)   CT_SHELL="${BASH}";;
    70     custom) CT_SHELL="${CT_CONFIG_SHELL_CUSTOM_PATH}";;
    71 esac
    72 
    73 # Check the user is using an existing SHELL to be used by ./configure and Makefiles
    74 CT_TestOrAbort "The CONFIG_SHELL '${CT_CONFIG_SHELL}' (${CT_SHELL}) is not valid" -f "${CT_SHELL}" -a -x "${CT_SHELL}"
    75 
    76 # Create the bin-overide early
    77 # Contains symlinks to the tools found by ./configure
    78 # Note: CT_DoLog and CT_DoExecLog do not use any of those tool, so
    79 # they can be safely used
    80 CT_BIN_OVERIDE_DIR="${CT_WORK_DIR}/bin"
    81 CT_DoLog DEBUG "Creating bin-overide for tools in '${CT_BIN_OVERIDE_DIR}'"
    82 CT_DoExecLog DEBUG mkdir -p "${CT_BIN_OVERIDE_DIR}"
    83 cat "${CT_LIB_DIR}/paths.mk" |while read trash line; do
    84     tool="${line%%=*}"
    85     path="${line#*=}"
    86     CT_DoLog DEBUG "  '${tool}' -> '${path}'"
    87     printf "#${BANG}${CT_SHELL}\nexec '${path}' \"\${@}\"\n" >"${CT_BIN_OVERIDE_DIR}/${tool}"
    88     CT_DoExecLog ALL chmod 700 "${CT_BIN_OVERIDE_DIR}/${tool}"
    89 done
    90 export PATH="${CT_BIN_OVERIDE_DIR}:${PATH}"
    91 
    92 # Start date. Can't be done until we know the locale
    93 # Also requires the bin-override tools
    94 CT_STAR_DATE=$(CT_DoDate +%s%N)
    95 CT_STAR_DATE_HUMAN=$(CT_DoDate +%Y%m%d.%H%M%S)
    96 
    97 # Log real begining of build, now
    98 CT_DoLog INFO "Build started ${CT_STAR_DATE_HUMAN}"
    99 
   100 # renice oursleves
   101 CT_DoExecLog DEBUG renice ${CT_NICE} $$
   102 
   103 CT_DoStep DEBUG "Dumping user-supplied crosstool-NG configuration"
   104 CT_DoExecLog DEBUG grep -E '^(# |)CT_' .config
   105 CT_EndStep
   106 
   107 CT_DoLog DEBUG "Unsetting and unexporting MAKEFLAGS"
   108 unset MAKEFLAGS
   109 export MAKEFLAGS
   110 
   111 CT_DoLog INFO "Building environment variables"
   112 
   113 # Include sub-scripts instead of calling them: that way, we do not have to
   114 # export any variable, nor re-parse the configuration and functions files.
   115 . "${CT_LIB_DIR}/scripts/build/internals.sh"
   116 . "${CT_LIB_DIR}/scripts/build/arch/${CT_ARCH}.sh"
   117 . "${CT_LIB_DIR}/scripts/build/kernel/${CT_KERNEL}.sh"
   118 . "${CT_LIB_DIR}/scripts/build/companion_libs/gmp.sh"
   119 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpfr.sh"
   120 . "${CT_LIB_DIR}/scripts/build/companion_libs/ppl.sh"
   121 . "${CT_LIB_DIR}/scripts/build/companion_libs/cloog.sh"
   122 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpc.sh"
   123 . "${CT_LIB_DIR}/scripts/build/binutils/binutils.sh"
   124 . "${CT_LIB_DIR}/scripts/build/binutils/elf2flt.sh"
   125 . "${CT_LIB_DIR}/scripts/build/libc/${CT_LIBC}.sh"
   126 . "${CT_LIB_DIR}/scripts/build/cc/${CT_CC}.sh"
   127 . "${CT_LIB_DIR}/scripts/build/tools.sh"
   128 . "${CT_LIB_DIR}/scripts/build/debug.sh"
   129 
   130 # Target tuple: CT_TARGET needs a little love:
   131 CT_DoBuildTargetTuple
   132 
   133 # Kludge: If any of the configured options needs CT_TARGET,
   134 # then rescan the options file now:
   135 . .config
   136 
   137 # Second kludge: merge user-supplied target CFLAGS with architecture-provided
   138 # target CFLAGS. Do the same for LDFLAGS in case it happens in the future.
   139 # Put user-supplied flags at the end, so that they take precedence.
   140 CT_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_TARGET_CFLAGS}"
   141 CT_TARGET_LDFLAGS="${CT_ARCH_TARGET_LDFLAGS} ${CT_TARGET_LDFLAGS}"
   142 CT_CC_CORE_EXTRA_CONFIG="${CT_ARCH_CC_CORE_EXTRA_CONFIG} ${CT_CC_CORE_EXTRA_CONFIG}"
   143 CT_CC_EXTRA_CONFIG="${CT_ARCH_CC_EXTRA_CONFIG} ${CT_CC_EXTRA_CONFIG}"
   144 
   145 # Compute the working directories names
   146 CT_TARBALLS_DIR="${CT_WORK_DIR}/tarballs"
   147 CT_SRC_DIR="${CT_WORK_DIR}/src"
   148 CT_BUILD_DIR="${CT_WORK_DIR}/${CT_TARGET}/build"
   149 CT_STATE_DIR="${CT_WORK_DIR}/${CT_TARGET}/state"
   150 CT_CONFIG_DIR="${CT_BUILD_DIR}/configs"
   151 
   152 # Note: we'll always install the core compiler in its own directory, so as to
   153 # not mix the two builds: core and final.
   154 CT_CC_CORE_STATIC_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-static"
   155 CT_CC_CORE_SHARED_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-shared"
   156 
   157 # Set LD_LIBRARY_PATH to point to prefix/lib so we can find our own
   158 # libraries; add as first path, so we get hit first by the dynamic linker
   159 CT_SetLibPath "${CT_PREFIX_DIR}/lib" first
   160 
   161 # We must ensure that we can restart if asked for!
   162 if [ -n "${CT_RESTART}" -a ! -d "${CT_STATE_DIR}"  ]; then
   163     CT_DoLog ERROR "You asked to restart a non-restartable build"
   164     CT_DoLog ERROR "This happened because you didn't set CT_DEBUG_CT_SAVE_STEPS"
   165     CT_DoLog ERROR "in the config options for the previous build, or the state"
   166     CT_DoLog ERROR "directory for the previous build was deleted."
   167     CT_Abort "I will stop here to avoid any carnage"
   168 fi
   169 
   170 # If the local tarball directory does not exist, say so, and don't try to save there!
   171 if [ ! -d "${CT_LOCAL_TARBALLS_DIR}" ]; then
   172     CT_DoLog WARN "Directory '${CT_LOCAL_TARBALLS_DIR}' does not exist. Will not save downloaded tarballs to local storage."
   173     CT_SAVE_TARBALLS=
   174 fi
   175 
   176 # Check now if we can write to the destination directory:
   177 if [ -d "${CT_INSTALL_DIR}" ]; then
   178     CT_TestAndAbort "Destination directory '${CT_INSTALL_DIR}' is not removable" ! -w $(dirname "${CT_INSTALL_DIR}")
   179 fi
   180 
   181 # Good, now grab a bit of informations on the system we're being run on,
   182 # just in case something goes awok, and it's not our fault:
   183 CT_SYS_USER=$(id -un)
   184 CT_SYS_HOSTNAME=$(hostname -f 2>/dev/null || true)
   185 # Hmmm. Some non-DHCP-enabled machines do not have an FQDN... Fall back to node name.
   186 CT_SYS_HOSTNAME="${CT_SYS_HOSTNAME:-$(uname -n)}"
   187 CT_SYS_KERNEL=$(uname -s)
   188 CT_SYS_REVISION=$(uname -r)
   189 # MacOS X lacks '-o' :
   190 CT_SYS_OS=$(uname -o || echo "Unknown (maybe MacOS-X)")
   191 CT_SYS_MACHINE=$(uname -m)
   192 CT_SYS_PROCESSOR=$(uname -p)
   193 CT_SYS_GCC=$(gcc -dumpversion)
   194 CT_SYS_TARGET=$(CT_DoConfigGuess)
   195 CT_TOOLCHAIN_ID="crosstool-${CT_VERSION} build ${CT_STAR_DATE_HUMAN} by ${CT_SYS_USER}@${CT_SYS_HOSTNAME}"
   196 
   197 CT_DoLog EXTRA "Preparing working directories"
   198 
   199 # Ah! The build directory shall be eradicated, even if we restart!
   200 if [ -d "${CT_BUILD_DIR}" ]; then
   201     CT_DoForceRmdir "${CT_BUILD_DIR}"
   202 fi
   203 
   204 # Don't eradicate directories if we need to restart
   205 if [ -z "${CT_RESTART}" ]; then
   206     # Get rid of pre-existing installed toolchain and previous build directories.
   207     # We need to do that _before_ we can safely log, because the log file will
   208     # most probably be in the toolchain directory.
   209     if [ "${CT_FORCE_DOWNLOAD}" = "y" -a -d "${CT_TARBALLS_DIR}" ]; then
   210         CT_DoForceRmdir "${CT_TARBALLS_DIR}"
   211     fi
   212     if [ "${CT_FORCE_EXTRACT}" = "y" -a -d "${CT_SRC_DIR}" ]; then
   213         CT_DoForceRmdir "${CT_SRC_DIR}"
   214     fi
   215     if [ -d "${CT_INSTALL_DIR}" ]; then
   216         CT_DoForceRmdir "${CT_INSTALL_DIR}"
   217     fi
   218     # In case we start anew, get rid of the previously saved state directory
   219     if [ -d "${CT_STATE_DIR}" ]; then
   220         CT_DoForceRmdir "${CT_STATE_DIR}"
   221     fi
   222 fi
   223 
   224 # Create the directories we'll use, even if restarting: it does no harm to
   225 # create already existent directories, and CT_BUILD_DIR needs to be created
   226 # anyway
   227 CT_DoExecLog ALL mkdir -p "${CT_TARBALLS_DIR}"
   228 CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   229 CT_DoExecLog ALL mkdir -p "${CT_BUILD_DIR}"
   230 CT_DoExecLog ALL mkdir -p "${CT_CONFIG_DIR}"
   231 CT_DoExecLog ALL mkdir -p "${CT_INSTALL_DIR}"
   232 CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}"
   233 if [ -z "${CT_CANADIAN}" ]; then
   234     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_STATIC_PREFIX_DIR}"
   235     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_SHARED_PREFIX_DIR}"
   236 fi
   237 
   238 # Only create the state dir if asked for a restartable build
   239 [ -n "${CT_DEBUG_CT_SAVE_STEPS}" ] && CT_DoExecLog ALL mkdir -p "${CT_STATE_DIR}"
   240 
   241 # Check install file system case-sensitiveness
   242 CT_DoExecLog DEBUG touch "${CT_PREFIX_DIR}/foo"
   243 CT_TestAndAbort "Your file system in '${CT_PREFIX_DIR}' is *not* case-sensitive!" -f "${CT_PREFIX_DIR}/FOO"
   244 CT_DoExecLog DEBUG rm -f "${CT_PREFIX_DIR}/foo"
   245 
   246 # Kludge: CT_INSTALL_DIR and CT_PREFIX_DIR might have grown read-only if
   247 # the previous build was successful. To be able to move the logfile there,
   248 # switch them back to read/write
   249 CT_DoExecLog ALL chmod -R u+w "${CT_INSTALL_DIR}" "${CT_PREFIX_DIR}"
   250 
   251 # Redirect log to the actual log file now we can
   252 # It's quite understandable that the log file will be installed in the install
   253 # directory, so we must first ensure it exists and is writeable (above) before
   254 # we can log there
   255 exec >/dev/null
   256 case "${CT_LOG_TO_FILE}" in
   257     y)  CT_LOG_FILE="${CT_PREFIX_DIR}/build.log"
   258         cat "${tmp_log_file}" >>"${CT_LOG_FILE}"
   259         rm -f "${tmp_log_file}"
   260         exec >>"${CT_LOG_FILE}"
   261         ;;
   262     *)  rm -f "${tmp_log_file}"
   263         ;;
   264 esac
   265 
   266 # Setting up the rest of the environment only if not restarting
   267 if [ -z "${CT_RESTART}" ]; then
   268     # Arrange paths depending on wether we use sys-root or not.
   269     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   270         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/sys-root"
   271         CT_DEBUGROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/debug-root"
   272         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/usr/include"
   273         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   274         CC_CORE_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   275         CC_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   276         LIBC_SYSROOT_ARG=""
   277         # glibc's prefix must be exactly /usr, else --with-sysroot'd gcc will get
   278         # confused when $sysroot/usr/include is not present.
   279         # Note: --prefix=/usr is magic!
   280         # See http://www.gnu.org/software/libc/FAQ.html#s-2.2
   281     else
   282         # plain old way. All libraries in prefix/target/lib
   283         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}"
   284         CT_DEBUGROOT_DIR="${CT_SYSROOT_DIR}"
   285         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/include"
   286         # hack!  Always use --with-sysroot for binutils.
   287         # binutils 2.14 and later obey it, older binutils ignore it.
   288         # Lets you build a working 32->64 bit cross gcc
   289         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   290         # Use --with-headers, else final gcc will define disable_glibc while
   291         # building libgcc, and you'll have no profiling
   292         CC_CORE_SYSROOT_ARG="--without-headers"
   293         CC_SYSROOT_ARG="--with-headers=${CT_HEADERS_DIR}"
   294         LIBC_SYSROOT_ARG="prefix="
   295     fi
   296     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}"
   297     CT_DoExecLog ALL mkdir -p "${CT_DEBUGROOT_DIR}"
   298 
   299     # Prepare the 'lib' directories in sysroot, else the ../lib64 hack used by
   300     # 32 -> 64 bit crosscompilers won't work, and build of final gcc will fail
   301     # with: "ld: cannot open crti.o: No such file or directory"
   302     # Also prepare the lib directory in the install dir, else some 64 bit archs
   303     # won't build
   304     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/lib"
   305     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/lib"
   306     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
   307 
   308     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   309       # Prevent gcc from installing its libraries outside of the sys-root
   310       CT_DoExecLog ALL ln -sf "./${CT_SYSROOT_DIR_PREFIX}/sys-root/lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib"
   311     fi
   312 
   313     # Now, in case we're 64 bits, just have lib64/ be a symlink to lib/
   314     # so as to have all libraries in the same directory (we can do that
   315     # because we are *not* multilib).
   316     if [ "${CT_ARCH_64}" = "y" ]; then
   317         CT_DoExecLog ALL ln -sf "lib" "${CT_PREFIX_DIR}/lib64"
   318         CT_DoExecLog ALL ln -sf "lib" "${CT_SYSROOT_DIR}/lib64"
   319         CT_DoExecLog ALL ln -sf "lib" "${CT_SYSROOT_DIR}/usr/lib64"
   320         CT_DoExecLog ALL ln -sf "lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib64"
   321     fi
   322 
   323     # Determine build system if not set by the user
   324     CT_Test "You did not specify the build system. That's OK, I can guess..." -z "${CT_BUILD}"
   325     case "${CT_BUILD}" in
   326         "") CT_BUILD=$("${CT_BUILD_PREFIX}gcc${CT_BUILD_SUFFIX}" -dumpmachine);;
   327     esac
   328 
   329     # Prepare mangling patterns to later modify BUILD and HOST (see below)
   330     case "${CT_TOOLCHAIN_TYPE}" in
   331         cross)
   332             # A cross-compiler runs on the same machine it is built on
   333             CT_HOST="${CT_BUILD}"
   334             build_mangle="build_"
   335             host_mangle="build_"
   336             target_mangle=""
   337             install_build_tools_for="BUILD HOST"
   338             ;;
   339         canadian)
   340             build_mangle="build_"
   341             host_mangle="host_"
   342             target_mangle=""
   343             install_build_tools_for="BUILD HOST TARGET"
   344             ;;
   345         *)  CT_Abort "No code for '${CT_TOOLCHAIN_TYPE}' toolchain type!"
   346             ;;
   347     esac
   348 
   349     # Save the real tuples to generate shell-wrappers to the real tools
   350     CT_REAL_BUILD="${CT_BUILD}"
   351     CT_REAL_HOST="${CT_HOST}"
   352     CT_REAL_TARGET="${CT_TARGET}"
   353 
   354     # Canonicalise CT_BUILD and CT_HOST
   355     # Not only will it give us full-qualified tuples, but it will also ensure
   356     # that they are valid tuples (in case of typo with user-provided tuples)
   357     # That's way better than trying to rewrite config.sub ourselves...
   358     # CT_TARGET is already made canonical in CT_DoBuildTargetTuple
   359     CT_BUILD=$(CT_DoConfigSub "${CT_BUILD}")
   360     CT_HOST=$(CT_DoConfigSub "${CT_HOST}")
   361 
   362     # Modify BUILD and HOST so that gcc always generate a cross-compiler
   363     # even if any of the build, host or target machines are the same.
   364     # NOTE: we'll have to mangle the (BUILD|HOST)->TARGET x-compiler to
   365     #       support canadain build, later...
   366     CT_BUILD="${CT_BUILD/-/-${build_mangle}}"
   367     CT_HOST="${CT_HOST/-/-${host_mangle}}"
   368     CT_TARGET="${CT_TARGET/-/-${target_mangle}}"
   369 
   370     # Now we have mangled our BUILD and HOST tuples, we must fake the new
   371     # cross-tools for those mangled tuples.
   372     CT_DoLog DEBUG "Making build system tools available"
   373     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/buildtools"
   374     for m in ${install_build_tools_for}; do
   375         r="CT_REAL_${m}"
   376         v="CT_${m}"
   377         p="CT_${m}_PREFIX"
   378         s="CT_${m}_SUFFIX"
   379         if [ -n "${!p}" ]; then
   380             t="${!p}"
   381         else
   382             t="${!r}-"
   383         fi
   384 
   385         for tool in ar as dlltool gcc g++ gcj gnatbind gnatmake ld nm objcopy objdump ranlib strip windres; do
   386             # First try with prefix + suffix
   387             # Then try with prefix only
   388             # Then try with suffix only, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   389             # Finally try with neither prefix nor suffix, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   390             # This is needed, because some tools have a prefix and
   391             # a suffix (eg. gcc), while others may have only one,
   392             # or even none (eg. binutils)
   393             where=$(CT_Which "${t}${tool}${!s}")
   394             [ -z "${where}" ] && where=$(CT_Which "${t}${tool}")
   395             if [    -z "${where}"                         \
   396                  -a \(    "${m}" = "BUILD"                \
   397                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   398                 where=$(CT_Which "${tool}${!s}")
   399             fi
   400             if [ -z "${where}"                            \
   401                  -a \(    "${m}" = "BUILD"                \
   402                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   403                 where=$(CT_Which "${tool}")
   404             fi
   405 
   406             # Not all tools are available for all platforms, but some are really,
   407             # bally needed
   408             if [ -n "${where}" ]; then
   409                 CT_DoLog DEBUG "  '${!v}-${tool}' -> '${where}'"
   410                 printf "#${BANG}${CT_SHELL}\nexec '${where}' \"\${@}\"\n" >"${CT_PREFIX_DIR}/buildtools/${!v}-${tool}"
   411                 CT_DoExecLog ALL chmod 700 "${CT_PREFIX_DIR}/buildtools/${!v}-${tool}"
   412             else
   413                 case "${tool}" in
   414                     # We'll at least need some of them...
   415                     ar|as|gcc|ld|nm|objcopy|objdump|ranlib)
   416                         CT_Abort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!"
   417                         ;;
   418                     # Some are conditionnally required
   419                     # Add them in alphabetical (C locale) ordering
   420                     gcj)
   421                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${CT_CC_LANG_JAVA}" = "y"
   422                         ;;
   423                     # If any other is missing, only warn at low level
   424                     *)
   425                         # It does not deserve a WARN level.
   426                         CT_DoLog DEBUG "  Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : not required."
   427                         ;;
   428                 esac
   429             fi
   430         done
   431     done
   432 
   433     # Carefully add paths in the order we want them:
   434     #  - first try in ${CT_PREFIX_DIR}/bin
   435     #  - then try in ${CT_CC_CORE_SHARED_PREFIX_DIR}/bin
   436     #  - then try in ${CT_CC_CORE_STATIC_PREFIX_DIR}/bin
   437     #  - fall back to searching user's PATH
   438     # Of course, neither cross-native nor canadian can run on BUILD,
   439     # so don't add those PATHs in this case...
   440     case "${CT_TOOLCHAIN_TYPE}" in
   441         cross)  export PATH="${CT_PREFIX_DIR}/buildtools:${CT_PREFIX_DIR}/bin:${CT_CC_CORE_SHARED_PREFIX_DIR}/bin:${CT_CC_CORE_STATIC_PREFIX_DIR}/bin:${PATH}";;
   442         canadian) export PATH="${CT_PREFIX_DIR}/buildtools:${PATH}";;
   443         *)  ;;
   444     esac
   445 
   446     # Some makeinfo versions are a pain in [put your most sensible body part here].
   447     # Go ahead with those, by creating a wrapper that keeps partial files, and that
   448     # never fails:
   449     CT_DoLog DEBUG "  'makeinfo' -> '$(CT_Which makeinfo)'"
   450     printf "#${BANG}${CT_SHELL}\n$(CT_Which makeinfo) --force \"\${@}\"\ntrue\n" >"${CT_PREFIX_DIR}/buildtools/makeinfo"
   451     CT_DoExecLog ALL chmod 700 "${CT_PREFIX_DIR}/buildtools/makeinfo"
   452 
   453     # Help gcc
   454     CT_CFLAGS_FOR_HOST=
   455     [ "${CT_USE_PIPES}" = "y" ] && CT_CFLAGS_FOR_HOST="${CT_CFLAGS_FOR_HOST} -pipe"
   456 
   457     # Override the configured jobs with what's been given on the command line
   458     [ -n "${CT_JOBS}" ] && CT_PARALLEL_JOBS="${CT_JOBS}"
   459 
   460     # Set the shell to be used by ./configure scripts and by Makefiles (those
   461     # that support it!).
   462     export CONFIG_SHELL="${CT_SHELL}"   # for ./configure
   463     export SHELL="${CT_SHELL}"          # for Makefiles
   464 
   465     # And help make go faster
   466     PARALLELMFLAGS=
   467     [ ${CT_PARALLEL_JOBS} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -j${CT_PARALLEL_JOBS}"
   468     [ ${CT_LOAD} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -l${CT_LOAD}"
   469     export PARALLELMFLAGS
   470 
   471     CT_DoLog EXTRA "Installing user-supplied crosstool-NG configuration"
   472     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/bin"
   473     CT_DoExecLog DEBUG install -m 0755 "${CT_LIB_DIR}/scripts/toolchain-config.in" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   474     CT_DoExecLog DEBUG sed -r -i -e 's,@@grep@@,"'"${grep}"'",;' "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   475     bzip2 -c -9 .config >>"${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   476 
   477     CT_DoStep EXTRA "Dumping internal crosstool-NG configuration"
   478     CT_DoLog EXTRA "Building a toolchain for:"
   479     CT_DoLog EXTRA "  build  = ${CT_REAL_BUILD}"
   480     CT_DoLog EXTRA "  host   = ${CT_REAL_HOST}"
   481     CT_DoLog EXTRA "  target = ${CT_TARGET}"
   482     set |grep -E '^CT_.+=' |sort |CT_DoLog DEBUG
   483     CT_EndStep
   484 fi
   485 
   486 if [ -z "${CT_RESTART}" ]; then
   487     CT_DoStep INFO "Retrieving needed toolchain components' tarballs"
   488     do_kernel_get
   489     do_gmp_get
   490     do_mpfr_get
   491     do_ppl_get
   492     do_cloog_get
   493     do_mpc_get
   494     do_binutils_get
   495     do_cc_get
   496     do_libc_get
   497     do_tools_get
   498     do_debug_get
   499     CT_EndStep
   500 
   501     if [ "${CT_ONLY_DOWNLOAD}" != "y" ]; then
   502         if [ "${CT_FORCE_EXTRACT}" = "y" ]; then
   503             CT_DoForceRmdir "${CT_SRC_DIR}"
   504             CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   505         fi
   506         CT_DoStep INFO "Extracting and patching toolchain components"
   507         do_kernel_extract
   508         do_gmp_extract
   509         do_mpfr_extract
   510         do_ppl_extract
   511         do_cloog_extract
   512         do_mpc_extract
   513         do_binutils_extract
   514         do_cc_extract
   515         do_libc_extract
   516         do_tools_extract
   517         do_debug_extract
   518         CT_EndStep
   519     fi
   520 fi
   521 
   522 # Now for the job by itself. Go have a coffee!
   523 if [ "${CT_ONLY_DOWNLOAD}" != "y" -a "${CT_ONLY_EXTRACT}" != "y" ]; then
   524     # Because of CT_RESTART, this becomes quite complex
   525     do_stop=0
   526     prev_step=
   527     [ -n "${CT_RESTART}" ] && do_it=0 || do_it=1
   528     # Aha! CT_STEPS comes from steps.mk!
   529     for step in ${CT_STEPS}; do
   530         if [ ${do_it} -eq 0 ]; then
   531             if [ "${CT_RESTART}" = "${step}" ]; then
   532                 CT_DoLoadState "${step}"
   533                 do_it=1
   534                 do_stop=0
   535             fi
   536         else
   537             CT_DoSaveState ${step}
   538             if [ ${do_stop} -eq 1 ]; then
   539                 CT_DoLog ERROR "Stopping just after step '${prev_step}', as requested."
   540                 exit 0
   541             fi
   542         fi
   543         if [ ${do_it} -eq 1 ]; then
   544             do_${step}
   545             if [ "${CT_STOP}" = "${step}" ]; then
   546                 do_stop=1
   547             fi
   548             if [ "${CT_DEBUG_PAUSE_STEPS}" = "y" ]; then
   549                 CT_DoPause "Step '${step}' finished"
   550             fi
   551         fi
   552         prev_step="${step}"
   553     done
   554 fi
   555 
   556 CT_DoEnd INFO
   557 
   558 # From now-on, it can become impossible to log any time, because
   559 # either we're compressing the log file, or it can become RO any
   560 # moment... Consign all ouptut to oblivion...
   561 CT_DoLog INFO "Finishing installation (may take a few seconds)..."
   562 exec >/dev/null 2>&1
   563 
   564 [ "${CT_LOG_FILE_COMPRESS}" = y ] && bzip2 -9 "${CT_LOG_FILE}"
   565 [ "${CT_INSTALL_DIR_RO}" = "y"  ] && chmod -R a-w "${CT_INSTALL_DIR}"
   566 
   567 trap - EXIT