scripts/crosstool-NG.sh.in
author Remy Bohmer <linux@bohmer.net>
Mon Apr 19 23:42:31 2010 +0200 (2010-04-19)
changeset 1927 aede9b9a2ffa
parent 1913 86bcbc42c6df
child 1928 0535b588679a
permissions -rw-r--r--
scripts: check g++ only for host

g++ is only needed when building additonal libs on the HOST,
so check wheter g++ is available for the HOST compiler only

Signed-off-by: Bart vdr. Meulen <bartvdrmeulen@gmail.com>
[Yann E. MORIN: fix space damage]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     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_TOOLS_OVERIDE_DIR="${CT_WORK_DIR}/tools"
    81 CT_DoLog DEBUG "Creating bin-overide for tools in '${CT_TOOLS_OVERIDE_DIR}'"
    82 CT_DoExecLog DEBUG mkdir -p "${CT_TOOLS_OVERIDE_DIR}/bin"
    83 cat "${CT_LIB_DIR}/paths.mk" |while read trash line; do
    84     tool="${line%%=*}"
    85     path="${line#*=}"
    86     CT_DoLog DEBUG "Creating script-override for '${tool}' -> '${path}'"
    87     printf "#${BANG}${CT_SHELL}\nexec '${path}' \"\${@}\"\n" >"${CT_TOOLS_OVERIDE_DIR}/bin/${tool}"
    88     CT_DoExecLog ALL chmod 700 "${CT_TOOLS_OVERIDE_DIR}/bin/${tool}"
    89 done
    90 export PATH="${CT_TOOLS_OVERIDE_DIR}/bin:${PATH}"
    91 
    92 # Start date. Can't be done until we know the locale
    93 # Also requires the bin-override tools
    94 CT_STAR_DATE=$(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 ${CT_STAR_DATE_HUMAN}"
    99 
   100 CT_DoStep DEBUG "Dumping user-supplied crosstool-NG configuration"
   101 CT_DoExecLog DEBUG grep -E '^(# |)CT_' .config
   102 CT_EndStep
   103 
   104 CT_DoLog DEBUG "Unsetting and unexporting MAKEFLAGS"
   105 unset MAKEFLAGS
   106 export MAKEFLAGS
   107 
   108 CT_DoLog INFO "Building environment variables"
   109 
   110 # Include sub-scripts instead of calling them: that way, we do not have to
   111 # export any variable, nor re-parse the configuration and functions files.
   112 . "${CT_LIB_DIR}/scripts/build/internals.sh"
   113 . "${CT_LIB_DIR}/scripts/build/arch/${CT_ARCH}.sh"
   114 . "${CT_LIB_DIR}/scripts/build/companion_tools.sh"
   115 . "${CT_LIB_DIR}/scripts/build/kernel/${CT_KERNEL}.sh"
   116 . "${CT_LIB_DIR}/scripts/build/companion_libs/gmp.sh"
   117 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpfr.sh"
   118 . "${CT_LIB_DIR}/scripts/build/companion_libs/ppl.sh"
   119 . "${CT_LIB_DIR}/scripts/build/companion_libs/cloog.sh"
   120 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpc.sh"
   121 . "${CT_LIB_DIR}/scripts/build/companion_libs/libelf.sh"
   122 . "${CT_LIB_DIR}/scripts/build/binutils/binutils.sh"
   123 . "${CT_LIB_DIR}/scripts/build/binutils/elf2flt.sh"
   124 . "${CT_LIB_DIR}/scripts/build/binutils/sstrip.sh"
   125 . "${CT_LIB_DIR}/scripts/build/libc/${CT_LIBC}.sh"
   126 . "${CT_LIB_DIR}/scripts/build/cc/${CT_CC}.sh"
   127 . "${CT_LIB_DIR}/scripts/build/debug.sh"
   128 
   129 # Target tuple: CT_TARGET needs a little love:
   130 CT_DoBuildTargetTuple
   131 
   132 # Kludge: If any of the configured options needs CT_TARGET,
   133 # then rescan the options file now:
   134 . .config
   135 
   136 # Sanity check some directories
   137 CT_TestAndAbort "'CT_PREFIX_DIR' is not set: where should I install?" -z "${CT_PREFIX_DIR}"
   138 
   139 # Second kludge: merge user-supplied target CFLAGS with architecture-provided
   140 # target CFLAGS. Do the same for LDFLAGS in case it happens in the future.
   141 # Put user-supplied flags at the end, so that they take precedence.
   142 CT_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_TARGET_CFLAGS}"
   143 CT_TARGET_LDFLAGS="${CT_ARCH_TARGET_LDFLAGS} ${CT_TARGET_LDFLAGS}"
   144 CT_CC_CORE_EXTRA_CONFIG="${CT_ARCH_CC_CORE_EXTRA_CONFIG} ${CT_CC_CORE_EXTRA_CONFIG}"
   145 CT_CC_EXTRA_CONFIG="${CT_ARCH_CC_EXTRA_CONFIG} ${CT_CC_EXTRA_CONFIG}"
   146 
   147 # Compute the working directories names
   148 CT_TARBALLS_DIR="${CT_WORK_DIR}/tarballs"
   149 CT_SRC_DIR="${CT_WORK_DIR}/src"
   150 CT_BUILD_DIR="${CT_WORK_DIR}/${CT_TARGET}/build"
   151 CT_STATE_DIR="${CT_WORK_DIR}/${CT_TARGET}/state"
   152 CT_CONFIG_DIR="${CT_BUILD_DIR}/configs"
   153 if [ "${CT_COMPLIBS_SHARED}" = "y" ]; then
   154     CT_COMPLIBS_DIR="${CT_PREFIX_DIR}"
   155 else
   156     CT_COMPLIBS_DIR="${CT_BUILD_DIR}/static"
   157 fi
   158 
   159 # Note: we'll always install the core compiler in its own directory, so as to
   160 # not mix the two builds: core and final.
   161 CT_CC_CORE_STATIC_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-static"
   162 CT_CC_CORE_SHARED_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-shared"
   163 
   164 # Set LD_LIBRARY_PATH to point to prefix/lib so we can find our own
   165 # libraries; add as first path, so we get hit first by the dynamic linker
   166 CT_SetLibPath "${CT_PREFIX_DIR}/lib" first
   167 
   168 # We must ensure that we can restart if asked for!
   169 if [ -n "${CT_RESTART}" -a ! -d "${CT_STATE_DIR}"  ]; then
   170     CT_DoLog ERROR "You asked to restart a non-restartable build"
   171     CT_DoLog ERROR "This happened because you didn't set CT_DEBUG_CT_SAVE_STEPS"
   172     CT_DoLog ERROR "in the config options for the previous build, or the state"
   173     CT_DoLog ERROR "directory for the previous build was deleted."
   174     CT_Abort "I will stop here to avoid any carnage"
   175 fi
   176 
   177 # If the local tarball directory does not exist, say so, and don't try to save there!
   178 if [    "${CT_SAVE_TARBALLS}" = "y"     \
   179      -a ! -d "${CT_LOCAL_TARBALLS_DIR}" ]; then
   180     CT_DoLog WARN "Directory '${CT_LOCAL_TARBALLS_DIR}' does not exist."
   181     CT_DoLog WARN "Will not save downloaded tarballs to local storage."
   182     CT_SAVE_TARBALLS=
   183 fi
   184 
   185 # Check now if we can write to the destination directory:
   186 if [ -d "${CT_INSTALL_DIR}" ]; then
   187     CT_TestAndAbort "Destination directory '${CT_INSTALL_DIR}' is not removable" ! -w $(dirname "${CT_INSTALL_DIR}")
   188 fi
   189 
   190 # Good, now grab a bit of informations on the system we're being run on,
   191 # just in case something goes awok, and it's not our fault:
   192 CT_SYS_USER=$(id -un)
   193 CT_SYS_HOSTNAME=$(hostname -f 2>/dev/null || true)
   194 # Hmmm. Some non-DHCP-enabled machines do not have an FQDN... Fall back to node name.
   195 CT_SYS_HOSTNAME="${CT_SYS_HOSTNAME:-$(uname -n)}"
   196 CT_SYS_KERNEL=$(uname -s)
   197 CT_SYS_REVISION=$(uname -r)
   198 # uname -o is a GNU Extension. Others lack '-o' --> use System name for OS name.
   199 CT_SYS_OS=$(uname -o || uname -s)
   200 CT_SYS_MACHINE=$(uname -m)
   201 CT_SYS_PROCESSOR=$(uname -p)
   202 CT_SYS_GCC=$(gcc -dumpversion)
   203 CT_SYS_TARGET=$(CT_DoConfigGuess)
   204 CT_TOOLCHAIN_ID="crosstool-${CT_VERSION} build ${CT_STAR_DATE_HUMAN} by ${CT_SYS_USER}@${CT_SYS_HOSTNAME}"
   205 
   206 CT_DoLog EXTRA "Preparing working directories"
   207 
   208 # Ah! The build directory shall be eradicated, even if we restart!
   209 if [ -d "${CT_BUILD_DIR}" ]; then
   210     CT_DoForceRmdir "${CT_BUILD_DIR}"
   211 fi
   212 
   213 # Don't eradicate directories if we need to restart
   214 if [ -z "${CT_RESTART}" ]; then
   215     # Get rid of pre-existing installed toolchain and previous build directories.
   216     # We need to do that _before_ we can safely log, because the log file will
   217     # most probably be in the toolchain directory.
   218     if [ "${CT_FORCE_DOWNLOAD}" = "y" -a -d "${CT_TARBALLS_DIR}" ]; then
   219         CT_DoForceRmdir "${CT_TARBALLS_DIR}"
   220     fi
   221     if [ "${CT_FORCE_EXTRACT}" = "y" -a -d "${CT_SRC_DIR}" ]; then
   222         CT_DoForceRmdir "${CT_SRC_DIR}"
   223     fi
   224     if [ -d "${CT_INSTALL_DIR}" ]; then
   225         CT_DoForceRmdir "${CT_INSTALL_DIR}"
   226     fi
   227     # In case we start anew, get rid of the previously saved state directory
   228     if [ -d "${CT_STATE_DIR}" ]; then
   229         CT_DoForceRmdir "${CT_STATE_DIR}"
   230     fi
   231 fi
   232 
   233 # Create the directories we'll use, even if restarting: it does no harm to
   234 # create already existent directories, and CT_BUILD_DIR needs to be created
   235 # anyway
   236 CT_DoExecLog ALL mkdir -p "${CT_TARBALLS_DIR}"
   237 CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   238 CT_DoExecLog ALL mkdir -p "${CT_BUILD_DIR}"
   239 CT_DoExecLog ALL mkdir -p "${CT_CONFIG_DIR}"
   240 CT_DoExecLog ALL mkdir -p "${CT_INSTALL_DIR}"
   241 CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}"
   242 CT_DoExecLog ALL mkdir -p "${CT_COMPLIBS_DIR}"
   243 if [ -z "${CT_CANADIAN}" ]; then
   244     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_STATIC_PREFIX_DIR}"
   245     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_SHARED_PREFIX_DIR}"
   246 fi
   247 
   248 # Only create the state dir if asked for a restartable build
   249 [ -n "${CT_DEBUG_CT_SAVE_STEPS}" ] && CT_DoExecLog ALL mkdir -p "${CT_STATE_DIR}"
   250 
   251 # Check install file system case-sensitiveness
   252 CT_DoExecLog DEBUG touch "${CT_PREFIX_DIR}/foo"
   253 CT_TestAndAbort "Your file system in '${CT_PREFIX_DIR}' is *not* case-sensitive!" -f "${CT_PREFIX_DIR}/FOO"
   254 CT_DoExecLog DEBUG rm -f "${CT_PREFIX_DIR}/foo"
   255 
   256 # Kludge: CT_INSTALL_DIR and CT_PREFIX_DIR might have grown read-only if
   257 # the previous build was successful. To be able to move the logfile there,
   258 # switch them back to read/write
   259 CT_DoExecLog ALL chmod -R u+w "${CT_INSTALL_DIR}" "${CT_PREFIX_DIR}"
   260 
   261 # Redirect log to the actual log file now we can
   262 # It's quite understandable that the log file will be installed in the install
   263 # directory, so we must first ensure it exists and is writeable (above) before
   264 # we can log there
   265 exec >/dev/null
   266 case "${CT_LOG_TO_FILE}" in
   267     y)  CT_LOG_FILE="${CT_PREFIX_DIR}/build.log"
   268         cat "${tmp_log_file}" >>"${CT_LOG_FILE}"
   269         rm -f "${tmp_log_file}"
   270         exec >>"${CT_LOG_FILE}"
   271         ;;
   272     *)  rm -f "${tmp_log_file}"
   273         ;;
   274 esac
   275 
   276 # Setting up the rest of the environment only if not restarting
   277 if [ -z "${CT_RESTART}" ]; then
   278     # Arrange paths depending on wether we use sys-root or not.
   279     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   280         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/sys-root"
   281         CT_DEBUGROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/debug-root"
   282         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/usr/include"
   283         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   284         CC_CORE_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   285         CC_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   286         LIBC_SYSROOT_ARG=""
   287         # glibc's prefix must be exactly /usr, else --with-sysroot'd gcc will get
   288         # confused when $sysroot/usr/include is not present.
   289         # Note: --prefix=/usr is magic!
   290         # See http://www.gnu.org/software/libc/FAQ.html#s-2.2
   291     else
   292         # plain old way. All libraries in prefix/target/lib
   293         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}"
   294         CT_DEBUGROOT_DIR="${CT_SYSROOT_DIR}"
   295         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/include"
   296         # hack!  Always use --with-sysroot for binutils.
   297         # binutils 2.14 and later obey it, older binutils ignore it.
   298         # Lets you build a working 32->64 bit cross gcc
   299         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   300         # Use --with-headers, else final gcc will define disable_glibc while
   301         # building libgcc, and you'll have no profiling
   302         CC_CORE_SYSROOT_ARG="--without-headers"
   303         CC_SYSROOT_ARG="--with-headers=${CT_HEADERS_DIR}"
   304         LIBC_SYSROOT_ARG="prefix="
   305     fi
   306     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}"
   307     CT_DoExecLog ALL mkdir -p "${CT_DEBUGROOT_DIR}"
   308 
   309     # Prepare the 'lib' directories in sysroot, else the ../lib64 hack used by
   310     # 32 -> 64 bit crosscompilers won't work, and build of final gcc will fail
   311     # with: "ld: cannot open crti.o: No such file or directory"
   312     # Also prepare the lib directory in the install dir, else some 64 bit archs
   313     # won't build
   314     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/lib"
   315     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/lib"
   316     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
   317 
   318     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   319       # Prevent gcc from installing its libraries outside of the sys-root
   320       CT_DoExecLog ALL ln -sf "./${CT_SYSROOT_DIR_PREFIX}/sys-root/lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib"
   321     fi
   322 
   323     # Now, in case we're 64 bits, just have lib64/ be a symlink to lib/
   324     # so as to have all libraries in the same directory (we can do that
   325     # because we are *not* multilib).
   326     if [ "${CT_ARCH_64}" = "y" ]; then
   327         CT_DoExecLog ALL ln -sf "lib" "${CT_PREFIX_DIR}/lib64"
   328         CT_DoExecLog ALL ln -sf "lib" "${CT_SYSROOT_DIR}/lib64"
   329         CT_DoExecLog ALL ln -sf "lib" "${CT_SYSROOT_DIR}/usr/lib64"
   330         CT_DoExecLog ALL ln -sf "lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib64"
   331     fi
   332 
   333     # Determine build system if not set by the user
   334     case "${CT_BUILD}" in
   335         "") CT_BUILD=$("${CT_BUILD_PREFIX}gcc${CT_BUILD_SUFFIX}" -dumpmachine);;
   336     esac
   337 
   338     # Prepare mangling patterns to later modify BUILD and HOST (see below)
   339     case "${CT_TOOLCHAIN_TYPE}" in
   340         cross)
   341             # A cross-compiler runs on the same machine it is built on
   342             CT_HOST="${CT_BUILD}"
   343             build_mangle="build_"
   344             host_mangle="build_"
   345             target_mangle=""
   346             install_build_tools_for="BUILD HOST"
   347             ;;
   348         canadian)
   349             build_mangle="build_"
   350             host_mangle="host_"
   351             target_mangle=""
   352             install_build_tools_for="BUILD HOST TARGET"
   353             ;;
   354         *)  CT_Abort "No code for '${CT_TOOLCHAIN_TYPE}' toolchain type!"
   355             ;;
   356     esac
   357 
   358     # Save the real tuples to generate shell-wrappers to the real tools
   359     CT_REAL_BUILD="${CT_BUILD}"
   360     CT_REAL_HOST="${CT_HOST}"
   361     CT_REAL_TARGET="${CT_TARGET}"
   362 
   363     # Canonicalise CT_BUILD and CT_HOST
   364     # Not only will it give us full-qualified tuples, but it will also ensure
   365     # that they are valid tuples (in case of typo with user-provided tuples)
   366     # That's way better than trying to rewrite config.sub ourselves...
   367     # CT_TARGET is already made canonical in CT_DoBuildTargetTuple
   368     CT_BUILD=$(CT_DoConfigSub "${CT_BUILD}")
   369     CT_HOST=$(CT_DoConfigSub "${CT_HOST}")
   370 
   371     # Modify BUILD and HOST so that gcc always generate a cross-compiler
   372     # even if any of the build, host or target machines are the same.
   373     # NOTE: we'll have to mangle the (BUILD|HOST)->TARGET x-compiler to
   374     #       support canadain build, later...
   375     CT_BUILD="${CT_BUILD/-/-${build_mangle}}"
   376     CT_HOST="${CT_HOST/-/-${host_mangle}}"
   377     CT_TARGET="${CT_TARGET/-/-${target_mangle}}"
   378 
   379     # Now we have mangled our BUILD and HOST tuples, we must fake the new
   380     # cross-tools for those mangled tuples.
   381     CT_DoLog DEBUG "Making build system tools available"
   382     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/buildtools"
   383     for m in ${install_build_tools_for}; do
   384         r="CT_REAL_${m}"
   385         v="CT_${m}"
   386         p="CT_${m}_PREFIX"
   387         s="CT_${m}_SUFFIX"
   388         if [ -n "${!p}" ]; then
   389             t="${!p}"
   390         else
   391             t="${!r}-"
   392         fi
   393 
   394         for tool in ar as dlltool gcc g++ gcj gnatbind gnatmake ld nm objcopy objdump ranlib strip windres; do
   395             # First try with prefix + suffix
   396             # Then try with prefix only
   397             # Then try with suffix only, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   398             # Finally try with neither prefix nor suffix, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   399             # This is needed, because some tools have a prefix and
   400             # a suffix (eg. gcc), while others may have only one,
   401             # or even none (eg. binutils)
   402             where=$(CT_Which "${t}${tool}${!s}")
   403             [ -z "${where}" ] && where=$(CT_Which "${t}${tool}")
   404             if [    -z "${where}"                         \
   405                  -a \(    "${m}" = "BUILD"                \
   406                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   407                 where=$(CT_Which "${tool}${!s}")
   408             fi
   409             if [ -z "${where}"                            \
   410                  -a \(    "${m}" = "BUILD"                \
   411                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   412                 where=$(CT_Which "${tool}")
   413             fi
   414 
   415             # Not all tools are available for all platforms, but some are really,
   416             # bally needed
   417             if [ -n "${where}" ]; then
   418                 CT_DoLog DEBUG "  '${!v}-${tool}' -> '${where}'"
   419                 printf "#${BANG}${CT_SHELL}\nexec '${where}' \"\${@}\"\n" >"${CT_PREFIX_DIR}/buildtools/${!v}-${tool}"
   420                 CT_DoExecLog ALL chmod 700 "${CT_PREFIX_DIR}/buildtools/${!v}-${tool}"
   421             else
   422                 case "${tool}" in
   423                     # We'll at least need some of them...
   424                     ar|as|gcc|ld|nm|objcopy|objdump|ranlib)
   425                         CT_Abort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!"
   426                         ;;
   427                     # Some are conditionnally required
   428                     # Add them in alphabetical (C locale) ordering
   429                     g++)
   430                         # g++ (needed for companion lib), only needed for HOST
   431                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${m}" = "HOST"
   432                         ;;
   433                     gcj)
   434                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${CT_CC_LANG_JAVA}" = "y"
   435                         ;;
   436                     # If any other is missing, only warn at low level
   437                     *)
   438                         # It does not deserve a WARN level.
   439                         CT_DoLog DEBUG "  Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : not required."
   440                         ;;
   441                 esac
   442             fi
   443         done
   444     done
   445 
   446     # Carefully add paths in the order we want them:
   447     #  - first try in ${CT_PREFIX_DIR}/bin
   448     #  - then try in ${CT_CC_CORE_SHARED_PREFIX_DIR}/bin
   449     #  - then try in ${CT_CC_CORE_STATIC_PREFIX_DIR}/bin
   450     #  - fall back to searching user's PATH
   451     # Of course, neither cross-native nor canadian can run on BUILD,
   452     # so don't add those PATHs in this case...
   453     case "${CT_TOOLCHAIN_TYPE}" in
   454         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:${PATH}";;
   455         canadian) export PATH="${CT_PREFIX_DIR}/buildtools:${PATH}";;
   456         *)  ;;
   457     esac
   458 
   459     # Some makeinfo versions are a pain in [put your most sensible body part here].
   460     # Go ahead with those, by creating a wrapper that keeps partial files, and that
   461     # never fails:
   462     CT_DoLog DEBUG "  'makeinfo' -> '$(CT_Which makeinfo)'"
   463     printf "#${BANG}${CT_SHELL}\n$(CT_Which makeinfo) --force \"\${@}\"\ntrue\n" >"${CT_PREFIX_DIR}/buildtools/makeinfo"
   464     CT_DoExecLog ALL chmod 700 "${CT_PREFIX_DIR}/buildtools/makeinfo"
   465 
   466     # Help gcc
   467     CT_CFLAGS_FOR_HOST=
   468     [ "${CT_USE_PIPES}" = "y" ] && CT_CFLAGS_FOR_HOST="${CT_CFLAGS_FOR_HOST} -pipe"
   469 
   470     # Override the configured jobs with what's been given on the command line
   471     [ -n "${CT_JOBS}" ] && CT_PARALLEL_JOBS="${CT_JOBS}"
   472 
   473     # Set the shell to be used by ./configure scripts and by Makefiles (those
   474     # that support it!).
   475     export CONFIG_SHELL="${CT_SHELL}"   # for ./configure
   476     export SHELL="${CT_SHELL}"          # for Makefiles
   477 
   478     # And help make go faster
   479     PARALLELMFLAGS=
   480     [ ${CT_PARALLEL_JOBS} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -j${CT_PARALLEL_JOBS}"
   481     [ ${CT_LOAD} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -l${CT_LOAD}"
   482     export PARALLELMFLAGS
   483 
   484     CT_DoLog EXTRA "Installing user-supplied crosstool-NG configuration"
   485     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/bin"
   486     CT_DoExecLog DEBUG install -m 0755 "${CT_LIB_DIR}/scripts/toolchain-config.in" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   487     CT_DoExecLog DEBUG sed -i -e 's,@@grep@@,"'"${grep}"'",;' "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   488     bzip2 -c -9 .config >>"${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   489 
   490     CT_DoStep EXTRA "Dumping internal crosstool-NG configuration"
   491     CT_DoLog EXTRA "Building a toolchain for:"
   492     CT_DoLog EXTRA "  build  = ${CT_REAL_BUILD}"
   493     CT_DoLog EXTRA "  host   = ${CT_REAL_HOST}"
   494     CT_DoLog EXTRA "  target = ${CT_TARGET}"
   495     set |grep -E '^CT_.+=' |sort |CT_DoLog DEBUG
   496     CT_DoLog DEBUG "Other environment:"
   497     printenv |grep -v -E '^CT_.+=' |CT_DoLog DEBUG
   498     CT_EndStep
   499 fi
   500 
   501 if [ -z "${CT_RESTART}" ]; then
   502     if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then
   503         CT_DoLog INFO "Downloading forbidden by configuration, skipping downloads"
   504     else
   505         CT_DoStep INFO "Retrieving needed toolchain components' tarballs"
   506         do_companion_tools_get
   507         do_kernel_get
   508         do_gmp_get
   509         do_mpfr_get
   510         do_ppl_get
   511         do_cloog_get
   512         do_mpc_get
   513         do_libelf_get
   514         do_binutils_get
   515         do_elf2flt_get
   516         do_sstrip_get
   517         do_cc_get
   518         do_libc_get
   519         do_debug_get
   520         CT_EndStep
   521     fi
   522 
   523     if [ "${CT_ONLY_DOWNLOAD}" != "y" ]; then
   524         if [ "${CT_FORCE_EXTRACT}" = "y" ]; then
   525             CT_DoForceRmdir "${CT_SRC_DIR}"
   526             CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   527         fi
   528 
   529         if [ "${CT_COMP_TOOLS}" = "y" ]; then
   530           CT_DoStep INFO "Extracting, patching and installing companion tools"
   531           do_companion_tools_extract
   532           do_companion_tools
   533           CT_EndStep
   534         fi
   535 
   536         CT_DoStep INFO "Extracting and patching toolchain components"
   537         do_kernel_extract
   538         do_gmp_extract
   539         do_mpfr_extract
   540         do_ppl_extract
   541         do_cloog_extract
   542         do_mpc_extract
   543         do_libelf_extract
   544         do_binutils_extract
   545         do_elf2flt_extract
   546         do_sstrip_extract
   547         do_cc_extract
   548         do_libc_extract
   549         do_debug_extract
   550         CT_EndStep
   551     fi
   552 fi
   553 
   554 # Now for the job by itself. Go have a coffee!
   555 if [ "${CT_ONLY_DOWNLOAD}" != "y" -a "${CT_ONLY_EXTRACT}" != "y" ]; then
   556     # Because of CT_RESTART, this becomes quite complex
   557     do_stop=0
   558     prev_step=
   559     [ -n "${CT_RESTART}" ] && do_it=0 || do_it=1
   560     # Aha! CT_STEPS comes from steps.mk!
   561     for step in ${CT_STEPS}; do
   562         if [ ${do_it} -eq 0 ]; then
   563             if [ "${CT_RESTART}" = "${step}" ]; then
   564                 CT_DoLoadState "${step}"
   565                 do_it=1
   566                 do_stop=0
   567             fi
   568         else
   569             CT_DoSaveState ${step}
   570             if [ ${do_stop} -eq 1 ]; then
   571                 CT_DoLog ERROR "Stopping just after step '${prev_step}', as requested."
   572                 exit 0
   573             fi
   574         fi
   575         if [ ${do_it} -eq 1 ]; then
   576             do_${step}
   577             if [ "${CT_STOP}" = "${step}" ]; then
   578                 do_stop=1
   579             fi
   580             if [ "${CT_DEBUG_PAUSE_STEPS}" = "y" ]; then
   581                 CT_DoPause "Step '${step}' finished"
   582             fi
   583         fi
   584         prev_step="${step}"
   585     done
   586 fi
   587 
   588 CT_DoEnd INFO
   589 
   590 # From now-on, it can become impossible to log any time, because
   591 # either we're compressing the log file, or it can become RO any
   592 # moment... Consign all ouptut to oblivion...
   593 CT_DoLog INFO "Finishing installation (may take a few seconds)..."
   594 exec >/dev/null 2>&1
   595 
   596 [ "${CT_LOG_FILE_COMPRESS}" = y ] && bzip2 -9 "${CT_LOG_FILE}"
   597 [ "${CT_INSTALL_DIR_RO}" = "y"  ] && chmod -R a-w "${CT_INSTALL_DIR}"
   598 
   599 trap - EXIT