scripts/crosstool-NG.sh.in
author Johannes Stezenbach <js@sig21.net>
Thu Jul 29 19:30:37 2010 +0200 (2010-07-29)
branch1.7
changeset 2047 ace1d90c9b15
parent 1954 acae437fddcc
permissions -rw-r--r--
scripts: remove . from $PATH

Add CT_SanitizePath function which removes entries referring to ., /tmp
and non-existing directories from $PATH, and call it early in the
build script.

If . is in PATH, gcc-4.4.4 build breaks:

[ALL ] checking what assembler to use...
/tmp/build/targets/arm-unknown-linux-uclibcgnueabi/build/gcc-core-static/arm-unknown-linux-uclibcgnueabi/bin/as
...
[ALL ] config.status: creating as

i.e. "as" is supposed to be the arm-unknown-linux-uclibcgnueabi cross assembler,
but config.status creates a local "as" script which is calling the
host assembler.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
[Yann E. MORIN: style fixes + explanations]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 20dd8cef1c8adff0aa3e78ae6d7acfbc45ed5a83)
     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 # remove . from PATH since it can cause gcc build failures
    32 CT_SanitizePath
    33 
    34 # Some sanity checks in the environment and needed tools
    35 CT_DoLog INFO "Performing some trivial sanity checks"
    36 CT_TestAndAbort "Don't set LD_LIBRARY_PATH. It screws up the build." -n "${LD_LIBRARY_PATH}"
    37 CT_TestAndAbort "Don't set CFLAGS. It screws up the build." -n "${CFLAGS}"
    38 CT_TestAndAbort "Don't set CXXFLAGS. It screws up the build." -n "${CXXFLAGS}"
    39 CT_Test "GREP_OPTIONS screws up the build. Resetting." -n "${GREP_OPTIONS}"
    40 export GREP_OPTIONS=
    41 
    42 # Some sanity checks on paths content
    43 for d in            \
    44     LOCAL_TARBALLS  \
    45     WORK            \
    46     PREFIX          \
    47     INSTALL         \
    48     ; do
    49         eval dir="\${CT_${d}_DIR}"
    50         case "${dir}" in
    51             *" "*)
    52                 CT_Abort "'CT_${d}_DIR'='${dir}' contains a space in it.\nDon't use spaces in paths, it breaks things."
    53                 ;;
    54         esac
    55 done
    56 
    57 # Where will we work?
    58 CT_WORK_DIR="${CT_WORK_DIR:-${CT_TOP_DIR}/targets}"
    59 CT_DoExecLog ALL mkdir -p "${CT_WORK_DIR}"
    60 
    61 # Check build file system case-sensitiveness
    62 CT_DoExecLog DEBUG touch "${CT_WORK_DIR}/foo"
    63 CT_TestAndAbort "Your file system in '${CT_WORK_DIR}' is *not* case-sensitive!" -f "${CT_WORK_DIR}/FOO"
    64 CT_DoExecLog DEBUG rm -f "${CT_WORK_DIR}/foo"
    65 
    66 # What's our shell?
    67 # Will be plain /bin/sh on most systems, except if we have /bin/ash and we
    68 # _explictly_ required using it
    69 case "${CT_CONFIG_SHELL}" in
    70     sh)     CT_SHELL="/bin/sh";;
    71     ash)    CT_SHELL="/bin/ash";;
    72     bash)   CT_SHELL="${BASH}";;
    73     custom) CT_SHELL="${CT_CONFIG_SHELL_CUSTOM_PATH}";;
    74 esac
    75 
    76 # Check the user is using an existing SHELL to be used by ./configure and Makefiles
    77 CT_TestOrAbort "The CONFIG_SHELL '${CT_CONFIG_SHELL}' (${CT_SHELL}) is not valid" -f "${CT_SHELL}" -a -x "${CT_SHELL}"
    78 
    79 # Create the bin-overide early
    80 # Contains symlinks to the tools found by ./configure
    81 # Note: CT_DoLog and CT_DoExecLog do not use any of those tool, so
    82 # they can be safely used
    83 CT_TOOLS_OVERIDE_DIR="${CT_WORK_DIR}/tools"
    84 CT_DoLog DEBUG "Creating bin-overide for tools in '${CT_TOOLS_OVERIDE_DIR}'"
    85 CT_DoExecLog DEBUG mkdir -p "${CT_TOOLS_OVERIDE_DIR}/bin"
    86 cat "${CT_LIB_DIR}/paths.mk" |while read trash line; do
    87     tool="${line%%=*}"
    88     path="${line#*=}"
    89     CT_DoLog DEBUG "Creating script-override for '${tool}' -> '${path}'"
    90     printf "#${BANG}${CT_SHELL}\nexec '${path}' \"\${@}\"\n" >"${CT_TOOLS_OVERIDE_DIR}/bin/${tool}"
    91     CT_DoExecLog ALL chmod 700 "${CT_TOOLS_OVERIDE_DIR}/bin/${tool}"
    92 done
    93 export PATH="${CT_TOOLS_OVERIDE_DIR}/bin:${PATH}"
    94 
    95 # Start date. Can't be done until we know the locale
    96 # Also requires the bin-override tools
    97 CT_STAR_DATE=$(CT_DoDate +%s%N)
    98 CT_STAR_DATE_HUMAN=$(CT_DoDate +%Y%m%d.%H%M%S)
    99 
   100 # Log real begining of build, now
   101 CT_DoLog INFO "Build started ${CT_STAR_DATE_HUMAN}"
   102 
   103 CT_DoStep DEBUG "Dumping user-supplied crosstool-NG configuration"
   104 CT_DoExecLog DEBUG grep -E '^(# |)CT_' .config
   105 CT_EndStep
   106 
   107 CT_DoLog DEBUG "Unsetting and unexporting MAKEFLAGS"
   108 unset MAKEFLAGS
   109 export MAKEFLAGS
   110 
   111 CT_DoLog INFO "Building environment variables"
   112 
   113 # Include sub-scripts instead of calling them: that way, we do not have to
   114 # export any variable, nor re-parse the configuration and functions files.
   115 . "${CT_LIB_DIR}/scripts/build/internals.sh"
   116 . "${CT_LIB_DIR}/scripts/build/arch/${CT_ARCH}.sh"
   117 . "${CT_LIB_DIR}/scripts/build/companion_tools.sh"
   118 . "${CT_LIB_DIR}/scripts/build/kernel/${CT_KERNEL}.sh"
   119 . "${CT_LIB_DIR}/scripts/build/companion_libs/gmp.sh"
   120 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpfr.sh"
   121 . "${CT_LIB_DIR}/scripts/build/companion_libs/ppl.sh"
   122 . "${CT_LIB_DIR}/scripts/build/companion_libs/cloog.sh"
   123 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpc.sh"
   124 . "${CT_LIB_DIR}/scripts/build/companion_libs/libelf.sh"
   125 . "${CT_LIB_DIR}/scripts/build/binutils/binutils.sh"
   126 . "${CT_LIB_DIR}/scripts/build/binutils/elf2flt.sh"
   127 . "${CT_LIB_DIR}/scripts/build/binutils/sstrip.sh"
   128 . "${CT_LIB_DIR}/scripts/build/libc/${CT_LIBC}.sh"
   129 . "${CT_LIB_DIR}/scripts/build/cc/${CT_CC}.sh"
   130 . "${CT_LIB_DIR}/scripts/build/debug.sh"
   131 
   132 # Target tuple: CT_TARGET needs a little love:
   133 CT_DoBuildTargetTuple
   134 
   135 # Kludge: If any of the configured options needs CT_TARGET,
   136 # then rescan the options file now:
   137 . .config
   138 
   139 # Sanity check some directories
   140 CT_TestAndAbort "'CT_PREFIX_DIR' is not set: where should I install?" -z "${CT_PREFIX_DIR}"
   141 
   142 # Second kludge: merge user-supplied target CFLAGS with architecture-provided
   143 # target CFLAGS. Do the same for LDFLAGS in case it happens in the future.
   144 # Put user-supplied flags at the end, so that they take precedence.
   145 CT_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_TARGET_CFLAGS}"
   146 CT_TARGET_LDFLAGS="${CT_ARCH_TARGET_LDFLAGS} ${CT_TARGET_LDFLAGS}"
   147 CT_CC_CORE_EXTRA_CONFIG="${CT_ARCH_CC_CORE_EXTRA_CONFIG} ${CT_CC_CORE_EXTRA_CONFIG}"
   148 CT_CC_EXTRA_CONFIG="${CT_ARCH_CC_EXTRA_CONFIG} ${CT_CC_EXTRA_CONFIG}"
   149 
   150 # Compute the working directories names
   151 CT_TARBALLS_DIR="${CT_WORK_DIR}/tarballs"
   152 CT_SRC_DIR="${CT_WORK_DIR}/src"
   153 CT_BUILD_DIR="${CT_WORK_DIR}/${CT_TARGET}/build"
   154 CT_STATE_DIR="${CT_WORK_DIR}/${CT_TARGET}/state"
   155 CT_CONFIG_DIR="${CT_BUILD_DIR}/configs"
   156 if [ "${CT_COMPLIBS_SHARED}" = "y" ]; then
   157     CT_COMPLIBS_DIR="${CT_PREFIX_DIR}"
   158     # Set LD_LIBRARY_PATH to point to prefix/lib so we can find our own
   159     # libraries; add as first path, so we get hit first by the dynamic linker
   160     CT_SetLibPath "${CT_COMPLIBS_DIR}/lib" first
   161 else
   162     CT_COMPLIBS_DIR="${CT_BUILD_DIR}/static"
   163 fi
   164 
   165 # Note: we'll always install the core compiler in its own directory, so as to
   166 # not mix the two builds: core and final.
   167 CT_CC_CORE_STATIC_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-static"
   168 CT_CC_CORE_SHARED_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-shared"
   169 
   170 # We must ensure that we can restart if asked for!
   171 if [ -n "${CT_RESTART}" -a ! -d "${CT_STATE_DIR}"  ]; then
   172     CT_DoLog ERROR "You asked to restart a non-restartable build"
   173     CT_DoLog ERROR "This happened because you didn't set CT_DEBUG_CT_SAVE_STEPS"
   174     CT_DoLog ERROR "in the config options for the previous build, or the state"
   175     CT_DoLog ERROR "directory for the previous build was deleted."
   176     CT_Abort "I will stop here to avoid any carnage"
   177 fi
   178 
   179 # If the local tarball directory does not exist, say so, and don't try to save there!
   180 if [    "${CT_SAVE_TARBALLS}" = "y"     \
   181      -a ! -d "${CT_LOCAL_TARBALLS_DIR}" ]; then
   182     CT_DoLog WARN "Directory '${CT_LOCAL_TARBALLS_DIR}' does not exist."
   183     CT_DoLog WARN "Will not save downloaded tarballs to local storage."
   184     CT_SAVE_TARBALLS=
   185 fi
   186 
   187 # Check now if we can write to the destination directory:
   188 if [ -d "${CT_INSTALL_DIR}" ]; then
   189     CT_TestAndAbort "Destination directory '${CT_INSTALL_DIR}' is not removable" ! -w $(dirname "${CT_INSTALL_DIR}")
   190 fi
   191 
   192 # Good, now grab a bit of informations on the system we're being run on,
   193 # just in case something goes awok, and it's not our fault:
   194 CT_SYS_USER=$(id -un)
   195 CT_SYS_HOSTNAME=$(hostname -f 2>/dev/null || true)
   196 # Hmmm. Some non-DHCP-enabled machines do not have an FQDN... Fall back to node name.
   197 CT_SYS_HOSTNAME="${CT_SYS_HOSTNAME:-$(uname -n)}"
   198 CT_SYS_KERNEL=$(uname -s)
   199 CT_SYS_REVISION=$(uname -r)
   200 CT_SYS_OS=$(uname -s)
   201 CT_SYS_MACHINE=$(uname -m)
   202 CT_SYS_PROCESSOR=$(uname -p)
   203 CT_SYS_GCC=$(gcc -dumpversion)
   204 CT_SYS_TARGET=$(CT_DoConfigGuess)
   205 CT_TOOLCHAIN_ID="crosstool-${CT_VERSION} build ${CT_STAR_DATE_HUMAN} by ${CT_SYS_USER}@${CT_SYS_HOSTNAME}"
   206 
   207 CT_DoLog EXTRA "Preparing working directories"
   208 
   209 # Ah! The build directory shall be eradicated, even if we restart!
   210 if [ -d "${CT_BUILD_DIR}" ]; then
   211     CT_DoForceRmdir "${CT_BUILD_DIR}"
   212 fi
   213 
   214 # Don't eradicate directories if we need to restart
   215 if [ -z "${CT_RESTART}" ]; then
   216     # Get rid of pre-existing installed toolchain and previous build directories.
   217     # We need to do that _before_ we can safely log, because the log file will
   218     # most probably be in the toolchain directory.
   219     if [ "${CT_FORCE_DOWNLOAD}" = "y" -a -d "${CT_TARBALLS_DIR}" ]; then
   220         CT_DoForceRmdir "${CT_TARBALLS_DIR}"
   221     fi
   222     if [ "${CT_FORCE_EXTRACT}" = "y" -a -d "${CT_SRC_DIR}" ]; then
   223         CT_DoForceRmdir "${CT_SRC_DIR}"
   224     fi
   225     if [ -d "${CT_INSTALL_DIR}" ]; then
   226         CT_DoForceRmdir "${CT_INSTALL_DIR}"
   227     fi
   228     # In case we start anew, get rid of the previously saved state directory
   229     if [ -d "${CT_STATE_DIR}" ]; then
   230         CT_DoForceRmdir "${CT_STATE_DIR}"
   231     fi
   232 fi
   233 
   234 # Create the directories we'll use, even if restarting: it does no harm to
   235 # create already existent directories, and CT_BUILD_DIR needs to be created
   236 # anyway
   237 CT_DoExecLog ALL mkdir -p "${CT_TARBALLS_DIR}"
   238 CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   239 CT_DoExecLog ALL mkdir -p "${CT_BUILD_DIR}"
   240 CT_DoExecLog ALL mkdir -p "${CT_CONFIG_DIR}"
   241 CT_DoExecLog ALL mkdir -p "${CT_INSTALL_DIR}"
   242 CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}"
   243 CT_DoExecLog ALL mkdir -p "${CT_COMPLIBS_DIR}"
   244 if [ -z "${CT_CANADIAN}" ]; then
   245     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_STATIC_PREFIX_DIR}"
   246     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_SHARED_PREFIX_DIR}"
   247 fi
   248 
   249 # Only create the state dir if asked for a restartable build
   250 [ -n "${CT_DEBUG_CT_SAVE_STEPS}" ] && CT_DoExecLog ALL mkdir -p "${CT_STATE_DIR}"
   251 
   252 # Check install file system case-sensitiveness
   253 CT_DoExecLog DEBUG touch "${CT_PREFIX_DIR}/foo"
   254 CT_TestAndAbort "Your file system in '${CT_PREFIX_DIR}' is *not* case-sensitive!" -f "${CT_PREFIX_DIR}/FOO"
   255 CT_DoExecLog DEBUG rm -f "${CT_PREFIX_DIR}/foo"
   256 
   257 # Kludge: CT_INSTALL_DIR and CT_PREFIX_DIR might have grown read-only if
   258 # the previous build was successful. To be able to move the logfile there,
   259 # switch them back to read/write
   260 CT_DoExecLog ALL chmod -R u+w "${CT_INSTALL_DIR}" "${CT_PREFIX_DIR}"
   261 
   262 # Redirect log to the actual log file now we can
   263 # It's quite understandable that the log file will be installed in the install
   264 # directory, so we must first ensure it exists and is writeable (above) before
   265 # we can log there
   266 exec >/dev/null
   267 case "${CT_LOG_TO_FILE}" in
   268     y)  CT_LOG_FILE="${CT_PREFIX_DIR}/build.log"
   269         cat "${tmp_log_file}" >>"${CT_LOG_FILE}"
   270         rm -f "${tmp_log_file}"
   271         exec >>"${CT_LOG_FILE}"
   272         ;;
   273     *)  rm -f "${tmp_log_file}"
   274         ;;
   275 esac
   276 
   277 # Setting up the rest of the environment only if not restarting
   278 if [ -z "${CT_RESTART}" ]; then
   279     # Arrange paths depending on wether we use sys-root or not.
   280     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   281         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/sys-root"
   282         CT_DEBUGROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/debug-root"
   283         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/usr/include"
   284         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   285         CC_CORE_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   286         CC_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   287         LIBC_SYSROOT_ARG=""
   288         # glibc's prefix must be exactly /usr, else --with-sysroot'd gcc will get
   289         # confused when $sysroot/usr/include is not present.
   290         # Note: --prefix=/usr is magic!
   291         # See http://www.gnu.org/software/libc/FAQ.html#s-2.2
   292     else
   293         # plain old way. All libraries in prefix/target/lib
   294         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}"
   295         CT_DEBUGROOT_DIR="${CT_SYSROOT_DIR}"
   296         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/include"
   297         # hack!  Always use --with-sysroot for binutils.
   298         # binutils 2.14 and later obey it, older binutils ignore it.
   299         # Lets you build a working 32->64 bit cross gcc
   300         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   301         # Use --with-headers, else final gcc will define disable_glibc while
   302         # building libgcc, and you'll have no profiling
   303         CC_CORE_SYSROOT_ARG="--without-headers"
   304         CC_SYSROOT_ARG="--with-headers=${CT_HEADERS_DIR}"
   305         LIBC_SYSROOT_ARG="prefix="
   306     fi
   307     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}"
   308     CT_DoExecLog ALL mkdir -p "${CT_DEBUGROOT_DIR}"
   309 
   310     # Prepare the 'lib' directories in sysroot, else the ../lib64 hack used by
   311     # 32 -> 64 bit crosscompilers won't work, and build of final gcc will fail
   312     # with: "ld: cannot open crti.o: No such file or directory"
   313     # Also prepare the lib directory in the install dir, else some 64 bit archs
   314     # won't build
   315     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/lib"
   316     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/lib"
   317     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
   318     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/include"
   319 
   320     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   321         # Prevent gcc from installing its libraries outside of the sys-root
   322         CT_DoExecLog ALL ln -sf "./${CT_SYSROOT_DIR_PREFIX}/sys-root/lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib"
   323         # Prevent libc from installing its headers outside of the sysroot
   324         CT_DoExecLog ALL ln -sf "./${CT_SYSROOT_DIR_PREFIX}/sys-root/usr/include" "${CT_PREFIX_DIR}/${CT_TARGET}/include"
   325     fi
   326 
   327     # Now, in case we're 64 bits, just have lib64/ be a symlink to lib/
   328     # so as to have all libraries in the same directory (we can do that
   329     # because we are *not* multilib).
   330     if [ "${CT_ARCH_64}" = "y" ]; then
   331         CT_DoExecLog ALL ln -sf "lib" "${CT_PREFIX_DIR}/lib64"
   332         CT_DoExecLog ALL ln -sf "lib" "${CT_SYSROOT_DIR}/lib64"
   333         CT_DoExecLog ALL ln -sf "lib" "${CT_SYSROOT_DIR}/usr/lib64"
   334         CT_DoExecLog ALL ln -sf "lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib64"
   335     fi
   336 
   337     # Determine build system if not set by the user
   338     case "${CT_BUILD}" in
   339         "") CT_BUILD=$("${CT_BUILD_PREFIX}gcc${CT_BUILD_SUFFIX}" -dumpmachine);;
   340     esac
   341 
   342     # Prepare mangling patterns to later modify BUILD and HOST (see below)
   343     case "${CT_TOOLCHAIN_TYPE}" in
   344         cross)
   345             # A cross-compiler runs on the same machine it is built on
   346             CT_HOST="${CT_BUILD}"
   347             build_mangle="build_"
   348             host_mangle="build_"
   349             target_mangle=""
   350             install_build_tools_for="BUILD HOST"
   351             ;;
   352         canadian)
   353             build_mangle="build_"
   354             host_mangle="host_"
   355             target_mangle=""
   356             install_build_tools_for="BUILD HOST TARGET"
   357             ;;
   358         *)  CT_Abort "No code for '${CT_TOOLCHAIN_TYPE}' toolchain type!"
   359             ;;
   360     esac
   361 
   362     # Save the real tuples to generate shell-wrappers to the real tools
   363     CT_REAL_BUILD="${CT_BUILD}"
   364     CT_REAL_HOST="${CT_HOST}"
   365     CT_REAL_TARGET="${CT_TARGET}"
   366 
   367     # Canonicalise CT_BUILD and CT_HOST
   368     # Not only will it give us full-qualified tuples, but it will also ensure
   369     # that they are valid tuples (in case of typo with user-provided tuples)
   370     # That's way better than trying to rewrite config.sub ourselves...
   371     # CT_TARGET is already made canonical in CT_DoBuildTargetTuple
   372     CT_BUILD=$(CT_DoConfigSub "${CT_BUILD}")
   373     CT_HOST=$(CT_DoConfigSub "${CT_HOST}")
   374 
   375     # Modify BUILD and HOST so that gcc always generate a cross-compiler
   376     # even if any of the build, host or target machines are the same.
   377     # NOTE: we'll have to mangle the (BUILD|HOST)->TARGET x-compiler to
   378     #       support canadain build, later...
   379     CT_BUILD="${CT_BUILD/-/-${build_mangle}}"
   380     CT_HOST="${CT_HOST/-/-${host_mangle}}"
   381     CT_TARGET="${CT_TARGET/-/-${target_mangle}}"
   382 
   383     # Now we have mangled our BUILD and HOST tuples, we must fake the new
   384     # cross-tools for those mangled tuples.
   385     CT_DoLog DEBUG "Making build system tools available"
   386     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/buildtools"
   387     for m in ${install_build_tools_for}; do
   388         r="CT_REAL_${m}"
   389         v="CT_${m}"
   390         p="CT_${m}_PREFIX"
   391         s="CT_${m}_SUFFIX"
   392         if [ -n "${!p}" ]; then
   393             t="${!p}"
   394         else
   395             t="${!r}-"
   396         fi
   397 
   398         for tool in ar as dlltool gcc g++ gcj gnatbind gnatmake ld nm objcopy objdump ranlib strip windres; do
   399             # First try with prefix + suffix
   400             # Then try with prefix only
   401             # Then try with suffix only, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   402             # Finally try with neither prefix nor suffix, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   403             # This is needed, because some tools have a prefix and
   404             # a suffix (eg. gcc), while others may have only one,
   405             # or even none (eg. binutils)
   406             where=$(CT_Which "${t}${tool}${!s}")
   407             [ -z "${where}" ] && where=$(CT_Which "${t}${tool}")
   408             if [    -z "${where}"                         \
   409                  -a \(    "${m}" = "BUILD"                \
   410                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   411                 where=$(CT_Which "${tool}${!s}")
   412             fi
   413             if [ -z "${where}"                            \
   414                  -a \(    "${m}" = "BUILD"                \
   415                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   416                 where=$(CT_Which "${tool}")
   417             fi
   418 
   419             # Not all tools are available for all platforms, but some are really,
   420             # bally needed
   421             if [ -n "${where}" ]; then
   422                 CT_DoLog DEBUG "  '${!v}-${tool}' -> '${where}'"
   423                 printf "#${BANG}${CT_SHELL}\nexec '${where}' \"\${@}\"\n" >"${CT_PREFIX_DIR}/buildtools/${!v}-${tool}"
   424                 CT_DoExecLog ALL chmod 700 "${CT_PREFIX_DIR}/buildtools/${!v}-${tool}"
   425             else
   426                 case "${tool}" in
   427                     # We'll at least need some of them...
   428                     ar|as|gcc|ld|nm|objcopy|objdump|ranlib)
   429                         CT_Abort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!"
   430                         ;;
   431                     # Some are conditionnally required
   432                     # Add them in alphabetical (C locale) ordering
   433                     g++)
   434                         # g++ (needed for companion lib), only needed for HOST
   435                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${m}" = "HOST"
   436                         ;;
   437                     gcj)
   438                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${CT_CC_LANG_JAVA}" = "y"
   439                         ;;
   440                     # If any other is missing, only warn at low level
   441                     *)
   442                         # It does not deserve a WARN level.
   443                         CT_DoLog DEBUG "  Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : not required."
   444                         ;;
   445                 esac
   446             fi
   447         done
   448     done
   449 
   450     # Carefully add paths in the order we want them:
   451     #  - first try in ${CT_PREFIX_DIR}/bin
   452     #  - then try in ${CT_CC_CORE_SHARED_PREFIX_DIR}/bin
   453     #  - then try in ${CT_CC_CORE_STATIC_PREFIX_DIR}/bin
   454     #  - fall back to searching user's PATH
   455     # Of course, neither cross-native nor canadian can run on BUILD,
   456     # so don't add those PATHs in this case...
   457     case "${CT_TOOLCHAIN_TYPE}" in
   458         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:${PATH}";;
   459         canadian) export PATH="${CT_PREFIX_DIR}/buildtools:${PATH}";;
   460         *)  ;;
   461     esac
   462 
   463     # Some makeinfo versions are a pain in [put your most sensible body part here].
   464     # Go ahead with those, by creating a wrapper that keeps partial files, and that
   465     # never fails:
   466     CT_DoLog DEBUG "  'makeinfo' -> '$(CT_Which makeinfo)'"
   467     printf "#${BANG}${CT_SHELL}\n$(CT_Which makeinfo) --force \"\${@}\"\ntrue\n" >"${CT_PREFIX_DIR}/buildtools/makeinfo"
   468     CT_DoExecLog ALL chmod 700 "${CT_PREFIX_DIR}/buildtools/makeinfo"
   469 
   470     # Help gcc
   471     CT_CFLAGS_FOR_HOST=
   472     [ "${CT_USE_PIPES}" = "y" ] && CT_CFLAGS_FOR_HOST="${CT_CFLAGS_FOR_HOST} -pipe"
   473 
   474     # Override the configured jobs with what's been given on the command line
   475     [ -n "${CT_JOBS}" ] && CT_PARALLEL_JOBS="${CT_JOBS}"
   476 
   477     # Set the shell to be used by ./configure scripts and by Makefiles (those
   478     # that support it!).
   479     export CONFIG_SHELL="${CT_SHELL}"   # for ./configure
   480     export SHELL="${CT_SHELL}"          # for Makefiles
   481 
   482     # And help make go faster
   483     PARALLELMFLAGS=
   484     [ ${CT_PARALLEL_JOBS} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -j${CT_PARALLEL_JOBS}"
   485     [ ${CT_LOAD} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -l${CT_LOAD}"
   486     export PARALLELMFLAGS
   487 
   488     CT_DoLog EXTRA "Installing user-supplied crosstool-NG configuration"
   489     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/bin"
   490     CT_DoExecLog DEBUG install -m 0755 "${CT_LIB_DIR}/scripts/toolchain-config.in" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   491     CT_DoExecLog DEBUG sed -i -e 's,@@grep@@,"'"${grep}"'",;' "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   492     bzip2 -c -9 .config >>"${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   493 
   494     CT_DoStep EXTRA "Dumping internal crosstool-NG configuration"
   495     CT_DoLog EXTRA "Building a toolchain for:"
   496     CT_DoLog EXTRA "  build  = ${CT_REAL_BUILD}"
   497     CT_DoLog EXTRA "  host   = ${CT_REAL_HOST}"
   498     CT_DoLog EXTRA "  target = ${CT_TARGET}"
   499     set |grep -E '^CT_.+=' |sort |CT_DoLog DEBUG
   500     CT_DoLog DEBUG "Other environment:"
   501     printenv |grep -v -E '^CT_.+=' |CT_DoLog DEBUG
   502     CT_EndStep
   503 fi
   504 
   505 if [ -z "${CT_RESTART}" ]; then
   506     if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then
   507         CT_DoLog INFO "Downloading forbidden by configuration, skipping downloads"
   508     else
   509         CT_DoStep INFO "Retrieving needed toolchain components' tarballs"
   510         do_companion_tools_get
   511         do_kernel_get
   512         do_gmp_get
   513         do_mpfr_get
   514         do_ppl_get
   515         do_cloog_get
   516         do_mpc_get
   517         do_libelf_get
   518         do_binutils_get
   519         do_elf2flt_get
   520         do_sstrip_get
   521         do_cc_get
   522         do_libc_get
   523         do_debug_get
   524         CT_EndStep
   525     fi
   526 
   527     if [ "${CT_ONLY_DOWNLOAD}" != "y" ]; then
   528         if [ "${CT_FORCE_EXTRACT}" = "y" ]; then
   529             CT_DoForceRmdir "${CT_SRC_DIR}"
   530             CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   531         fi
   532 
   533         if [ "${CT_COMP_TOOLS}" = "y" ]; then
   534           CT_DoStep INFO "Extracting, patching and installing companion tools"
   535           do_companion_tools_extract
   536           do_companion_tools
   537           CT_EndStep
   538         fi
   539 
   540         CT_DoStep INFO "Extracting and patching toolchain components"
   541         do_kernel_extract
   542         do_gmp_extract
   543         do_mpfr_extract
   544         do_ppl_extract
   545         do_cloog_extract
   546         do_mpc_extract
   547         do_libelf_extract
   548         do_binutils_extract
   549         do_elf2flt_extract
   550         do_sstrip_extract
   551         do_cc_extract
   552         do_libc_extract
   553         do_debug_extract
   554         CT_EndStep
   555     fi
   556 fi
   557 
   558 # Now for the job by itself. Go have a coffee!
   559 if [ "${CT_ONLY_DOWNLOAD}" != "y" -a "${CT_ONLY_EXTRACT}" != "y" ]; then
   560     # Because of CT_RESTART, this becomes quite complex
   561     do_stop=0
   562     prev_step=
   563     [ -n "${CT_RESTART}" ] && do_it=0 || do_it=1
   564     # Aha! CT_STEPS comes from steps.mk!
   565     for step in ${CT_STEPS}; do
   566         if [ ${do_it} -eq 0 ]; then
   567             if [ "${CT_RESTART}" = "${step}" ]; then
   568                 CT_DoLoadState "${step}"
   569                 do_it=1
   570                 do_stop=0
   571             fi
   572         else
   573             CT_DoSaveState ${step}
   574             if [ ${do_stop} -eq 1 ]; then
   575                 CT_DoLog ERROR "Stopping just after step '${prev_step}', as requested."
   576                 exit 0
   577             fi
   578         fi
   579         if [ ${do_it} -eq 1 ]; then
   580             do_${step}
   581             if [ "${CT_STOP}" = "${step}" ]; then
   582                 do_stop=1
   583             fi
   584             if [ "${CT_DEBUG_PAUSE_STEPS}" = "y" ]; then
   585                 CT_DoPause "Step '${step}' finished"
   586             fi
   587         fi
   588         prev_step="${step}"
   589     done
   590 fi
   591 
   592 CT_DoEnd INFO
   593 
   594 # From now-on, it can become impossible to log any time, because
   595 # either we're compressing the log file, or it can become RO any
   596 # moment... Consign all ouptut to oblivion...
   597 CT_DoLog INFO "Finishing installation (may take a few seconds)..."
   598 exec >/dev/null 2>&1
   599 
   600 [ "${CT_LOG_FILE_COMPRESS}" = y ] && bzip2 -9 "${CT_LOG_FILE}"
   601 [ "${CT_INSTALL_DIR_RO}" = "y"  ] && chmod -R a-w "${CT_INSTALL_DIR}"
   602 
   603 trap - EXIT