scripts/crosstool-NG.sh.in
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Dec 20 00:07:29 2010 +0100 (2010-12-20)
changeset 2308 911b3a703497
parent 2307 2efd46963086
child 2339 730e2d63296b
permissions -rw-r--r--
buildtools: the buildtools dir is in fact a prefix

Consider the buildtools install directory as a prefix directory,
that is, install buildtools in prefix/bin/, not in prefix/.

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 . "${CT_LIB_DIR}/scripts/functions"
    22 
    23 # Parse the configuration file
    24 # It has some info about the logging facility, so include it early
    25 . .config
    26 # Yes! We can do full logging from now on!
    27 
    28 # Overide the locale early, in case we ever translate crosstool-NG messages
    29 if [ -z "${CT_NO_OVERIDE_LC_MESSAGES}" ]; then
    30     export LC_ALL=C
    31     export LANG=C
    32 fi
    33 
    34 # remove . from PATH since it can cause gcc build failures
    35 CT_SanitizePath
    36 
    37 # Some sanity checks in the environment and needed tools
    38 CT_DoLog INFO "Performing some trivial sanity checks"
    39 CT_TestAndAbort "Don't set LD_LIBRARY_PATH. It screws up the build." -n "${LD_LIBRARY_PATH}"
    40 CT_TestAndAbort "Don't set CFLAGS. It screws up the build." -n "${CFLAGS}"
    41 CT_TestAndAbort "Don't set CXXFLAGS. It screws up the build." -n "${CXXFLAGS}"
    42 CT_Test "GREP_OPTIONS screws up the build. Resetting." -n "${GREP_OPTIONS}"
    43 export GREP_OPTIONS=
    44 
    45 # Some sanity checks on paths content
    46 for d in            \
    47     LOCAL_TARBALLS  \
    48     WORK            \
    49     PREFIX          \
    50     INSTALL         \
    51     ; do
    52         eval dir="\${CT_${d}_DIR}"
    53         case "${dir}" in
    54             *" "*)
    55                 CT_Abort "'CT_${d}_DIR'='${dir}' contains a space in it.\nDon't use spaces in paths, it breaks things."
    56                 ;;
    57         esac
    58 done
    59 
    60 # Where will we work?
    61 CT_WORK_DIR="${CT_WORK_DIR:-${CT_TOP_DIR}/targets}"
    62 CT_DoExecLog ALL mkdir -p "${CT_WORK_DIR}"
    63 
    64 # Check build file system case-sensitiveness
    65 CT_DoExecLog DEBUG touch "${CT_WORK_DIR}/foo"
    66 CT_TestAndAbort "Your file system in '${CT_WORK_DIR}' is *not* case-sensitive!" -f "${CT_WORK_DIR}/FOO"
    67 CT_DoExecLog DEBUG rm -f "${CT_WORK_DIR}/foo"
    68 
    69 # What's our shell?
    70 # Will be plain /bin/sh on most systems, except if we have /bin/ash and we
    71 # _explictly_ required using it
    72 case "${CT_CONFIG_SHELL}" in
    73     sh)     CT_SHELL="/bin/sh";;
    74     ash)    CT_SHELL="/bin/ash";;
    75     bash)   CT_SHELL="${BASH}";;
    76     custom) CT_SHELL="${CT_CONFIG_SHELL_CUSTOM_PATH}";;
    77 esac
    78 
    79 # Check the user is using an existing SHELL to be used by ./configure and Makefiles
    80 CT_TestOrAbort "The CONFIG_SHELL '${CT_CONFIG_SHELL}' (${CT_SHELL}) is not valid" -f "${CT_SHELL}" -a -x "${CT_SHELL}"
    81 
    82 # Create the bin-overide early
    83 # Contains symlinks to the tools found by ./configure
    84 # Note: CT_DoLog and CT_DoExecLog do not use any of those tool, so
    85 # they can be safely used
    86 CT_TOOLS_OVERIDE_DIR="${CT_WORK_DIR}/tools"
    87 CT_DoLog DEBUG "Creating bin-overide for tools in '${CT_TOOLS_OVERIDE_DIR}'"
    88 CT_DoExecLog DEBUG mkdir -p "${CT_TOOLS_OVERIDE_DIR}/bin"
    89 cat "${CT_LIB_DIR}/paths.mk" |while read trash line; do
    90     tool="${line%%=*}"
    91     path="${line#*=}"
    92     CT_DoLog DEBUG "Creating script-override for '${tool}' -> '${path}'"
    93     printf "#${BANG}${CT_SHELL}\nexec '${path}' \"\${@}\"\n" >"${CT_TOOLS_OVERIDE_DIR}/bin/${tool}"
    94     CT_DoExecLog ALL chmod 700 "${CT_TOOLS_OVERIDE_DIR}/bin/${tool}"
    95 done
    96 export PATH="${CT_TOOLS_OVERIDE_DIR}/bin:${PATH}"
    97 
    98 # Start date. Can't be done until we know the locale
    99 # Also requires the bin-override tools
   100 CT_STAR_DATE=$(CT_DoDate +%s%N)
   101 CT_STAR_DATE_HUMAN=$(CT_DoDate +%Y%m%d.%H%M%S)
   102 
   103 # Log real begining of build, now
   104 CT_DoLog INFO "Build started ${CT_STAR_DATE_HUMAN}"
   105 
   106 CT_DoStep DEBUG "Dumping user-supplied crosstool-NG configuration"
   107 CT_DoExecLog DEBUG grep -E '^(# |)CT_' .config
   108 CT_EndStep
   109 
   110 CT_DoLog DEBUG "Unsetting and unexporting MAKEFLAGS"
   111 unset MAKEFLAGS
   112 export MAKEFLAGS
   113 
   114 CT_DoLog INFO "Building environment variables"
   115 
   116 # Include sub-scripts instead of calling them: that way, we do not have to
   117 # export any variable, nor re-parse the configuration and functions files.
   118 . "${CT_LIB_DIR}/scripts/build/internals.sh"
   119 . "${CT_LIB_DIR}/scripts/build/arch/${CT_ARCH}.sh"
   120 . "${CT_LIB_DIR}/scripts/build/companion_tools.sh"
   121 . "${CT_LIB_DIR}/scripts/build/kernel/${CT_KERNEL}.sh"
   122 . "${CT_LIB_DIR}/scripts/build/companion_libs/gmp.sh"
   123 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpfr.sh"
   124 . "${CT_LIB_DIR}/scripts/build/companion_libs/ppl.sh"
   125 . "${CT_LIB_DIR}/scripts/build/companion_libs/cloog.sh"
   126 . "${CT_LIB_DIR}/scripts/build/companion_libs/mpc.sh"
   127 . "${CT_LIB_DIR}/scripts/build/companion_libs/libelf.sh"
   128 . "${CT_LIB_DIR}/scripts/build/binutils/binutils.sh"
   129 . "${CT_LIB_DIR}/scripts/build/binutils/elf2flt.sh"
   130 . "${CT_LIB_DIR}/scripts/build/binutils/sstrip.sh"
   131 . "${CT_LIB_DIR}/scripts/build/libc/${CT_LIBC}.sh"
   132 . "${CT_LIB_DIR}/scripts/build/cc/${CT_CC}.sh"
   133 . "${CT_LIB_DIR}/scripts/build/debug.sh"
   134 . "${CT_LIB_DIR}/scripts/build/test_suite.sh"
   135 
   136 # Target tuple: CT_TARGET needs a little love:
   137 CT_DoBuildTargetTuple
   138 
   139 # Kludge: If any of the configured options needs CT_TARGET,
   140 # then rescan the options file now:
   141 . .config
   142 
   143 # Sanity check some directories
   144 CT_TestAndAbort "'CT_PREFIX_DIR' is not set: where should I install?" -z "${CT_PREFIX_DIR}"
   145 
   146 # Second kludge: merge user-supplied target CFLAGS with architecture-provided
   147 # target CFLAGS. Do the same for LDFLAGS in case it happens in the future.
   148 # Put user-supplied flags at the end, so that they take precedence.
   149 CT_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_TARGET_CFLAGS}"
   150 CT_TARGET_LDFLAGS="${CT_ARCH_TARGET_LDFLAGS} ${CT_TARGET_LDFLAGS}"
   151 CT_CC_CORE_EXTRA_CONFIG="${CT_ARCH_CC_CORE_EXTRA_CONFIG} ${CT_CC_CORE_EXTRA_CONFIG}"
   152 CT_CC_EXTRA_CONFIG="${CT_ARCH_CC_EXTRA_CONFIG} ${CT_CC_EXTRA_CONFIG}"
   153 
   154 # Compute the working directories names
   155 CT_TARBALLS_DIR="${CT_WORK_DIR}/tarballs"
   156 CT_SRC_DIR="${CT_WORK_DIR}/src"
   157 CT_BUILD_DIR="${CT_WORK_DIR}/${CT_TARGET}/build"
   158 CT_BUILDTOOLS_PREFIX_DIR="${CT_WORK_DIR}/${CT_TARGET}/buildtools"
   159 CT_STATE_DIR="${CT_WORK_DIR}/${CT_TARGET}/state"
   160 CT_CONFIG_DIR="${CT_BUILD_DIR}/configs"
   161 if [ "${CT_COMPLIBS_SHARED}" = "y" ]; then
   162     CT_COMPLIBS_DIR="${CT_PREFIX_DIR}"
   163     # Set LD_LIBRARY_PATH to point to prefix/lib so we can find our own
   164     # libraries; add as first path, so we get hit first by the dynamic linker
   165     CT_SetLibPath "${CT_COMPLIBS_DIR}/lib" first
   166 else
   167     CT_COMPLIBS_DIR="${CT_BUILD_DIR}/static"
   168 fi
   169 
   170 # Compute test suite install directory
   171 CT_TEST_SUITE_DIR=${CT_INSTALL_DIR}/test-suite
   172 
   173 # Note: we'll always install the core compiler in its own directory, so as to
   174 # not mix the two builds: core and final.
   175 CT_CC_CORE_STATIC_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-static"
   176 CT_CC_CORE_SHARED_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core-shared"
   177 
   178 # We must ensure that we can restart if asked for!
   179 if [ -n "${CT_RESTART}" -a ! -d "${CT_STATE_DIR}"  ]; then
   180     CT_DoLog ERROR "You asked to restart a non-restartable build"
   181     CT_DoLog ERROR "This happened because you didn't set CT_DEBUG_CT_SAVE_STEPS"
   182     CT_DoLog ERROR "in the config options for the previous build, or the state"
   183     CT_DoLog ERROR "directory for the previous build was deleted."
   184     CT_Abort "I will stop here to avoid any carnage"
   185 fi
   186 
   187 # If the local tarball directory does not exist, say so, and don't try to save there!
   188 if [    "${CT_SAVE_TARBALLS}" = "y"     \
   189      -a ! -d "${CT_LOCAL_TARBALLS_DIR}" ]; then
   190     CT_DoLog WARN "Directory '${CT_LOCAL_TARBALLS_DIR}' does not exist."
   191     CT_DoLog WARN "Will not save downloaded tarballs to local storage."
   192     CT_SAVE_TARBALLS=
   193 fi
   194 
   195 # Check now if we can write to the destination directory:
   196 if [ -d "${CT_INSTALL_DIR}" ]; then
   197     CT_TestAndAbort "Destination directory '${CT_INSTALL_DIR}' is not removable" ! -w $(dirname "${CT_INSTALL_DIR}")
   198 fi
   199 
   200 # Good, now grab a bit of informations on the system we're being run on,
   201 # just in case something goes awok, and it's not our fault:
   202 CT_SYS_USER=$(id -un)
   203 CT_SYS_HOSTNAME=$(hostname -f 2>/dev/null || true)
   204 # Hmmm. Some non-DHCP-enabled machines do not have an FQDN... Fall back to node name.
   205 CT_SYS_HOSTNAME="${CT_SYS_HOSTNAME:-$(uname -n)}"
   206 CT_SYS_KERNEL=$(uname -s)
   207 CT_SYS_REVISION=$(uname -r)
   208 CT_SYS_OS=$(uname -s)
   209 CT_SYS_MACHINE=$(uname -m)
   210 CT_SYS_PROCESSOR=$(uname -p)
   211 CT_SYS_GCC=$(gcc -dumpversion)
   212 CT_SYS_TARGET=$(CT_DoConfigGuess)
   213 CT_TOOLCHAIN_ID="crosstool-${CT_VERSION} build ${CT_STAR_DATE_HUMAN} by ${CT_SYS_USER}@${CT_SYS_HOSTNAME}"
   214 
   215 CT_DoLog EXTRA "Preparing working directories"
   216 
   217 # Ah! The build directory shall be eradicated, even if we restart!
   218 if [ -d "${CT_BUILD_DIR}" ]; then
   219     CT_DoForceRmdir "${CT_BUILD_DIR}"
   220 fi
   221 
   222 # Don't eradicate directories if we need to restart
   223 if [ -z "${CT_RESTART}" ]; then
   224     # Get rid of pre-existing installed toolchain and previous build directories.
   225     # We need to do that _before_ we can safely log, because the log file will
   226     # most probably be in the toolchain directory.
   227     if [ "${CT_FORCE_DOWNLOAD}" = "y" -a -d "${CT_TARBALLS_DIR}" ]; then
   228         CT_DoForceRmdir "${CT_TARBALLS_DIR}"
   229     fi
   230     if [ "${CT_FORCE_EXTRACT}" = "y" -a -d "${CT_SRC_DIR}" ]; then
   231         CT_DoForceRmdir "${CT_SRC_DIR}"
   232     fi
   233     if [ -d "${CT_INSTALL_DIR}" -a "${CT_RM_RF_PREFIX_DIR}" = "y" ]; then
   234         CT_DoForceRmdir "${CT_INSTALL_DIR}"
   235     fi
   236     # In case we start anew, get rid of the previously saved state directory
   237     if [ -d "${CT_STATE_DIR}" ]; then
   238         CT_DoForceRmdir "${CT_STATE_DIR}"
   239     fi
   240 fi
   241 
   242 # Create the directories we'll use, even if restarting: it does no harm to
   243 # create already existent directories, and CT_BUILD_DIR needs to be created
   244 # anyway
   245 CT_DoExecLog ALL mkdir -p "${CT_TARBALLS_DIR}"
   246 CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   247 CT_DoExecLog ALL mkdir -p "${CT_BUILD_DIR}"
   248 CT_DoExecLog ALL mkdir -p "${CT_BUILDTOOLS_PREFIX_DIR}/bin"
   249 CT_DoExecLog ALL mkdir -p "${CT_CONFIG_DIR}"
   250 CT_DoExecLog ALL mkdir -p "${CT_INSTALL_DIR}"
   251 CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}"
   252 CT_DoExecLog ALL mkdir -p "${CT_COMPLIBS_DIR}"
   253 if [ -z "${CT_CANADIAN}" ]; then
   254     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_STATIC_PREFIX_DIR}"
   255     CT_DoExecLog ALL mkdir -p "${CT_CC_CORE_SHARED_PREFIX_DIR}"
   256 fi
   257 
   258 # Only create the state dir if asked for a restartable build
   259 [ -n "${CT_DEBUG_CT_SAVE_STEPS}" ] && CT_DoExecLog ALL mkdir -p "${CT_STATE_DIR}"
   260 
   261 # Check install file system case-sensitiveness
   262 CT_DoExecLog DEBUG touch "${CT_PREFIX_DIR}/foo"
   263 CT_TestAndAbort "Your file system in '${CT_PREFIX_DIR}' is *not* case-sensitive!" -f "${CT_PREFIX_DIR}/FOO"
   264 CT_DoExecLog DEBUG rm -f "${CT_PREFIX_DIR}/foo"
   265 
   266 # Kludge: CT_INSTALL_DIR and CT_PREFIX_DIR might have grown read-only if
   267 # the previous build was successful. To be able to move the logfile there,
   268 # switch them back to read/write
   269 CT_DoExecLog ALL chmod -R u+w "${CT_INSTALL_DIR}" "${CT_PREFIX_DIR}"
   270 
   271 # Redirect log to the actual log file now we can
   272 # It's quite understandable that the log file will be installed in the install
   273 # directory, so we must first ensure it exists and is writeable (above) before
   274 # we can log there
   275 exec >/dev/null
   276 case "${CT_LOG_TO_FILE}" in
   277     y)  CT_LOG_FILE="${CT_PREFIX_DIR}/build.log"
   278         cat "${tmp_log_file}" >>"${CT_LOG_FILE}"
   279         rm -f "${tmp_log_file}"
   280         exec >>"${CT_LOG_FILE}"
   281         ;;
   282     *)  rm -f "${tmp_log_file}"
   283         ;;
   284 esac
   285 
   286 # Setting up the rest of the environment only if not restarting
   287 if [ -z "${CT_RESTART}" ]; then
   288     case "${CT_SYSROOT_NAME}" in
   289         "")     CT_SYSROOT_NAME="sysroot";;
   290         .)      CT_Abort "Sysroot name is set to '.' which is forbidden";;
   291         *' '*)  CT_Abort "Sysroot name contains forbidden space(s): '${CT_SYSROOT_NAME}'";;
   292         */*)    CT_Abort "Sysroot name contains forbidden slash(es): '${CT_SYSROOT_NAME}'";;
   293     esac
   294 
   295     # Arrange paths depending on wether we use sysroot or not.
   296     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   297         CT_SYSROOT_REL_DIR="${CT_SYSROOT_DIR_PREFIX}/${CT_SYSROOT_NAME}"
   298         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_REL_DIR}"
   299         CT_DEBUGROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/${CT_SYSROOT_DIR_PREFIX}/debug-root"
   300         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/usr/include"
   301         CT_SanitiseVarDir CT_SYSROOT_REL_DIR CT_SYSROOT_DIR CT_DEBUGROOT_DIR CT_HEADERS_DIR 
   302         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   303         CC_CORE_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   304         CC_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   305         LIBC_SYSROOT_ARG=""
   306         # glibc's prefix must be exactly /usr, else --with-sysroot'd gcc will get
   307         # confused when $sysroot/usr/include is not present.
   308         # Note: --prefix=/usr is magic!
   309         # See http://www.gnu.org/software/libc/FAQ.html#s-2.2
   310     else
   311         # plain old way. All libraries in prefix/target/lib
   312         CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}"
   313         CT_DEBUGROOT_DIR="${CT_SYSROOT_DIR}"
   314         CT_HEADERS_DIR="${CT_SYSROOT_DIR}/include"
   315         CT_SanitiseVarDir CT_SYSROOT_DIR CT_DEBUGROOT_DIR CT_HEADERS_DIR 
   316         # hack!  Always use --with-sysroot for binutils.
   317         # binutils 2.14 and later obey it, older binutils ignore it.
   318         # Lets you build a working 32->64 bit cross gcc
   319         BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
   320         # Use --with-headers, else final gcc will define disable_glibc while
   321         # building libgcc, and you'll have no profiling
   322         CC_CORE_SYSROOT_ARG="--without-headers"
   323         CC_SYSROOT_ARG="--with-headers=${CT_HEADERS_DIR}"
   324         LIBC_SYSROOT_ARG="prefix="
   325     fi
   326     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}"
   327     CT_DoExecLog ALL mkdir -p "${CT_DEBUGROOT_DIR}"
   328 
   329     # Prepare the 'lib' directories in sysroot, else the ../lib64 hack used by
   330     # 32 -> 64 bit crosscompilers won't work, and build of final gcc will fail
   331     # with: "ld: cannot open crti.o: No such file or directory"
   332     # Also prepare the lib directory in the install dir, else some 64 bit archs
   333     # won't build
   334     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/lib"
   335     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/lib"
   336     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
   337     CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/include"
   338 
   339     if [ "${CT_USE_SYSROOT}" = "y" ]; then
   340         # Prevent gcc from installing its libraries outside of the sysroot
   341         CT_DoExecLog ALL ln -sf ".${CT_SYSROOT_REL_DIR}/lib" "${CT_PREFIX_DIR}/${CT_TARGET}/lib"
   342     fi
   343 
   344     # Since we're *not* multilib on the target side, we want all the
   345     # libraries to end up in "lib".  We create "lib64" (for 64-bit
   346     # build or host architectures) and "lib32" (for 32-bit emulation
   347     # on 64-bit) as symlinks to "lib".
   348     #
   349     # Not all of these symlinks are necessary, but better safe than
   350     # sorry. They are summarily removed by build/internals.sh:do_finish.
   351     for d in                            \
   352         "${CT_PREFIX_DIR}"              \
   353         "${CT_SYSROOT_DIR}"             \
   354         "${CT_SYSROOT_DIR}/usr"         \
   355         "${CT_PREFIX_DIR}/${CT_TARGET}" \
   356     ; do
   357         CT_DoExecLog ALL ln -sf "lib" "${d}/lib32"
   358         CT_DoExecLog ALL ln -sf "lib" "${d}/lib64"
   359     done
   360 
   361     # Determine build system if not set by the user
   362     if [ -z "${CT_BUILD}" ]; then
   363         CT_BUILD=$(CT_DoConfigGuess)
   364     fi
   365 
   366     # Prepare mangling patterns to later modify BUILD and HOST (see below)
   367     case "${CT_TOOLCHAIN_TYPE}" in
   368         cross)
   369             # A cross-compiler runs on the same machine it is built on
   370             CT_HOST="${CT_BUILD}"
   371             build_mangle="build_"
   372             host_mangle="build_"
   373             target_mangle=""
   374             install_build_tools_for="BUILD HOST"
   375             ;;
   376         canadian)
   377             build_mangle="build_"
   378             host_mangle="host_"
   379             target_mangle=""
   380             install_build_tools_for="BUILD HOST TARGET"
   381             ;;
   382         *)  CT_Abort "No code for '${CT_TOOLCHAIN_TYPE}' toolchain type!"
   383             ;;
   384     esac
   385 
   386     # Save the real tuples to generate shell-wrappers to the real tools
   387     CT_REAL_BUILD="${CT_BUILD}"
   388     CT_REAL_HOST="${CT_HOST}"
   389     CT_REAL_TARGET="${CT_TARGET}"
   390 
   391     # Canonicalise CT_BUILD and CT_HOST
   392     # Not only will it give us full-qualified tuples, but it will also ensure
   393     # that they are valid tuples (in case of typo with user-provided tuples)
   394     # That's way better than trying to rewrite config.sub ourselves...
   395     # CT_TARGET is already made canonical in CT_DoBuildTargetTuple
   396     CT_BUILD=$(CT_DoConfigSub "${CT_BUILD}")
   397     CT_HOST=$(CT_DoConfigSub "${CT_HOST}")
   398 
   399     # Modify BUILD and HOST so that gcc always generate a cross-compiler
   400     # even if any of the build, host or target machines are the same.
   401     # NOTE: we'll have to mangle the (BUILD|HOST)->TARGET x-compiler to
   402     #       support canadain build, later...
   403     CT_BUILD="${CT_BUILD/-/-${build_mangle}}"
   404     CT_HOST="${CT_HOST/-/-${host_mangle}}"
   405     CT_TARGET="${CT_TARGET/-/-${target_mangle}}"
   406 
   407     # Now we have mangled our BUILD and HOST tuples, we must fake the new
   408     # cross-tools for those mangled tuples.
   409     CT_DoLog DEBUG "Making build system tools available"
   410     for m in ${install_build_tools_for}; do
   411         r="CT_REAL_${m}"
   412         v="CT_${m}"
   413         p="CT_${m}_PREFIX"
   414         s="CT_${m}_SUFFIX"
   415         if [ -n "${!p}" ]; then
   416             t="${!p}"
   417         else
   418             t="${!r}-"
   419         fi
   420 
   421         for tool in ar as dlltool gcc g++ gcj gnatbind gnatmake ld nm objcopy objdump ranlib strip windres; do
   422             # First try with prefix + suffix
   423             # Then try with prefix only
   424             # Then try with suffix only, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   425             # Finally try with neither prefix nor suffix, but only for BUILD, and HOST iff REAL_BUILD == REAL_HOST
   426             # This is needed, because some tools have a prefix and
   427             # a suffix (eg. gcc), while others may have only one,
   428             # or even none (eg. binutils)
   429             where=$(CT_Which "${t}${tool}${!s}")
   430             [ -z "${where}" ] && where=$(CT_Which "${t}${tool}")
   431             if [    -z "${where}"                         \
   432                  -a \(    "${m}" = "BUILD"                \
   433                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   434                 where=$(CT_Which "${tool}${!s}")
   435             fi
   436             if [ -z "${where}"                            \
   437                  -a \(    "${m}" = "BUILD"                \
   438                        -o "${CT_REAL_BUILD}" = "${!r}" \) ]; then
   439                 where=$(CT_Which "${tool}")
   440             fi
   441 
   442             # Not all tools are available for all platforms, but some are really,
   443             # bally needed
   444             if [ -n "${where}" ]; then
   445                 CT_DoLog DEBUG "  '${!v}-${tool}' -> '${where}'"
   446                 printf "#${BANG}${CT_SHELL}\nexec '${where}' \"\${@}\"\n" >"${CT_BUILDTOOLS_PREFIX_DIR}/bin/${!v}-${tool}"
   447                 CT_DoExecLog ALL chmod 700 "${CT_BUILDTOOLS_PREFIX_DIR}/bin/${!v}-${tool}"
   448             else
   449                 case "${tool}" in
   450                     # We'll at least need some of them...
   451                     ar|as|gcc|ld|nm|objcopy|objdump|ranlib)
   452                         CT_Abort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!"
   453                         ;;
   454                     # Some are conditionnally required
   455                     # Add them in alphabetical (C locale) ordering
   456                     g++)
   457                         # g++ (needed for companion lib), only needed for HOST
   458                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${m}" = "HOST"
   459                         ;;
   460                     gcj)
   461                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${CT_CC_LANG_JAVA}" = "y"
   462                         ;;
   463                     strip)
   464                         CT_TestAndAbort "Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : either needed!" "${CT_STRIP_ALL_TOOLCHAIN_EXECUTABLES}" = "y"
   465                         ;;
   466                     # If any other is missing, only warn at low level
   467                     *)
   468                         # It does not deserve a WARN level.
   469                         CT_DoLog DEBUG "  Missing: '${t}${tool}${!s}' or '${t}${tool}' or '${tool}' : not required."
   470                         ;;
   471                 esac
   472             fi
   473         done
   474     done
   475 
   476     # Some makeinfo versions are a pain in [put your most sensible body part here].
   477     # Go ahead with those, by creating a wrapper that keeps partial files, and that
   478     # never fails:
   479     CT_DoLog DEBUG "  'makeinfo' -> '$(CT_Which makeinfo)'"
   480     printf "#${BANG}${CT_SHELL}\n$(CT_Which makeinfo) --force \"\${@}\"\ntrue\n" >"${CT_BUILDTOOLS_PREFIX_DIR}/bin/makeinfo"
   481     CT_DoExecLog ALL chmod 700 "${CT_BUILDTOOLS_PREFIX_DIR}/bin/makeinfo"
   482 
   483     # Carefully add paths in the order we want them:
   484     #  - first try in ${CT_PREFIX_DIR}/bin
   485     #  - then try in ${CT_CC_CORE_SHARED_PREFIX_DIR}/bin
   486     #  - then try in ${CT_CC_CORE_STATIC_PREFIX_DIR}/bin
   487     #  - fall back to searching user's PATH
   488     # Of course, neither cross-native nor canadian can run on BUILD,
   489     # so don't add those PATHs in this case...
   490     case "${CT_TOOLCHAIN_TYPE}" in
   491         cross)  export PATH="${CT_BUILDTOOLS_PREFIX_DIR}/bin:${CT_PREFIX_DIR}/bin:${CT_CC_CORE_SHARED_PREFIX_DIR}/bin:${CT_CC_CORE_STATIC_PREFIX_DIR}/bin:${PATH}";;
   492         canadian) export PATH="${CT_BUILDTOOLS_PREFIX_DIR}/bin:${PATH}";;
   493         *)  ;;
   494     esac
   495 
   496     # Help gcc
   497     CT_CFLAGS_FOR_HOST=
   498     [ "${CT_USE_PIPES}" = "y" ] && CT_CFLAGS_FOR_HOST="${CT_CFLAGS_FOR_HOST} -pipe"
   499 
   500     # Override the configured jobs with what's been given on the command line
   501     [ -n "${CT_JOBS}" ] && CT_PARALLEL_JOBS="${CT_JOBS}"
   502 
   503     # Set the shell to be used by ./configure scripts and by Makefiles (those
   504     # that support it!).
   505     export CONFIG_SHELL="${CT_SHELL}"   # for ./configure
   506     export SHELL="${CT_SHELL}"          # for Makefiles
   507 
   508     # And help make go faster
   509     JOBSFLAGS=
   510     [ ${CT_PARALLEL_JOBS} -ne 0 ] && JOBSFLAGS="${JOBSFLAGS} -j${CT_PARALLEL_JOBS}"
   511     [ ${CT_LOAD} -ne 0 ] && JOBSFLAGS="${JOBSFLAGS} -l${CT_LOAD}"
   512 
   513     CT_DoLog EXTRA "Installing user-supplied crosstool-NG configuration"
   514     CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/bin"
   515     CT_DoExecLog DEBUG install -m 0755 "${CT_LIB_DIR}/scripts/toolchain-config.in" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   516     CT_DoExecLog DEBUG sed -i -e 's,@@grep@@,"'"${grep}"'",;' "${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   517     bzip2 -c -9 .config >>"${CT_PREFIX_DIR}/bin/${CT_TARGET}-ct-ng.config"
   518 
   519     CT_DoStep EXTRA "Dumping internal crosstool-NG configuration"
   520     CT_DoLog EXTRA "Building a toolchain for:"
   521     CT_DoLog EXTRA "  build  = ${CT_REAL_BUILD}"
   522     CT_DoLog EXTRA "  host   = ${CT_REAL_HOST}"
   523     CT_DoLog EXTRA "  target = ${CT_TARGET}"
   524     set |grep -E '^CT_.+=' |sort |CT_DoLog DEBUG
   525     CT_DoLog DEBUG "Other environment:"
   526     printenv |grep -v -E '^CT_.+=' |CT_DoLog DEBUG
   527     CT_EndStep
   528 fi
   529 
   530 if [ -z "${CT_RESTART}" ]; then
   531     if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then
   532         CT_DoLog INFO "Downloading forbidden by configuration, skipping downloads"
   533     else
   534         CT_DoStep INFO "Retrieving needed toolchain components' tarballs"
   535         do_companion_tools_get
   536         do_kernel_get
   537         do_gmp_get
   538         do_mpfr_get
   539         do_ppl_get
   540         do_cloog_get
   541         do_mpc_get
   542         do_libelf_get
   543         do_binutils_get
   544         do_elf2flt_get
   545         do_sstrip_get
   546         do_cc_get
   547         do_libc_get
   548         do_debug_get
   549         do_test_suite_get
   550         CT_EndStep
   551     fi
   552 
   553     if [ "${CT_ONLY_DOWNLOAD}" != "y" ]; then
   554         if [ "${CT_FORCE_EXTRACT}" = "y" ]; then
   555             CT_DoForceRmdir "${CT_SRC_DIR}"
   556             CT_DoExecLog ALL mkdir -p "${CT_SRC_DIR}"
   557         fi
   558 
   559         if [ "${CT_COMP_TOOLS}" = "y" ]; then
   560           CT_DoStep INFO "Extracting, patching and installing companion tools"
   561           do_companion_tools_extract
   562           do_companion_tools
   563           CT_EndStep
   564         fi
   565 
   566         CT_DoStep INFO "Extracting and patching toolchain components"
   567         do_kernel_extract
   568         do_gmp_extract
   569         do_mpfr_extract
   570         do_ppl_extract
   571         do_cloog_extract
   572         do_mpc_extract
   573         do_libelf_extract
   574         do_binutils_extract
   575         do_elf2flt_extract
   576         do_sstrip_extract
   577         do_cc_extract
   578         do_libc_extract
   579         do_debug_extract
   580         do_test_suite_extract
   581         CT_EndStep
   582     fi
   583 fi
   584 
   585 # Now for the job by itself. Go have a coffee!
   586 if [ "${CT_ONLY_DOWNLOAD}" != "y" -a "${CT_ONLY_EXTRACT}" != "y" ]; then
   587     # Because of CT_RESTART, this becomes quite complex
   588     do_stop=0
   589     prev_step=
   590     [ -n "${CT_RESTART}" ] && do_it=0 || do_it=1
   591     # Aha! CT_STEPS comes from steps.mk!
   592     for step in ${CT_STEPS}; do
   593         if [ ${do_it} -eq 0 ]; then
   594             if [ "${CT_RESTART}" = "${step}" ]; then
   595                 CT_DoLoadState "${step}"
   596                 do_it=1
   597                 do_stop=0
   598             fi
   599         else
   600             CT_DoSaveState ${step}
   601             if [ ${do_stop} -eq 1 ]; then
   602                 CT_DoLog ERROR "Stopping just after step '${prev_step}', as requested."
   603                 exit 0
   604             fi
   605         fi
   606         if [ ${do_it} -eq 1 ]; then
   607             do_${step}
   608             if [ "${CT_STOP}" = "${step}" ]; then
   609                 do_stop=1
   610             fi
   611             if [ "${CT_DEBUG_PAUSE_STEPS}" = "y" ]; then
   612                 CT_DoPause "Step '${step}' finished"
   613             fi
   614         fi
   615         prev_step="${step}"
   616     done
   617 fi
   618 
   619 CT_DoEnd INFO
   620 
   621 # From now-on, it can become impossible to log any time, because
   622 # either we're compressing the log file, or it can become RO any
   623 # moment... Consign all ouptut to oblivion...
   624 CT_DoLog INFO "Finishing installation (may take a few seconds)..."
   625 exec >/dev/null 2>&1
   626 
   627 [ "${CT_LOG_FILE_COMPRESS}" = y ] && bzip2 -9 "${CT_LOG_FILE}"
   628 [ "${CT_INSTALL_DIR_RO}" = "y"  ] && chmod -R a-w "${CT_INSTALL_DIR}"
   629 [ "${CT_TEST_SUITE}" = "y" ] && chmod -R u+w "${CT_TEST_SUITE_DIR}"
   630 
   631 trap - EXIT