Simplify kernel config file need.
Don't build a default config file when not needed.
2 # Copyright 2007 Yann E. MORIN
3 # Licensed under the GPL v2. See COPYING in the root of this package.
5 # This is the main entry point to crosstool
7 # - download, extract and patch the toolchain components
8 # - build and install each components in turn
9 # - and eventually test the resulting toolchain
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 checks for needed tools. It eventually calls the main build script.
15 # User must set CT_TOP_DIR in is environment!
16 # Once we can build out-of-tree, then this will have to go.
17 if [ -z "${CT_TOP_DIR}" -o ! -d "${CT_TOP_DIR}" ]; then
18 # We don't have the functions right now, because we don't have CT_TOP_DIR.
19 # Do the print stuff by hand:
20 echo "CT_TOP_DIR not set. You must set CT_TOP_DIR to the top directory where crosstool is installed."
24 # Parse the common functions
25 . "${CT_TOP_DIR}/scripts/functions"
27 CT_STAR_DATE=`CT_DoDate +%s%N`
28 CT_STAR_DATE_HUMAN=`CT_DoDate +%Y%m%d.%H%M%S`
30 # Log to a temporary file until we have built our environment
31 CT_ACTUAL_LOG_FILE="${CT_TOP_DIR}/$$.log"
33 # CT_TOP_DIR should be an absolute path.
34 CT_TOP_DIR="`CT_MakeAbsolutePath \"${CT_TOP_DIR}\"`"
36 # Parse the configuration file
37 CT_TestOrAbort "Configuration file not found. Please create one." -f "${CT_TOP_DIR}/.config"
38 . "${CT_TOP_DIR}/.config"
40 # The progress bar indicator is asked for
41 if [ "${CT_LOG_PROGRESS_BAR}" = "y" ]; then
43 [ $((cpt/5)) -eq 0 ] && echo -en "/"
44 [ $((cpt/5)) -eq 1 ] && echo -en "-"
45 [ $((cpt/5)) -eq 2 ] && echo -en "\\"
46 [ $((cpt/5)) -eq 3 ] && echo -en "|"
50 CT_PROG_BAR=_CT_PROG_BAR
51 export -f _CT_PROG_BAR
56 # Apply the color scheme if needed
57 if [ "${CT_LOG_USE_COLORS}" = "y" ]; then
58 CT_ERROR_COLOR="${_A_NOR}${_A_BRI}${_F_RED}"
59 CT_WARN_COLOR="${_A_NOR}${_A_BRI}${_F_YEL}"
60 CT_INFO_COLOR="${_A_NOR}${_A_BRI}${_F_GRN}"
61 CT_EXTRA_COLOR="${_A_NOR}${_A_DIM}${_F_GRN}"
62 CT_DEBUG_COLOR="${_A_NOR}${_A_DIM}${_F_WHI}"
63 CT_NORMAL_COLOR="${_A_NOR}"
73 # Yes! We can do full logging from now on!
74 CT_DoLog INFO "Build started ${CT_STAR_DATE_HUMAN}"
77 renice ${CT_NICE} $$ |CT_DoLog DEBUG
79 # Some sanity checks in the environment and needed tools
80 CT_DoLog INFO "Checking environment sanity"
82 # Enable known ordering of files in directory listings:
83 CT_Test "Crosstool-NG might not work as expected with LANG=\"${LANG}\"" -n "${LANG}"
84 case "${LC_COLLATE},${LC_ALL}" in
85 # These four combinations are known to sort files in the correct order:
90 # Anything else is destined to be borked if not gracefuly handled:
91 *) CT_DoLog WARN "Either LC_COLLATE=\"${LC_COLLATE}\" or LC_ALL=\"${LC_ALL}\" is not supported."
92 export LC_ALL=`locale -a |egrep "^(fr_FR|en_US)" |head -n 1`
93 CT_TestOrAbort "Neither en_US* nor fr_FR* locales found on your system." -n "${LC_ALL}"
94 CT_DoLog WARN "Forcing to known working LC_ALL=\"${LC_ALL}\"."
98 # Other environment sanity checks
99 CT_TestAndAbort "Don't set LD_LIBRARY_PATH. It screws up the build." -n "${LD_LIBRARY_PATH}"
100 CT_TestAndAbort "Don't set CFLAGS. It screws up the build." -n "${CFLAGS}"
101 CT_TestAndAbort "Don't set CXXFLAGS. It screws up the build." -n "${CXXFLAGS}"
102 CT_Test "GREP_OPTIONS screws up the build. Resetting." -n "${GREP_OPTIONS}"
109 CT_DoStep DEBUG "Dumping crosstool-NG configuration"
110 cat ${CT_TOP_DIR}/.config |egrep '^(# |)CT_' |CT_DoLog DEBUG
113 CT_DoLog INFO "Building environment variables"
115 # Target triplet: CT_TARGET needs a little love:
116 CT_DoBuildTargetTriplet
118 # Now, build up the variables from the user-configured options.
119 CT_KERNEL_FILE="${CT_KERNEL}-${CT_KERNEL_VERSION}"
120 CT_BINUTILS_FILE="binutils-${CT_BINUTILS_VERSION}"
121 if [ "${CT_CC_USE_CORE}" != "y" ]; then
122 CT_CC_CORE="${CT_CC}"
123 CT_CC_CORE_VERSION="${CT_CC_VERSION}"
124 CT_CC_CORE_EXTRA_CONFIG="${CT_CC_EXTRA_CONFIG}"
126 CT_CC_CORE_FILE="${CT_CC_CORE}-${CT_CC_CORE_VERSION}"
127 CT_CC_FILE="${CT_CC}-${CT_CC_VERSION}"
128 CT_LIBC_FILE="${CT_LIBC}-${CT_LIBC_VERSION}"
129 [ "${CT_ARCH_FLOAT_SW_LIBFLOAT}" = "y" ] && CT_LIBFLOAT_FILE="libfloat-990616"
131 # Kludge: If any of the configured options needs CT_TARGET or CT_TOP_DIR,
132 # then rescan the options file now:
133 . "${CT_TOP_DIR}/.config"
135 # Some more sanity checks now that we have all paths set up
136 case "${CT_TARBALLS_DIR},${CT_SRC_DIR},${CT_BUILD_DIR},${CT_PREFIX_DIR},${CT_INSTALL_DIR}" in
137 *" "*) CT_Abort "Don't use spaces in paths, it breaks things.";;
140 # Note: we'll always install the core compiler in its own directory, so as to
141 # not mix the two builds: core and final. Anyway, its generic, wether we use
142 # a different compiler as core, or not.
143 CT_CC_CORE_PREFIX_DIR="${CT_BUILD_DIR}/${CT_CC}-core"
145 # Good, now grab a bit of informations on the system we're being run,
146 # just in case something goes awok, and it's not our fault:
147 CT_SYS_HOSTNAME=`hostname -f 2>/dev/null || true`
148 # Hmmm. Some non-DHCP-enabled machines do not have an FQDN... Fall back to node name.
149 CT_SYS_HOSTNAME="${CT_SYS_HOSTNAME:-`uname -n`}"
150 CT_SYS_KERNEL=`uname -s`
151 CT_SYS_REVISION=`uname -r`
152 # MacOS X lacks '-o' :
153 CT_SYS_OS=`uname -o || echo "Unknown (maybe MacOS-X)"`
154 CT_SYS_MACHINE=`uname -m`
155 CT_SYS_PROCESSOR=`uname -p`
156 CT_SYS_USER="`id -un`"
157 CT_SYS_DATE=`CT_DoDate +%Y%m%d.%H%M%S`
158 CT_SYS_GCC=`gcc -dumpversion`
159 CT_TOOLCHAIN_ID="crosstool-${CT_VERSION} build ${CT_SYS_DATE} by ${CT_SYS_USER}@${CT_SYS_HOSTNAME} for ${CT_TARGET}"
161 # Check now if we can write to the destination directory:
162 if [ -d "${CT_INSTALL_DIR}" ]; then
163 CT_TestAndAbort "Destination directory \"${CT_INSTALL_DIR}\" is not removable" ! -w `dirname "${CT_INSTALL_DIR}"`
166 # Get rid of pre-existing installed toolchain and previous build directories.
167 # We need to do that _before_ we can safely log, because the log file will
168 # most probably be in the toolchain directory.
169 if [ -d "${CT_INSTALL_DIR}" ]; then
170 mv "${CT_INSTALL_DIR}" "${CT_INSTALL_DIR}.$$"
171 nohup rm -rf "${CT_INSTALL_DIR}.$$" >/dev/null 2>&1 &
173 if [ -d "${CT_BUILD_DIR}" ]; then
174 mv "${CT_BUILD_DIR}" "${CT_BUILD_DIR}.$$"
175 nohup rm -rf "${CT_BUILD_DIR}.$$" >/dev/null 2>&1 &
177 if [ "${CT_FORCE_EXTRACT}" = "y" -a -d "${CT_SRC_DIR}" ]; then
178 mv "${CT_SRC_DIR}" "${CT_SRC_DIR}.$$"
179 nohup rm -rf "${CT_SRC_DIR}.$$" >/dev/null 2>&1 &
181 mkdir -p "${CT_INSTALL_DIR}"
182 mkdir -p "${CT_BUILD_DIR}"
183 mkdir -p "${CT_TARBALLS_DIR}"
184 mkdir -p "${CT_SRC_DIR}"
186 # Make all path absolute, it so much easier!
187 # Now we have had the directories created, we even will get rid of embedded .. in paths:
188 CT_SRC_DIR="`CT_MakeAbsolutePath \"${CT_SRC_DIR}\"`"
189 CT_TARBALLS_DIR="`CT_MakeAbsolutePath \"${CT_TARBALLS_DIR}\"`"
191 # Redirect log to the actual log file now we can
192 # It's quite understandable that the log file will be installed in the install
193 # directory, so we must first ensure it exists and is writeable (above) before
195 case "${CT_LOG_TO_FILE},${CT_LOG_FILE}" in
196 ,*) rm -f "${CT_ACTUAL_LOG_FILE}"
197 CT_ACTUAL_LOG_FILE=/dev/null
199 y,/*) mkdir -p "`dirname \"${CT_LOG_FILE}\"`"
200 mv "${CT_ACTUAL_LOG_FILE}" "${CT_LOG_FILE}"
201 CT_ACTUAL_LOG_FILE="${CT_LOG_FILE}"
203 y,*) mkdir -p "`pwd`/`dirname \"${CT_LOG_FILE}\"`"
204 mv "${CT_ACTUAL_LOG_FILE}" "`pwd`/${CT_LOG_FILE}"
205 CT_ACTUAL_LOG_FILE="`pwd`/${CT_LOG_FILE}"
209 # Determine build system if not set by the user
210 CT_Test "You did not specify the build system. Guessing." -z "${CT_BUILD}"
211 CT_BUILD="`${CT_TOP_DIR}/tools/config.sub \"${CT_BUILD:-\`${CT_TOP_DIR}/tools/config.guess\`}\"`"
213 # Arrange paths depending on wether we use sys-root or not.
214 if [ "${CT_USE_SYSROOT}" = "y" ]; then
215 CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}/sys-root"
216 CT_HEADERS_DIR="${CT_SYSROOT_DIR}/usr/include"
217 BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
218 CC_CORE_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
219 CC_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
221 # glibc's prefix must be exactly /usr, else --with-sysroot'd gcc will get
222 # confused when $sysroot/usr/include is not present.
223 # Note: --prefix=/usr is magic!
224 # See http://www.gnu.org/software/libc/FAQ.html#s-2.2
226 # plain old way. All libraries in prefix/target/lib
227 CT_SYSROOT_DIR="${CT_PREFIX_DIR}/${CT_TARGET}"
228 CT_HEADERS_DIR="${CT_SYSROOT_DIR}/include"
229 # hack! Always use --with-sysroot for binutils.
230 # binutils 2.14 and later obey it, older binutils ignore it.
231 # Lets you build a working 32->64 bit cross gcc
232 BINUTILS_SYSROOT_ARG="--with-sysroot=${CT_SYSROOT_DIR}"
233 # Use --with-headers, else final gcc will define disable_glibc while
234 # building libgcc, and you'll have no profiling
235 CC_CORE_SYSROOT_ARG="--without-headers"
236 CC_SYSROOT_ARG="--with-headers=${CT_HEADERS_DIR}"
237 LIBC_SYSROOT_ARG="prefix="
240 # Prepare the 'lib' directories in sysroot, else the ../lib64 hack used by
241 # 32 -> 64 bit crosscompilers won't work, and build of final gcc will fail with
242 # "ld: cannot open crti.o: No such file or directory"
243 mkdir -p "${CT_SYSROOT_DIR}/lib"
244 mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
246 # Canadian-cross are really picky on the way they are built. Tweak the values.
247 if [ "${CT_CANADIAN}" = "y" ]; then
248 # Arrange so that gcc never, ever think that build system == host system
249 CT_CANADIAN_OPT="--build=`echo \"${CT_BUILD}\" |sed -r -e 's/-/-build_/'`"
250 # We shall have a compiler for this target!
253 CT_HOST="${CT_BUILD}"
255 # Add the target toolchain in the path so that we can build the C library
256 export PATH="${CT_PREFIX_DIR}/bin:${CT_CC_CORE_PREFIX_DIR}/bin:${PATH}"
259 # Modify GCC_HOST to never be equal to $BUILD or $TARGET
260 # This strange operation causes gcc to always generate a cross-compiler
261 # even if the build machine is the same kind as the host.
262 # This is why CC has to be set when doing a canadian cross; you can't find a
263 # host compiler by appending -gcc to our whacky $GCC_HOST
264 # Kludge: it is reported that the above causes canadian crosses with cygwin
265 # hosts to fail, so avoid it just in that one case. It would be cleaner to
266 # just move this into the non-canadian case above, but I'm afraid that might
267 # cause some configure script somewhere to decide that since build==host, they
268 # could run host binaries.
269 # (Copied almost as-is from original crosstool):
270 case "${CT_KERNEL},${CT_CANADIAN}" in
272 *) CT_HOST="`echo \"${CT_HOST}\" |sed -r -e 's/-/-host_/;'`";;
275 # Ah! Recent versions of binutils need some of the build and/or host system
276 # (read CT_BUILD and CT_HOST) tools to be accessible (ar is but an example).
278 CT_DoLog EXTRA "Making build system tools available"
279 mkdir -p "${CT_PREFIX_DIR}/bin"
281 ln -s "`which ${tool}`" "${CT_PREFIX_DIR}/bin/${CT_BUILD}-${tool}"
282 ln -s "`which ${tool}`" "${CT_PREFIX_DIR}/bin/${CT_HOST}-${tool}"
285 # Ha. cygwin host have an .exe suffix (extension) for executables.
286 [ "${CT_KERNEL}" = "cygwin" ] && EXEEXT=".exe" || EXEEXT=""
288 # Transform the ARCH into a kernel-understandable ARCH
290 x86) CT_KERNEL_ARCH=i386;;
291 ppc) CT_KERNEL_ARCH=powerpc;;
292 *) CT_KERNEL_ARCH="${CT_ARCH}";;
295 # Build up the TARGET_CFLAGS from user-provided options
296 # Override with user-specified CFLAGS
297 [ -n "${CT_ARCH_CPU}" ] && CT_TARGET_CFLAGS="-mcpu=${CT_ARCH_CPU} ${CT_TARGET_CFLAGS}"
298 [ -n "${CT_ARCH_TUNE}" ] && CT_TARGET_CFLAGS="-mtune=${CT_ARCH_TUNE} ${CT_TARGET_CFLAGS}"
299 [ -n "${CT_ARCH_ARCH}" ] && CT_TARGET_CFLAGS="-march=${CT_ARCH_ARCH} ${CT_TARGET_CFLAGS}"
300 [ -n "${CT_ARCH_FPU}" ] && CT_TARGET_CFLAGS="-mfpu=${CT_ARCH_FPU} ${CT_TARGET_CFLAGS}"
304 [ "${CT_USE_PIPES}" = "y" ] && CT_CFLAGS_FOR_HOST="${CT_CFLAGS_FOR_HOST} -pipe"
306 # And help make go faster
308 [ ${CT_PARALLEL_JOBS} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -j${CT_PARALLEL_JOBS}"
309 [ ${CT_LOAD} -ne 0 ] && PARALLELMFLAGS="${PARALLELMFLAGS} -l${CT_LOAD}"
311 CT_DoStep EXTRA "Dumping internal crosstool-NG configuration"
312 CT_DoLog EXTRA "Building a toolchain for:"
313 CT_DoLog EXTRA " build = ${CT_BUILD}"
314 CT_DoLog EXTRA " host = ${CT_HOST}"
315 CT_DoLog EXTRA " target = ${CT_TARGET}"
316 set |egrep '^CT_.+=' |sort |CT_DoLog DEBUG
319 # Include sub-scripts instead of calling them: that way, we do not have to
320 # export any variable, nor re-parse the configuration and functions files.
321 . "${CT_TOP_DIR}/scripts/build/kernel_${CT_KERNEL}.sh"
322 . "${CT_TOP_DIR}/scripts/build/binutils.sh"
323 . "${CT_TOP_DIR}/scripts/build/libc_libfloat.sh"
324 . "${CT_TOP_DIR}/scripts/build/libc_${CT_LIBC}.sh"
325 . "${CT_TOP_DIR}/scripts/build/cc_core_${CT_CC_CORE}.sh"
326 . "${CT_TOP_DIR}/scripts/build/cc_${CT_CC}.sh"
328 # Now for the job by itself. Go have a coffee!
329 if [ "${CT_NO_DOWNLOAD}" != "y" ]; then
330 CT_DoStep INFO "Retrieving needed toolchain components' tarballs"
340 if [ "${CT_ONLY_DOWNLOAD}" != "y" ]; then
341 if [ "${CT_FORCE_EXTRACT}" = "y" ]; then
342 mv "${CT_SRC_DIR}" "${CT_SRC_DIR}.$$"
343 nohup rm -rf "${CT_SRC_DIR}.$$" >/dev/null 2>&1
345 CT_DoStep INFO "Extracting and patching toolchain components"
354 if [ "${CT_ONLY_EXTRACT}" != "y" ]; then
356 do_kernel_check_config
368 if [ -n "${CT_TARGET_ALIAS}" ]; then
369 CT_DoLog EXTRA "Creating symlinks from \"${CT_TARGET}-*\" to \"${CT_TARGET_ALIAS}-*\""
370 CT_Pushd "${CT_PREFIX_DIR}/bin"
371 for t in "${CT_TARGET}-"*; do
372 _t="`echo \"$t\" |sed -r -e 's/^'\"${CT_TARGET}\"'-/'\"${CT_TARGET_ALIAS}\"'-/;'`"
373 CT_DoLog DEBUG "Linking \"${_t}\" -> \"${t}\""
379 if [ "${CT_REMOVE_DOCS}" = "y" ]; then
380 CT_DoLog INFO "Removing installed documentation"
381 rm -rf "${CT_PREFIX_DIR}/"{man,info}
384 CT_STOP_DATE=`CT_DoDate +%s%N`
385 CT_STOP_DATE_HUMAN=`CT_DoDate +%Y%m%d.%H%M%S`
386 CT_DoLog INFO "Build completed at ${CT_STOP_DATE_HUMAN}"
387 elapsed=$((CT_STOP_DATE-CT_STAR_DATE))
388 elapsed_min=$((elapsed/(60*1000*1000*1000)))
389 elapsed_sec=`printf "%02d" $(((elapsed%(60*1000*1000*1000))/(1000*1000*1000)))`
390 elapsed_csec=`printf "%02d" $(((elapsed%(1000*1000*1000))/(10*1000*1000)))`
391 CT_DoLog INFO "(elapsed: ${elapsed_min}:${elapsed_sec}.${elapsed_csec})"
393 # Restore a 'normal' color setting
394 echo -en "${CT_NORMAL_COLOR}"