# -*- mode: sh; tab-width: 4 -*- # vi: ts=4:sw=4:sts=4:et # This file contains some usefull common functions # Copyright 2007 Yann E. MORIN # Licensed under the GPL v2. See COPYING in the root of this package # Prepare the fault handler CT_OnError() { local ret=$? local result local old_trap local intro local file line func local step step_depth # To avoid printing the backtace for each sub-shell # up to the top-level, just remember we've dumped it if [ ! -f "${CT_WORK_DIR}/backtrace" ]; then [ -d "${CT_WORK_DIR}" ] && touch "${CT_WORK_DIR}/backtrace" # Print steps backtrace step_depth=${CT_STEP_COUNT} CT_STEP_COUNT=1 # To have a zero-indentation CT_DoLog ERROR "" CT_DoLog ERROR ">>" intro="Build failed" for((step=step_depth; step>0; step--)); do CT_DoLog ERROR ">> ${intro} in step '${CT_STEP_MESSAGE[${step}]}'" intro=" called" done # Print functions backtrace intro="Error happened in" CT_DoLog ERROR ">>" for((depth=1; ${BASH_LINENO[$((${depth}-1))]}>0; depth++)); do file="${BASH_SOURCE[${depth}]#${CT_LIB_DIR}/}" func="${FUNCNAME[${depth}]}" line="@${BASH_LINENO[${depth}-1]:-?}" CT_DoLog ERROR ">> ${intro}: ${func}[${file}${line}]" intro=" called from" done # If the user asked for interactive debugging, dump him/her to a shell if [ "${CT_DEBUG_INTERACTIVE}" = "y" ]; then # We do not want this sub-shell exit status to be caught, because # it is absolutely legit that it exits with non-zero. # Save the trap handler to restore it after our debug-shell old_trap="$(trap -p ERR)" trap -- ERR ( exec >&6 2>&7 <&8 printf "\r \n\nCurrent command" if [ -n "${cur_cmd}" ]; then printf ":\n %s\n" "${cur_cmd}" else printf " (unknown), " fi printf "exited with error code: %d\n" ${ret} printf "Please fix it up and finish by exiting the shell with one of these values:\n" printf " 1 fixed, continue with next build command\n" if [ -n "${cur_cmd}" ]; then printf " 2 repeat this build command\n" fi printf " 3 abort build\n\n" while true; do ${bash} --rcfile <(printf "PS1='ct-ng:\w> '\nPROMPT_COMMAND=''\n") -i result=$? case $result in 1) printf "\nContinuing past the failed command.\n\n" break ;; 2) if [ -n "${cur_cmd}" ]; then printf "\nRe-trying last command.\n\n" break fi ;; 3) break;; esac printf "\nPlease exit with one of these values:\n" printf " 1 fixed, continue with next build command\n" if [ -n "${cur_cmd}" ]; then printf " 2 repeat this build command\n" fi printf " 3 abort build\n" done exit $result ) result=$? # Restore the trap handler eval "${old_trap}" case "${result}" in 1) rm -f "${CT_WORK_DIR}/backtrace"; touch "${CT_BUILD_DIR}/skip"; return;; 2) rm -f "${CT_WORK_DIR}/backtrace"; touch "${CT_BUILD_DIR}/repeat"; return;; # 3 is an abort, continue... esac fi fi # And finally, in top-level shell, print some hints if [ ${BASH_SUBSHELL} -eq 0 ]; then # Help diagnose the error CT_STEP_COUNT=1 # To have a zero-indentation CT_DoLog ERROR ">>" if [ "${CT_LOG_TO_FILE}" = "y" ]; then CT_DoLog ERROR ">> For more info on this error, look at the file: '${tmp_log_file#${CT_TOP_DIR}/}'" fi CT_DoLog ERROR ">> There is a list of known issues, some with workarounds, in:" CT_DoLog ERROR ">> '${CT_DOC_DIR#${CT_TOP_DIR}/}/B - Known issues.txt'" CT_DoLog ERROR "" CT_DoEnd ERROR rm -f "${CT_WORK_DIR}/backtrace" fi exit $ret } # Install the fault handler trap CT_OnError ERR # Inherit the fault handler in subshells and functions set -E # Make pipes fail on the _first_ failed command # Not supported on bash < 3.x, but we need it, so drop the obsoleting bash-2.x set -o pipefail # Don't hash commands' locations, and search every time it is requested. # This is slow, but needed because of the static/shared core gcc which shall # always match to shared if it exists, and only fallback to static if the # shared is not found set +o hashall # Log policy: # - first of all, save stdout so we can see the live logs: fd #6 # (also save stdin and stderr for use by CT_DEBUG_INTERACTIVE) exec 6>&1 7>&2 8<&0 # - then point stdout to the log file tmp_log_file="${CT_TOP_DIR}/build.log" rm -f "${tmp_log_file}" exec >>"${tmp_log_file}" # The different log levels: CT_LOG_LEVEL_ERROR=0 CT_LOG_LEVEL_WARN=1 CT_LOG_LEVEL_INFO=2 CT_LOG_LEVEL_EXTRA=3 CT_LOG_LEVEL_CFG=4 CT_LOG_LEVEL_FILE=5 CT_LOG_LEVEL_STATE=6 CT_LOG_LEVEL_ALL=7 CT_LOG_LEVEL_DEBUG=8 # Make it easy to use \n and ! CR=$(printf "\n") BANG='!' # A function to log what is happening # Different log level are available: # - ERROR: A serious, fatal error occurred # - WARN: A non fatal, non serious error occurred, take your responsbility with the generated build # - INFO: Informational messages # - EXTRA: Extra informational messages # - CFG: Output of various "./configure"-type scripts # - FILE: File / archive unpacking. # - STATE: State save & restore # - ALL: Component's build messages # - DEBUG: Internal debug messages # Usage: CT_DoLog <level> [message] # If message is empty, then stdin will be logged. CT_DoLog() { local max_level LEVEL level cur_l cur_L local l eval max_level="\${CT_LOG_LEVEL_${CT_LOG_LEVEL_MAX}}" # Set the maximum log level to DEBUG if we have none [ -z "${max_level}" ] && max_level=${CT_LOG_LEVEL_DEBUG} LEVEL="$1"; shift eval level="\${CT_LOG_LEVEL_${LEVEL}}" if [ $# -eq 0 ]; then cat - else echo -e "${*}" fi |( IFS="${CR}" # We want the full lines, even leading spaces _prog_bar_cpt=0 _prog_bar[0]='/' _prog_bar[1]='-' _prog_bar[2]='\' _prog_bar[3]='|' indent=$((2*CT_STEP_COUNT)) while read line; do case "${CT_LOG_SEE_TOOLS_WARN},${line}" in y,*"warning:"*) cur_L=WARN; cur_l=${CT_LOG_LEVEL_WARN};; y,*"WARNING:"*) cur_L=WARN; cur_l=${CT_LOG_LEVEL_WARN};; *"error:"*) cur_L=ERROR; cur_l=${CT_LOG_LEVEL_ERROR};; *"make["*"]: *** ["*) cur_L=ERROR; cur_l=${CT_LOG_LEVEL_ERROR};; *) cur_L="${LEVEL}"; cur_l="${level}";; esac # There will always be a log file (stdout, fd #1), be it /dev/null printf "[%-5s]%*s%s%s\n" "${cur_L}" "${indent}" " " "${line}" if [ ${cur_l} -le ${max_level} ]; then # Only print to console (fd #6) if log level is high enough. printf "${CT_LOG_PROGRESS_BAR:+\r}[%-5s]%*s%s%s\n" "${cur_L}" "${indent}" " " "${line}" >&6 fi if [ "${CT_LOG_PROGRESS_BAR}" = "y" ]; then printf "\r[%02d:%02d] %s " $((SECONDS/60)) $((SECONDS%60)) "${_prog_bar[$((_prog_bar_cpt/10))]}" >&6 _prog_bar_cpt=$(((_prog_bar_cpt+1)%40)) fi done ) return 0 } # Execute an action, and log its messages # It is possible to even log local variable assignments (a-la: var=val ./cmd opts) # Usage: CT_DoExecLog <level> [VAR=val...] <command> [parameters...] CT_DoExecLog() { local level="$1" local cur_cmd local ret shift ( for i in "$@"; do cur_cmd+="'${i}' " done while true; do case "${1}" in *=*) eval export "'${1}'"; shift;; *) break;; esac done # This while-loop goes hand-in-hand with the ERR trap handler: # - if the command terminates successfully, then we hit the break # statement, and we exit the loop # - if the command terminates in error, then the ERR handler kicks # in, then: # - if the user did *not* ask for interactive debugging, the ERR # handler exits, and we hit the end of the sub-shell # - if the user did ask for interactive debugging, the ERR handler # spawns a shell. Upon termination of this shell, the ERR handler # examines the exit status of the shell: # - if 1, the ERR handler returns; then we hit the else statement, # then the break, and we exit the 'while' loop, to continue the # build; # - if 2, the ERR handler touches the repeat file, and returns; # then we hit the if statement, and we loop for one more # iteration; # - if 3, the ERR handler exits with the command's exit status, # and we're dead; # - for any other exit status of the shell, the ERR handler # prints an informational message, and respawns the shell # # This allows a user to get an interactive shell that has the same # environment (PATH and so on) that the failed command was ran with. while true; do rm -f "${CT_BUILD_DIR}/repeat" CT_DoLog DEBUG "==> Executing: ${cur_cmd}" "${@}" 2>&1 |CT_DoLog "${level}" ret="${?}" if [ -f "${CT_BUILD_DIR}/repeat" ]; then rm -f "${CT_BUILD_DIR}/repeat" continue elif [ -f "${CT_BUILD_DIR}/skip" ]; then rm -f "${CT_BUILD_DIR}/skip" ret=0 break else break fi done exit ${ret} ) # Catch failure of the sub-shell [ $? -eq 0 ] } # Tail message to be logged whatever happens # Usage: CT_DoEnd <level> CT_DoEnd() { local level="$1" CT_STOP_DATE=$(CT_DoDate +%s%N) CT_STOP_DATE_HUMAN=$(CT_DoDate +%Y%m%d.%H%M%S) if [ "${level}" != "ERROR" ]; then CT_DoLog "${level:-INFO}" "Build completed at ${CT_STOP_DATE_HUMAN}" fi elapsed=$((CT_STOP_DATE-CT_STAR_DATE)) elapsed_min=$((elapsed/(60*1000*1000*1000))) elapsed_sec=$(printf "%02d" $(((elapsed%(60*1000*1000*1000))/(1000*1000*1000)))) elapsed_csec=$(printf "%02d" $(((elapsed%(1000*1000*1000))/(10*1000*1000)))) CT_DoLog ${level:-INFO} "(elapsed: ${elapsed_min}:${elapsed_sec}.${elapsed_csec})" } # Remove entries referring to . and other relative paths # Usage: CT_SanitizePath CT_SanitizePath() { local new local p local IFS=: for p in $PATH; do # Only accept absolute paths; # Note: as a special case the empty string in PATH is equivalent to . if [ -n "${p}" -a -z "${p%%/*}" ]; then new="${new}${new:+:}${p}" fi done PATH="${new}" } # Sanitise the directory name contained in the variable passed as argument: # - remove duplicate / # Usage: CT_SanitiseVarDir CT_PREFIX_DIR CT_SanitiseVarDir() { local var local old_dir local new_dir for var in "$@"; do eval "old_dir=\"\${${var}}\"" new_dir="$( printf "${old_dir}" \ |${sed} -r -e 's:/+:/:g;' \ )" eval "${var}=\"${new_dir}\"" CT_DoLog DEBUG "Sanitised '${var}': '${old_dir}' -> '${new_dir}'" done } # Abort the execution with an error message # Usage: CT_Abort <message> CT_Abort() { CT_DoLog ERROR "$1" false } # Test a condition, and print a message if satisfied # Usage: CT_Test <message> <tests> CT_Test() { local ret local m="$1" shift CT_DoLog DEBUG "Testing '! ( $* )'" test "$@" && CT_DoLog WARN "$m" return 0 } # Test a condition, and abort with an error message if satisfied # Usage: CT_TestAndAbort <message> <tests> CT_TestAndAbort() { local m="$1" shift CT_DoLog DEBUG "Testing '! ( $* )'" test "$@" && CT_Abort "$m" return 0 } # Test a condition, and abort with an error message if not satisfied # Usage: CT_TestAndAbort <message> <tests> CT_TestOrAbort() { local m="$1" shift CT_DoLog DEBUG "Testing '$*'" test "$@" || CT_Abort "$m" return 0 } # Test the presence of a tool, or abort if not found # Usage: CT_HasOrAbort <tool> CT_HasOrAbort() { CT_TestAndAbort "'${1}' not found and needed for successful toolchain build." -z "$(CT_Which "${1}")" return 0 } # Search a program: wrap "which" for those system where "which" # verbosely says there is no match (such as on Mandriva). # Usage: CT_Which <filename> CT_Which() { which "$1" 2>/dev/null || true } # Get current date with nanosecond precision # On those system not supporting nanosecond precision, faked with rounding down # to the highest entire second # Usage: CT_DoDate <fmt> CT_DoDate() { date "$1" |${sed} -r -e 's/%?N$/000000000/;' } CT_STEP_COUNT=1 CT_STEP_MESSAGE[${CT_STEP_COUNT}]="(top-level)" # Memorise a step being done so that any error is caught # Usage: CT_DoStep <loglevel> <message> CT_DoStep() { local start=$(CT_DoDate +%s%N) CT_DoLog "$1" "=================================================================" CT_DoLog "$1" "$2" CT_STEP_COUNT=$((CT_STEP_COUNT+1)) CT_STEP_LEVEL[${CT_STEP_COUNT}]="$1"; shift CT_STEP_START[${CT_STEP_COUNT}]="${start}" CT_STEP_MESSAGE[${CT_STEP_COUNT}]="$1" return 0 } # End the step just being done # Usage: CT_EndStep CT_EndStep() { local stop=$(CT_DoDate +%s%N) local duration=$(printf "%032d" $((stop-${CT_STEP_START[${CT_STEP_COUNT}]})) \ |${sed} -r -e 's/([[:digit:]]{2})[[:digit:]]{7}$/\.\1/; s/^0+//; s/^\./0\./;' ) local elapsed=$(printf "%02d:%02d" $((SECONDS/60)) $((SECONDS%60))) local level="${CT_STEP_LEVEL[${CT_STEP_COUNT}]}" local message="${CT_STEP_MESSAGE[${CT_STEP_COUNT}]}" CT_STEP_COUNT=$((CT_STEP_COUNT-1)) CT_DoLog "${level}" "${message}: done in ${duration}s (at ${elapsed})" return 0 } # Pushes into a directory, and pops back CT_Pushd() { CT_DoLog DEBUG "Entering '$1'" pushd "$1" >/dev/null 2>&1 } CT_Popd() { popd >/dev/null 2>&1 } # Create a dir and cd or pushd into it # Usage: CT_mkdir_cd <dir/to/create> # CT_mkdir_pushd <dir/to/create> CT_mkdir_cd() { local dir="${1}" mkdir -p "${dir}" cd "${dir}" } CT_mkdir_pushd() { local dir="${1}" mkdir -p "${dir}" CT_Pushd "${dir}" } # Creates a temporary directory # $1: variable to assign to # Usage: CT_MktempDir foo CT_MktempDir() { # Some mktemp do not allow more than 6 Xs eval "$1"=$(mktemp -q -d "${CT_BUILD_DIR}/tmp.XXXXXX") CT_TestOrAbort "Could not make temporary directory" -n "${!1}" -a -d "${!1}" CT_DoLog DEBUG "Made temporary directory '${!1}'" return 0 } # Removes one or more directories, even if it is read-only, or its parent is # Usage: CT_DoForceRmdir dir [...] CT_DoForceRmdir() { local dir local mode for dir in "${@}"; do [ -d "${dir}" ] || continue case "$CT_SYS_OS" in Linux|CYGWIN*) mode="$(stat -c '%a' "$(dirname "${dir}")")" ;; Darwin|*BSD) mode="$(stat -f '%Lp' "$(dirname "${dir}")")" ;; *) CT_Abort "Unhandled host OS $CT_SYS_OS" ;; esac CT_DoExecLog ALL chmod u+w "$(dirname "${dir}")" CT_DoExecLog ALL chmod -R u+w "${dir}" CT_DoExecLog ALL rm -rf "${dir}" CT_DoExecLog ALL chmod ${mode} "$(dirname "${dir}")" done } # Echoes the specified string on stdout until the pipe breaks. # Doesn't fail # $1: string to echo # Usage: CT_DoYes "" |${make} oldconfig CT_DoYes() { yes "$1" || true } # Add the specified directory to LD_LIBRARY_PATH, and export it # If the specified patch is already present, just export # $1: path to add # $2: add as 'first' or 'last' path, 'first' is assumed if $2 is empty # Usage CT_SetLibPath /some/where/lib [first|last] CT_SetLibPath() { local path="$1" local pos="$2" case ":${LD_LIBRARY_PATH}:" in *:"${path}":*) ;; *) case "${pos}" in last) CT_DoLog DEBUG "Adding '${path}' at end of LD_LIBRARY_PATH" LD_LIBRARY_PATH="${LD_LIBRARY_PATH:+${LD_LIBRARY_PATH}:}${path}" ;; first|"") CT_DoLog DEBUG "Adding '${path}' at start of LD_LIBRARY_PATH" LD_LIBRARY_PATH="${path}${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}" ;; *) CT_Abort "Incorrect position '${pos}' to add '${path}' to LD_LIBRARY_PATH" ;; esac ;; esac CT_DoLog DEBUG "==> LD_LIBRARY_PATH='${LD_LIBRARY_PATH}'" export LD_LIBRARY_PATH } # Build up the list of allowed tarball extensions # Add them in the prefered order; most preferred comes first CT_DoListTarballExt() { if [ "${CT_CONFIGURE_has_xz}" = "y" ]; then printf ".tar.xz\n" fi if [ "${CT_CONFIGURE_has_lzma}" = "y" \ -o "${CT_CONFIGURE_has_xz}" = "y" ]; then printf ".tar.lzma\n" fi printf ".tar.bz2\n" printf ".tar.gz\n.tgz\n" printf ".tar\n" printf ".zip\n" } # Get the file name extension of a component # Usage: CT_GetFileExtension <component_name-component_version> [extension] # If found, echoes the extension to stdout, and return 0 # If not found, echoes nothing on stdout, and return !0. CT_GetFileExtension() { local ext local file="$1" shift local first_ext="$1" # we need to also check for an empty extension for those very # peculiar components that don't have one (such as sstrip from # buildroot). for ext in ${first_ext} $(CT_DoListTarballExt) /.git ''; do if [ -e "${CT_TARBALLS_DIR}/${file}${ext}" -o -L "${CT_TARBALLS_DIR}/${file}${ext}" ]; then echo "${ext}" exit 0 fi done exit 1 } # Try to retrieve the specified URL (HTTP or FTP) # Usage: CT_DoGetFile <URL> # This functions always returns true (0), as it can be legitimate not # to find the requested URL (think about snapshots, different layouts # for different gcc versions, etc...). CT_DoGetFile() { local url="${1}" local dest="${CT_TARBALLS_DIR}/${url##*/}" local tmp="${dest}.tmp-dl" # Remove potential left-over from a previous run rm -f "${tmp}" # We also retry a few times, in case there is a transient error (eg. behind # a dynamic IP that changes during the transfer...) # With automated download as we are doing, it can be very dangerous to # continue the downloads. It's far better to simply overwrite the # destination file. # Some company networks have firewalls to connect to the internet, but it's # not easy to detect them, so force a global ${CT_CONNECT_TIMEOUT}-second # timeout. if [ ${CT_CONNECT_TIMEOUT} = -1 ]; then T= else T="-T ${CT_CONNECT_TIMEOUT}" fi if CT_DoExecLog ALL wget --passive-ftp --tries=3 -nc \ --progress=dot:binary \ ${T} \ -O "${tmp}" \ "${url}" then # Success, we got it, good! mv "${tmp}" "${dest}" CT_DoLog DEBUG "Got it from: \"${url}\"" else # Woops... rm -f "${tmp}" CT_DoLog DEBUG "Not at this location: \"${url}\"" fi } # This function tries to retrieve a tarball form a local directory # Usage: CT_GetLocal <basename> [.extension] CT_GetLocal() { local basename="$1" local first_ext="$2" local ext # Do we already have it in *our* tarballs dir? if ext="$( CT_GetFileExtension "${basename}" ${first_ext} )"; then CT_DoLog DEBUG "Already have '${basename}'" return 0 fi if [ -n "${CT_LOCAL_TARBALLS_DIR}" ]; then CT_DoLog DEBUG "Trying to retrieve an already downloaded copy of '${basename}'" # We'd rather have a bzip2'ed tarball, then gzipped tarball, plain tarball, # or, as a failover, a file without extension. for ext in ${first_ext} $(CT_DoListTarballExt) ''; do CT_DoLog DEBUG "Trying '${CT_LOCAL_TARBALLS_DIR}/${basename}${ext}'" if [ -r "${CT_LOCAL_TARBALLS_DIR}/${basename}${ext}" -a \ "${CT_FORCE_DOWNLOAD}" != "y" ]; then CT_DoLog DEBUG "Got '${basename}' from local storage" CT_DoExecLog ALL ln -s "${CT_LOCAL_TARBALLS_DIR}/${basename}${ext}" "${CT_TARBALLS_DIR}/${basename}${ext}" return 0 fi done fi return 1 } # This function gets the custom source from either a tarball or directory # Usage: CT_GetCustom <name> <version> <location> CT_GetCustom() { local component_name="$1" local component_version="$2" local component_location="$3" # Some local variables we use to help us figure out what to do local component_location_type="dir" # str: 'file' or 'dir' local component_location_filename="" # filename... if it's a file CT_TestAndAbort \ "${component_name}: Custom location setting is empty" \ -z "${component_location}" CT_TestAndAbort \ "${component_name}: Custom version setting is empty" \ -z "${component_version}" if [ -f "${component_location}" ]; then component_location_type="file" component_location_filename="$(basename ${component_location})" elif [ -d "${component_location}" ]; then # Yes, it's the default, but it rules out the else case in the `if'. component_location_type="dir" # as -d and -f say: it's a <directory|file> and is readable! else CT_Abort "${component_name}: Unable to read ${component_location}, make sure the setting is correct and double check the permissions!" fi if [ "${component_location_type}" = "file" ]; then CT_DoLog EXTRA "Got '${component_location}' from custom location" # We need to know the custom tarball extension, # so we can create a properly-named symlink, which # we use later on in 'extract' case "${component_location}" in *.tar.xz|*.tar.bz2|*.tar.lzma|*.tar.gz|*.tgz|*.tar|*.zip) ;; *) CT_Abort "Unknown extension for custom tarball '${component_location}'" ;; esac [ ! -L "${CT_TARBALLS_DIR}/${component_location_filename}" ] && \ CT_DoExecLog DEBUG ln -sf "${component_location}" \ "${CT_TARBALLS_DIR}/${component_location_filename}" elif [ "${component_location_type}" = "dir" ]; then CT_DoLog EXTRA "Got '${component_location}' from custom location" [ ! -d "${CT_SRC_DIR}/${component_name}-${component_version}" ] && \ CT_DoExecLog DEBUG ln -sf "${component_location}" \ "${CT_SRC_DIR}/${component_name}-${component_version}" # Don't try to extract from source directory, it's extracted! touch "${CT_SRC_DIR}/.${component_name}-${component_version}.extracted" fi # Don't patch a custom source, it's custom! touch "${CT_SRC_DIR}/.${component_name}-${component_version}.patched" } # This function saves the specified to local storage if possible, # and if so, symlinks it for later usage # Usage: CT_SaveLocal </full/path/file.name> CT_SaveLocal() { local file="$1" local basename="${file##*/}" if [ "${CT_SAVE_TARBALLS}" = "y" ]; then CT_DoLog EXTRA "Saving '${basename}' to local storage" # The file may already exist if downloads are forced: remove it first CT_DoExecLog ALL rm -f "${CT_LOCAL_TARBALLS_DIR}/${basename}" CT_DoExecLog ALL mv -f "${file}" "${CT_LOCAL_TARBALLS_DIR}" CT_DoExecLog ALL ln -s "${CT_LOCAL_TARBALLS_DIR}/${basename}" "${file}" fi } # Download the file from one of the URLs passed as argument # Usage: CT_GetFile <basename> [.extension] <url> [url ...] CT_GetFile() { local ext local -a URLS local url local file="$1" local first_ext shift # If next argument starts with a dot, then this is not an URL, # and we can consider that it is a preferred extension. case "$1" in .*) first_ext="$1" shift ;; esac # Does it exist localy? if CT_GetLocal "${file}" ${first_ext}; then return 0 fi # No, it does not... # If not allowed to download from the Internet, don't if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then CT_DoLog DEBUG "Not allowed to download from the Internet, aborting ${file} download" return 1 fi # Try to retrieve the file CT_DoLog EXTRA "Retrieving '${file}'" # Add URLs on the LAN mirror if [ "${CT_USE_MIRROR}" = "y" ]; then CT_TestOrAbort "Please set the mirror base URL" -n "${CT_MIRROR_BASE_URL}" URLS+=( "${CT_MIRROR_BASE_URL}/${file%-*}" ) URLS+=( "${CT_MIRROR_BASE_URL}" ) fi if [ "${CT_FORCE_MIRROR}" != "y" ]; then URLS+=( "${@}" ) fi # Scan all URLs in turn, and try to grab a tarball from there # Do *not* try git trees (ext=/.git), this is handled in a specific # wrapper, below for ext in ${first_ext} $(CT_DoListTarballExt) ''; do # Try all urls in turn for url in "${URLS[@]}"; do [ -n "${url}" ] || continue CT_DoLog DEBUG "Trying '${url}/${file}${ext}'" CT_DoGetFile "${url}/${file}${ext}" if [ -f "${CT_TARBALLS_DIR}/${file}${ext}" ]; then CT_DoLog DEBUG "Got '${file}' from the Internet" CT_SaveLocal "${CT_TARBALLS_DIR}/${file}${ext}" return 0 fi done done # Just return error, someone may want to catch and handle the error # (eg. glibc add-ons can be missing). return 1 } # Checkout from CVS, and build the associated tarball # The tarball will be called ${basename}.tar.bz2 # Prerequisite: either the server does not require password, # or the user must already be logged in. # 'tag' is the tag to retrieve. Must be specified, but can be empty. # If dirname is specified, then module will be renamed to dirname # prior to building the tarball. # Usage: CT_GetCVS <basename> <url> <module> <tag> [dirname[=subdir]] # Note: if '=subdir' is given, then it is used instead of 'module'. CT_GetCVS() { local basename="$1" local uri="$2" local module="$3" local tag="${4:+-r ${4}}" local dirname="$5" local tmp_dir # First try locally, then the mirror if CT_GetFile "${basename}"; then # Got it! Return early! :-) return 0 fi if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then CT_DoLog WARN "Downloads forbidden, not trying cvs retrieval" return 1 fi CT_MktempDir tmp_dir CT_Pushd "${tmp_dir}" CT_DoExecLog ALL cvs -z 9 -d "${uri}" co -P ${tag} "${module}" if [ -n "${dirname}" ]; then case "${dirname}" in *=*) CT_DoExecLog DEBUG mv "${dirname#*=}" "${dirname%%=*}" CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${basename}.tar.bz2" "${dirname%%=*}" ;; *) CT_DoExecLog ALL mv "${module}" "${dirname}" CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${basename}.tar.bz2" "${dirname:-${module}}" ;; esac fi CT_SaveLocal "${CT_TARBALLS_DIR}/${basename}.tar.bz2" CT_Popd CT_DoExecLog ALL rm -rf "${tmp_dir}" } # Check out from SVN, and build the associated tarball # The tarball will be called ${basename}.tar.bz2 # Prerequisite: either the server does not require password, # or the user must already be logged in. # 'rev' is the revision to retrieve # Usage: CT_GetSVN <basename> <url> [rev] CT_GetSVN() { local basename="$1" local uri="$2" local rev="$3" # First try locally, then the mirror if CT_GetFile "${basename}"; then # Got it! Return early! :-) return 0 fi if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then CT_DoLog WARN "Downloads forbidden, not trying svn retrieval" return 1 fi CT_MktempDir tmp_dir CT_Pushd "${tmp_dir}" if ! CT_DoExecLog ALL svn export ${rev:+-r ${rev}} "${uri}" "${basename}"; then CT_DoLog WARN "Could not retrieve '${basename}'" return 1 fi CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${basename}.tar.bz2" "${basename}" CT_SaveLocal "${CT_TARBALLS_DIR}/${basename}.tar.bz2" CT_Popd CT_DoExecLog ALL rm -rf "${tmp_dir}" } # Clone a git tree # Tries the given URLs in turn until one can get cloned. No tarball will be created. # Prerequisites: either the server does not require password, # or the user has already taken any action to authenticate to the server. # The cloned tree will *not* be stored in the local tarballs dir! # cset_or_ref can be a branch or tag, if specified as 'ref=name' # In this case, 'git ls-remote' is used to get the sha1 and can also # be used to get a list valid refs (e.g. HEAD, refs/heads/master, refs/tags/v3.3.0) # Usage: CT_GetGit <basename> <cset_or_ref> <url> <out_cset> CT_GetGit() { local basename="${1}" local cset_or_ref="${2}" local url="${3}" local _out_cset="${4}" local ref=$(echo "${cset_or_ref}" | ${sed} -n 's/^ref=\(.*\)/\1/p') if [ -n "$ref" ]; then local matches=$(git ls-remote --exit-code "$url" --refs "${ref}") local result=$? CT_TestAndAbort "Failed to find git ref ${ref} at ${url}" "${result}" != "0" if [ $( echo "$matches" | wc -l) -gt 1 ]; then CT_DoLog WARN "Ambiguous ref ${ref} at ${url}, using first" fi local cset=$(echo "$matches" | head -n1 | cut -c1-6) CT_DoLog INFO "ref ${ref} at ${url} has cset of ${cset}" else local cset=${cset_or_ref} CT_DoLog INFO "cset ${cset}" fi if [ -n "${_out_cset}" ]; then eval ${_out_cset}=\${cset} fi local dir="${CT_TARBALLS_DIR}/${basename}-${cset}.git" local file="${basename}-${cset}.tar.gz" local dest="${CT_TARBALLS_DIR}/${file}" local tmp="${CT_TARBALLS_DIR}/${file}.tmp-dl" # Do we already have it? if CT_GetLocal "${file}"; then echo ${cset} return 0 fi # Nope... if [ "${CT_FORBID_DOWNLOAD}" = "y" ]; then CT_DoLog WARN "Downloads forbidden, not trying git retrieval" return 1 fi # Add URLs on the LAN mirror # We subvert the normal download method, just to look for # looking at the local mirror if CT_GetFile "${basename}-${cset}" .tar.gz; then return 0 fi CT_DoLog EXTRA "Retrieving '${basename}-${cset}' (git)" # Remove potential left-over from a previous run CT_DoExecLog ALL rm -rf "${tmp}.tar.gz" "${tmp}.tar" "${tmp}" "${dir}" if CT_DoExecLog ALL git clone "${url}" "${dir}"; then # Yep, cloned OK CT_Pushd "${dir}" CT_DoExecLog ALL git archive --format=tar \ --prefix="${basename}-${cset}/" \ -o "${tmp}.tar" \ "${cset}" CT_DoExecLog ALL gzip -9 "${tmp}.tar" CT_DoExecLog ALL mv -f "${tmp}.tar.gz" "${dest}" CT_SaveLocal "${dest}" CT_DoExecLog ALL rm -rf "${tmp}.tar.gz" "${tmp}.tar" "${tmp}" "${dir}" CT_Popd echo ${cset} return 0 else # Woops... CT_DoExecLog ALL rm -rf "${dir}" CT_DoLog Debug "Could not clone '${basename}'" return 1 fi } # Extract a tarball # Some tarballs need to be extracted in specific places. Eg.: glibc addons # must be extracted in the glibc directory; uCLibc locales must be extracted # in the extra/locale sub-directory of uClibc. This is taken into account # by the caller, that did a 'cd' into the correct path before calling us # and sets nochdir to 'nochdir'. # Note also that this function handles the git trees! # Usage: CT_Extract [nochdir] <basename> [options] # where 'options' are dependent on the source (eg. git branch/tag...) CT_Extract() { local nochdir="$1" local basename local ext local lzma_prog local -a tar_opts if [ "${nochdir}" = "nochdir" ]; then shift nochdir="$(pwd)" else nochdir="${CT_SRC_DIR}" fi basename="$1" shift # Check if already extracted if [ -e "${CT_SRC_DIR}/.${basename}.extracted" ]; then CT_DoLog DEBUG "Already extracted '${basename}'" return 0 fi if ! ext="$(CT_GetFileExtension "${basename}")"; then CT_DoLog WARN "'${basename}' not found in '${CT_TARBALLS_DIR}'" return 1 fi local full_file="${CT_TARBALLS_DIR}/${basename}${ext}" # Check if previously partially extracted if [ -e "${CT_SRC_DIR}/.${basename}.extracting" ]; then CT_DoLog ERROR "The '${basename}' sources were partially extracted." CT_DoLog ERROR "Please remove first:" CT_DoLog ERROR " - the source dir for '${basename}', in '${CT_SRC_DIR}'" CT_DoLog ERROR " - the file '${CT_SRC_DIR}/.${basename}.extracting'" CT_Abort "I'll stop now to avoid any carnage..." fi CT_DoExecLog DEBUG touch "${CT_SRC_DIR}/.${basename}.extracting" CT_Pushd "${nochdir}" CT_DoLog EXTRA "Extracting '${basename}'" CT_DoExecLog FILE mkdir -p "${basename}" tar_opts=( "--strip-components=1" ) tar_opts+=( "-C" "${basename}" ) tar_opts+=( "-xv" ) # One note here: # - lzma can be handled either with 'xz' or 'lzma' # - we get lzma tarball only if either or both are available # - so, if we get an lzma tarball, and either 'xz' or 'lzma' is # missing, we can assume the other is available if [ "${CT_CONFIGURE_has_lzma}" = "y" ]; then lzma_prog="lzma -fdc" else lzma_prog="xz -fdc" fi case "${ext}" in .tar.xz) xz -fdc "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;; .tar.lzma) ${lzma_prog} "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;; .tar.bz2) bzip2 -dc "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;; .tar.gz|.tgz) gzip -dc "${full_file}" | CT_DoExecLog FILE tar "${tar_opts[@]}" -f -;; .tar) CT_DoExecLog FILE tar "${tar_opts[@]}" -f "${full_file}";; .zip) CT_DoExecLog FILE unzip "${@}" "${full_file}";; /.git) CT_ExtractGit "${basename}" "${@}";; *) CT_DoLog WARN "Don't know how to handle '${basename}${ext}': unknown extension" return 1 ;; esac # Don't mark as being extracted for git case "${ext}" in /.git) ;; *) CT_DoExecLog DEBUG touch "${CT_SRC_DIR}/.${basename}.extracted";; esac CT_DoExecLog DEBUG rm -f "${CT_SRC_DIR}/.${basename}.extracting" CT_Popd } # Create a working git clone of a local git repository # Usage: CT_ExtractGit <basename> [ref] # where 'ref' is the reference to use: # the full name of a branch, like "remotes/origin/branch_name" # a date as understandable by git, like "YYYY-MM-DD[ hh[:mm[:ss]]]" # a tag name # If 'ref' is not given, the current repository HEAD will be used CT_ExtractGit() { local basename="${1}" local ref="${2}" local repo local ref_type # pushd now to be able to get git revlist in case ref is a date repo="${CT_TARBALLS_DIR}/${basename}" CT_Pushd "${repo}" # What kind of reference is ${ref} ? if [ -z "${ref}" ]; then ref_type=head ref=$(git rev-list -n1 HEAD) elif git tag |${grep} -E "^${ref}$" >/dev/null 2>&1; then ref_type=tag elif git branch -a --no-color |${grep} -E "^. ${ref}$" >/dev/null 2>&1; then ref_type=branch elif date -d "${ref}" >/dev/null 2>&1; then ref_type=date ref=$(git rev-list -n1 --before="${ref}") else CT_Abort "Reference '${ref}' is an incorrect git reference: neither tag, branch nor date" fi CT_Popd CT_DoExecLog FILE rmdir "${basename}" case "${ref_type}" in branch) CT_DoExecLog FILE git clone -b "${ref}" "${repo}" "${basename}" ;; *) CT_DoExecLog FILE git clone "${repo}" "${basename}" CT_Pushd "${basename}" CT_DoExecLog FILE git checkout "${ref}" CT_Popd ;; esac } # Patches the specified component # See CT_Extract, above, for explanations on 'nochdir' # Usage: CT_Patch [nochdir] <packagename> <packageversion> # If the package directory is *not* packagename-packageversion, then # the caller must cd into the proper directory first, and call us # with nochdir CT_Patch() { local nochdir="$1" local pkgname local version local pkgdir local base_file local ver_file local d local -a patch_dirs local bundled_patch_dir local local_patch_dir local bundled_exp_patch_dir local local_exp_patch_dir if [ "${nochdir}" = "nochdir" ]; then shift pkgname="$1" version="$2" pkgdir="${pkgname}-${version}" nochdir="$(pwd)" else pkgname="$1" version="$2" pkgdir="${pkgname}-${version}" nochdir="${CT_SRC_DIR}/${pkgdir}" fi # Check if already patched if [ -e "${CT_SRC_DIR}/.${pkgdir}.patched" ]; then CT_DoLog DEBUG "Already patched '${pkgdir}'" return 0 fi # Check if already partially patched if [ -e "${CT_SRC_DIR}/.${pkgdir}.patching" ]; then CT_DoLog ERROR "The '${pkgdir}' sources were partially patched." CT_DoLog ERROR "Please remove first:" CT_DoLog ERROR " - the source dir for '${pkgdir}', in '${CT_SRC_DIR}'" CT_DoLog ERROR " - the file '${CT_SRC_DIR}/.${pkgdir}.extracted'" CT_DoLog ERROR " - the file '${CT_SRC_DIR}/.${pkgdir}.patching'" CT_Abort "I'll stop now to avoid any carnage..." fi touch "${CT_SRC_DIR}/.${pkgdir}.patching" CT_Pushd "${nochdir}" CT_DoLog EXTRA "Patching '${pkgdir}'" bundled_patch_dir="${CT_LIB_DIR}/patches/${pkgname}/${version}" bundled_patch_arch_dir="${bundled_patch_dir}/${CT_ARCH}" local_patch_dir="${CT_LOCAL_PATCH_DIR}/${pkgname}/${version}" case "${CT_PATCH_ORDER}" in bundled) patch_dirs=("${bundled_patch_dir}" "${bundled_patch_arch_dir}");; local) patch_dirs=("${local_patch_dir}");; bundled,local) patch_dirs=("${bundled_patch_dir}" "${bundled_patch_arch_dir}" "${local_patch_dir}");; local,bundled) patch_dirs=("${local_patch_dir}" "${bundled_patch_dir}" "${bundled_patch_arch_dir}");; none) patch_dirs=;; esac for d in "${patch_dirs[@]}"; do CT_DoLog DEBUG "Looking for patches in '${d}'..." if [ -n "${d}" -a -d "${d}" ]; then for p in "${d}"/*.patch; do if [ -f "${p}" ]; then CT_DoExecLog ALL ${patch} --no-backup-if-mismatch -g0 -F1 -p1 -f -i "${p}" fi done if [ "${CT_PATCH_SINGLE}" = "y" ]; then break fi fi done if [ "${CT_OVERIDE_CONFIG_GUESS_SUB}" = "y" ]; then CT_DoLog ALL "Overiding config.guess and config.sub" for cfg in config_guess config_sub; do eval ${cfg}="${CT_LIB_DIR}/scripts/${cfg/_/.}" [ -e "${CT_TOP_DIR}/scripts/${cfg/_/.}" ] && eval ${cfg}="${CT_TOP_DIR}/scripts/${cfg/_/.}" # Can't use CT_DoExecLog because of the '{} \;' to be passed un-mangled to find find . -type f -name "${cfg/_/.}" \ -exec chmod -v u+w {} \; \ -exec cp -v "${!cfg}" {} \; |CT_DoLog ALL done fi CT_DoExecLog DEBUG touch "${CT_SRC_DIR}/.${pkgdir}.patched" CT_DoExecLog DEBUG rm -f "${CT_SRC_DIR}/.${pkgdir}.patching" CT_Popd } # Two wrappers to call config.(guess|sub) either from CT_TOP_DIR or CT_LIB_DIR. # Those from CT_TOP_DIR, if they exist, will be be more recent than those from CT_LIB_DIR. CT_DoConfigGuess() { if [ -x "${CT_TOP_DIR}/scripts/config.guess" ]; then "${CT_TOP_DIR}/scripts/config.guess" else "${CT_LIB_DIR}/scripts/config.guess" fi } CT_DoConfigSub() { if [ -x "${CT_TOP_DIR}/scripts/config.sub" ]; then "${CT_TOP_DIR}/scripts/config.sub" "$@" else "${CT_LIB_DIR}/scripts/config.sub" "$@" fi } # Compute the target tuple from what is provided by the user # Usage: CT_DoBuildTargetTuple # In fact this function takes the environment variables to build the target # tuple. It is needed both by the normal build sequence, as well as the # sample saving sequence. CT_DoBuildTargetTuple() { # Set the endianness suffix, and the default endianness gcc option case "${CT_ARCH_ENDIAN}" in big) target_endian_eb=eb target_endian_be=be target_endian_el= target_endian_le= CT_ARCH_ENDIAN_CFLAG="-mbig-endian" CT_ARCH_ENDIAN_LDFLAG="-Wl,-EB" ;; little) target_endian_eb= target_endian_be= target_endian_el=el target_endian_le=le CT_ARCH_ENDIAN_CFLAG="-mlittle-endian" CT_ARCH_ENDIAN_LDFLAG="-Wl,-EL" ;; esac # Set the bitness suffix case "${CT_ARCH_BITNESS}" in 32) target_bits_32=32 target_bits_64= ;; 64) target_bits_32= target_bits_64=64 ;; esac # Build the default architecture tuple part CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_SUFFIX}" # Set defaults for the system part of the tuple. Can be overriden # by architecture-specific values. case "${CT_LIBC}" in *glibc) CT_TARGET_SYS=gnu;; uClibc) CT_TARGET_SYS=uclibc;; musl) CT_TARGET_SYS=musl;; avr-libc) # avr-libc only seems to work with the non-canonical "avr" target. CT_TARGET_SKIP_CONFIG_SUB=y CT_TARGET_SYS= # CT_TARGET_SYS must be empty too ;; *) CT_TARGET_SYS=elf;; esac # Set the default values for ARCH, ABI, CPU, TUNE, FPU and FLOAT unset CT_ARCH_ARCH_CFLAG CT_ARCH_ABI_CFLAG CT_ARCH_CPU_CFLAG CT_ARCH_TUNE_CFLAG CT_ARCH_FPU_CFLAG CT_ARCH_FLOAT_CFLAG unset CT_ARCH_WITH_ARCH CT_ARCH_WITH_ABI CT_ARCH_WITH_CPU CT_ARCH_WITH_TUNE CT_ARCH_WITH_FPU CT_ARCH_WITH_FLOAT [ "${CT_ARCH_ARCH}" ] && { CT_ARCH_ARCH_CFLAG="-march=${CT_ARCH_ARCH}"; CT_ARCH_WITH_ARCH="--with-arch=${CT_ARCH_ARCH}"; } [ "${CT_ARCH_ABI}" ] && { CT_ARCH_ABI_CFLAG="-mabi=${CT_ARCH_ABI}"; CT_ARCH_WITH_ABI="--with-abi=${CT_ARCH_ABI}"; } [ "${CT_ARCH_CPU}" ] && { CT_ARCH_CPU_CFLAG="-mcpu=${CT_ARCH_CPU}"; CT_ARCH_WITH_CPU="--with-cpu=${CT_ARCH_CPU}"; } [ "${CT_ARCH_TUNE}" ] && { CT_ARCH_TUNE_CFLAG="-mtune=${CT_ARCH_TUNE}"; CT_ARCH_WITH_TUNE="--with-tune=${CT_ARCH_TUNE}"; } [ "${CT_ARCH_FPU}" ] && { CT_ARCH_FPU_CFLAG="-mfpu=${CT_ARCH_FPU}"; CT_ARCH_WITH_FPU="--with-fpu=${CT_ARCH_FPU}"; } case "${CT_ARCH_FLOAT}" in hard) CT_ARCH_FLOAT_CFLAG="-mhard-float" CT_ARCH_WITH_FLOAT="--with-float=hard" ;; soft) CT_ARCH_FLOAT_CFLAG="-msoft-float" CT_ARCH_WITH_FLOAT="--with-float=soft" ;; softfp) CT_ARCH_FLOAT_CFLAG="-mfloat-abi=softfp" CT_ARCH_WITH_FLOAT="--with-float=softfp" ;; esac # Build the default kernel tuple part CT_TARGET_KERNEL="${CT_KERNEL}" # Overide the default values with the components specific settings CT_DoArchTupleValues CT_DoKernelTupleValues # Finish the target tuple construction CT_TARGET="${CT_TARGET_ARCH}" CT_TARGET="${CT_TARGET}${CT_TARGET_VENDOR:+-${CT_TARGET_VENDOR}}" CT_TARGET="${CT_TARGET}${CT_TARGET_KERNEL:+-${CT_TARGET_KERNEL}}" CT_TARGET="${CT_TARGET}${CT_TARGET_SYS:+-${CT_TARGET_SYS}}" # Sanity checks __sed_alias="" if [ -n "${CT_TARGET_ALIAS_SED_EXPR}" ]; then __sed_alias=$(echo "${CT_TARGET}" |${sed} -r -e "${CT_TARGET_ALIAS_SED_EXPR}") fi case ":${CT_TARGET_VENDOR}:${CT_TARGET_ALIAS}:${__sed_alias}:" in :*" "*:*:*:) CT_Abort "Don't use spaces in the vendor string, it breaks things.";; :*"-"*:*:*:) CT_Abort "Don't use dashes in the vendor string, it breaks things.";; :*:*" "*:*:) CT_Abort "Don't use spaces in the target alias, it breaks things.";; :*:*:*" "*:) CT_Abort "Don't use spaces in the target sed transform, it breaks things.";; esac # Canonicalise it if [ "${CT_TARGET_SKIP_CONFIG_SUB}" != "y" ]; then CT_TARGET=$(CT_DoConfigSub "${CT_TARGET}") fi # Prepare the target CFLAGS CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_ENDIAN_CFLAG}" CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_ARCH_CFLAG}" CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_ABI_CFLAG}" CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_CPU_CFLAG}" CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_TUNE_CFLAG}" CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_FPU_CFLAG}" CT_ARCH_TARGET_CFLAGS="${CT_ARCH_TARGET_CFLAGS} ${CT_ARCH_FLOAT_CFLAG}" # Now on for the target LDFLAGS CT_ARCH_TARGET_LDFLAGS="${CT_ARCH_TARGET_LDFLAGS} ${CT_ARCH_ENDIAN_LDFLAG}" } # This function determines the target tuple for a given set of compiler # flags, using either GCC's multiarch feature (if supported; if not, # GCC prints nothing and exits with status 0), falling back to calling # the architecture-specific functions. CT_DoMultilibTarget() { local target="$1"; shift local -a multi_flags=( "$@" ) local gcc_multiarch gcc_multiarch=$( "${CT_TARGET}-gcc" -print-multiarch "${multi_flags[@]}" ) if [ -n "${gcc_multiarch}" ]; then echo "${gcc_multiarch}" return fi # Fall back to arch-specific guesswork CT_DoArchMultilibTarget "${target}" "${multi_flags[@]}" } # This function does pause the build until the user strikes "Return" # Usage: CT_DoPause [optional_message] CT_DoPause() { local foo local message="${1:-Pausing for your pleasure}" CT_DoLog INFO "${message}" read -p "Press 'Enter' to continue, or Ctrl-C to stop..." foo >&6 return 0 } # This function creates a tarball of the specified directory, but # only if it exists # Usage: CT_DoTarballIfExists <dir> <tarball_basename> [extra_tar_options [...]] CT_DoTarballIfExists() { local dir="$1" local tarball="$2" shift 2 local -a extra_tar_opts=( "$@" ) local -a compress case "${CT_DEBUG_CT_SAVE_STEPS_GZIP}" in y) compress=( gzip -c -3 - ); tar_ext=.gz;; *) compress=( cat - ); tar_ext=;; esac if [ -d "${dir}" ]; then CT_DoLog DEBUG " Saving '${dir}'" { tar c -C "${dir}" -v -f - "${extra_tar_opts[@]}" . \ |"${compress[@]}" >"${tarball}.tar${tar_ext}" ; } 2>&1 |${sed} -r -e 's/^/ /;' |CT_DoLog STATE else CT_DoLog STATE " Not saving '${dir}': does not exist" fi } # This function extracts a tarball to the specified directory, but # only if the tarball exists # Usage: CT_DoExtractTarballIfExists <tarball_basename> <dir> [extra_tar_options [...]] CT_DoExtractTarballIfExists() { local tarball="$1" local dir="$2" shift 2 local -a extra_tar_opts=( "$@" ) local -a uncompress case "${CT_DEBUG_CT_SAVE_STEPS_GZIP}" in y) uncompress=( gzip -c -d ); tar_ext=.gz;; *) uncompress=( cat ); tar_ext=;; esac if [ -f "${tarball}.tar${tar_ext}" ]; then CT_DoLog DEBUG " Restoring '${dir}'" CT_DoForceRmdir "${dir}" CT_DoExecLog DEBUG mkdir -p "${dir}" { "${uncompress[@]}" "${tarball}.tar${tar_ext}" \ |tar x -C "${dir}" -v -f - "${extra_tar_opts[@]}" ; } 2>&1 |${sed} -r -e 's/^/ /;' |CT_DoLog STATE else CT_DoLog STATE " Not restoring '${dir}': does not exist" fi } # This function saves the state of the toolchain to be able to restart # at any one point # Usage: CT_DoSaveState <next_step_name> CT_DoSaveState() { [ "${CT_DEBUG_CT_SAVE_STEPS}" = "y" ] || return 0 local state_name="$1" local state_dir="${CT_STATE_DIR}/${state_name}" CT_DoLog INFO "Saving state to restart at step '${state_name}'..." rm -rf "${state_dir}" mkdir -p "${state_dir}" CT_DoLog STATE " Saving environment and aliases" # We must omit shell functions, and some specific bash variables # that break when restoring the environment, later. We could do # all the processing in the awk script, but a sed is easier... set |${awk} ' BEGIN { _p = 1; } $0~/^[^ ]+ \(\)/ { _p = 0; } _p == 1 $0 == "}" { _p = 1; } ' |${sed} -r -e '/^BASH_(ARGC|ARGV|LINENO|SOURCE|VERSINFO)=/d; /^(UID|EUID)=/d; /^(FUNCNAME|GROUPS|PPID|SHELLOPTS)=/d;' >"${state_dir}/env.sh" CT_DoTarballIfExists "${CT_BUILDTOOLS_PREFIX_DIR}" "${state_dir}/buildtools_dir" CT_DoTarballIfExists "${CT_CONFIG_DIR}" "${state_dir}/config_dir" CT_DoTarballIfExists "${CT_PREFIX_DIR}" "${state_dir}/prefix_dir" --exclude '*.log' CT_DoLog STATE " Saving log file" exec >/dev/null case "${CT_DEBUG_CT_SAVE_STEPS_GZIP}" in y) gzip -3 -c "${tmp_log_file}" >"${state_dir}/log.gz";; *) cat "${tmp_log_file}" >"${state_dir}/log";; esac exec >>"${tmp_log_file}" } # This function restores a previously saved state # Usage: CT_DoLoadState <state_name> CT_DoLoadState(){ local state_name="$1" local state_dir="${CT_STATE_DIR}/${state_name}" local old_RESTART="${CT_RESTART}" local old_STOP="${CT_STOP}" CT_TestOrAbort "The previous build did not reach the point where it could be restarted at '${CT_RESTART}'" -d "${state_dir}" # We need to do something special with the log file! if [ "${CT_LOG_TO_FILE}" = "y" ]; then exec >"${state_dir}/tail.log" fi CT_DoLog INFO "Restoring state at step '${state_name}', as requested." CT_DoExtractTarballIfExists "${state_dir}/prefix_dir" "${CT_PREFIX_DIR}" CT_DoExtractTarballIfExists "${state_dir}/config_dir" "${CT_CONFIG_DIR}" CT_DoExtractTarballIfExists "${state_dir}/buildtools_dir" "${CT_BUILDTOOLS_PREFIX_DIR}" # Restore the environment, discarding any error message # (for example, read-only bash internals) CT_DoLog STATE " Restoring environment" . "${state_dir}/env.sh" >/dev/null 2>&1 || true # Restore the new RESTART and STOP steps CT_RESTART="${old_RESTART}" CT_STOP="${old_STOP}" unset old_stop old_restart CT_DoLog STATE " Restoring log file" exec >/dev/null case "${CT_DEBUG_CT_SAVE_STEPS_GZIP}" in y) gzip -dc "${state_dir}/log.gz" >"${tmp_log_file}";; *) cat "${state_dir}/log" >"${tmp_log_file}";; esac cat "${state_dir}/tail.log" >>"${tmp_log_file}" exec >>"${tmp_log_file}" rm -f "${state_dir}/tail.log" } # This function sets a kconfig option to a specific value in a .config file # Usage: CT_KconfigSetOption <option> <value> <file> CT_KconfigSetOption() { option="$1" value="$2" file="$3" ${grep} -E -q "^${option}=.*" "${file}" && \ ${sed} -i -r -e "s;^${option}=.*$;${option}=${value};" "${file}" || \ ${grep} -E -q "^# ${option} is not set$" "${file}" && \ ${sed} -i -r -e "s;^# ${option} is not set$;${option}=${value};" "${file}" || \ echo "${option}=${value}" >> "${file}" } # This function enables a kconfig option to '=y' in a .config file # Usage: CT_KconfigEnableOption <option> <file> CT_KconfigEnableOption() { option="$1" file="$2" CT_KconfigSetOption "${option}" "y" "${file}" } # This function disables a kconfig option in a .config file # Usage: CT_KconfigDisableOption <option> <file> CT_KconfigDisableOption() { option="${1}" file="${2}" ${grep} -E -q "^# ${option} is not set$" "${file}" || \ ${grep} -E -q "^${option}=.*$" "${file}" && \ ${sed} -i -r -e "s;^${option}=.*$;# ${option} is not set;" "${file}" || \ echo "# ${option} is not set" >> "${file}" } # This function deletes a kconfig option in a .config file, no matter if it # is set or commented out. # Usage: CT_KconfigDeleteOption <option> <file> CT_KconfigDeleteOption() { option="${1}" file="${2}" ${grep} -E -q "^# ${option} is not set$" "${file}" && \ ${sed} -i -r -e "/^# ${option} is not set$/d" "${file}" || \ ${grep} -E -q "^${option}=.*$" "${file}" && \ ${sed} -i -r -e "/^${option}=.*$/d" "${file}" || true }