crosstool-ng/scripts/functions

# 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

CT_OnError() {
    ret=$?
    CT_DoLog ERROR "Build failed in step \"${CT_STEP_MESSAGE[${CT_STEP_COUNT}]}\""
    for((step=(CT_STEP_COUNT-1); step>1; step--)); do
        CT_DoLog ERROR "      called in step \"${CT_STEP_MESSAGE[${step}]}\""
    done
    CT_DoLog ERROR "Error happened in \"${BASH_SOURCE[1]}\" in function \"${FUNCNAME[1]}\" (line unknown, sorry)"
    for((depth=2; ${BASH_LINENO[$((${depth}-1))]}>0; depth++)); do
        CT_DoLog ERROR "      called from \"${BASH_SOURCE[${depth}]}\" at line # ${BASH_LINENO[${depth}-1]} in function \"${FUNCNAME[${depth}]}\""
    done
    CT_DoLog ERROR "Look at \"${CT_ACTUAL_LOG_FILE}\" for more info on this error."
    exit $ret
}
trap CT_OnError ERR

set -E
set -o pipefail

# This is crosstool-ng-0.0.1
CT_VERSION=ng-0.0.1

# 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_DEBUG=4
CT_LOG_LEVEL_ALL=5

# Attributes
_A_NOR="\\033[0m"
_A_BRI="\\033[1m"
_A_DIM="\\033[2m"
_A_UND="\\033[4m"
_A_BRB="\\033[5m"
_A_REV="\\033[7m"
_A_HID="\\033[8m"

# Fore colors
_F_BLK="\\033[30m"
_F_RED="\\033[31m"
_F_GRN="\\033[32m"
_F_YEL="\\033[33m"
_F_BLU="\\033[34m"
_F_MAG="\\033[35m"
_F_CYA="\\033[36m"
_F_WHI="\\033[37m"

# 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
#   - DEBUG:   Debug messages
#   - ALL:     Component's build 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 [ $# -eq 0 ]; then
        cat -
    else
        echo "${1}"
    fi |( IFS="\n" # We want the full lines, even leading spaces
          cpt=0
          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};;
                *"error:"*)             cur_L=ERROR; cur_l=${CT_LOG_LEVEL_ERROR};;
                *"make["?*"]:"*"Stop.") cur_L=ERROR; cur_l=${CT_LOG_LEVEL_ERROR};;
                *)                      cur_L="${LEVEL}"; cur_l="${level}";;
              esac
              l="`printf \"[%-5s]%*s%s%s\" \"${cur_L}\" \"${indent}\" \" \" \"${line}\"`"
              # There will always be a log file, be it /dev/null
              echo -e "${l}" >>"${CT_ACTUAL_LOG_FILE}"
              color="CT_${cur_L}_COLOR"
              normal="CT_NORMAL_COLOR"
              if [ ${cur_l} -le ${max_level} ]; then
                  echo -e "\r${!color}${l}${!normal}"
                  CT_PROG_BAR_CPT=0 # Force redrawing progress bar on next 'unlogged' line
              else
                  ${CT_PROG_BAR}
              fi
          done
        )

    return 0
}

# Abort the execution with a error message
# Usage: CT_Abort <message>
CT_Abort() {
    CT_DoLog ERROR "$1" >&2
    exit 1
}

# Test a condition, and print a message if satisfied
# Usage: CT_Test <message> <tests>
CT_Test() {
    local ret
    local m="$1"
    shift
    test "$@" && 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="$1"
    shift
    test "$@" && 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="$1"
    shift
    test "$@" || CT_Abort "$m"
    return 0
}

# Test the presence of a tool, or abort if not found
# Usage: CT_HasOrAbort <tool>
CT_HasOrAbort() {
    CT_TestAndAbort "\"${1}\" not found and needed for successfull toolchain build." -z "`which \"${1}\"`"
    return 0
}

# 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}]="<none>"
# 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 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"
    return 0
}

# Pushes into a directory, and pops back
CT_Pushd() {
    pushd "$1" >/dev/null 2>&1
}
CT_Popd() {
    popd >/dev/null 2>&1
}

# Makes a path absolute
# Usage: CT_MakeAbsolutePath path
CT_MakeAbsolutePath() {
    # Try to cd in that directory
    if [ -d "$1" ]; then
        CT_Pushd "$1"
        pwd
        CT_Popd
    else
        # No such directory, fail back to guessing
        case "$1" in
            /*)  echo "$1";;
            *)   echo "`pwd`/$1";;
        esac
    fi
    
    return 0
}

# 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}/.XXXXXX\"`"
    CT_TestOrAbort "Could not make temporary directory" -n "${!1}" -a -d "${!1}"
}

# 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
}

# Download an URL using wget
# Usage: CT_DoGetFileWget <URL>
CT_DoGetFileWget() {
    # Need to return true because it is legitimate to not find the tarball at
    # some of the provided URLs (think about snapshots, different layouts for
    # different gcc versions, etc...)
    # Some (very old!) FTP server might not support the passive mode, thus
    # retry without
    # With automated download as we are doing, it can be very dangerous to use
    # -c to continue the downloads. It's far better to simply overwrite the
    # destination file
    wget -nc --progress=dot:binary --tries=3 --passive-ftp "$1" || wget -nc --progress=dot:binary --tries=3 "$1" || true
}

# Download an URL using curl
# Usage: CT_DoGetFileCurl <URL>
CT_DoGetFileCurl() {
	# Note: comments about wget method are also valid here
	# Plus: no good progreess indicator is available with curl,
	#       so output is consigned to oblivion
	curl --ftp-pasv -O --retry 3 "$1" >/dev/null || curl -O --retry 3 "$1" >/dev/null || true
}

# Wrapper function to call one of curl or wget
# Usage: CT_DoGetFile <URL>
CT_DoGetFile() {
    local _wget=`which wget`
    local _curl=`which curl`
    case "${_wget},${_curl}" in
        ,)  CT_DoError "Could find neither wget nor curl";;
        ,*) CT_DoGetFileCurl "$1" 2>&1 |CT_DoLog DEBUG;;
        *)  CT_DoGetFileWget "$1" 2>&1 |CT_DoLog DEBUG;;
    esac
}

# Download the file from one of the URLs passed as argument
# Usage: CT_GetFile <filename> <url> [<url> ...]
CT_GetFile() {
    local got_it
    local ext
    local url
    local file="$1"
    shift

    # Do we already have it?
    ext=`CT_GetFileExtension "${file}"`
    if [ -n "${ext}" ]; then
        if [ "${CT_FORCE_DOWNLOAD}" = "y" ]; then
            CT_DoLog DEBUG "Removing already present \"${file}\""
            rm -f "${CT_TARBALLS_DIR}/${file}${ext}"
        else
            CT_DoLog DEBUG "Already have \"${file}\""
            return 0
        fi
    fi

    CT_DoLog EXTRA "Retrieving \"${file}\""
    CT_Pushd "${CT_TARBALLS_DIR}"
    # File not yet downloaded, try to get it
    got_it=0
    if [ "${got_it}" != "y" ]; then
        # We'd rather have a bzip2'ed tarball, then gzipped, and finally plain tar.
        for ext in .tar.bz2 .tar.gz .tgz .tar; do
            # Try all urls in turn
            for url in "$@"; do
                case "${url}" in
                    *)  CT_DoLog DEBUG "Trying \"${url}/${file}${ext}\""
                        CT_DoGetFile "${url}/${file}${ext}"
                        ;;
                esac
                [ -f "${file}${ext}" ] && got_it=1 && break 2 || true
            done
        done
    fi
    CT_Popd

    CT_TestAndAbort "Could not download \"${file}\", and not present in \"${CT_TARBALLS_DIR}\"" ${got_it} -eq 0
}

# Get the file name extension of a component
# Usage: CT_GetFileExtension <component_name-component_version>
# If found, echoes the extension to stdout
# If not found, echoes nothing on stdout.
CT_GetFileExtension() {
    local ext
    local file="$1"
    local got_it=1

    CT_Pushd "${CT_TARBALLS_DIR}"
    for ext in .tar.gz .tar.bz2 .tgz .tar; do
        if [ -f "${file}${ext}" ]; then
            echo "${ext}"
            got_it=0
            break
        fi
    done
    CT_Popd

    return 0
}

# Extract a tarball and patch the resulting sources if necessary.
# 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.
CT_ExtractAndPatch() {
    local file="$1"
    local base_file=`echo "${file}" |cut -d - -f 1`
    local ver_file=`echo "${file}" |cut -d - -f 2-`
    local official_patch_dir
    local custom_patch_dir
    local libc_addon
    local ext=`CT_GetFileExtension "${file}"`
    CT_TestAndAbort "\"${file}\" not found in \"${CT_TARBALLS_DIR}\"" -z "${ext}"
    local full_file="${CT_TARBALLS_DIR}/${file}${ext}"

    CT_Pushd "${CT_SRC_DIR}"

    # Add-ons need a little love, really.
    case "${file}" in
        glibc-[a-z]*-*)
            CT_TestAndAbort "Trying to extract the C-library addon/locales \"${file}\" when C-library not yet extracted" ! -d "${CT_LIBC_FILE}"
            cd "${CT_LIBC_FILE}"
            libc_addon=y
            [ -f ".${file}.extracted" ] && return 0
            touch ".${file}.extracted"
            ;;
        uClibc-locale-*)
            CT_TestAndAbort "Trying to extract the C-library addon/locales \"${file}\" when C-library not yet extracted" ! -d "${CT_LIBC_FILE}"
            cd "${CT_LIBC_FILE}/extra/locale"
            libc_addon=y
            [ -f ".${file}.extracted" ] && return 0
            touch ".${file}.extracted"
            ;;
    esac

    # If the directory exists, then consider extraction and patching done
    if [ -d "${file}" ]; then
        CT_DoLog DEBUG "Already extracted \"${file}\""
        return 0
    fi

    CT_DoLog EXTRA "Extracting \"${file}\""
    case "${ext}" in
        .tar.bz2)     tar xvjf "${full_file}" |CT_DoLog ALL;;
        .tar.gz|.tgz) tar xvzf "${full_file}" |CT_DoLog ALL;;
        .tar)         tar xvf  "${full_file}" |CT_DoLog ALL;;
        *)            CT_Abort "Don't know how to handle \"${file}\": unknown extension" ;;
    esac

    # Snapshots might not have the version number in the extracted directory
    # name. This is also the case for some (old) packages, such as libfloat.
    # Overcome this issue by symlink'ing the directory.
    if [ ! -d "${file}" -a "${libc_addon}" != "y" ]; then
        case "${ext}" in
            .tar.bz2)     base=`tar tjf "${full_file}" |head -n 1 |cut -d / -f 1 || true`;;
            .tar.gz|.tgz) base=`tar tzf "${full_file}" |head -n 1 |cut -d / -f 1 || true`;;
            .tar)         base=`tar tf  "${full_file}" |head -n 1 |cut -d / -f 1 || true`;;
        esac
        CT_TestOrAbort "There was a problem when extracting \"${file}\"" -d "${base}" -o "${base}" != "${file}"
        ln -s "${base}" "${file}"
    fi

    # Kludge: outside this function, we wouldn't know if we had just extracted
    # a libc addon, or a plain package. Apply patches now.
    CT_DoLog EXTRA "Patching \"${file}\""

    # If libc addon, we're already in the correct place.
    [ -z "${libc_addon}" ] && cd "${file}"

    [ "${CUSTOM_PATCH_ONLY}" = "y" ] || official_patch_dir="${CT_TOP_DIR}/patches/${base_file}/${ver_file}"
    [ "${CT_CUSTOM_PATCH}" = "y" ] && custom_patch_dir="${CT_CUSTOM_PATCH_DIR}/${base_file}/${ver_file}"
    for patch_dir in "${official_patch_dir}" "${custom_patch_dir}"; do
        if [ -n "${patch_dir}" -a -d "${patch_dir}" ]; then
            for p in "${patch_dir}"/*.patch; do
                if [ -f "${p}" ]; then
                    CT_DoLog DEBUG "Applying patch \"${p}\""
                    patch -g0 -F1 -p1 -f <"${p}" |CT_DoLog ALL
                    CT_TestAndAbort "Failed while applying patch file \"${p}\"" ${PIPESTATUS[0]} -ne 0
                fi
            done
        fi
    done

    CT_Popd
}

# Compute the target triplet from what is provided by the user
# Usage: CT_DoBuildTargetTriplet
# In fact this function takes the environment variables to build the target
# triplet. It is needed both by the normal build sequence, as well as the
# sample saving sequence.
CT_DoBuildTargetTriplet() {
    case "${CT_ARCH_BE},${CT_ARCH_LE}" in
        y,) target_endian_eb=eb; target_endian_el=;;
        ,y) target_endian_eb=; target_endian_el=el;;
    esac
    case "${CT_ARCH}" in
        arm)  CT_TARGET="${CT_ARCH}${target_endian_eb}";;
        mips) CT_TARGET="${CT_ARCH}${target_endian_el}";;
        x86*) # Much love for this one :-(
              # Ultimately, we should use config.sub to output the correct
              # procesor name. Work for later...
              arch="${CT_ARCH_ARCH}"
              [ -z "${arch}" ] && arch="${CT_ARCH_TUNE}"
              case "${CT_ARCH}" in
                  x86_64)      CT_TARGET=x86_64;;
              	  *)  case "${arch}" in
                          "")                                       CT_TARGET=i386;;
                          i386|i486|i586|i686)                      CT_TARGET="${arch}";;
                          winchip*)                                 CT_TARGET=i486;;
                          pentium|pentium-mmx|c3*)                  CT_TARGET=i586;;
                          nocona|athlon*64|k8|athlon-fx|opteron)    CT_TARGET=x86_64;;
                          pentiumpro|pentium*|athlon*)              CT_TARGET=i686;;
                          *)                                        CT_TARGET=i586;;
                      esac;;
              esac;;
    esac
    case "${CT_TARGET_VENDOR}" in
        "") CT_TARGET="${CT_TARGET}-unknown";;
        *)  CT_TARGET="${CT_TARGET}-${CT_TARGET_VENDOR}";;
    esac
    case "${CT_KERNEL}" in
        linux*)  CT_TARGET="${CT_TARGET}-linux";;
        cygwin*) CT_TARGET="${CT_TARGET}-cygwin";;
    esac
    case "${CT_LIBC}" in
        glibc)  CT_TARGET="${CT_TARGET}-gnu";;
        uClibc) CT_TARGET="${CT_TARGET}-uclibc";;
    esac
    case "${CT_ARCH_ABI}" in
        eabi)   CT_TARGET="${CT_TARGET}eabi";;
    esac
    CT_TARGET="`${CT_TOP_DIR}/tools/config.sub ${CT_TARGET}`"
}