# eglibc build functions (initially by Thomas JOURDAN).

# Add the definitions common to glibc and eglibc

#   do_libc_start_files

#   do_libc

#   do_libc_finish

#   do_libc_add_ons_list

. "${CT_LIB_DIR}/scripts/build/libc/glibc-eglibc.sh-common"

# Download eglibc repository

do_eglibc_get() {

    CT_HasOrAbort svn

    case "${CT_LIBC_VERSION}" in

        trunk)  svn_url="svn://svn.eglibc.org/trunk";;

        *)      svn_url="svn://svn.eglibc.org/branches/eglibc-${CT_LIBC_VERSION}";;

    esac

    case "${CT_EGLIBC_CHECKOUT}" in

        y)  svn_action="checkout";;

        *)  svn_action="export --force";;

    esac

    CT_DoExecLog ALL svn ${svn_action} -r "${CT_EGLIBC_REVISION:-HEAD}" "${svn_url}" "$(pwd)"

    # Compress eglibc

    CT_DoExecLog ALL mv libc "eglibc-${CT_LIBC_VERSION}"

    CT_DoExecLog ALL tar cjf "eglibc-${CT_LIBC_VERSION}.tar.bz2" "eglibc-${CT_LIBC_VERSION}"

    # Compress linuxthreads, localedef and ports

    # Assign them the name the way ct-ng like it

    for addon in linuxthreads localedef ports; do

        CT_DoExecLog ALL mv "${addon}" "eglibc-${addon}-${CT_LIBC_VERSION}"

        CT_DoExecLog ALL tar cjf "eglibc-${addon}-${CT_LIBC_VERSION}.tar.bz2" "eglibc-${addon}-${CT_LIBC_VERSION}"

    done

}

# Download glibc

do_libc_get() {

    # eglibc is only available through subversion, there are no

    # snapshots available. Moreover, addons will be downloaded

    # simultaneously.

    # build filename

    eglibc="eglibc-${CT_LIBC_VERSION}.tar.bz2"

    eglibc_linuxthreads="${CT_LIBC}-linuxthreads-${CT_LIBC_VERSION}.tar.bz2"

    eglibc_localedef="${CT_LIBC}-localedef-${CT_LIBC_VERSION}.tar.bz2"

    eglibc_ports="${CT_LIBC}-ports-${CT_LIBC_VERSION}.tar.bz2"

    # Check if every tarballs are already present

    if [    -f "${CT_TARBALLS_DIR}/${eglibc}"                   \

         -a -f "${CT_TARBALLS_DIR}/${eglibc_linuxthreads}"      \

         -a -f "${CT_TARBALLS_DIR}/${eglibc_localedef}"         \

         -a -f "${CT_TARBALLS_DIR}/${eglibc_ports}"             \

       ]; then

        CT_DoLog DEBUG "Already have 'eglibc-${CT_LIBC_VERSION}'"

        return 0

    fi

    if [    -f "${CT_LOCAL_TARBALLS_DIR}/${eglibc}"                 \

         -a -f "${CT_LOCAL_TARBALLS_DIR}/${eglibc_linuxthreads}"    \

         -a -f "${CT_LOCAL_TARBALLS_DIR}/${eglibc_localedef}"       \

         -a -f "${CT_LOCAL_TARBALLS_DIR}/${eglibc_ports}"           \

         -a "${CT_FORCE_DOWNLOAD}" != "y"                           \

       ]; then

        CT_DoLog DEBUG "Got 'eglibc-${CT_LIBC_VERSION}' from local storage"

        for file in ${eglibc} ${eglibc_linuxthreads} ${eglibc_localedef} ${eglibc_ports}; do

            CT_DoExecLog ALL ln -s "${CT_LOCAL_TARBALLS_DIR}/${file}" "${CT_TARBALLS_DIR}/${file}"

        done

        return 0

    fi

    # Not found locally, try from the network

    CT_DoLog EXTRA "Retrieving 'eglibc-${CT_LIBC_VERSION}'"

    CT_MktempDir tmp_dir

    CT_Pushd "${tmp_dir}"

    do_eglibc_get

    CT_DoLog DEBUG "Moving 'eglibc-${CT_LIBC_VERSION}' to tarball directory"

    for file in ${eglibc} ${eglibc_linuxthreads} ${eglibc_localedef} ${eglibc_ports}; do

        CT_DoExecLog ALL mv -f "${file}" "${CT_TARBALLS_DIR}"

    done

    CT_Popd

    # Remove source files

    CT_DoExecLog ALL rm -rf "${tmp_dir}"

    if [ "${CT_SAVE_TARBALLS}" = "y" ]; then

        CT_DoLog EXTRA "Saving 'eglibc-${CT_LIBC_VERSION}' to local storage"

        for file in ${eglibc} ${eglibc_linuxthreads} ${eglibc_localedef} ${eglibc_ports}; do

            CT_DoExecLog ALL mv -f "${CT_TARBALLS_DIR}/${file}" "${CT_LOCAL_TARBALLS_DIR}"

            CT_DoExecLog ALL ln -s "${CT_LOCAL_TARBALLS_DIR}/${file}" "${CT_TARBALLS_DIR}/${file}"

        done

    fi

    return 0

}

# Extract eglibc

do_libc_extract() {

    CT_Extract "eglibc-${CT_LIBC_VERSION}"

    CT_Patch "eglibc" "${CT_LIBC_VERSION}"

    # C library addons

    for addon in $(do_libc_add_ons_list " "); do

        # NPTL addon is not to be extracted, in any case

        [ "${addon}" = "nptl" ] && continue || true

        CT_Pushd "${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}"

        CT_Extract nochdir "eglibc-${addon}-${CT_LIBC_VERSION}"

        CT_TestAndAbort "Error in add-on '${addon}': both short and long names in tarball" \

            -d "${addon}" -a -d "eglibc-${addon}-${CT_LIBC_VERSION}"

        # Some addons have the 'long' name, while others have the

        # 'short' name, but patches are non-uniformly built with

        # either the 'long' or 'short' name, whatever the addons name

        # but we prefer the 'short' name and avoid duplicates.

        if [ -d "eglibc-${addon}-${CT_LIBC_VERSION}" ]; then

            mv "eglibc-${addon}-${CT_LIBC_VERSION}" "${addon}"

        fi

        ln -s "${addon}" "eglibc-${addon}-${CT_LIBC_VERSION}"

        CT_Patch nochdir "eglibc" "${addon}-${CT_LIBC_VERSION}"

        # Remove the long name since it can confuse configure scripts to run

        # the same source twice.

        rm "eglibc-${addon}-${CT_LIBC_VERSION}"

        CT_Popd

    done

    # The configure files may be older than the configure.in files

    # if using a snapshot (or even some tarballs). Fake them being

    # up to date.

    find "${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}" -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL

    return 0

}

# Copy user provided eglibc configuration file if provided

do_libc_check_config() {

    if [ "${CT_EGLIBC_CUSTOM_CONFIG}" != "y" ]; then

        return 0

    fi

    CT_DoStep INFO "Checking C library configuration"

    CT_TestOrAbort "You did not provide an eglibc config file!" \

        -n "${CT_EGLIBC_OPTION_GROUPS_FILE}" -a \

        -f "${CT_EGLIBC_OPTION_GROUPS_FILE}"

    CT_DoExecLog ALL cp "${CT_EGLIBC_OPTION_GROUPS_FILE}" "${CT_CONFIG_DIR}/eglibc.config"

    # NSS configuration

    if grep -E '^OPTION_EGLIBC_NSSWITCH[[:space:]]*=[[:space:]]*n' "${CT_EGLIBC_OPTION_GROUPS_FILE}" >/dev/null 2>&1; then

        CT_DoLog DEBUG "Using fixed-configuration nsswitch facility"

        if [ "${CT_EGLIBC_BUNDLED_NSS_CONFIG}" = "y" ]; then

            nss_config="${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}/nss/fixed-nsswitch.conf"

        else

            nss_config="${CT_EGLIBC_NSS_CONFIG_FILE}"

        fi

        CT_TestOrAbort "NSS config file not found!" -n "${nss_config}" -a -f "${nss_config}"

        CT_DoExecLog ALL cp "${nss_config}" "${CT_CONFIG_DIR}/nsswitch.config"

        echo "OPTION_EGLIBC_NSSWITCH_FIXED_CONFIG = ${CT_CONFIG_DIR}/nsswitch.config" \

            >> "${CT_CONFIG_DIR}/eglibc.config"

        if [ "${CT_EGLIBC_BUNDLED_NSS_FUNCTIONS}" = "y" ]; then

            nss_functions="${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}/nss/fixed-nsswitch.functions"

        else

            nss_functions="${CT_EGLIBC_NSS_FUNCTIONS_FILE}"

        fi

        CT_TestOrAbort "NSS functions file not found!" -n "${nss_functions}" -a -f "${nss_functions}"

        CT_DoExecLog ALL cp "${nss_functions}" "${CT_CONFIG_DIR}/nsswitch.functions"

        echo "OPTION_EGLIBC_NSSWITCH_FIXED_FUNCTIONS = ${CT_CONFIG_DIR}/nsswitch.functions" \

            >> "${CT_CONFIG_DIR}/eglibc.config"

    else

        CT_DoLog DEBUG "Using full-blown nsswitch facility"

    fi

    CT_EndStep

}