# eglibc build functions (initially by Thomas JOURDAN).

 # 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}"

         # 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

         # so we have to make symlinks from the existing to the missing

         # Fortunately for us, [ -d foo ], when foo is a symlink to a

         # directory, returns true!

         [ -d "${addon}" ] || ln -s "eglibc-${addon}-${CT_LIBC_VERSION}" "${addon}"

         [ -d "eglibc-${addon}-${CT_LIBC_VERSION}" ] || ln -s "${addon}" "eglibc-${addon}-${CT_LIBC_VERSION}"

         CT_Patch nochdir "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

 }

 # This function installs the eglibc headers needed to build the core compiler

 do_libc_headers() {

     # Instead of doing two time the same actions, headers will

     # be installed with start files

     :

 }

 # Build and install start files

 do_libc_start_files() {

     CT_DoStep INFO "Installing C library headers / start files"

     mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"

     cd "${CT_BUILD_DIR}/build-libc-startfiles"

     CT_DoLog EXTRA "Configuring C library"

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

         CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config

     fi

     cross_cc=$(CT_Which "${CT_TARGET}-gcc")

     cross_cxx=$(CT_Which "${CT_TARGET}-g++")

     cross_ar=$(CT_Which "${CT_TARGET}-ar")

     cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")

     CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"

     CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"

     CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"

     CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"

     BUILD_CC="${CT_BUILD}-gcc"                          \

     CC=${cross_cc}                                      \

     CXX=${cross_cxx}                                    \

     AR=${cross_ar}                                      \

     RANLIB=${cross_ranlib}                              \

     CT_DoExecLog CFG                                    \

     "${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}/configure" \

         --prefix=/usr                                   \

         --with-headers="${CT_HEADERS_DIR}"              \

         --build="${CT_BUILD}"                           \

         --host="${CT_TARGET}"                           \

         --disable-profile                               \

         --without-gd                                    \

         --without-cvs                                   \

         --enable-add-ons

     CT_DoLog EXTRA "Installing C library headers"

     # use the 'install-headers' makefile target to install the

     # headers

     CT_DoExecLog ALL                    \

     make install-headers                \

          install_root=${CT_SYSROOT_DIR} \

          install-bootstrap-headers=yes

     CT_DoLog EXTRA "Installing C library start files"

     # there are a few object files needed to link shared libraries,

     # which we build and install by hand

     CT_DoExecLog ALL mkdir -p ${CT_SYSROOT_DIR}/usr/lib

     CT_DoExecLog ALL make csu/subdir_lib

     CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \

         ${CT_SYSROOT_DIR}/usr/lib

     # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.  

     # However, since we will never actually execute its code, 

     # it doesn't matter what it contains.  So, treating '/dev/null' 

     # as a C source file, we produce a dummy 'libc.so' in one step

     CT_DoExecLog ALL ${cross_cc} -nostdlib -nostartfiles -shared -x c /dev/null -o ${CT_SYSROOT_DIR}/usr/lib/libc.so

     CT_EndStep

 }

 # This function builds and install the full glibc

 do_libc() {

     local -a extra_config

     CT_DoStep INFO "Installing C library"

     mkdir -p "${CT_BUILD_DIR}/build-libc"

     cd "${CT_BUILD_DIR}/build-libc"

     CT_DoLog EXTRA "Configuring C library"

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

         CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config

     fi

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

         OPTIMIZE=-Os

     else

         OPTIMIZE=-O2

     fi

     # Add some default glibc config options if not given by user.

     # We don't need to be conditional on wether the user did set different

     # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config

     extra_config+=("--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')")

     case "${CT_THREADS}" in

         nptl)           extra_config+=("--with-__thread" "--with-tls");;

         linuxthreads)   extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;

         none)           extra_config+=("--without-__thread" "--without-nptl")

                         case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in

                             *-tls*) ;;

                             *) extra_config+=("--without-tls");;

                         esac

                         ;;

     esac

     case "${CT_SHARED_LIBS}" in

         y) extra_config+=("--enable-shared");;

         *) extra_config+=("--disable-shared");;

     esac

     case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in

         y,) extra_config+=("--with-fp");;

         ,y) extra_config+=("--without-fp");;

     esac

     case "$(do_libc_add_ons_list ,)" in

         "") ;;

         *)  extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;

     esac

     extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"

     cross_cc=$(CT_Which "${CT_TARGET}-gcc")    

     CT_DoLog DEBUG "Using gcc for target:     '${cross_cc}'"

     CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"

     CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"

     CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"

     BUILD_CC="${CT_BUILD}-gcc"                                      \

     CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"  \

     CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \

     AR=${CT_TARGET}-ar                                              \

     RANLIB=${CT_TARGET}-ranlib                                      \

     CT_DoExecLog CFG                                                \

     "${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}/configure"             \

         --prefix=/usr                                               \

         --with-headers="${CT_HEADERS_DIR}"                          \

         --build=${CT_BUILD}                                         \

         --host=${CT_TARGET}                                         \

         --disable-profile                                           \

         --without-gd                                                \

         --without-cvs                                               \

         "${extra_config[@]}"                                        \

         ${CT_LIBC_GLIBC_EXTRA_CONFIG}

     CT_DoLog EXTRA "Building C library"

     # eglibc build hacks

     # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html

     case "${CT_ARCH},${CT_ARCH_CPU}" in

         powerpc,8??)

             CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"

             EGLIBC_BUILD_ASFLAGS="-DBROKEN_PPC_8xx_CPU15";;

     esac

     CT_DoExecLog ALL make ASFLAGS="${EGLIBC_BUILD_ASFLAGS}"

     CT_DoLog EXTRA "Installing C library"

     CT_DoExecLog ALL make install install_root="${CT_SYSROOT_DIR}"

     CT_EndStep

 }

 # This function finishes the glibc install

 do_libc_finish() {

     # Nothing to be done for eglibc

     :

 }

 # Build up the addons list, separated with $1

 do_libc_add_ons_list() {

     local sep="$1"

     local addons_list=$(echo "${CT_LIBC_ADDONS_LIST//,/${sep}}" |tr -s ,)

     case "${CT_THREADS}" in

         none)   ;;

         *)      addons_list="${addons_list}${sep}${CT_THREADS}";;

     esac

     [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"

     addons_list="${addons_list%%${sep}}"

     echo "${addons_list##${sep}}"

 }