# This file adds functions to build glibc

 # Copyright 2007 Yann E. MORIN

 # Licensed under the GPL v2. See COPYING in the root of this package

 # Add the definitions common to glibc and eglibc

 #   do_libc_headers

 #   do_libc_start_files

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

 # Download glibc

 do_libc_get() {

     local date

     local version

     local -a addons_list

     addons_list=($(do_libc_add_ons_list " "))

     # Main source

     CT_GetFile "glibc-${CT_LIBC_VERSION}"               \

                {ftp,http}://ftp.gnu.org/gnu/glibc       \

                ftp://gcc.gnu.org/pub/glibc/releases     \

                ftp://gcc.gnu.org/pub/glibc/snapshots

     # C library addons

     for addon in "${addons_list[@]}"; do

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

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

         CT_GetFile "glibc-${addon}-${CT_LIBC_VERSION}"      \

                    {ftp,http}://ftp.gnu.org/gnu/glibc       \

                    ftp://gcc.gnu.org/pub/glibc/releases     \

                    ftp://gcc.gnu.org/pub/glibc/snapshots

     done

     return 0

 }

 # Extract glibc

 do_libc_extract() {

     local -a addons_list

     addons_list=($(do_libc_add_ons_list " "))

     CT_Extract "glibc-${CT_LIBC_VERSION}"

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

     CT_Patch nochdir "glibc" "${CT_LIBC_VERSION}"

     # C library addons

     for addon in "${addons_list[@]}"; do

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

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

         CT_Extract nochdir "glibc-${addon}-${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 "${addon}" ] || CT_DoExecLog ALL ln -s "glibc-${addon}-${CT_LIBC_VERSION}" "${addon}"

         [ -d "glibc-${addon}-${CT_LIBC_VERSION}" ] || CT_DoExecLog ALL ln -s "${addon}" "glibc-${addon}-${CT_LIBC_VERSION}"

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

     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.

     sleep 2

     find . -type f -name configure -exec touch {} \; 2>&1 |CT_DoLog ALL

     CT_Popd

     return 0

 }

 # There is nothing to do for glibc check config

 do_libc_check_config() {

     :

 }

 # 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"

     # 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

     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

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

         extra_config+=("--disable-versioning")

     fi

     if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then

         extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")

     fi

     case "$(do_libc_add_ons_list ,)" in

         "") ;;

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

     esac

     extra_config+=("$(do_libc_min_kernel_config)")

     # Add some default CC args

     glibc_version="$( grep -E '\<VERSION\>' "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/version.h"  \

                       |cut -d '"' -f 2

                     )"

     glibc_version_major=$(echo ${glibc_version} |sed -r -e 's/^([[:digit:]]+).*/\1/')

     glibc_version_minor=$(echo ${glibc_version} |sed -r -e 's/^[[:digit:]]+[\.-_]([[:digit:]]+).*/\1/')

     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \

          -o ${glibc_version_major} -gt 2                                    ]; then

         # Don't use -pipe: configure chokes on it for glibc >= 2.6.

         CT_Test 'Removing "-pipe" for use with glibc>=2.6' "${CT_USE_PIPES}" = "y"

         extra_cc_args="${CT_CFLAGS_FOR_HOST/-pipe}"

     else

         extra_cc_args="${CT_CFLAGS_FOR_HOST}"

     fi

     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}'"

     # Pre-seed the configparms file with values from the config option

     printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms

     # For glibc 2.3.4 and later we need to set some autoconf cache

     # variables, because nptl/sysdeps/pthread/configure.in does not

     # work when cross-compiling.

     if [ "${CT_THREADS}" = "nptl" ]; then

         echo libc_cv_forced_unwind=yes

         echo libc_cv_c_cleanup=yes

     fi >config.cache

     # ./configure is mislead by our tools override wrapper for bash

     # so just tell it where the real bash is _on_the_target_!

     # Notes:

     # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL

     # - ${BASH_SHELL}            is only used to set BASH

     # - ${BASH}                  is only used to set the shebang

     #                            in two scripts to run on the target

     # So we can safely bypass bash detection at compile time.

     # Should this change in a future glibc release, we'd better

     # directly mangle the generated scripts _after_ they get built,

     # or even after they get installed... glibc is such a sucker...

     echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache

     # Configure with --prefix the way we want it on the target...

     # There are a whole lot of settings here.  You'll probably want

     # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG

     # Compare these options with the ones used when installing the glibc headers above - they're different.

     # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory" 

     # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html. 

     # Set BUILD_CC, or you won't be able to build datafiles

     # Set --build, else glibc-2.3.2 will think you're not cross-compiling, and try to run the test programs

     # OK. I'm fed up with those folks telling me what I should do.

     # I don't configure nptl? Well, maybe that's purposedly because

     # I don't want nptl! --disable-sanity-checks will shut up those

     # silly messages. GNU folks again, he?

     BUILD_CC="${CT_BUILD}-gcc"                                      \

     CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O2"  \

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

     AR=${CT_TARGET}-ar                                              \

     RANLIB=${CT_TARGET}-ranlib                                      \

     CT_DoExecLog CFG                                                \

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

         --prefix=/usr                                               \

         --build=${CT_BUILD}                                         \

         --host=${CT_TARGET}                                         \

         --without-cvs                                               \

         --disable-profile                                           \

         --disable-debug                                             \

         --without-gd                                                \

         --disable-sanity-checks                                     \

         --cache-file=config.cache                                   \

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

         "${extra_config[@]}"                                        \

         ${CT_LIBC_GLIBC_EXTRA_CONFIG}

     # glibc initial 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)"

 	    GLIBC_INITIAL_BUILD_ASFLAGS="-DBROKEN_PPC_8xx_CPU15";;

     esac

     # If this fails with an error like this:

     # ...  linux/autoconf.h: No such file or directory 

     # then you need to set the KERNELCONFIG variable to point to a .config file for this arch.

     # The following architectures are known to need kernel .config: alpha, arm, ia64, s390, sh, sparc

     # Note: LD and RANLIB needed by glibc-2.1.3's c_stub directory, at least on macosx

     CT_DoLog EXTRA "Building C library"

     CT_DoExecLog ALL make LD=${CT_TARGET}-ld                        \

                           RANLIB=${CT_TARGET}-ranlib                \

                           OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \

                           ASFLAGS="${GLIBC_INITIAL_BUILD_ASFLAGS}"  \

                           PARALLELMFLAGS="${PARALLELMFLAGS}"        \

                           all

     CT_DoLog EXTRA "Installing C library"

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

                           ${LIBC_SYSROOT_ARG}                       \

                           OBJDUMP_FOR_HOST="${CT_TARGET}-objdump"   \

                           PARALLELMFLAGS="${PARALLELMFLAGS}"        \

                           install

     # This doesn't seem to work when building a crosscompiler,

     # as it tries to execute localedef using the just-built ld.so!?

     #CT_DoLog EXTRA "Installing locales"

     #make localedata/install-locales install_root=${SYSROOT} 2>&1 |CT_DoLog ALL

     # Fix problems in linker scripts.

     #

     # Remove lines containing BUG per http://sources.redhat.com/ml/bug-glibc/2003-05/msg00055.html,

     # needed to fix gcc-3.2.3/glibc-2.3.2 targeting arm

     # No need to look into the lib64/ dirs here and there, they point to the

     # corresponding lib/ directories.

     #

     # To make "strip *.so.*" not fail (ptxdist does this), rename to .so_orig rather than .so.orig

     CT_DoLog EXTRA "Fixing C library linker scripts"

     for file in libc.so libpthread.so libgcc_s.so; do

         for dir in lib usr/lib; do

             if [ -f "${CT_SYSROOT_DIR}/${dir}/${file}" -a ! -L ${CT_SYSROOT_DIR}/$lib/$file ]; then

                 CT_DoExecLog ALL cp -v "${CT_SYSROOT_DIR}/${dir}/${file}" "${CT_SYSROOT_DIR}/${dir}/${file}_orig"

                 CT_DoLog DEBUG "Fixing '${CT_SYS_ROOT_DIR}/${dir}/${file}'"

                 CT_DoExecLog ALL sed -i -r -e '/BUG in libc.scripts.output-format.sed/d' "${CT_SYSROOT_DIR}/${dir}/${file}"

             fi

         done

     done

     CT_EndStep

 }

 # Build up the addons list, separated with $1

 do_libc_add_ons_list() {

     local sep="$1"

     local addons_list=$(echo "${CT_LIBC_ADDONS_LIST}" |sed -r -e "s/[ ,]/${sep}/g;")

     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"

     # Remove duplicate, leading and trailing separators

     echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"

 }