# This file declares functions to install the uClibc C library

# Copyright 2007 Yann E. MORIN

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

# Download uClibc

do_libc_get() {

	libc_src="http://www.uclibc.org/downloads

              http://www.uclibc.org/downloads/snapshots

              http://www.uclibc.org/downloads/old-releases"

    # For uClibc, we have almost every thing: releases, and snapshots

    # for the last month or so. We'll have to deal with svn revisions

    # later...

    CT_GetFile "${CT_LIBC_FILE}" ${libc_src}

    # uClibc locales

    [ "${CT_LIBC_UCLIBC_LOCALES}" = "y" ] && CT_GetFile "uClibc-locale-030818" ${libc_src}

    return 0

}

# Extract uClibc

do_libc_extract() {

    CT_ExtractAndPatch "${CT_LIBC_FILE}"

    # uClibc locales

    [ "${CT_LIBC_UCLIBC_LOCALES}" = "y" ] && CT_ExtractAndPatch "uClibc-locale-030818"

    return 0

}

# Check that uClibc has been previously configured

do_libc_check_config() {

    CT_DoStep INFO "Checking C library configuration"

    CT_TestOrAbort "You did not provide a uClibc config file!" -n "${CT_LIBC_UCLIBC_CONFIG_FILE}" -a -f "${CT_LIBC_UCLIBC_CONFIG_FILE}"

    cp "${CT_LIBC_UCLIBC_CONFIG_FILE}" "${CT_BUILD_DIR}/uClibc.config"

    if egrep '^KERNEL_SOURCE=' "${CT_LIBC_UCLIBC_CONFIG_FILE}" >/dev/null 2>&1; then

        CT_DoLog WARN "Your uClibc version refers to the kernel _sources_, which is bad."

        CT_DoLog WARN "I can't guarantee that our little hack will work. Please try to upgrade."

    fi

    CT_DoLog EXTRA "Munging uClibc configuration"

    mungeuClibcConfig "${CT_BUILD_DIR}/uClibc.config"

    CT_EndStep

}

# This functions installs uClibc's headers

do_libc_headers() {

    # Only need to install bootstrap uClibc headers for gcc-3.0 and above?  Or maybe just gcc-3.3 and above?

    # See also http://gcc.gnu.org/PR8180, which complains about the need for this step.

    grep -q 'gcc-[34]' "${CT_SRC_DIR}/${CT_CC_CORE_FILE}/ChangeLog" || return 0

    CT_DoStep INFO "Installing C library headers"

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

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

    # Simply copy files until uClibc has the ablity to build out-of-tree

    CT_DoLog EXTRA "Copying sources to build dir"

    { cd "${CT_SRC_DIR}/${CT_LIBC_FILE}"; tar cf - .; } |tar xf -

    # Retrieve the config file

    cp "${CT_BUILD_DIR}/uClibc.config" .config

    # uClibc uses the CROSS environment variable as a prefix to the

    # compiler tools to use.  Setting it to the empty string forces

    # use of the native build host tools, which we need at this

    # stage, as we don't have target tools yet.

    CT_DoLog EXTRA "Applying configuration"

    CT_DoYes "" |make CROSS= PREFIX="${CT_SYSROOT_DIR}/" oldconfig 2>&1 |CT_DoLog ALL

    CT_DoLog EXTRA "Building headers"

    make ${PARALLELMFLAGS} CROSS= PREFIX="${CT_SYSROOT_DIR}/" headers 2>&1 |CT_DoLog ALL

    CT_DoLog EXTRA "Installing headers"

    make CROSS= PREFIX="${CT_SYSROOT_DIR}/" install_dev 2>&1 |CT_DoLog ALL

    CT_EndStep

}

# This function build and install the full uClibc

do_libc() {

    CT_DoStep INFO "Installing C library"

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

    cd "${CT_BUILD_DIR}/build-libc"

    # Simply copy files until uClibc has the ablity to build out-of-tree

    CT_DoLog EXTRA "Copying sources to build dir"

    { cd "${CT_SRC_DIR}/${CT_LIBC_FILE}"; tar cf - .; } |tar xf -

    # Retrieve the config file

    cp "${CT_BUILD_DIR}/uClibc.config" .config

    # uClibc uses the CROSS environment variable as a prefix to the compiler

    # tools to use.  The newly built tools should be in our path, so we need

    # only give the correct name for them.

    # Note about CFLAGS: In uClibc, CFLAGS are generated by Rules.mak,

    # depending  on the configuration of the library. That is, they are tailored

    # to best fit the target. So it is useless and seems to be a bad thing to

    # use LIBC_EXTRA_CFLAGS here.

    CT_DoLog EXTRA "Applying configuration"

    CT_DoYes "" |make ${PARALLELMFLAGS}             \

                      CROSS=${CT_TARGET}-           \

                      PREFIX="${CT_SYSROOT_DIR}/"   \

                      oldconfig                     2>&1 |CT_DoLog ALL

    # We do _not_ want to strip anything for now, in case we specifically

    # asked for a debug toolchain, thus the STRIPTOOL= assignment

    CT_DoLog EXTRA "Building C library"

    make ${PARALLELMFLAGS}              \

         CROSS=${CT_TARGET}-            \

         PREFIX="${CT_SYSROOT_DIR}/"    \

         STRIPTOOL=true                 \

         all                            2>&1 |CT_DoLog ALL

    # YEM-FIXME: we want to install libraries in $SYSROOT/lib, but we don't want

    # to install headers in $SYSROOT/include, thus making only install_runtime.

    # Plus, the headers were previously installed earlier with install_dev, so

    # all should be well. Unfortunately, the install_dev target does not install

    # crti.o and consorts... :-( So reverting to target 'install'.

    # Note: PARALLELMFLAGS is not usefull for installation.

    # We do _not_ want to strip anything for now, in case we specifically

    # asked for a debug toolchain, thus the STRIPTOOL= assignment

    CT_DoLog EXTRA "Installing C library"

    make CROSS=${CT_TARGET}-            \

         PREFIX="${CT_SYSROOT_DIR}/"    \

         STRIPTOOL=true                 \

         install                        2>&1 |CT_DoLog ALL

    CT_EndStep

}

# This function is used to install those components needing the final C compiler

do_libc_finish() {

    :

}

# Initialises the .config file to sensible values

mungeuClibcConfig() {

    config_file="$1"

    munge_file="${CT_BUILD_DIR}/munge-uClibc-config.sed"

    # Hack our target in the config file.

    # Also remove stripping: its the responsibility of the

    # firmware builder to strip or not.

    cat > "${munge_file}" <<-ENDSED

s/^(TARGET_.*)=y$/# \\1 is not set/

s/^# TARGET_${CT_KERNEL_ARCH} is not set/TARGET_${CT_KERNEL_ARCH}=y/

s/^TARGET_ARCH=".*"/TARGET_ARCH="${CT_KERNEL_ARCH}"/

s/.*(DOSTRIP).*/# \\1 is not set/

ENDSED

    # Accomodate for old and new uClibc versions, where the

    # way to select between big/little endian has changed

    case "${CT_ARCH_BE},${CT_ARCH_LE}" in

        y,) cat >> "${munge_file}" <<-ENDSED

s/.*(ARCH_LITTLE_ENDIAN).*/# \\1 is not set/

s/.*(ARCH_BIG_ENDIAN).*/\\1=y/

s/.*(ARCH_WANTS_LITTLE_ENDIAN).*/# \\1 is not set/

s/.*(ARCH_WANTS_BIG_ENDIAN).*/\\1=y/

ENDSED

        ;;

        ,y) cat >> "${munge_file}" <<-ENDSED

s/.*(ARCH_LITTLE_ENDIAN).*/\\1=y/

s/.*(ARCH_BIG_ENDIAN).*/# \\1 is not set/

s/.*(ARCH_WANTS_LITTLE_ENDIAN).*/\\1=y/

s/.*(ARCH_WANTS_BIG_ENDIAN).*/# \\1 is not set/

ENDSED

        ;;

    esac

    # Accomodate for old and new uClibc version, where the

    # way to select between hard/soft float has changed

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

        y,) cat >> "${munge_file}" <<-ENDSED

s/.*(HAS_FPU).*/\\1=y/

s/.*(UCLIBC_HAS_FPU).*/\\1=y/

ENDSED

            ;;

        ,y) cat >> "${munge_file}" <<-ENDSED

s/.*(HAS_FPU).*/\\# \\1 is not set/

s/.*(UCLIBC_HAS_FPU).*/# \\1 is not set/

ENDSED

            ;;

    esac

    # Change paths to work with crosstool

    # From http://www.uclibc.org/cgi-bin/viewcvs.cgi?rev=16846&view=rev

    #  " we just want the kernel headers, not the whole kernel source ...

    #  " so people may need to update their paths slightly

    quoted_kernel_source=`echo "${CT_HEADERS_DIR}" | sed -r -e 's,/include/?$,,; s,/,\\\\/,g;'`

    quoted_headers_dir=`echo ${CT_HEADERS_DIR} | sed -r -e 's,/,\\\\/,g;'`

    # CROSS_COMPILER_PREFIX is left as is, as the CROSS parameter is forced on the command line

    # DEVEL_PREFIX is left as '/usr/' because it is post-pended to $PREFIX, wich is the correct value of ${PREFIX}/${TARGET}

    # Some (old) versions of uClibc use KERNEL_SOURCE (which is _wrong_), and

    # newer versions use KERNEL_HEADERS (which is right). See:

    cat >> "${munge_file}" <<-ENDSED

s/^DEVEL_PREFIX=".*"/DEVEL_PREFIX="\\/usr\\/"/

s/^RUNTIME_PREFIX=".*"/RUNTIME_PREFIX="\\/"/

s/^SHARED_LIB_LOADER_PREFIX=.*/SHARED_LIB_LOADER_PREFIX="\\/lib\\/"/

s/^KERNEL_SOURCE=".*"/KERNEL_SOURCE="${quoted_kernel_source}"/

s/^KERNEL_HEADERS=".*"/KERNEL_HEADERS="${quoted_headers_dir}"/

s/^UCLIBC_DOWNLOAD_PREGENERATED_LOCALE=y/\\# UCLIBC_DOWNLOAD_PREGENERATED_LOCALE is not set/

ENDSED

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

        if grep UCLIBC_EXTRA_CFLAGS extra/Configs/Config.in >/dev/null 2>&1; then

            # Good, there is special provision for such things as -pipe!

            cat >> "${munge_file}" <<-ENDSED

s/^(UCLIBC_EXTRA_CFLAGS=".*)"$/\\1 -pipe"/

ENDSED

        else

            # Hack our -pipe into WARNINGS, which will be internally incorporated to

            # CFLAGS. This a dirty hack, but yet needed

            cat >> "${munge_file}" <<-ENDSED

s/^(WARNINGS=".*)"$/\\1 -pipe"/

ENDSED

        fi

    fi

    # Force on options needed for C++ if we'll be making a C++ compiler.

    # Note that the two PREGEN_LOCALE and the XLOCALE lines may be missing

    # entirely if LOCALE is not set.  If LOCALE was already set, we'll

    # assume the user has already made all the appropriate generation

    # arrangements.  Note that having the uClibc Makefile download the

    # pregenerated locales is not compatible with crosstool; besides,

    # crosstool downloads them as part of getandpatch.sh.

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

        cat >> "${munge_file}" <<-ENDSED

s/^# DO_C99_MATH is not set/DO_C99_MATH=y/

s/^# UCLIBC_CTOR_DTOR is not set/UCLIBC_CTOR_DTOR=y/

# Add these three lines when doing C++?

#s/^# UCLIBC_HAS_WCHAR is not set/UCLIBC_HAS_WCHAR=y/

#s/^# UCLIBC_HAS_LOCALE is not set/UCLIBC_HAS_LOCALE=y\\nUCLIBC_PREGENERATED_LOCALE_DATA=y\\n\\# UCLIBC_DOWNLOAD_PREGENERATED_LOCALE_DATA is not set\\n\\# UCLIBC_HAS_XLOCALE is not set/

#s/^# UCLIBC_HAS_GNU_GETOPT is not set/UCLIBC_HAS_GNU_GETOPT=y/

ENDSED

    fi

    # Force on debug options if asked for

    case "${CT_LIBC_UCLIBC_DEBUG_LEVEL}" in

      0)

        cat >>"${munge_file}" <<-ENDSED

s/^PTHREADS_DEBUG_SUPPORT=y/# PTHREADS_DEBUG_SUPPORT is not set/

s/^DODEBUG=y/# DODEBUG is not set/

s/^DODEBUG_PT=y/# DODEBUG_PT is not set/

s/^DOASSERTS=y/# DOASSERTS is not set/

s/^SUPPORT_LD_DEBUG=y/# SUPPORT_LD_DEBUG is not set/

s/^SUPPORT_LD_DEBUG_EARLY=y/# SUPPORT_LD_DEBUG_EARLY is not set/

s/^UCLIBC_MALLOC_DEBUGGING=y/# UCLIBC_MALLOC_DEBUGGING is not set/

ENDSED

        ;;

      1)

        cat >>"${munge_file}" <<-ENDSED

s/^# PTHREADS_DEBUG_SUPPORT is not set.*/PTHREADS_DEBUG_SUPPORT=y/

s/^# DODEBUG is not set.*/DODEBUG=y/

s/^DODEBUG_PT=y/# DODEBUG_PT is not set/

s/^DOASSERTS=y/# DOASSERTS is not set/

s/^SUPPORT_LD_DEBUG=y/# SUPPORT_LD_DEBUG is not set/

s/^SUPPORT_LD_DEBUG_EARLY=y/# SUPPORT_LD_DEBUG_EARLY is not set/

s/^UCLIBC_MALLOC_DEBUGGING=y/# UCLIBC_MALLOC_DEBUGGING is not set/

ENDSED

        ;;

      2)

        cat >>"${munge_file}" <<-ENDSED

s/^# PTHREADS_DEBUG_SUPPORT is not set.*/PTHREADS_DEBUG_SUPPORT=y/

s/^# DODEBUG is not set.*/DODEBUG=y/

s/^# DODEBUG_PT is not set.*/DODEBUG_PT=y/

s/^# DOASSERTS is not set.*/DOASSERTS=y/

s/^# SUPPORT_LD_DEBUG is not set.*/SUPPORT_LD_DEBUG=y/

s/^# SUPPORT_LD_DEBUG_EARLY is not set.*/SUPPORT_LD_DEBUG_EARLY=y/

s/^# UCLIBC_MALLOC_DEBUGGING is not set/UCLIBC_MALLOC_DEBUGGING=y/

ENDSED

        ;;

    esac

    sed -r -i -f "${munge_file}" "${config_file}"

    rm -f "${munge_file}"

}