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#! /bin/sh

#

# Update a local Subversion tree from the GCC repository, with an emphasis

# on treating generated files correctly, so that autoconf, gperf et

# al are not required for the ``end'' user.

#

# (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation

# Originally by Gerald Pfeifer , August 1998.

#

# This script is Free Software, and it can be copied, distributed and

# modified as defined in the GNU General Public License.  A copy of

# its license can be downloaded from http://www.gnu.org/copyleft/gpl.html

#

#

# By default all command-line options are passed to `svn update` in

# addition to $UPDATE_OPTIONS (defined below). If the first parameter

# reads --nostdflags, $UPDATE_OPTIONS as well as this parameter itself

# are omitted.

#

# If the first parameter reads --patch, the second parameter is considered

# a patch file.

#

# If the first parameter is --touch, no svn operation will be performed,

# only generated files that appear to be out of date in the local tree

# will be touched.

#

# If the first parameter is --list, a list of the generated files and

# their dependencies will be printed; --help prints this message.

#

# If the first parameter is --silent, this script prints nothing other

# than error messages; the second parameter is then interpreted as above.

#

# Examples:

#

# contrib/gcc_update -r 8712

# contrib/gcc_update --patch some-patch

# contrib/gcc_update --touch

# contrib/gcc_update --list

# SVN command

GCC_SVN=${GCC_SVN-${SVN-svn}}

# Default options used when updating via SVN (none).

UPDATE_OPTIONS=""

######## Anything below shouldn't be changed by regular users.

# Arrange for the value of $0 to be available for functions

self=$0

# This function prints its arguments to standard output unless

# "silent" is set.

unset silent

chat () {

    if [ -z "$silent" ]; then

        echo "$@"

    fi

}

# This function prints a list of all generated files, along with their

# dependencies.  Note that only one target is supported per line: the

# colon is stripped from the output.

files_and_dependencies () {

    sed -e 's/ *#.*//' -e '/^$/d' -e 's/://' <<\EOF

# fixincludes

fixincludes/configure: fixincludes/configure.ac fixincludes/aclocal.m4

fixincludes/config.h.in: fixincludes/configure.ac fixincludes/aclocal.m4

# intl library

intl/plural.c: intl/plural.y

intl/configure: intl/configure.ac intl/aclocal.m4

intl/config.h.in: intl/configure.ac intl/aclocal.m4

# Now, proceed to gcc automatically generated files

gcc/configure: gcc/configure.ac

gcc/cstamp-h.in: gcc/configure.ac

gcc/config.in: gcc/cstamp-h.in

gcc/fixinc/fixincl.x: gcc/fixinc/fixincl.tpl gcc/fixinc/inclhack.def

gcc/config/arm/arm-tune.md: gcc/config/arm/arm-cores.def gcc/config/arm/gentune.sh

# And then, language-specific files

gcc/cp/cfns.h: gcc/cp/cfns.gperf

gcc/java/keyword.h: gcc/java/keyword.gperf

# testsuite

# Without this, _Pragma3.c can have a false negative.

gcc/testsuite/gcc.dg/cpp/_Pragma3.c: gcc/testsuite/gcc.dg/cpp/mi1c.h

# And libraries, at last

libbanshee/configure: libbanshee/configure.ac

libmudflap/configure: libmudflap/configure.ac

libobjc/configure: libobjc/configure.ac

zlib/aclocal.m4: zlib/configure.ac zlib/acinclude.m4

zlib/Makefile.in: zlib/Makefile.am zlib/configure.ac zlib/aclocal.m4

zlib/configure: zlib/configure.ac zlib/aclocal.m4

fastjar/aclocal.m4: fastjar/configure.ac

fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.ac fastjar/aclocal.m4

fastjar/configure: fastjar/configure.ac fastjar/aclocal.m4

boehm-gc/aclocal.m4: boehm-gc/configure.ac

boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.ac boehm-gc/aclocal.m4

boehm-gc/configure: boehm-gc/configure.ac boehm-gc/aclocal.m4

libada/configure: libada/configure.ac

libffi/aclocal.m4: libffi/configure.ac libffi/acinclude.m4

libffi/Makefile.in: libffi/Makefile.am libffi/configure.ac libffi/aclocal.m4

libffi/configure: libffi/configure.ac libffi/aclocal.m4

libffi/fficonfig.h.in: libffi/configure.ac libffi/aclocal.m4

libgfortran/aclocal.m4: libgfortran/configure.ac libgfortran/acinclude.m4

libgfortran/Makefile.in: libgfortran/Makefile.am libgfortran/configure.ac libgfortran/aclocal.m4

libgfortran/configure: libgfortran/configure.ac libgfortran/aclocal.m4

libjava/aclocal.m4: libjava/configure.ac

libjava/Makefile.in: libjava/Makefile.am libjava/configure.ac libjava/aclocal.m4

libjava/configure: libjava/configure.ac libjava/aclocal.m4

libjava/libltdl/aclocal.m4: libjava/libltdl/configure.ac libjava/libltdl/acinclude.m4

libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4

libjava/libltdl/configure: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4

libjava/libltdl/config-h.in: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4

libcpp/aclocal.m4: libcpp/configure.ac

libcpp/Makefile.in: libcpp/configure.ac libcpp/aclocal.m4

libcpp/configure: libcpp/configure.ac libcpp/aclocal.m4

libgomp/aclocal.m4: libgomp/configure.ac libgomp/acinclude.m4

libgomp/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4

libgomp/testsuite/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4

libgomp/configure: libgomp/configure.ac libgomp/aclocal.m4

libgomp/config.h.in: libgomp/configure.ac libgomp/aclocal.m4

# Top level

Makefile.in: Makefile.tpl Makefile.def

configure: configure.in config/acx.m4

EOF

}

# This function touches generated files such that the ``end'' user does

# not have to rebuild them.

touch_files () {

    rm -f Makefile.$$

    echo 'all: \' > Makefile.$$

    files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$

    echo '; @true' >> Makefile.$$

    files_and_dependencies | sed 's, ,: ,' >> Makefile.$$

    files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$

    echo ':' >> Makefile.$$

    echo '      @for f in $? $@; do test -f $$f || exit 0; done; \' >> Makefile.$$

    echo '      echo Touching $@...; \' >> Makefile.$$

    chat '      echo Touching $@... 1>&2; \' >> Makefile.$$

    echo '      touch $@' >> Makefile.$$

    files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$

    # We would have to explicitly shut off the "Entering... Leaving..."

    # messages through "--no-print-directory" to handle the case when

    # we were called from a recursive invocation (i.e. "$(MAKE)" in a

    # Makefile, not just make).  Passing only "-s" doesn't help then,

    # because make has helpfully added "-w" to MAKEFLAGS automatically.

    # Unfortunately we do not require GNU make other than for building

    # and testing, so let's just grep known text explicitly echoed by

    # the rule.

    while ${MAKE-make} -s -f Makefile.$$ all | grep Touching > /dev/null; do

      sleep 1

    done 2>&1

    rm -f Makefile.$$

}

# Whenever we update the tree or install a patch, we may be modifying

# this script.  By re-execing it, we ensure that the appropriate

# dependencies and rules will be used.

touch_files_reexec () {

    chat "Adjusting file timestamps"

    exec ${CONFIG_SHELL-/bin/sh} $self ${silent+"--silent"} --touch

}

# This functions applies a patch to an existing tree.

apply_patch () {

    if [ -f "$1" ]; then

        echo "Applying patch file $1"

        case $1 in

        *gz)

            gzip -d -c "$1" | patch -p1 ;;

        *bz2)

            bzip2 -d -c "$1" | patch -p1 ;;

        *)

            patch -p1 < "$1";;

        esac

    fi

    touch_files_reexec

}

# Check whether this indeed looks like a local tree.

if [ ! -f gcc/version.c ]; then

    echo "This does not seem to be a GCC tree!"

    exit

fi

case "$1" in

--silent)

    silent=t

    shift

    ;;

esac

case "$1" in

# First of all, check whether we are going to process a patch.

--patch)

    if test "$#" != 2; then

        echo "$1" expects only one argument >&2

        exit 1

    fi

    apply_patch "${2}"

    exit $?

    ;;

--touch)

    if test "$#" != 1; then

        echo "$1" does not expect any argument >&2

        exit 1

    fi

    touch_files

    exit $?

    ;;

--list)

    if test "$#" != 1; then

        echo "$1" does not expect any argument >&2

        exit 1

    fi

    files_and_dependencies | sed 's/ /: /'

    exit $?

    ;;

--help)

    sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\

\

p

}' \

        -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0

    exit $?

    ;;

esac

# Check whether this indeed looks like a local SVN tree.

if [ ! -d .svn ]; then

    echo "This does not seem to be a GCC SVN tree!"

    exit

fi

# Check command-line options

if [ x"${1}"x = x"--nostdflags"x ]; then

    shift

else

    set -- $UPDATE_OPTIONS ${1+"$@"}

fi

chat "Updating SVN tree"

$GCC_SVN ${silent+-q}  --non-interactive update ${1+"$@"}

if [ $? -ne 0 ]; then

    (touch_files_reexec)

    echo "SVN update of full tree failed." >&2

    exit 1

fi

{

  date

  echo "`TZ=UTC date` (revision `svnversion .`)"

} > LAST_UPDATED

touch_files_reexec