contrib/gcc_update

   1 #! /bin/sh
   2 #
   3 # Update a local CVS tree from the GCC repository, with an emphasis
   4 # on treating generated files correctly, so that autoconf, gperf et
   5 # al are not required for the ``end'' user.
   6 #
   7 # By default all command-line options are passed to `cvs update` in
   8 # addition to $UPDATE_OPTIONS (defined below). If the first parameter
   9 # reads --nostdflags, $UPDATE_OPTIONS as well as this parameter itself
  10 # are omitted.
  11 #
  12 # If the first parameter reads --patch, the second parameter is considered
  13 # a patch file.
  14 #
  15 # If the first parameter is --touch, no cvs operation will be performed,
  16 # only generated files that appear to be out of date in the local tree
  17 # will be touched.
  18 #
  19 # If the first parameter is --list, a list of the generated files and
  20 # their dependencies will be printed; --help prints this message.
  21 #
  22 # Examples:
  23 #
  24 # contrib/gcc_update -r gcc_latest_snapshot
  25 # contrib/gcc_update -A
  26 # contrib/gcc_update --nostdflags -P -r gcc-2_95-branch gcc/testsuite
  27 # contrib/gcc_update --patch some-patch
  28 # contrib/gcc_update --touch
  29 # contrib/gcc_update --list
  30 #
  31 #
  32 # (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation
  33 # Originally by Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>, August 1998.
  34 #
  35 # This script is Free Software, and it can be copied, distributed and
  36 # modified as defined in the GNU General Public License.  A copy of
  37 # its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
  38
  39
  40 # CVS command
  41 GCC_CVS=${GCC_CVS-${CVS-cvs}}
  42 # Default options used when updating via CVS.
  43 UPDATE_OPTIONS=-Pd
  44 # Use -P to prune empty directories.
  45 # Use -d to create any directories that exist in the repository but not
  46 #           locally.
  47 # Use -A to reset any sticky tags, dates, or `-k' options.
  48
  49 ######## Anything below shouldn't be changed by regular users.
  50
  51 # Arrange for the value of $0 to be available for functions
  52 self=$0
  53
  54 # This function prints a list of all generated files, along with their
  55 # dependencies.  Note that only one target is supported per line: the
  56 # colon is stripped from the output.
  57 files_and_dependencies () {
  58     sed -e 's/ *#.*//' -e '/^$/d' -e 's/://' <<\EOF
  59 # intl library
  60 intl/plural.c: intl/plural.y
  61 intl/configure: intl/configure.ac intl/aclocal.m4
  62 intl/config.h.in: intl/configure.ac intl/aclocal.m4
  63 # Now, proceed to gcc automatically generated files
  64 gcc/configure: gcc/configure.ac
  65 gcc/cstamp-h.in: gcc/configure.ac
  66 gcc/config.in: gcc/cstamp-h.in
  67 gcc/fixinc/fixincl.x: gcc/fixinc/fixincl.tpl gcc/fixinc/inclhack.def
  68 # And then, language-specific files
  69 gcc/cp/cfns.h: gcc/cp/cfns.gperf
  70 gcc/java/keyword.h: gcc/java/keyword.gperf
  71 # testsuite
  72 # Without this, _Pragma3.c can have a false negative.
  73 gcc/testsuite/gcc.dg/cpp/_Pragma3.c: gcc/testsuite/gcc.dg/cpp/mi1c.h
  74 # And libraries, at last
  75 libbanshee/configure: libbanshee/configure.ac
  76 libmudflap/configure: libmudflap/configure.in
  77 libobjc/configure: libobjc/configure.ac
  78 zlib/aclocal.m4: zlib/configure.ac zlib/acinclude.m4
  79 zlib/Makefile.in: zlib/Makefile.am zlib/configure.ac zlib/aclocal.m4
  80 zlib/configure: zlib/configure.ac zlib/aclocal.m4
  81 fastjar/aclocal.m4: fastjar/configure.ac
  82 fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.ac fastjar/aclocal.m4
  83 fastjar/configure: fastjar/configure.ac fastjar/aclocal.m4
  84 boehm-gc/aclocal.m4: boehm-gc/configure.in boehm-gc/acinclude.m4
  85 boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.in boehm-gc/aclocal.m4
  86 boehm-gc/configure: boehm-gc/configure.in boehm-gc/aclocal.m4
  87 libada/configure: libada/configure.ac
  88 libffi/aclocal.m4: libffi/configure.ac libffi/acinclude.m4
  89 libffi/Makefile.in: libffi/Makefile.am libffi/configure.ac libffi/aclocal.m4
  90 libffi/configure: libffi/configure.ac libffi/aclocal.m4
  91 libffi/fficonfig.h.in: libffi/configure.ac libffi/aclocal.m4
  92 libjava/aclocal.m4: libjava/configure.in libjava/acinclude.m4
  93 libjava/Makefile.in: libjava/Makefile.am libjava/configure.in libjava/aclocal.m4
  94 libjava/configure: libjava/configure.in libjava/aclocal.m4
  95 libjava/libltdl/aclocal.m4: libjava/libltdl/configure.ac libjava/libltdl/acinclude.m4
  96 libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
  97 libjava/libltdl/configure: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
  98 libjava/libltdl/config-h.in: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
  99 # Top level
 100 Makefile.in: Makefile.tpl Makefile.def
 101 configure: configure.in config/acx.m4
 102 EOF
 103 }
 104
 105
 106 # This function touches generated files such that the ``end'' user does
 107 # not have to rebuild them.
 108 touch_files () {
 109     rm -f Makefile.$$
 110     echo 'all: \' > Makefile.$$
 111     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 112     echo '; @true' >> Makefile.$$
 113     files_and_dependencies | sed 's, ,: ,' >> Makefile.$$
 114     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 115     echo ':' >> Makefile.$$
 116     echo '      @for f in $? $@; do test -f $$f || exit 0; done; \' >> Makefile.$$
 117     echo '      echo Touching $@...; \' >> Makefile.$$
 118     echo '      echo Touching $@... 1>&2; \' >> Makefile.$$
 119     echo '      touch $@' >> Makefile.$$
 120     files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$
 121     while ${MAKE-make} -s -f Makefile.$$ all | grep . > /dev/null; do
 122       sleep 1
 123     done 2>&1
 124     rm -f Makefile.$$
 125 }
 126
 127
 128 # Whenever we update the tree or install a patch, we may be modifying
 129 # this script.  By re-execing it, we ensure that the appropriate
 130 # dependencies and rules will be used.
 131 touch_files_reexec () {
 132     echo "Adjusting file timestamps"
 133     exec ${CONFIG_SHELL-/bin/sh} $self --touch
 134 }
 135
 136 # This functions applies a patch to an existing tree.
 137 apply_patch () {
 138     if [ -f $1 ]; then
 139         echo "Applying patch file $1"
 140         case "$1" in
 141         *gz)
 142             gzip -d -c $1 | patch -p1 ;;
 143         *bz2)
 144             bzip2 -d -c $1 | patch -p1 ;;
 145         *)
 146             cat $1 | patch -p1 ;;
 147         esac
 148     fi
 149     touch_files_reexec
 150 }
 151
 152 # Check whether this indeed looks like a local tree.
 153 if [ ! -f gcc/version.c ]; then
 154     echo "This does not seem to be a GCC tree!"
 155     exit
 156 fi
 157
 158 case "$1" in
 159 # First of all, check whether we are going to process a patch.
 160 --patch)
 161     if test "$#" != 2; then
 162         echo "$1" expects only one argument >&2
 163         exit 1
 164     fi
 165     apply_patch "${2}"
 166     exit $?
 167     ;;
 168
 169 --touch)
 170     if test "$#" != 1; then
 171         echo "$1" does not expect any argument >&2
 172         exit 1
 173     fi
 174     touch_files
 175     exit $?
 176     ;;
 177
 178 --list)
 179     if test "$#" != 1; then
 180         echo "$1" does not expect any argument >&2
 181         exit 1
 182     fi
 183     files_and_dependencies | sed 's/ /: /'
 184     exit $?
 185     ;;
 186
 187 --help)
 188     sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
 189 \
 190
 191 p
 192 }' \
 193         -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
 194     exit $?
 195     ;;
 196
 197 esac
 198
 199 # Check whether this indeed looks like a local CVS tree.
 200 if [ ! -d CVS ]; then
 201     echo "This does not seem to be a GCC CVS tree!"
 202     exit
 203 fi
 204
 205 # Check command-line options
 206 if [ x"${1}"x = x"--nostdflags"x ]; then
 207     shift
 208 else
 209     set -- $UPDATE_OPTIONS ${1+"$@"}
 210 fi
 211
 212 echo "Updating CVS tree"
 213 $GCC_CVS -q update ${1+"$@"}
 214 if [ $? -ne 0 ]; then
 215     (touch_files_reexec)
 216     echo "CVS update of full tree failed." >&2
 217     exit 1
 218 fi
 219
 220 {
 221   date
 222   TZ=UTC date
 223 } > LAST_UPDATED
 224 touch_files_reexec