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  16 # only generated files that appear to be out of date in the local tree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 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 # Default options used when updating via CVS.
  41 UPDATE_OPTIONS=-P
  42 # Add -d to create any directories that exist in the repository but not
  43 #        locally.
  44 # Add -A to reset any sticky tags, dates, or `-k' options.
  45
  46 # Arrange for the value of $0 to be available for functions
  47 self=$0
  48
  49 # This function prints a list of all generated files, along with their
  50 # dependencies.  Note that only one target is supported per line: the
  51 # colon is stripped from the output.
  52 files_and_dependencies () {
  53     sed -e 's/ *#.*//' -e '/^$/d' -e 's/://' <<\EOF
  54 # All automake dependencies within texinfo
  55 # In fact, not all, since we do not care about sub-directories that
  56 # we do not build.  In particular, *.po and *.gmo are not touched.
  57 texinfo/aclocal.m4: texinfo/configure.in texinfo/acinclude.m4
  58 texinfo/Makefile.in: texinfo/Makefile.am texinfo/configure.in texinfo/aclocal.m4
  59 texinfo/configure: texinfo/configure.in texinfo/aclocal.m4
  60 texinfo/stamp-h.in: texinfo/configure.in texinfo/aclocal.m4 texinfo/acconfig.h
  61 texinfo/lib/Makefile.in: texinfo/lib/Makefile.am texinfo/configure.in texinfo/aclocal.m4
  62 texinfo/makeinfo/Makefile.in: texinfo/makeinfo/Makefile.am texinfo/configure.in texinfo/aclocal.m4
  63 texinfo/util/Makefile.in: texinfo/util/Makefile.am texinfo/configure.in texinfo/aclocal.m4
  64 # Now, proceed to gcc automatically generated files
  65 gcc/configure: gcc/configure.in
  66 gcc/cstamp-h.in: gcc/configure.in gcc/acconfig.h
  67 gcc/config.in: gcc/cstamp-h.in
  68 gcc/fixinc/fixincl.x: gcc/fixinc/fixincl.tpl gcc/fixinc/inclhack.def
  69 gcc/gcov.1: gcc/gcov.texi
  70 gcc/cpp.1: gcc/cpp.texi
  71 gcc/gcc.1: gcc/invoke.texi
  72 # And then, language-specific files
  73 # (None at present.)
  74 # And libraries, at last
  75 libchill/configure: libchill/configure.in
  76 libf2c/configure: libf2c/configure.in
  77 libf2c/libF77/configure: libf2c/libF77/configure.in
  78 libf2c/libI77/configure: libf2c/libI77/configure.in
  79 libf2c/libU77/configure: libf2c/libU77/configure.in
  80 libf2c/libU77/stamp-h.in: libf2c/libU77/configure.in libf2c/libU77/acconfig.h
  81 libobjc/configure: libobjc/configure.in
  82 # fastjar
  83 fastjar/aclocal.m4: fastjar/configure.in
  84 fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.in fastjar/aclocal.m4
  85 fastjar/configure: fastjar/configure.in fastjar/aclocal.m4
  86 fastjar/stamp-h.in: fastjar/configure.in fastjar/aclocal.m4
  87 boehm-gc/aclocal.m4: boehm-gc/configure.in boehm-gc/acinclude.m4
  88 boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.in boehm-gc/aclocal.m4
  89 boehm-gc/configure: boehm-gc/configure.in boehm-gc/aclocal.m4
  90 libjava/aclocal.m4: libjava/configure.in libjava/acinclude.m4
  91 libjava/Makefile.in: libjava/Makefile.am libjava/configure.in libjava/aclocal.m4
  92 libjava/configure: libjava/configure.in libjava/aclocal.m4
  93 libjava/libltdl/aclocal.m4: libjava/libltdl/configure.in libjava/libltdl/acinclude.m4
  94 libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.in libjava/libltdl/aclocal.m4
  95 libjava/libltdl/configure: libjava/libltdl/configure.in libjava/libltdl/aclocal.m4
  96 libjava/libltdl/stamp-h.in: libjava/libltdl/configure.in libjava/libltdl/aclocal.m4 libjava/libltdl/acconfig.h
  97 EOF
  98 }
  99
 100
 101 # This function checks whether its first argument is newer than all
 102 # the other arguments.  It returns success (0) otherwise.
 103 is_out_of_date () {
 104   test `ls -1dt ${1+"$@"} | sed 1q` != "$1"
 105 }
 106
 107
 108 # This function touches generated files such that the ``end'' user does
 109 # not have to rebuild them.
 110 touch_files () {
 111     files_and_dependencies | while read f deps; do
 112         if test -f $f && is_out_of_date "$f" $deps; then
 113             echo Touching "$f"...
 114             touch $f
 115             if is_out_of_date "$f" $deps; then
 116                 # Hmm, it may have got the same timestamp as one of
 117                 # its touched dependencies.  Wait a second and retry.
 118                 sleep 1
 119                 echo Touching "$f" once more...
 120                 touch $f
 121             fi
 122         fi
 123     done
 124 }
 125
 126 # Whenever we update the tree or install a patch, we may be modifying
 127 # this script.  By re-execing it, we ensure that the appropriate
 128 # dependencies and rules will be used.
 129 touch_files_reexec () {
 130     echo "Adjusting file timestamps"
 131     exec ${CONFIG_SHELL-/bin/sh} $self --touch
 132 }
 133
 134 # This functions applies a patch to an existing tree.
 135 apply_patch () {
 136     if [ -f $1 ]; then
 137         echo "Applying patch file $1"
 138         case "$1" in
 139         *gz)
 140             gzip -d -c $1 | patch -p1 ;;
 141         *bz2)
 142             bzip2 -d -c $1 | patch -p1 ;;
 143         *)
 144             cat $1 | patch -p1 ;;
 145         esac
 146     fi
 147     touch_files_reexec
 148 }
 149
 150 # Check whether this indeed looks like a local tree.
 151 if [ ! -f gcc/version.c ]; then
 152     echo "This does not seem to be a GCC tree!"
 153     exit
 154 fi
 155
 156 case "$1" in
 157 # First of all, check whether we are going to process a patch.
 158 --patch)
 159     if test "$#" != 2; then
 160         echo "$1" expects only one argument >&2
 161         exit 1
 162     fi
 163     apply_patch "${2}"
 164     exit $?
 165     ;;
 166
 167 --touch)
 168     if test "$#" != 1; then
 169         echo "$1" does not expect any argument >&2
 170         exit 1
 171     fi
 172     touch_files
 173     exit $?
 174     ;;
 175
 176 --list)
 177     if test "$#" != 1; then
 178         echo "$1" does not expect any argument >&2
 179         exit 1
 180     fi
 181     files_and_dependencies | sed 's/ /: /'
 182     exit $?
 183     ;;
 184
 185 --help)
 186     sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
 187 \
 188
 189 p
 190 }' \
 191         -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
 192     exit $?
 193     ;;
 194
 195 esac
 196
 197 # Check whether this indeed looks like a local CVS tree.
 198 if [ ! -d CVS ]; then
 199     echo "This does not seem to be a GCC CVS tree!"
 200     exit
 201 fi
 202
 203 # Check command-line options
 204 if [ x"${1}"x = x"--nostdflags"x ]; then
 205     shift
 206 else
 207     set -- $UPDATE_OPTIONS ${1+"$@"}
 208 fi
 209
 210 echo "Updating CVS tree"
 211 cvs -q update ${1+"$@"}
 212 if [ $? -ne 0 ]; then
 213     (touch_files_reexec)
 214     echo "CVS update of full tree failed." >&2
 215     exit 1
 216 fi
 217
 218 touch_files_reexec