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, $UPDATE_OPTIONS as well as this parameter itself
  10 # are omitted.
  11 #
  12 # If the first parameter reads --patch, the second parameter is considered
  13 # a patch file.
  14 #
  15 # If the first parameter is --touch, no cvs operation will be performed,
  16 # only generated files that appear to be out of date in the local tree
  17 # will be touched.
  18 #
  19 # If the first parameter is --list, a list of the generated files and
  20 # their dependencies will be printed; --help prints this message.
  21 #
  22 # If the first parameter is --silent, this script prints nothing other
  23 # than error messages; the second parameter is then interpreted as above.
  24 #
  25 # Examples:
  26 #
  27 # contrib/gcc_update -r gcc_latest_snapshot
  28 # contrib/gcc_update -A
  29 # contrib/gcc_update --nostdflags -P -r gcc-2_95-branch gcc/testsuite
  30 # contrib/gcc_update --patch some-patch
  31 # contrib/gcc_update --touch
  32 # contrib/gcc_update --list
  33 #
  34 #
  35 # (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation
  36 # Originally by Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>, August 1998.
  37 #
  38 # This script is Free Software, and it can be copied, distributed and
  39 # modified as defined in the GNU General Public License.  A copy of
  40 # its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
  41
  42
  43 # CVS command
  44 GCC_CVS=${GCC_CVS-${CVS-cvs}}
  45 # Default options used when updating via CVS.
  46 UPDATE_OPTIONS=-Pd
  47 # Use -P to prune empty directories.
  48 # Use -d to create any directories that exist in the repository but not
  49 #           locally.
  50 # Use -A to reset any sticky tags, dates, or `-k' options.
  51
  52 ######## Anything below shouldn't be changed by regular users.
  53
  54 # Arrange for the value of $0 to be available for functions
  55 self=$0
  56
  57 # This function prints its arguments to standard output unless
  58 # "silent" is set.
  59 unset silent
  60 chat () {
  61     if [ -z "$silent" ]; then
  62         echo "$@"
  63     fi
  64 }
  65
  66 # This function prints a list of all generated files, along with their
  67 # dependencies.  Note that only one target is supported per line: the
  68 # colon is stripped from the output.
  69 files_and_dependencies () {
  70     sed -e 's/ *#.*//' -e '/^$/d' -e 's/://' <<\EOF
  71 # fixincludes
  72 fixincludes/configure: fixincludes/configure.ac fixincludes/aclocal.m4
  73 fixincludes/config.h.in: fixincludes/configure.ac fixincludes/aclocal.m4
  74 # intl library
  75 intl/plural.c: intl/plural.y
  76 intl/configure: intl/configure.ac intl/aclocal.m4
  77 intl/config.h.in: intl/configure.ac intl/aclocal.m4
  78 # Now, proceed to gcc automatically generated files
  79 gcc/configure: gcc/configure.ac
  80 gcc/cstamp-h.in: gcc/configure.ac
  81 gcc/config.in: gcc/cstamp-h.in
  82 gcc/fixinc/fixincl.x: gcc/fixinc/fixincl.tpl gcc/fixinc/inclhack.def
  83 gcc/config/arm/arm-tune.md: gcc/config/arm/arm-cores.def gcc/config/arm/gentune.sh
  84 # And then, language-specific files
  85 gcc/cp/cfns.h: gcc/cp/cfns.gperf
  86 gcc/java/keyword.h: gcc/java/keyword.gperf
  87 # testsuite
  88 # Without this, _Pragma3.c can have a false negative.
  89 gcc/testsuite/gcc.dg/cpp/_Pragma3.c: gcc/testsuite/gcc.dg/cpp/mi1c.h
  90 # And libraries, at last
  91 libbanshee/configure: libbanshee/configure.ac
  92 libmudflap/configure: libmudflap/configure.ac
  93 libobjc/configure: libobjc/configure.ac
  94 zlib/aclocal.m4: zlib/configure.ac zlib/acinclude.m4
  95 zlib/Makefile.in: zlib/Makefile.am zlib/configure.ac zlib/aclocal.m4
  96 zlib/configure: zlib/configure.ac zlib/aclocal.m4
  97 fastjar/aclocal.m4: fastjar/configure.ac
  98 fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.ac fastjar/aclocal.m4
  99 fastjar/configure: fastjar/configure.ac fastjar/aclocal.m4
 100 boehm-gc/aclocal.m4: boehm-gc/configure.ac
 101 boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.ac boehm-gc/aclocal.m4
 102 boehm-gc/configure: boehm-gc/configure.ac boehm-gc/aclocal.m4
 103 libada/configure: libada/configure.ac
 104 libffi/aclocal.m4: libffi/configure.ac libffi/acinclude.m4
 105 libffi/Makefile.in: libffi/Makefile.am libffi/configure.ac libffi/aclocal.m4
 106 libffi/configure: libffi/configure.ac libffi/aclocal.m4
 107 libffi/fficonfig.h.in: libffi/configure.ac libffi/aclocal.m4
 108 libgfortran/aclocal.m4: libgfortran/configure.ac libgfortran/acinclude.m4
 109 libgfortran/Makefile.in: libgfortran/Makefile.am libgfortran/configure.ac libgfortran/aclocal.m4
 110 libgfortran/configure: libgfortran/configure.ac libgfortran/aclocal.m4
 111 libjava/aclocal.m4: libjava/configure.ac
 112 libjava/Makefile.in: libjava/Makefile.am libjava/configure.ac libjava/aclocal.m4
 113 libjava/configure: libjava/configure.ac libjava/aclocal.m4
 114 libjava/libltdl/aclocal.m4: libjava/libltdl/configure.ac libjava/libltdl/acinclude.m4
 115 libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 116 libjava/libltdl/configure: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 117 libjava/libltdl/config-h.in: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 118 libcpp/aclocal.m4: libcpp/configure.ac
 119 libcpp/Makefile.in: libcpp/configure.ac libcpp/aclocal.m4
 120 libcpp/configure: libcpp/configure.ac libcpp/aclocal.m4
 121 # Top level
 122 Makefile.in: Makefile.tpl Makefile.def
 123 configure: configure.in config/acx.m4
 124 EOF
 125 }
 126
 127
 128 # This function touches generated files such that the ``end'' user does
 129 # not have to rebuild them.
 130 touch_files () {
 131     rm -f Makefile.$$
 132     echo 'all: \' > Makefile.$$
 133     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 134     echo '; @true' >> Makefile.$$
 135     files_and_dependencies | sed 's, ,: ,' >> Makefile.$$
 136     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 137     echo ':' >> Makefile.$$
 138     echo '      @for f in $? $@; do test -f $$f || exit 0; done; \' >> Makefile.$$
 139     echo '      echo Touching $@...; \' >> Makefile.$$
 140     chat '      echo Touching $@... 1>&2; \' >> Makefile.$$
 141     echo '      touch $@' >> Makefile.$$
 142     files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$
 143
 144     # We would have to explicitly shut off the "Entering... Leaving..."
 145     # messages through "--no-print-directory" to handle the case when
 146     # we were called from a recursive invocation (i.e. "$(MAKE)" in a
 147     # Makefile, not just make).  Passing only "-s" doesn't help then,
 148     # because make has helpfully added "-w" to MAKEFLAGS automatically.
 149     # Unfortunately we do not require GNU make other than for building
 150     # and testing, so let's just grep known text explicitly echoed by
 151     # the rule.
 152     while ${MAKE-make} -s -f Makefile.$$ all | grep Touching > /dev/null; do
 153       sleep 1
 154     done 2>&1
 155     rm -f Makefile.$$
 156 }
 157
 158
 159 # Whenever we update the tree or install a patch, we may be modifying
 160 # this script.  By re-execing it, we ensure that the appropriate
 161 # dependencies and rules will be used.
 162 touch_files_reexec () {
 163     chat "Adjusting file timestamps"
 164     exec ${CONFIG_SHELL-/bin/sh} $self ${silent+"--silent"} --touch
 165 }
 166
 167 # This functions applies a patch to an existing tree.
 168 apply_patch () {
 169     if [ -f "$1" ]; then
 170         echo "Applying patch file $1"
 171         case $1 in
 172         *gz)
 173             gzip -d -c "$1" | patch -p1 ;;
 174         *bz2)
 175             bzip2 -d -c "$1" | patch -p1 ;;
 176         *)
 177             patch -p1 < "$1";;
 178         esac
 179     fi
 180     touch_files_reexec
 181 }
 182
 183 # Check whether this indeed looks like a local tree.
 184 if [ ! -f gcc/version.c ]; then
 185     echo "This does not seem to be a GCC tree!"
 186     exit
 187 fi
 188
 189 case "$1" in
 190 --silent)
 191     silent=t
 192     shift
 193     ;;
 194 esac
 195
 196 case "$1" in
 197 # First of all, check whether we are going to process a patch.
 198 --patch)
 199     if test "$#" != 2; then
 200         echo "$1" expects only one argument >&2
 201         exit 1
 202     fi
 203     apply_patch "${2}"
 204     exit $?
 205     ;;
 206
 207 --touch)
 208     if test "$#" != 1; then
 209         echo "$1" does not expect any argument >&2
 210         exit 1
 211     fi
 212     touch_files
 213     exit $?
 214     ;;
 215
 216 --list)
 217     if test "$#" != 1; then
 218         echo "$1" does not expect any argument >&2
 219         exit 1
 220     fi
 221     files_and_dependencies | sed 's/ /: /'
 222     exit $?
 223     ;;
 224
 225 --help)
 226     sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
 227 \
 228
 229 p
 230 }' \
 231         -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
 232     exit $?
 233     ;;
 234
 235 esac
 236
 237 # Check whether this indeed looks like a local CVS tree.
 238 if [ ! -d CVS ]; then
 239     echo "This does not seem to be a GCC CVS tree!"
 240     exit
 241 fi
 242
 243 # Check command-line options
 244 if [ x"${1}"x = x"--nostdflags"x ]; then
 245     shift
 246 else
 247     set -- $UPDATE_OPTIONS ${1+"$@"}
 248 fi
 249
 250 chat "Updating CVS tree"
 251
 252 $GCC_CVS -q ${silent+-Q} update ${1+"$@"}
 253 if [ $? -ne 0 ]; then
 254     (touch_files_reexec)
 255     echo "CVS update of full tree failed." >&2
 256     exit 1
 257 fi
 258
 259 {
 260   date
 261   TZ=UTC date
 262 } > LAST_UPDATED
 263 touch_files_reexec