contrib/gcc_update

   1 #! /bin/sh
   2 #
   3 # Update a local Subversion, Git or Mercurial tree from the GCC
   4 # repository, with an emphasis on treating generated files correctly, so
   5 # that autoconf, gperf et al are not required for the ``end'' user.
   6 #
   7 # (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
   8 # 2011 Free Software Foundation
   9 # Originally by Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>, August 1998.
  10 #
  11 # This script is Free Software, and it can be copied, distributed and
  12 # modified as defined in the GNU General Public License.  A copy of
  13 # its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
  14 #
  15 #
  16 # By default all command-line options are passed to `svn update` or `hg/git
  17 # pull` in addition to $UPDATE_OPTIONS (defined below). If the first parameter
  18 # reads --nostdflags, $UPDATE_OPTIONS as well as this parameter itself
  19 # are omitted.
  20 #
  21 # If the first parameter reads --patch, the second parameter is considered
  22 # a patch file.
  23 #
  24 # If the first parameter is --touch, no svn operation will be performed,
  25 # only generated files that appear to be out of date in the local tree
  26 # will be touched.
  27 #
  28 # If the first parameter is --list, a list of the generated files and
  29 # their dependencies will be printed; --help prints this message.
  30 #
  31 # If the first parameter is --silent, this script prints nothing other
  32 # than error messages; the second parameter is then interpreted as above.
  33 #
  34 # Examples:
  35 #
  36 # contrib/gcc_update -r 8712
  37 # contrib/gcc_update --patch some-patch
  38 # contrib/gcc_update --touch
  39 # contrib/gcc_update --list
  40
  41
  42 # Default options used when updating (none).
  43 UPDATE_OPTIONS=""
  44
  45 # Set the locale to C to make this script work for users with foreign
  46 # locale like e.g. French UTF-8.
  47 LANG=C
  48 LC_ALL=C
  49 export LANG LC_ALL
  50
  51 ######## Anything below shouldn't be changed by regular users.
  52
  53 # Arrange for the value of $0 to be available for functions
  54 self=$0
  55
  56 # This function prints its arguments to standard output unless
  57 # "silent" is set.
  58 unset silent
  59 chat () {
  60     if [ -z "$silent" ]; then
  61         echo "$@"
  62     fi
  63 }
  64
  65 # This function prints a list of all generated files, along with their
  66 # dependencies.  Note that only one target is supported per line: the
  67 # colon is stripped from the output.
  68 files_and_dependencies () {
  69     sed -e 's/ *#.*//' -e '/^$/d' -e 's/://' <<\EOF
  70 # fixincludes
  71 fixincludes/configure: fixincludes/configure.ac fixincludes/aclocal.m4
  72 fixincludes/config.h.in: fixincludes/configure.ac fixincludes/aclocal.m4
  73 # intl library
  74 intl/plural.c: intl/plural.y
  75 intl/configure: intl/configure.ac intl/aclocal.m4
  76 intl/config.h.in: intl/configure.ac intl/aclocal.m4
  77 # Now, proceed to gcc automatically generated files
  78 gcc/configure: gcc/configure.ac
  79 gcc/cstamp-h.in: gcc/configure.ac
  80 gcc/config.in: gcc/cstamp-h.in
  81 gcc/fixinc/fixincl.x: gcc/fixinc/fixincl.tpl gcc/fixinc/inclhack.def
  82 gcc/config/arm/arm-tune.md: gcc/config/arm/arm-cores.def gcc/config/arm/gentune.sh
  83 gcc/config/arm/arm-tables.opt: gcc/config/arm/arm-arches.def gcc/config/arm/arm-cores.def gcc/config/arm/genopt.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 # Similarly, without this, you will see:
  91 # direct2s.c:35: warning: current file is older than direct2.c
  92 gcc/testsuite/gcc.dg/cpp/direct2s.c: gcc/testsuite/gcc.dg/cpp/direct2.c
  93 # lto-plugin
  94 lto-plugin/configure: lto-plugin/configure.ac lto-plugin/aclocal.m4
  95 lto-plugin/Makefile.in: lto-plugin/Makefile.am lto-plugin/aclocal.m4
  96 # And libraries, at last
  97 libbanshee/configure: libbanshee/configure.ac
  98 libmudflap/configure: libmudflap/configure.ac
  99 libobjc/configure: libobjc/configure.ac
 100 zlib/aclocal.m4: zlib/configure.ac zlib/acinclude.m4
 101 zlib/Makefile.in: zlib/Makefile.am zlib/configure.ac zlib/aclocal.m4
 102 zlib/configure: zlib/configure.ac zlib/aclocal.m4
 103 fastjar/aclocal.m4: fastjar/configure.ac
 104 fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.ac fastjar/aclocal.m4
 105 fastjar/configure: fastjar/configure.ac fastjar/aclocal.m4
 106 boehm-gc/aclocal.m4: boehm-gc/configure.ac
 107 boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.ac boehm-gc/aclocal.m4
 108 boehm-gc/configure: boehm-gc/configure.ac boehm-gc/aclocal.m4
 109 libada/configure: libada/configure.ac
 110 libffi/aclocal.m4: libffi/configure.ac libffi/acinclude.m4
 111 libffi/Makefile.in: libffi/Makefile.am libffi/configure.ac libffi/aclocal.m4
 112 libffi/configure: libffi/configure.ac libffi/aclocal.m4
 113 libffi/fficonfig.h.in: libffi/configure.ac libffi/aclocal.m4
 114 libgfortran/aclocal.m4: libgfortran/configure.ac libgfortran/acinclude.m4
 115 libgfortran/Makefile.in: libgfortran/Makefile.am libgfortran/configure.ac libgfortran/aclocal.m4
 116 libgfortran/configure: libgfortran/configure.ac libgfortran/aclocal.m4
 117 libjava/aclocal.m4: libjava/configure.ac
 118 libjava/Makefile.in: libjava/Makefile.am libjava/configure.ac libjava/aclocal.m4
 119 libjava/configure: libjava/configure.ac libjava/aclocal.m4
 120 libjava/libltdl/aclocal.m4: libjava/libltdl/configure.ac libjava/libltdl/acinclude.m4
 121 libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 122 libjava/libltdl/configure: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 123 libjava/libltdl/config-h.in: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 124 libcpp/aclocal.m4: libcpp/configure.ac
 125 libcpp/Makefile.in: libcpp/configure.ac libcpp/aclocal.m4
 126 libcpp/configure: libcpp/configure.ac libcpp/aclocal.m4
 127 libgomp/aclocal.m4: libgomp/configure.ac libgomp/acinclude.m4
 128 libgomp/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4
 129 libgomp/testsuite/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4
 130 libgomp/configure: libgomp/configure.ac libgomp/aclocal.m4
 131 libgomp/config.h.in: libgomp/configure.ac libgomp/aclocal.m4
 132 # Top level
 133 Makefile.in: Makefile.tpl Makefile.def
 134 configure: configure.ac config/acx.m4
 135 EOF
 136 }
 137
 138
 139 # This function touches generated files such that the ``end'' user does
 140 # not have to rebuild them.
 141 touch_files () {
 142     rm -f Makefile.$$
 143     echo 'all: \' > Makefile.$$
 144     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 145     echo '; @true' >> Makefile.$$
 146     files_and_dependencies | sed 's, ,: ,' >> Makefile.$$
 147     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 148     echo ':' >> Makefile.$$
 149     echo '      @for f in $? $@; do test -f $$f || exit 0; done; \' >> Makefile.$$
 150     echo '      echo Touching $@...; \' >> Makefile.$$
 151     chat '      echo Touching $@... 1>&2; \' >> Makefile.$$
 152     echo '      touch $@' >> Makefile.$$
 153     files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$
 154
 155     # We would have to explicitly shut off the "Entering... Leaving..."
 156     # messages through "--no-print-directory" to handle the case when
 157     # we were called from a recursive invocation (i.e. "$(MAKE)" in a
 158     # Makefile, not just make).  Passing only "-s" doesn't help then,
 159     # because make has helpfully added "-w" to MAKEFLAGS automatically.
 160     # Unfortunately we do not require GNU make other than for building
 161     # and testing, so let's just grep known text explicitly echoed by
 162     # the rule.
 163     while ${MAKE-make} -s -f Makefile.$$ all | grep Touching > /dev/null; do
 164       sleep 1
 165     done 2>&1
 166     rm -f Makefile.$$
 167 }
 168
 169
 170 # Whenever we update the tree or install a patch, we may be modifying
 171 # this script.  By re-execing it, we ensure that the appropriate
 172 # dependencies and rules will be used.
 173 touch_files_reexec () {
 174     chat "Adjusting file timestamps"
 175     exec ${CONFIG_SHELL-/bin/sh} $self ${silent+"--silent"} --touch
 176 }
 177
 178 # This functions applies a patch to an existing tree.
 179 apply_patch () {
 180     if [ -f "$1" ]; then
 181         echo "Applying patch file $1"
 182         case $1 in
 183         *gz)
 184             gzip -d -c "$1" | patch -p1 ;;
 185         *bz2)
 186             bzip2 -d -c "$1" | patch -p1 ;;
 187         *)
 188             patch -p1 < "$1";;
 189         esac
 190     fi
 191     touch_files_reexec
 192 }
 193
 194 # Check whether this indeed looks like a local tree.
 195 if [ ! -f gcc/version.c ]; then
 196     echo "This does not seem to be a GCC tree!"
 197     exit
 198 fi
 199
 200 case "$1" in
 201 --silent)
 202     silent=t
 203     shift
 204     ;;
 205 esac
 206
 207 case "$1" in
 208 # First of all, check whether we are going to process a patch.
 209 --patch)
 210     if test "$#" != 2; then
 211         echo "$1" expects only one argument >&2
 212         exit 1
 213     fi
 214     apply_patch "${2}"
 215     exit $?
 216     ;;
 217
 218 --touch)
 219     if test "$#" != 1; then
 220         echo "$1" does not expect any argument >&2
 221         exit 1
 222     fi
 223     touch_files
 224     exit $?
 225     ;;
 226
 227 --list)
 228     if test "$#" != 1; then
 229         echo "$1" does not expect any argument >&2
 230         exit 1
 231     fi
 232     files_and_dependencies | sed 's/ /: /'
 233     exit $?
 234     ;;
 235
 236 --help)
 237     sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
 238 \
 239
 240 p
 241 }' \
 242         -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
 243     exit $?
 244     ;;
 245
 246 esac
 247
 248 # Check for known version control systems.
 249 if [ -d .git ]; then
 250     GCC_GIT=${GCC_GIT-${GIT-git}}
 251     vcs_type="git"
 252 elif [ -d .hg ]; then
 253     GCC_HG=${GCC_HG-${HG-hg}}
 254     vcs_type="hg"
 255 elif [ -d .svn ]; then
 256     GCC_SVN=${GCC_SVN-${SVN-svn}}
 257     vcs_type="svn"
 258 else
 259     echo "This does not seem to be a GCC GIT/HG/SVN tree!"
 260     exit
 261 fi
 262
 263 # Check command-line options
 264 if [ x"${1}"x = x"--nostdflags"x ]; then
 265     shift
 266 else
 267     set -- $UPDATE_OPTIONS ${1+"$@"}
 268 fi
 269
 270 case $vcs_type in
 271     git)
 272         chat "Updating GIT tree"
 273
 274         $GCC_GIT diff --quiet --exit-code HEAD
 275         if [ $? -ne 0 ]; then
 276             echo "Attempting to update a dirty git tree!" >&2
 277             echo "Commit or stash your changes first and retry." >&2
 278             exit 1
 279         fi
 280
 281         $GCC_GIT pull ${silent+-q} --rebase ${1+"$@"}
 282         if [ $? -ne 0 ]; then
 283             (touch_files_reexec)
 284             echo "git pull of full tree failed." >&2
 285             exit 1
 286         fi
 287
 288         revision=`$GCC_GIT log -n1 --pretty=%p:%t:%H`
 289         branch=`$GCC_GIT name-rev --name-only HEAD || :`
 290         ;;
 291
 292     hg)
 293         chat "Updating HG tree"
 294
 295         # Add -q so untracked files aren't listed.
 296         if [ `$GCC_HG status -q | wc -l` -gt 0 ]; then
 297             echo "Attempting to update a dirty hg tree!" >&2
 298             echo "Commit or revert your changes first and retry." >&2
 299             exit 1
 300         fi
 301
 302         # Check for mq extension.  mq patches must be popped so tip has
 303         # been converted from the SVN tree.
 304         if [ -d .hg/patches ] && [ `$GCC_HG qapplied | wc -l` -gt 0 ]; then
 305             # FIXME: Perhaps pop queue instead?  We could do that since we
 306             # know the tree is clean.
 307             echo "Attempting to update hg tree with mq patches applied!" >&2
 308             echo "Pop your patches first and retry." >&2
 309             exit 1
 310         fi
 311
 312         # Update tree, but make sure to only pull the default branch.
 313         # Otherwise all branches in the upstream repo are added, even if
 314         # only a single one has been cloned.
 315         $GCC_HG pull ${silent+-q} -r`$GCC_HG branch` ${1+"$@"}
 316         if [ $? -ne 0 ]; then
 317             (touch_files_reexec)
 318             echo "hg pull of full tree failed." >&2
 319             exit 1
 320         fi
 321
 322         # Update tree.  Needs to be done separately from pull so
 323         # gcc_update -rREV works.
 324         $GCC_HG update ${silent+-q} ${1+"$@"}
 325         if [ $? -ne 0 ]; then
 326             (touch_files_reexec)
 327             echo "hg update of full tree failed." >&2
 328             exit 1
 329         fi
 330
 331         # Extract SVN revision corresponding to parents, as stored by
 332         # hg convert.  Before hg 1.4.3, there's no template keyword
 333         # corresponding to the extra: tag, so need to use hg log --debug
 334         # to extract the info.
 335         parents=`$GCC_HG parents --template '{rev}'`
 336         revision=`$GCC_HG log --debug -r$parents | \
 337             sed -ne "/^extra:.*convert_revision=svn:/ {
 338                 s%^.*@%%
 339                 p
 340             }"`
 341         branch=`$GCC_HG branch`
 342         # trunk in SVN parlance shows up as default branch in hg.
 343         [ x$branch = x"default" ] && branch="trunk"
 344         ;;
 345
 346     svn)
 347         chat "Updating SVN tree"
 348
 349         $GCC_SVN ${silent+-q}  --non-interactive update ${1+"$@"}
 350         if [ $? -ne 0 ]; then
 351             (touch_files_reexec)
 352             echo "SVN update of full tree failed." >&2
 353             exit 1
 354         fi
 355
 356         revision=`svn info | awk '/Revision:/ { print $2 }'`
 357         branch=`svn info | sed -ne "/URL:/ {
 358             s,.*/trunk,trunk,
 359             s,.*/branches/,,
 360             s,.*/tags/,,
 361             p
 362         }"`
 363         ;;
 364 esac
 365
 366 rm -f LAST_UPDATED gcc/REVISION
 367 {
 368     date
 369     echo "`TZ=UTC date` (revision $revision)"
 370 } > LAST_UPDATED
 371 echo "[$branch revision $revision]" > gcc/REVISION
 372
 373 touch_files_reexec