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 # 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  25 # only generated files that appear to be out of date in the local tree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 # And then, language-specific files
  84 gcc/cp/cfns.h: gcc/cp/cfns.gperf
  85 gcc/java/keyword.h: gcc/java/keyword.gperf
  86 # testsuite
  87 # Without this, _Pragma3.c can have a false negative.
  88 gcc/testsuite/gcc.dg/cpp/_Pragma3.c: gcc/testsuite/gcc.dg/cpp/mi1c.h
  89 # Similarly, without this, you will see:
  90 # direct2s.c:35: warning: current file is older than direct2.c
  91 gcc/testsuite/gcc.dg/cpp/direct2s.c: gcc/testsuite/gcc.dg/cpp/direct2.c
  92 # lto-plugin
  93 lto-plugin/configure: lto-plugin/configure.ac lto-plugin/aclocal.m4
  94 lto-plugin/Makefile.in: lto-plugin/Makefile.am lto-plugin/aclocal.m4
  95 # And libraries, at last
  96 libbanshee/configure: libbanshee/configure.ac
  97 libmudflap/configure: libmudflap/configure.ac
  98 libobjc/configure: libobjc/configure.ac
  99 zlib/aclocal.m4: zlib/configure.ac zlib/acinclude.m4
 100 zlib/Makefile.in: zlib/Makefile.am zlib/configure.ac zlib/aclocal.m4
 101 zlib/configure: zlib/configure.ac zlib/aclocal.m4
 102 fastjar/aclocal.m4: fastjar/configure.ac
 103 fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.ac fastjar/aclocal.m4
 104 fastjar/configure: fastjar/configure.ac fastjar/aclocal.m4
 105 boehm-gc/aclocal.m4: boehm-gc/configure.ac
 106 boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.ac boehm-gc/aclocal.m4
 107 boehm-gc/configure: boehm-gc/configure.ac boehm-gc/aclocal.m4
 108 libada/configure: libada/configure.ac
 109 libffi/aclocal.m4: libffi/configure.ac libffi/acinclude.m4
 110 libffi/Makefile.in: libffi/Makefile.am libffi/configure.ac libffi/aclocal.m4
 111 libffi/configure: libffi/configure.ac libffi/aclocal.m4
 112 libffi/fficonfig.h.in: libffi/configure.ac libffi/aclocal.m4
 113 libgfortran/aclocal.m4: libgfortran/configure.ac libgfortran/acinclude.m4
 114 libgfortran/Makefile.in: libgfortran/Makefile.am libgfortran/configure.ac libgfortran/aclocal.m4
 115 libgfortran/configure: libgfortran/configure.ac libgfortran/aclocal.m4
 116 libjava/aclocal.m4: libjava/configure.ac
 117 libjava/Makefile.in: libjava/Makefile.am libjava/configure.ac libjava/aclocal.m4
 118 libjava/configure: libjava/configure.ac libjava/aclocal.m4
 119 libjava/libltdl/aclocal.m4: libjava/libltdl/configure.ac libjava/libltdl/acinclude.m4
 120 libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 121 libjava/libltdl/configure: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 122 libjava/libltdl/config-h.in: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 123 libcpp/aclocal.m4: libcpp/configure.ac
 124 libcpp/Makefile.in: libcpp/configure.ac libcpp/aclocal.m4
 125 libcpp/configure: libcpp/configure.ac libcpp/aclocal.m4
 126 libgomp/aclocal.m4: libgomp/configure.ac libgomp/acinclude.m4
 127 libgomp/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4
 128 libgomp/testsuite/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4
 129 libgomp/configure: libgomp/configure.ac libgomp/aclocal.m4
 130 libgomp/config.h.in: libgomp/configure.ac libgomp/aclocal.m4
 131 # Top level
 132 Makefile.in: Makefile.tpl Makefile.def
 133 configure: configure.ac config/acx.m4
 134 EOF
 135 }
 136
 137
 138 # This function touches generated files such that the ``end'' user does
 139 # not have to rebuild them.
 140 touch_files () {
 141     rm -f Makefile.$$
 142     echo 'all: \' > Makefile.$$
 143     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 144     echo '; @true' >> Makefile.$$
 145     files_and_dependencies | sed 's, ,: ,' >> Makefile.$$
 146     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 147     echo ':' >> Makefile.$$
 148     echo '      @for f in $? $@; do test -f $$f || exit 0; done; \' >> Makefile.$$
 149     echo '      echo Touching $@...; \' >> Makefile.$$
 150     chat '      echo Touching $@... 1>&2; \' >> Makefile.$$
 151     echo '      touch $@' >> Makefile.$$
 152     files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$
 153
 154     # We would have to explicitly shut off the "Entering... Leaving..."
 155     # messages through "--no-print-directory" to handle the case when
 156     # we were called from a recursive invocation (i.e. "$(MAKE)" in a
 157     # Makefile, not just make).  Passing only "-s" doesn't help then,
 158     # because make has helpfully added "-w" to MAKEFLAGS automatically.
 159     # Unfortunately we do not require GNU make other than for building
 160     # and testing, so let's just grep known text explicitly echoed by
 161     # the rule.
 162     while ${MAKE-make} -s -f Makefile.$$ all | grep Touching > /dev/null; do
 163       sleep 1
 164     done 2>&1
 165     rm -f Makefile.$$
 166 }
 167
 168
 169 # Whenever we update the tree or install a patch, we may be modifying
 170 # this script.  By re-execing it, we ensure that the appropriate
 171 # dependencies and rules will be used.
 172 touch_files_reexec () {
 173     chat "Adjusting file timestamps"
 174     exec ${CONFIG_SHELL-/bin/sh} $self ${silent+"--silent"} --touch
 175 }
 176
 177 # This functions applies a patch to an existing tree.
 178 apply_patch () {
 179     if [ -f "$1" ]; then
 180         echo "Applying patch file $1"
 181         case $1 in
 182         *gz)
 183             gzip -d -c "$1" | patch -p1 ;;
 184         *bz2)
 185             bzip2 -d -c "$1" | patch -p1 ;;
 186         *)
 187             patch -p1 < "$1";;
 188         esac
 189     fi
 190     touch_files_reexec
 191 }
 192
 193 # Check whether this indeed looks like a local tree.
 194 if [ ! -f gcc/version.c ]; then
 195     echo "This does not seem to be a GCC tree!"
 196     exit
 197 fi
 198
 199 case "$1" in
 200 --silent)
 201     silent=t
 202     shift
 203     ;;
 204 esac
 205
 206 case "$1" in
 207 # First of all, check whether we are going to process a patch.
 208 --patch)
 209     if test "$#" != 2; then
 210         echo "$1" expects only one argument >&2
 211         exit 1
 212     fi
 213     apply_patch "${2}"
 214     exit $?
 215     ;;
 216
 217 --touch)
 218     if test "$#" != 1; then
 219         echo "$1" does not expect any argument >&2
 220         exit 1
 221     fi
 222     touch_files
 223     exit $?
 224     ;;
 225
 226 --list)
 227     if test "$#" != 1; then
 228         echo "$1" does not expect any argument >&2
 229         exit 1
 230     fi
 231     files_and_dependencies | sed 's/ /: /'
 232     exit $?
 233     ;;
 234
 235 --help)
 236     sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
 237 \
 238
 239 p
 240 }' \
 241         -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
 242     exit $?
 243     ;;
 244
 245 esac
 246
 247 # Check for known version control systems.
 248 if [ -d .git ]; then
 249     GCC_GIT=${GCC_GIT-${GIT-git}}
 250     vcs_type="git"
 251 elif [ -d .hg ]; then
 252     GCC_HG=${GCC_HG-${HG-hg}}
 253     vcs_type="hg"
 254 elif [ -d .svn ]; then
 255     GCC_SVN=${GCC_SVN-${SVN-svn}}
 256     vcs_type="svn"
 257 else
 258     echo "This does not seem to be a GCC GIT/HG/SVN tree!"
 259     exit
 260 fi
 261
 262 # Check command-line options
 263 if [ x"${1}"x = x"--nostdflags"x ]; then
 264     shift
 265 else
 266     set -- $UPDATE_OPTIONS ${1+"$@"}
 267 fi
 268
 269 case $vcs_type in
 270     git)
 271         chat "Updating GIT tree"
 272
 273         $GCC_GIT diff --quiet --exit-code HEAD
 274         if [ $? -ne 0 ]; then
 275             echo "Attempting to update a dirty git tree!" >&2
 276             echo "Commit or stash your changes first and retry." >&2
 277             exit 1
 278         fi
 279
 280         $GCC_GIT pull ${silent+-q} --rebase ${1+"$@"}
 281         if [ $? -ne 0 ]; then
 282             (touch_files_reexec)
 283             echo "git pull of full tree failed." >&2
 284             exit 1
 285         fi
 286
 287         revision=`$GCC_GIT log -n1 --pretty=%p:%t:%H`
 288         branch=`$GCC_GIT name-rev --name-only HEAD || :`
 289         ;;
 290
 291     hg)
 292         chat "Updating HG tree"
 293
 294         # Add -q so untracked files aren't listed.
 295         if [ `$GCC_HG status -q | wc -l` -gt 0 ]; then
 296             echo "Attempting to update a dirty hg tree!" >&2
 297             echo "Commit or revert your changes first and retry." >&2
 298             exit 1
 299         fi
 300
 301         # Check for mq extension.  mq patches must be popped so tip has
 302         # been converted from the SVN tree.
 303         if [ -d .hg/patches ] && [ `$GCC_HG qapplied | wc -l` -gt 0 ]; then
 304             # FIXME: Perhaps pop queue instead?  We could do that since we
 305             # know the tree is clean.
 306             echo "Attempting to update hg tree with mq patches applied!" >&2
 307             echo "Pop your patches first and retry." >&2
 308             exit 1
 309         fi
 310
 311         # Update tree, but make sure to only pull the default branch.
 312         # Otherwise all branches in the upstream repo are added, even if
 313         # only a single one has been cloned.
 314         $GCC_HG pull ${silent+-q} -r`$GCC_HG branch` ${1+"$@"}
 315         if [ $? -ne 0 ]; then
 316             (touch_files_reexec)
 317             echo "hg pull of full tree failed." >&2
 318             exit 1
 319         fi
 320
 321         # Update tree.  Needs to be done separately from pull so
 322         # gcc_update -rREV works.
 323         $GCC_HG update ${silent+-q} ${1+"$@"}
 324         if [ $? -ne 0 ]; then
 325             (touch_files_reexec)
 326             echo "hg update of full tree failed." >&2
 327             exit 1
 328         fi
 329
 330         # Extract SVN revision corresponding to parents, as stored by
 331         # hg convert.  Before hg 1.4.3, there's no template keyword
 332         # corresponding to the extra: tag, so need to use hg log --debug
 333         # to extract the info.
 334         parents=`$GCC_HG parents --template '{rev}'`
 335         revision=`$GCC_HG log --debug -r$parents | \
 336             sed -ne "/^extra:.*convert_revision=svn:/ {
 337                 s%^.*@%%
 338                 p
 339             }"`
 340         branch=`$GCC_HG branch`
 341         # trunk in SVN parlance shows up as default branch in hg.
 342         [ x$branch = x"default" ] && branch="trunk"
 343         ;;
 344
 345     svn)
 346         chat "Updating SVN tree"
 347
 348         $GCC_SVN ${silent+-q}  --non-interactive update ${1+"$@"}
 349         if [ $? -ne 0 ]; then
 350             (touch_files_reexec)
 351             echo "SVN update of full tree failed." >&2
 352             exit 1
 353         fi
 354
 355         revision=`svn info | awk '/Revision:/ { print $2 }'`
 356         branch=`svn info | sed -ne "/URL:/ {
 357             s,.*/trunk,trunk,
 358             s,.*/branches/,,
 359             s,.*/tags/,,
 360             p
 361         }"`
 362         ;;
 363 esac
 364
 365 rm -f LAST_UPDATED gcc/REVISION
 366 {
 367     date
 368     echo "`TZ=UTC date` (revision $revision)"
 369 } > LAST_UPDATED
 370 echo "[$branch revision $revision]" > gcc/REVISION
 371
 372 touch_files_reexec