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  25 # only generated files that appear to be out of date in the local tree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/arm-fpus.def gcc/config/arm/genopt.sh
  84 gcc/config/m68k/m68k-tables.opt: gcc/config/m68k/m68k-devices.def gcc/config/m68k/m68k-isas.def gcc/config/m68k/m68k-microarchs.def gcc/config/m68k/genopt.sh
  85 gcc/config/mips/mips-tables.opt: gcc/config/mips/mips-cpus.def gcc/config/mips/genopt.sh
  86 gcc/config/rs6000/rs6000-tables.opt: gcc/config/rs6000/rs6000-cpus.def gcc/config/rs6000/genopt.sh
  87 # And then, language-specific files
  88 gcc/cp/cfns.h: gcc/cp/cfns.gperf
  89 gcc/java/keyword.h: gcc/java/keyword.gperf
  90 # testsuite
  91 # Without this, _Pragma3.c can have a false negative.
  92 gcc/testsuite/gcc.dg/cpp/_Pragma3.c: gcc/testsuite/gcc.dg/cpp/mi1c.h
  93 # Similarly, without this, you will see:
  94 # direct2s.c:35: warning: current file is older than direct2.c
  95 gcc/testsuite/gcc.dg/cpp/direct2s.c: gcc/testsuite/gcc.dg/cpp/direct2.c
  96 # lto-plugin
  97 lto-plugin/configure: lto-plugin/configure.ac lto-plugin/aclocal.m4
  98 lto-plugin/Makefile.in: lto-plugin/Makefile.am lto-plugin/aclocal.m4
  99 # And libraries, at last
 100 libbanshee/configure: libbanshee/configure.ac
 101 libmudflap/configure: libmudflap/configure.ac
 102 libobjc/configure: libobjc/configure.ac
 103 zlib/aclocal.m4: zlib/configure.ac zlib/acinclude.m4
 104 zlib/Makefile.in: zlib/Makefile.am zlib/configure.ac zlib/aclocal.m4
 105 zlib/configure: zlib/configure.ac zlib/aclocal.m4
 106 fastjar/aclocal.m4: fastjar/configure.ac
 107 fastjar/Makefile.in: fastjar/Makefile.am fastjar/configure.ac fastjar/aclocal.m4
 108 fastjar/configure: fastjar/configure.ac fastjar/aclocal.m4
 109 boehm-gc/aclocal.m4: boehm-gc/configure.ac
 110 boehm-gc/Makefile.in: boehm-gc/Makefile.am boehm-gc/configure.ac boehm-gc/aclocal.m4
 111 boehm-gc/configure: boehm-gc/configure.ac boehm-gc/aclocal.m4
 112 libada/configure: libada/configure.ac
 113 libffi/aclocal.m4: libffi/configure.ac libffi/acinclude.m4
 114 libffi/Makefile.in: libffi/Makefile.am libffi/configure.ac libffi/aclocal.m4
 115 libffi/configure: libffi/configure.ac libffi/aclocal.m4
 116 libffi/fficonfig.h.in: libffi/configure.ac libffi/aclocal.m4
 117 libgfortran/aclocal.m4: libgfortran/configure.ac libgfortran/acinclude.m4
 118 libgfortran/Makefile.in: libgfortran/Makefile.am libgfortran/configure.ac libgfortran/aclocal.m4
 119 libgfortran/configure: libgfortran/configure.ac libgfortran/aclocal.m4
 120 libjava/aclocal.m4: libjava/configure.ac
 121 libjava/Makefile.in: libjava/Makefile.am libjava/configure.ac libjava/aclocal.m4
 122 libjava/configure: libjava/configure.ac libjava/aclocal.m4
 123 libjava/libltdl/aclocal.m4: libjava/libltdl/configure.ac libjava/libltdl/acinclude.m4
 124 libjava/libltdl/Makefile.in: libjava/libltdl/Makefile.am libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 125 libjava/libltdl/configure: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 126 libjava/libltdl/config-h.in: libjava/libltdl/configure.ac libjava/libltdl/aclocal.m4
 127 libcpp/aclocal.m4: libcpp/configure.ac
 128 libcpp/Makefile.in: libcpp/configure.ac libcpp/aclocal.m4
 129 libcpp/configure: libcpp/configure.ac libcpp/aclocal.m4
 130 libgomp/aclocal.m4: libgomp/configure.ac libgomp/acinclude.m4
 131 libgomp/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4
 132 libgomp/testsuite/Makefile.in: libgomp/Makefile.am libgomp/aclocal.m4
 133 libgomp/configure: libgomp/configure.ac libgomp/aclocal.m4
 134 libgomp/config.h.in: libgomp/configure.ac libgomp/aclocal.m4
 135 # Top level
 136 Makefile.in: Makefile.tpl Makefile.def
 137 configure: configure.ac config/acx.m4
 138 EOF
 139 }
 140
 141
 142 # This function touches generated files such that the ``end'' user does
 143 # not have to rebuild them.
 144 touch_files () {
 145     rm -f Makefile.$$
 146     echo 'all: \' > Makefile.$$
 147     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 148     echo '; @true' >> Makefile.$$
 149     files_and_dependencies | sed 's, ,: ,' >> Makefile.$$
 150     files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
 151     echo ':' >> Makefile.$$
 152     echo '      @for f in $? $@; do test -f $$f || exit 0; done; \' >> Makefile.$$
 153     echo '      echo Touching $@...; \' >> Makefile.$$
 154     chat '      echo Touching $@... 1>&2; \' >> Makefile.$$
 155     echo '      touch $@' >> Makefile.$$
 156     files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$
 157
 158     # We would have to explicitly shut off the "Entering... Leaving..."
 159     # messages through "--no-print-directory" to handle the case when
 160     # we were called from a recursive invocation (i.e. "$(MAKE)" in a
 161     # Makefile, not just make).  Passing only "-s" doesn't help then,
 162     # because make has helpfully added "-w" to MAKEFLAGS automatically.
 163     # Unfortunately we do not require GNU make other than for building
 164     # and testing, so let's just grep known text explicitly echoed by
 165     # the rule.
 166     while ${MAKE-make} -s -f Makefile.$$ all | grep Touching > /dev/null; do
 167       sleep 1
 168     done 2>&1
 169     rm -f Makefile.$$
 170 }
 171
 172
 173 # Whenever we update the tree or install a patch, we may be modifying
 174 # this script.  By re-execing it, we ensure that the appropriate
 175 # dependencies and rules will be used.
 176 touch_files_reexec () {
 177     chat "Adjusting file timestamps"
 178     exec ${CONFIG_SHELL-/bin/sh} $self ${silent+"--silent"} --touch
 179 }
 180
 181 # This functions applies a patch to an existing tree.
 182 apply_patch () {
 183     if [ -f "$1" ]; then
 184         echo "Applying patch file $1"
 185         case $1 in
 186         *gz)
 187             gzip -d -c "$1" | patch -p1 ;;
 188         *bz2)
 189             bzip2 -d -c "$1" | patch -p1 ;;
 190         *)
 191             patch -p1 < "$1";;
 192         esac
 193     fi
 194     touch_files_reexec
 195 }
 196
 197 # Check whether this indeed looks like a local tree.
 198 if [ ! -f gcc/version.c ]; then
 199     echo "This does not seem to be a GCC tree!"
 200     exit
 201 fi
 202
 203 case "$1" in
 204 --silent)
 205     silent=t
 206     shift
 207     ;;
 208 esac
 209
 210 case "$1" in
 211 # First of all, check whether we are going to process a patch.
 212 --patch)
 213     if test "$#" != 2; then
 214         echo "$1" expects only one argument >&2
 215         exit 1
 216     fi
 217     apply_patch "${2}"
 218     exit $?
 219     ;;
 220
 221 --touch)
 222     if test "$#" != 1; then
 223         echo "$1" does not expect any argument >&2
 224         exit 1
 225     fi
 226     touch_files
 227     exit $?
 228     ;;
 229
 230 --list)
 231     if test "$#" != 1; then
 232         echo "$1" does not expect any argument >&2
 233         exit 1
 234     fi
 235     files_and_dependencies | sed 's/ /: /'
 236     exit $?
 237     ;;
 238
 239 --help)
 240     sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
 241 \
 242
 243 p
 244 }' \
 245         -e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
 246     exit $?
 247     ;;
 248
 249 esac
 250
 251 # Check for known version control systems.
 252 if [ -d .git ]; then
 253     GCC_GIT=${GCC_GIT-${GIT-git}}
 254     vcs_type="git"
 255 elif [ -d .hg ]; then
 256     GCC_HG=${GCC_HG-${HG-hg}}
 257     vcs_type="hg"
 258 elif [ -d .svn ]; then
 259     GCC_SVN=${GCC_SVN-${SVN-svn}}
 260     vcs_type="svn"
 261 else
 262     echo "This does not seem to be a GCC GIT/HG/SVN tree!"
 263     exit
 264 fi
 265
 266 # Check command-line options
 267 if [ x"${1}"x = x"--nostdflags"x ]; then
 268     shift
 269 else
 270     set -- $UPDATE_OPTIONS ${1+"$@"}
 271 fi
 272
 273 case $vcs_type in
 274     git)
 275         chat "Updating GIT tree"
 276
 277         $GCC_GIT diff --quiet --exit-code HEAD
 278         if [ $? -ne 0 ]; then
 279             echo "Attempting to update a dirty git tree!" >&2
 280             echo "Commit or stash your changes first and retry." >&2
 281             exit 1
 282         fi
 283
 284         $GCC_GIT pull ${silent+-q} --rebase ${1+"$@"}
 285         if [ $? -ne 0 ]; then
 286             (touch_files_reexec)
 287             echo "git pull of full tree failed." >&2
 288             exit 1
 289         fi
 290
 291         revision=`$GCC_GIT log -n1 --pretty=%p:%t:%H`
 292         branch=`$GCC_GIT name-rev --name-only HEAD || :`
 293         ;;
 294
 295     hg)
 296         chat "Updating HG tree"
 297
 298         # Add -q so untracked files aren't listed.
 299         if [ `$GCC_HG status -q | wc -l` -gt 0 ]; then
 300             echo "Attempting to update a dirty hg tree!" >&2
 301             echo "Commit or revert your changes first and retry." >&2
 302             exit 1
 303         fi
 304
 305         # Check for mq extension.  mq patches must be popped so tip has
 306         # been converted from the SVN tree.
 307         if [ -d .hg/patches ] && [ `$GCC_HG qapplied | wc -l` -gt 0 ]; then
 308             # FIXME: Perhaps pop queue instead?  We could do that since we
 309             # know the tree is clean.
 310             echo "Attempting to update hg tree with mq patches applied!" >&2
 311             echo "Pop your patches first and retry." >&2
 312             exit 1
 313         fi
 314
 315         # Update tree, but make sure to only pull the default branch.
 316         # Otherwise all branches in the upstream repo are added, even if
 317         # only a single one has been cloned.
 318         $GCC_HG pull ${silent+-q} -r`$GCC_HG branch` ${1+"$@"}
 319         if [ $? -ne 0 ]; then
 320             (touch_files_reexec)
 321             echo "hg pull of full tree failed." >&2
 322             exit 1
 323         fi
 324
 325         # Update tree.  Needs to be done separately from pull so
 326         # gcc_update -rREV works.
 327         $GCC_HG update ${silent+-q} ${1+"$@"}
 328         if [ $? -ne 0 ]; then
 329             (touch_files_reexec)
 330             echo "hg update of full tree failed." >&2
 331             exit 1
 332         fi
 333
 334         # Extract SVN revision corresponding to parents, as stored by
 335         # hg convert.  Before hg 1.4.3, there's no template keyword
 336         # corresponding to the extra: tag, so need to use hg log --debug
 337         # to extract the info.
 338         parents=`$GCC_HG parents --template '{rev}'`
 339         revision=`$GCC_HG log --debug -r$parents | \
 340             sed -ne "/^extra:.*convert_revision=svn:/ {
 341                 s%^.*@%%
 342                 p
 343             }"`
 344         branch=`$GCC_HG branch`
 345         # trunk in SVN parlance shows up as default branch in hg.
 346         [ x$branch = x"default" ] && branch="trunk"
 347         ;;
 348
 349     svn)
 350         chat "Updating SVN tree"
 351
 352         $GCC_SVN ${silent+-q}  --non-interactive update ${1+"$@"}
 353         if [ $? -ne 0 ]; then
 354             (touch_files_reexec)
 355             echo "SVN update of full tree failed." >&2
 356             exit 1
 357         fi
 358
 359         revision=`svn info | awk '/Revision:/ { print $2 }'`
 360         branch=`svn info | sed -ne "/URL:/ {
 361             s,.*/trunk,trunk,
 362             s,.*/branches/,,
 363             s,.*/tags/,,
 364             p
 365         }"`
 366         ;;
 367 esac
 368
 369 rm -f LAST_UPDATED gcc/REVISION
 370 {
 371     date
 372     echo "`TZ=UTC date` (revision $revision)"
 373 } > LAST_UPDATED
 374 echo "[$branch revision $revision]" > gcc/REVISION
 375
 376 touch_files_reexec