1 files changed, 202 insertions, 0 deletions
diff --git a/contrib/gcc_update b/contrib/gcc_update
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index 00000000000..e7fa727d61b
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+++ b/contrib/gcc_update
@@ -0,0 +1,202 @@
+#! /bin/sh
+#
+# Update a local CVS tree from the egcs repository, with an emphasis
+# on treating generated files correctly, so that autoconf, bison et
+# al are not required for the ``end'' user.
+#
+# By default all command-line options are passed to `cvs update` in
+# addition to $UPDATE_OPTIONS (defined below). If the first parameter
+# reads --nostdflags, $UPDATE_OPTIONS as well as this parameter itself
+# are omitted. 
+# 
+# If the first parameter reads --patch, the second parameter is considered
+# a patch file.
+# 
+# If the first parameter is --touch, no cvs operation will be performed,
+# only generated files that appear to be out of date in the local tree
+# will be touched.
+#
+# If the first parameter is --list, a list of the generated files and
+# their dependencies will be printed; --help prints this message.
+#
+# Examples:
+#
+# contrib/egcs_update -r egcs_latest_snapshot
+# contrib/egcs_update -A
+# contrib/egcs_update --nostdflags -P -r egcs_1_1_branch gcc/testsuite
+# contrib/egcs_update --patch some-patch
+# contrib/egcs_update --touch
+# contrib/egcs_update --list
+#
+#
+# (C) 1998-1999 Free Software Foundation
+# Originally by Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>, August 1998.
+#
+# This script is Free Software, and it can be copied, distributed and
+# modified as defined in the GNU General Public License.  A copy of
+# its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
+
+
+# Default options used when updating via CVS.
+UPDATE_OPTIONS=-P
+# Add -d to create any directories that exist in the repository but not
+#        locally.
+# Add -A to reset any sticky tags, dates, or `-k' options.
+
+
+# This function prints a list of all generated files, along with their
+# dependencies.  Note that only one target is supported per line: the
+# colon is stripped from the output.
+files_and_dependencies () {
+    sed -e 's/ *#.*//' -e '/^$/d' -e 's/://' <<\EOF
+# All automake dependencies within texinfo
+# In fact, not all, since we do not care about sub-directories that
+# we do not build.  In particular, *.po and *.gmo are not touched.
+texinfo/aclocal.m4: texinfo/configure.in texinfo/acinclude.m4
+texinfo/Makefile.in: texinfo/Makefile.am texinfo/configure.in texinfo/aclocal.m4
+texinfo/configure: texinfo/configure.in texinfo/aclocal.m4
+texinfo/stamp-h.in: texinfo/configure.in texinfo/aclocal.m4 texinfo/acconfig.h
+texinfo/lib/Makefile.in: texinfo/lib/Makefile.am texinfo/configure.in texinfo/aclocal.m4
+texinfo/makeinfo/Makefile.in: texinfo/makeinfo/Makefile.am texinfo/configure.in texinfo/aclocal.m4
+texinfo/util/Makefile.in: texinfo/util/Makefile.am texinfo/configure.in texinfo/aclocal.m4
+# Now, proceed to gcc automatically generated files
+gcc/configure: gcc/configure.in
+gcc/cstamp-h.in: gcc/configure.in gcc/acconfig.h
+gcc/config.in: gcc/cstamp-h.in
+gcc/c-parse.y: gcc/c-parse.in
+gcc/c-parse.c: gcc/c-parse.y
+gcc/c-parse.h: gcc/c-parse.c
+gcc/c-gperf.h: gcc/c-parse.gperf
+gcc/cexp.c: gcc/cexp.y
+gcc/fixinc/fixincl.x: gcc/fixinc/fixincl.tpl gcc/fixinc/inclhack.def
+gcc/fixinc/inclhack.sh: gcc/fixinc/inclhack.def gcc/fixinc/inclhack.tpl gcc/fixinc/hackshell.tpl
+gcc/fixinc/fixincl.sh: gcc/fixinc/inclhack.def gcc/fixinc/inclhack.tpl
+# And then, language-specific files
+gcc/cp/parse.c: gcc/cp/parse.y
+gcc/cp/parse.h: gcc/cp/parse.c
+gcc/objc/objc-parse.y: gcc/c-parse.in
+gcc/objc/objc-parse.c: gcc/objc/objc-parse.y
+gcc/java/parse.h: gcc/java/parse.y
+gcc/java/parse.c: gcc/java/parse.y gcc/java/lex.c gcc/java/parse.h gcc/java/lex.h
+gcc/java/parse-scan.c: gcc/java/parse-scan.y gcc/java/lex.c gcc/java/parse.h gcc/java/lex.h
+# And libraries, at last
+libchill/configure: libchill/configure.in
+libf2c/configure: libf2c/configure.in
+libf2c/libF77/configure: libf2c/libF77/configure.in
+libf2c/libI77/configure: libf2c/libI77/configure.in
+libf2c/libU77/configure: libf2c/libU77/configure.in
+libf2c/libU77/stamp-h.in: libf2c/libU77/configure.in libf2c/libU77/acconfig.h
+libobjc/configure: libobjc/configure.in
+EOF
+}
+
+
+# This function checks whether its first argument is newer than all
+# the other arguments.  It returns success (0) otherwise.
+is_out_of_date () {
+  test `ls -1dt ${1+"$@"} | sed 1q` != "$1"
+}
+
+
+# This function touches generated files such that the ``end'' user does
+# not have to rebuild them.
+touch_files () {
+    files_and_dependencies | while read f deps; do
+	if test -f $f && is_out_of_date "$f" $deps; then
+	    echo Touching "$f"...
+	    touch $f
+	    if is_out_of_date "$f" $deps; then
+		# Hmm, it may have got the same timestamp as one of
+		# its touched dependencies.  Wait a second and retry
+		sleep 1
+		touch $f
+	    fi
+	fi
+    done
+}
+
+
+# This functions applies a patch to an existing tree.
+apply_patch () {
+    if [ -f $1 ]; then
+	echo "Applying patch file $1"
+	case "$1" in
+	*gz)
+	    gzip -d -c $1 | patch -p1 ;;
+	*)
+	    cat $1 | patch -p1 ;;
+	esac
+    fi
+    echo "Adjusting file timestamps"
+    touch_files
+}
+
+# Check whether this indeed looks like a local tree.
+if [ ! -f gcc/version.c ]; then
+    echo "This does not seem to be an egcs tree!"
+    exit
+fi
+
+case "$1" in
+# First of all, check whether we are going to process a patch.
+--patch) 
+    if test "$#" != 2; then
+        echo "$1" expects only one argument >&2
+	exit 1
+    fi
+    apply_patch "${2}"
+    exit $?
+    ;;
+
+--touch)
+    if test "$#" != 1; then
+        echo "$1" does not expect any argument >&2
+	exit 1
+    fi
+    touch_files
+    exit $?
+    ;;
+
+--list)
+    if test "$#" != 1; then
+        echo "$1" does not expect any argument >&2
+	exit 1
+    fi
+    files_and_dependencies | sed 's/ /: /'
+    exit $?
+    ;;
+
+--help)
+    sed -e '1,2d' -e '/^UPDATE_OPTIONS=/{i\
+\
+
+p
+}' \
+	-e '/^$/,$d' -e 's/#//' -e 's/^ //' < $0
+    exit $?
+    ;;
+
+esac
+
+# Check whether this indeed looks like a local CVS tree.
+if [ ! -d CVS ]; then
+    echo "This does not seem to be an egcs CVS tree!"
+    exit
+fi
+
+# Check command-line options
+if [ x"${1}"x = x"--nostdflags"x ]; then
+    shift
+else
+    set -- $UPDATE_OPTIONS ${1+"$@"}
+fi
+
+echo "Updating CVS tree"
+cvs -q update ${1+"$@"}
+if [ $? -ne 0 ]; then 
+    echo "CVS update of full tree failed." >&2
+    exit 1
+fi
+
+echo "Adjusting file timestamps"
+touch_files