mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-03-29 08:20:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

* gcc_update (touch_files): Use a Makefile to touch files.

Browse Source 
From-SVN: r42088
This commit is contained in:
Alexandre Oliva 2001-05-14 19:57:52 +00:00 committed by Alexandre Oliva
parent f327ea3ebe
commit e8b073c1bd
2 changed files with 21 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
contrib/ChangeLog
View File

@ -1,3 +1,7 @@
2001-05-14 Alexandre Oliva <aoliva@redhat.com>
* gcc_update (touch_files): Use a Makefile to touch files.
2001-05-03 Joseph S. Myers <jsm28@cam.ac.uk>
* texi2pod.pl: Add copyright and GPL notices.

37
contrib/gcc_update
View File

@ -98,31 +98,28 @@ 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" $deps; then
# Hmm, it may have got the same timestamp as one of
# its touched dependencies. Wait a second and retry.
sleep 1
echo Touching "$f" once more...
touch $f
fi
fi
done
rm -f Makefile.$$
echo 'all: \' > Makefile.$$
files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
echo '; @true' >> Makefile.$$
files_and_dependencies | sed 's, ,: ,' >> Makefile.$$
files_and_dependencies | sed 's, .*, \\,' >> Makefile.$$
echo ':' >> Makefile.$$
echo ' @for f in $?; do test ! -f $$f && exit 0; done; \' >> Makefile.$$
echo ' echo Touching $@...; \' >> Makefile.$$
echo ' echo Touching $@... 1>&2; \' >> Makefile.$$
echo ' touch $@' >> Makefile.$$
files_and_dependencies | sed 's,[^ ]* ,,;s,$, :,' >> Makefile.$$
while ${MAKE-make} -f Makefile.$$ all | grep . > /dev/null; do
sleep 1
done 2>&1
rm -f Makefile.$$
}
# Whenever we update the tree or install a patch, we may be modifying
# this script. By re-execing it, we ensure that the appropriate
# dependencies and rules will be used.