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#! /bin/sh
#
# Check for accurate dependencies in gcc/Makefile.in.
#
# Copyright (C) 2008 Free Software Foundation, Inc.
# Written by Ralf Wildenhues <Ralf.Wildenhues@gmx.de>.
#
# 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
#
# Start this script in an up to date build-tree/gcc directory.
# Using it in stage1 only works if the host compiler is GCC.
# To continue an interrupted check, make sure there are no *.o.backup
# files lying around (i.e., move them back to their original name),
# and set $start_after to the name of the last object that should be skipped.
start_after=
# Skip some objects unconditionally; make sure each name in this list is
# surrounded by spaces.
skip=" crtbegin.o crtbeginS.o crtbeginT.o crtend.o crtendS.o crtfastmath.o crtprec64.o crtprec80.o crtprec32.o ecrti.o ecrtn.o ncrti.o ncrtn.o "
# Files which show up as dependencies other than through unconditional #include.
# This is an egrep pattern.
hidden_dep_files='(BASE-VER|DATESTAMP|DEV-PHASE|Makefile|xcoffout\.h|basic-block\.h|bconfig\.h)$'
: ${MAKE=make}
: ${EGREP="grep -E"}
# -------------------------------------------------------------------------
# There should be no need for changes beyond this point.
set -e
st=0
if test -f c-family/c-common.o; then :; else
echo "$0: rerun in an up to date build-tree/gcc directory" >&2
exit 1
fi
for obj in *.o
do
if test -n "$start_after"; then
if test $obj = $start_after; then
start_after=
fi
continue
fi
case $skip in *\ $obj\ *) continue ;; esac
mv -f $obj $obj.backup
${MAKE} $obj CFLAGS='-MM -MF depfile'
mv -f $obj.backup $obj
${MAKE} -t
LC_ALL=C ${MAKE} -d $obj >make-d-log
hdrs=`cat depfile`
for hdr in $hdrs; do
case $hdr in
*: | *.o | \\ | /* ) ;;
*)
echo $hdr ;;
esac
done < depfile |
LC_ALL=C sort -u > hdrs
sed -n '/.*Prerequisite..\([^ ]*\). is newer than target .'"$obj"'.*/s//\1/p' \
< make-d-log |
LC_ALL=C sort -u > not-up-to-date
if test -s not-up-to-date; then
st=1
echo "$0: error: prerequisites for $obj are not up to date:" >&2
cat not-up-to-date >&2
fi
sed -n '/.*Prerequisite..\([^ ]*\). is older than target .'"$obj"'.*/s//\1/p' \
< make-d-log |
LC_ALL=C sort -u > deps
missing_deps=`LC_ALL=C join -v 1 hdrs deps`
unneeded_deps=`LC_ALL=C join -v 2 hdrs deps | $EGREP -v "$hidden_dep_files" || :`
if test -n "$missing_deps"; then
st=1
echo "missing deps for $obj:"
echo "$missing_deps" | sed 's/^/ /'
fi
if test -n "$unneeded_deps"; then
# unneeded dependencies are not a big problem, so they cause no failure.
echo "unneeded deps for $obj:"
echo "$unneeded_deps" | sed 's/^/ /'
fi
done
exit $st
# vi:sw=2:
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