[thirdparty/gcc.git] / contrib / check_makefile_deps.sh

#! /bin/sh
#
# Check for accurate dependencies in gcc/Makefile.in.
#
# Copyright (C) 2008, 2012 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:
Commit	Line	Data
36eba48c	1	#! /bin/sh
	2	#
	3	# Check for accurate dependencies in gcc/Makefile.in.
	4	#
71e45bc2	5	# Copyright (C) 2008, 2012 Free Software Foundation, Inc.
36eba48c	6	# Written by Ralf Wildenhues <Ralf.Wildenhues@gmx.de>.
	7	#
	8	# This script is Free Software, and it can be copied, distributed and
	9	# modified as defined in the GNU General Public License. A copy of
	10	# its license can be downloaded from http://www.gnu.org/copyleft/gpl.html
	11	#
	12	# Start this script in an up to date build-tree/gcc directory.
	13	# Using it in stage1 only works if the host compiler is GCC.
	14
	15	# To continue an interrupted check, make sure there are no *.o.backup
	16	# files lying around (i.e., move them back to their original name),
	17	# and set $start_after to the name of the last object that should be skipped.
	18	start_after=
	19
	20	# Skip some objects unconditionally; make sure each name in this list is
	21	# surrounded by spaces.
f16c00a6	22	skip=" crtbegin.o crtbeginS.o crtbeginT.o crtend.o crtendS.o crtfastmath.o crtprec64.o crtprec80.o crtprec32.o ecrti.o ecrtn.o ncrti.o ncrtn.o "
36eba48c	23
	24	# Files which show up as dependencies other than through unconditional #include.
	25	# This is an egrep pattern.
	26	hidden_dep_files='(BASE-VER\|DATESTAMP\|DEV-PHASE\|Makefile\|xcoffout\.h\|basic-block\.h\|bconfig\.h)$'
	27
	28	: ${MAKE=make}
	29	: ${EGREP="grep -E"}
	30
	31	# -------------------------------------------------------------------------
	32	# There should be no need for changes beyond this point.
	33
	34	set -e
	35	st=0
	36
f16c00a6	37	if test -f c-family/c-common.o; then :; else
36eba48c	38	echo "$0: rerun in an up to date build-tree/gcc directory" >&2
	39	exit 1
	40	fi
	41
	42	for obj in *.o
	43	do
	44	if test -n "$start_after"; then
	45	if test $obj = $start_after; then
	46	start_after=
	47	fi
	48	continue
	49	fi
	50	case $skip in \ $obj\ ) continue ;; esac
	51
	52	mv -f $obj $obj.backup
	53	${MAKE} $obj CFLAGS='-MM -MF depfile'
	54	mv -f $obj.backup $obj
	55	${MAKE} -t
	56	LC_ALL=C ${MAKE} -d $obj >make-d-log
	57	hdrs=`cat depfile`
	58	for hdr in $hdrs; do
	59	case $hdr in
	60	: \| .o \| \\ \| /* ) ;;
	61	*)
	62	echo $hdr ;;
	63	esac
	64	done < depfile \|
	65	LC_ALL=C sort -u > hdrs
	66
	67
	68	sed -n '/.Prerequisite..\([^ ]\). is newer than target .'"$obj"'.*/s//\1/p' \
	69	< make-d-log \|
	70	LC_ALL=C sort -u > not-up-to-date
	71	if test -s not-up-to-date; then
	72	st=1
	73	echo "$0: error: prerequisites for $obj are not up to date:" >&2
	74	cat not-up-to-date >&2
	75	fi
	76	sed -n '/.Prerequisite..\([^ ]\). is older than target .'"$obj"'.*/s//\1/p' \
	77	< make-d-log \|
	78	LC_ALL=C sort -u > deps
	79	missing_deps=`LC_ALL=C join -v 1 hdrs deps`
	80	unneeded_deps=`LC_ALL=C join -v 2 hdrs deps \| $EGREP -v "$hidden_dep_files" \|\| :`
	81	if test -n "$missing_deps"; then
	82	st=1
	83	echo "missing deps for $obj:"
	84	echo "$missing_deps" \| sed 's/^/ /'
	85	fi
	86	if test -n "$unneeded_deps"; then
	87	# unneeded dependencies are not a big problem, so they cause no failure.
	88	echo "unneeded deps for $obj:"
	89	echo "$unneeded_deps" \| sed 's/^/ /'
	90	fi
	91	done
	92	exit $st
	93
	94	# vi:sw=2: