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SGI Developer Toolbox 6.1
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SGI Developer Toolbox 6.1 - Disc 4.iso
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mkdepend
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1994-08-01
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6KB
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234 lines
#! /bin/sh
# $Header: /usr/people/sam/fax/port/linux/RCS/mkdepend,v 1.3 1994/02/28 14:28:13 sam Rel $
#
# FlexFAX Facsimile Software
#
# Copyright (c) 1990, 1991, 1992, 1993, 1994 Sam Leffler
# Copyright (c) 1991, 1992, 1993, 1994 Silicon Graphics, Inc.
#
# Permission to use, copy, modify, distribute, and sell this software and
# its documentation for any purpose is hereby granted without fee, provided
# that (i) the above copyright notices and this permission notice appear in
# all copies of the software and related documentation, and (ii) the names of
# Sam Leffler and Silicon Graphics may not be used in any advertising or
# publicity relating to the software without the specific, prior written
# permission of Sam Leffler and Silicon Graphics.
#
# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
#
# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
# NAME
# mkdepend - compute header file dependencies
# SYNOPSIS
# mkdepend [-c compiler] [-e sedprog] [-f force] [-ipr] [-s sentinel]
# depfile file ...
# DESCRIPTION
# See mkdepend(1).
#
me=$0
usage="usage: $me [-c compiler] [-e sedprog] [-f force] [-ipr]\n\t[-s sentinel] depfile [file ...]"
depgen="gcc -M"
incremental=no
rawdepinput=no
#
# Process options and arguments. We put quotes around the edit (-e) arguments
# and use eval "sed -e ..." later, to preserve spaces in the edit command.
#
set -- "$@"
while [ $# -gt 0 ] ; do
case $1 in
-c) depgen=$2; shift;;
-e) sedprog="$sedprog -e '$2'"; shift;;
-f) force="$force $2"; shift;;
-i) incremental=yes;;
-p) depgen=collapse pcount=$2 rawdepinput=yes; shift;;
-r) depgen=cat rawdepinput=yes;;
-s) sentinel=$2 ; shift;;
-*) echo $usage; exit 2;;
*) break;;
esac
shift
done
if [ $# -eq 0 ] ; then
echo $usage; exit 2
fi
newdepfile=$1
depfiledir=`dirname $1`
olddepfile=$depfiledir/#`basename $1`
shift
#
# A shell function to collapse dependencies of targets in subdirectories
# on common rightsides.
#
collapse() {
sed -e 's@/\([^/:]*\): @/%\1: @' $* |
sort -t% +1 |
uniq |
awk -F: '
BEGIN {
total = '$pcount'
}
function flush(group, lastdir, dirname, count) {
for (dirname in group)
count++
if (count == total) {
print group[lastdir]
} else {
for (dirname in group)
print dirname group[dirname]
}
for (dirname in group)
delete group[dirname]
}
{
percent = index($1, "%")
name = substr($1, percent + 1)
if (name != basename || $2 != rightside) {
flush(group, dirname)
basename = name
rightside = $2
}
dirname = substr($1, 1, percent - 1)
group[dirname] = basename ":" rightside
}
END {
flush(group, dirname)
}' |
sort
}
#
# An awk script to compress and pretty-print dependencies.
#
awkprog='
BEGIN {
FS = ":"
INDENT = "\t"
INDENTSIZE = 8
MAXLINE = 72
MAXINDENTEDLINE = MAXLINE - INDENTSIZE - 1
}
#
# For each line of the form "target1 ... targetN: dependent", where the
# spaces are literal blanks, do the following:
#
{
if ($1 != target) {
if (depline) print depline
target = $1
depline= $0 "'"$force"'"
lim = MAXLINE
} else {
if (length(depline) + length($2) > lim) {
print depline " \\"
depline = INDENT
lim = MAXINDENTEDLINE
}
depline = depline $2
}
}
END {
if (depline) print depline
}'
#
# Save the old file in case of problems. Define some temporary files for
# incremental make depend. Clean up if interrupted.
#
olddeps=/tmp/olddeps.$$
newdeps=/tmp/newdeps.$$
tmpdeps=$depfiledir/tmpdeps.$$
if test "$incremental" = yes; then
trapcmds="rm -f $olddeps $newdeps $tmpdeps;"
fi
if test -f "$newdepfile"; then
trapcmds="$trapcmds mv -f \\$olddepfile \\$newdepfile;"
ln $newdepfile $olddepfile
echo "# placeholder in case make includes me" > $tmpdeps
mv -f $tmpdeps $newdepfile
fi
trap "$trapcmds exit 0" 1 2 15
#
# Remove any old dependencies from the file.
#
firstline="#$sentinel DO NOT DELETE THIS LINE -- make depend uses it"
lastline="#$sentinel DO NOT DELETE THIS 2nd LINE -- make depend uses it"
if test -f "$olddepfile"; then
sed -e "/^$firstline/,/^$lastline/d" $olddepfile
fi > $newdepfile
#
# Delimit the beginning of the dependencies. Save the old dependencies
# in incremental mode.
#
echo $firstline >> $newdepfile
if test $incremental = yes; then
#
# XXX Workaround for this sed bug: 1,/pat/d deletes 1,$ if line 1
# XXX and only line 1 matches pat.
#
(echo '# food for sed bug to eat'; cat $olddepfile 2> /dev/null) |
sed -e "1,/^$firstline/d" -e "/^$lastline/"',$d' > $olddeps
#
# Compose an awk program that deletes pretty-printed dependencies
# from $olddeps that involve basenames of objects (in the raw input)
# or sources (arguments) whose dependencies are being updated.
#
awkinc='/^[^ ]/ { deleting = 0; }'
if test $rawdepinput = yes; then
cat $* > $newdeps
for f in `sed -e 's@^\([^:/]*\)\.[^:/]*: .*@\1@' \
-e 's@^[^:]*/\([^:/]*\)\.[^:/]*: .*@\1@' \
$newdeps |
sort -u`; do
list="$list $f"
done
set -- $newdeps
else
for f in $*; do
list="$list `expr ./$f : '.*/\(.*\)\..*'`"
done
fi
for f in $list; do
awkinc="$awkinc /^$f\./ || /^[^ :]*\/$f\./ { deleting = 1; }"
done
awkinc="$awkinc { if (!deleting) print \$0; }"
awk "$awkinc" $olddeps >> $newdepfile
rm -f $olddeps
fi
#
# Process source files - the sed commands and their functions are:
# s:[^\./][^\./]*/\.\./::g rewrite "dir/../path" to be "path"
# s:\([/ ]\)\./:\1:g rewrite " ./path" to be " path" and
# remove the "./" from ".././h/x.h"
#
$depgen $* |
eval "sed \
-e :loop -e 's:[^\./][^\./]*/\.\./::g' -e tloop \
-e 's:\([/ ]\)\./:\1:g' \
$sedprog" |
awk "$awkprog" >> $newdepfile
echo $lastline >> $newdepfile
rm -f $olddepfile $newdeps