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#!/bin/sh
# @(#)conf/lib/mkdepend.sh 1.3 02 Dec 1990 06:14:18
# build a list of dependencies and insert them at the end of the make file
#
# usage: makedepend -Idir ... makefile file.c ...
#
# Copyright (C) 1987, 1988 Ronald S. Karr and Landon Curt Noll
#
# See the file COPYING, distributed with smail, for restriction
# and warranty information.
# gather together the -Idir arguments to be passed to cc
IDIRS=
while expr "$1" : "-I.*" > /dev/null; do
IDIRS="$IDIRS $1"
shift
done
# get the name of the makefile from the first arg and drop it
makefile="$1"
shift
# remove any previous attempts at building the new makefile
/bin/rm -f X$makefile
# remove everything in the makefile after the magic line
# and append the dependency information
( sed '/^# DO NOT REMOVE THIS LINE/q' < $makefile;
echo '# Miscellaneous dependencies'
# build dependencies for all files in the arg list
for i in "$@"; do
# ignore empty arguments
if [ ! "$i" ]; then
continue
fi
# the following line grabs all of the included files
cc -E -DDEPEND $IDIRS "$i" |
# grab filenames from /lib/cpp line and filename information
# this is of the form:
#
# # line-number "filename"
#
# the compiler with the sun 3 produces extra garbage after
# the quoted filename.
sed -n 's/^#[ ]*[0-9]*[ ]*"\(.*\)"[ 0-9]*$/\1/p' |
sed 's%^\./%%' | # remove ./ prefixes
# next remove
sort | uniq |
# use awk to put a reasonable number of them on a line
awk '
BEGIN {
srcfile="'"$i"'"
objfile=substr(srcfile, 1, length(srcfile)-2) ".o"
line=objfile ": "
n = 0
}
{ if (length(line) + length($0) > 78 && n > 0) {
print line ""; line=objfile ": "; n = 0;
}
line=line " " $0; n++;
}
END { if (n > 0) { print line } }'
done ) > X$makefile
# save a backup copy and replace the old makefile with the new one
mv -f $makefile .$makefile
mv X$makefile $makefile
# all done
exit 0
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