315 lines
7.3 KiB
Bash
315 lines
7.3 KiB
Bash
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# NAME:
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# mkdeps - generate dependencies
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#
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# SYNOPSIS:
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# mkdeps [options] file ...
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#
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# DESCRIPTION:
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# This script updates "makefile" with dependencies for
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# "file"(s). It borrows ideas from various makedepend scripts
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# and should be compatible with most.
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#
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# By default we use grep to extract include file names from
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# source files. We source an "rc" file '$Mydir/.${Myname}rc' which
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# can contain variable assignments such as:
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#.nf
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#
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# cpp_c=/usr/lib/cpp
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# cpp_cc=g++ -E
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# ...
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#
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#.fi
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# If the variable 'cpp_$suffix' is set, we use it as our cpp in
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# place of grep. The program referenced by these variables are
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# expected to produce output like:
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#.nf
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#
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# # 10 \"/usr/include/stdio.h\" 1
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#
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#.fi
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# This allows us to skip most of our processing. For lex,yacc
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# and other source files, grep is probably just as quick and
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# certainly more portable.
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#
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# If the "rc" file does not exist, we create it and attempt to
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# find cpp or an equivalent cc invocation to assign to 'cpp_c'.
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#
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# AUTHOR:
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# Simon J. Gerraty <sjg@zen.void.oz.au>
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#
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# RCSid:
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# $Id: mkdeps.sh,v 1.23 2002/11/29 06:58:59 sjg Exp $
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#
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# @(#) Copyright (c) 1993 Simon J. Gerraty
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#
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# This file is provided in the hope that it will
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# be of use. There is absolutely NO WARRANTY.
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# Permission to copy, redistribute or otherwise
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# use this file is hereby granted provided that
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# the above copyright notice and this notice are
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# left intact.
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#
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# Please send copies of changes and bug-fixes to:
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# sjg@zen.void.oz.au
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#
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Myname=`basename $0 .sh`
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Mydir=`dirname $0`
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case `echo -n .` in
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-n*) N=; C="\c";;
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*) N=-n; C=;;
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esac
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cc_include=-I/usr/include
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TF=/tmp/dep.$$
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EF=/tmp/deperr.$$
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> $EF
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case "$*" in
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*-n*) # don't use rc file
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rc=/dev/null
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norc=yes;;
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*)
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rc=$Mydir/.${Myname}rc
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;;
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esac
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update=
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Include=include
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if [ x"$norc" = x -a -f $rc ]; then
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. $rc
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else
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# if /usr/lib/cpp or equivalent is available it is better than
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# grepping .c files.
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# See what (if anything) works on this system...
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echo : > $rc
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echo "# pre-processor for .c files" >> $rc
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# try a couple of sane places first
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for d in /usr/libexec /usr/lib /usr/bin /lib /usr/ccs/bin
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do
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cpp_c=$d/cpp
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[ -x $cpp_c ] && break
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done
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if [ -x $cpp_c ]; then
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echo cpp_c=$cpp_c >> $rc
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else
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cpp_c=
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# rats see if cc can be used
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echo "#include <stdio.h>" > /tmp/f$$.c
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echo "main() { return 0; }" >> /tmp/f$$.c
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# try some sensible args to cc
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for arg in -E -P -M
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do
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ok=`${REALCC:-${CC:-cc}} $arg /tmp/f$$.c 2>/dev/null | grep '^#.*stdio.h' | tail -1`
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case "$ok" in
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"") ;;
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*)
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cpp_c="${REALCC:-${CC:-cc}} $arg"
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echo cpp_c="'$cpp_c'" >> $rc
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break;;
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esac
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done
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rm -f /tmp/f$$.c
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fi
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fi
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clean_up() {
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trap "" 2 3
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trap 0
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if [ -s $EF ]; then
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egrep -vi "included from|warning" $EF > ${EF}2
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if [ -s ${EF}2 ]; then
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cat $EF >&2
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rm -f .depend
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ests=1
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fi
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fi
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rm -f $TF $EF*
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exit ${ests:-0}
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}
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# this lot does not work on HPsUX - complain to Hp.
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trap clean_up 0
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trap exit 2 3
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get_incs() {
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case "$cpp" in
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grep)
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# set IGNORE="<" to skip system includes
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egrep '^#[ ]*include' $* | egrep -v "$IGNORE" | \
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sed -e 's/^.*include[^"<]*["<]//' -e 's/[">].*//g';;
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*)
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# $cpp (eg. /usr/lib/cpp or cc -E) should produce output like:
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# 1 "/usr/include/stdio.h" 2
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# set IGNORE=/usr/include to skip system includes
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$cpp $cpp_opts $cc_include $* 2>> $EF | egrep '^#.*\.h"' | sed 's,^#.*"\(.*\)".*,\1,' |
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egrep -v "$IGNORE" | sort -u;;
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esac
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}
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gen_deps() {
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llen=$1
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shift
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for ifile in $*
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do
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case "$cpp" in
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grep)
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# this lot is not needed if not using grep.
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for dir in $srcdir $dirlist /usr/include
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do
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[ -f "$dir/$ifile" ] && break
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done
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if [ ! -f "$dir/$ifile" ]; then
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# produce a useful error message (useful to emacs or error)
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iline=`grep -n ".*include.*[\"<]$ifile[\">]" $file | cut -d: -f1`
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echo "\"$file\", line $iline: cannot find include file \"$ifile\"" >> $EF
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# no point adding to dependency list as the resulting makefile
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# would not work anyway...
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continue
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fi
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ifile=$dir/$ifile
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# check whether we have done it yet
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case `grep "$ifile" $TF` in
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"") echo "$ifile" >> $TF;;
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*) continue;; # no repeats...
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esac
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;;
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esac
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len=`expr "$ifile " : '.*'`
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if [ "`expr $llen + $len`" -gt ${width:-76} ]; then
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echo "\\" >> .depend
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echo $N " $C" >> .depend
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llen=8
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fi
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echo $N "$ifile $C" >> .depend
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llen=`expr $llen + $len`
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case "$cpp" in
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grep)
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# this lot is not needed unless using grep.
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ilist=`get_incs $ifile` # recurse needed?
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[ "$ilist" ] && llen=`gen_deps $llen $ilist`
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;;
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esac
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done
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echo $llen
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}
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for f in makefile Makefile
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do
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test -s $f && { MAKEFILE=$f; break; }
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done
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MAKEFILE=${MAKEFILE:-makefile}
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IGNORE=${IGNORE:-"^-"} # won't happen
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obj=o
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cpp_opts= # incase cpp != grep
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vpath=
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append=
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progDep=
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set -- `getopt "AanNV:s:w:o:I:D:b:f:i:p" "$@"`
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for key in "$@"
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do
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case $key in
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--) shift; break;;
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-A) Include=;; # cat .depend >> $MAKEFILE
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-a) append=yes; shift;;
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-n) shift;; # ignore rc
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-N) update=no; shift;; # don't update $MAKEFILE
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-I) cpp_opts="$cpp_opts$1$2 "; dirlist="$dirlist $2"; shift 2;;
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-o) obj=$2; shift 2;;
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-s) shift 2;; # can't handle it anyway...
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-w) width=$2; shift 2;;
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-f) MAKEFILE=$2; shift 2;;
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-b) BASEDIR=$2; shift 2;;
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-i) IGNORE="$2"; shift 2;; # ignore headers matching this...
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-D) cpp_opts="$cpp_opts$1$2 "; shift 2;;
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-V) VPATH="$2"; shift 2;; # where to look for files
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-p) progDep=yes; shift;;
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esac
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done
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[ "$VPATH" ] && vpath=`IFS=:; set -- $VPATH; echo $*`
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[ "$append" ] || > .depend
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for file in $*
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do
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cpp=
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suffix=`expr $file : '.*\.\([^.]*\)'`
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eval cpp=\"\${cpp_${suffix}:-grep}\"
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if [ ! -f $file -a "$vpath" ]; then
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for d in . $vpath
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do
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[ -f $d/$file ] && { file=$d/$file; break; }
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done
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fi
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srcdir=`dirname $file`
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base=`basename $file .$suffix`
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ilist=`get_incs $file`
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if [ "$ilist" ]; then
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> $TF
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if [ "$progDep" ]; then
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echo "$base: $file \\" >> .depend
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else
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echo "$base.$obj: $file \\" >> .depend
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fi
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echo $N " $C" >> .depend
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llen=8
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llen=`gen_deps $llen $ilist`
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echo >> .depend
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echo >> .depend
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elif [ "$progDep" ]; then
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echo "$base: $file" >> .depend
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echo >> .depend
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fi
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done
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if [ -s .depend ]; then
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# ./foo.h looks ugly
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mv .depend $TF
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{ test "$BASEDIR" && sed -e "s;$BASEDIR;\$(BASEDIR);g" $TF || cat $TF; } |
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sed 's;\([^.]\)\./;\1;g' > .depend
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#
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# Save the manually updated section of the makefile
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#
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if [ x$update != xno ]; then
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trap "" 2 # don't die if we got this far
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# if make doesn't support include, then append our deps...
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depended=`grep 'include.*\.depend' $MAKEFILE`
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test "$depended" && clean_up
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sed '/^# DO NOT DELETE.*depend.*$/,$d' < $MAKEFILE > $TF
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mv $TF $MAKEFILE
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cat <<! >> $MAKEFILE
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# DO NOT DELETE THIS LINE -- make depend depends on it
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# Do not edit anything below, it was added automagically by $Myname.
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!
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case "$Include" in
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"") cat .depend >> $MAKEFILE;;
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.include) echo '.include ".depend"' >> $MAKEFILE;;
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include) echo include .depend >> $MAKEFILE;;
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esac
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fi
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fi
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clean_up
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