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host-mkdep.in revision 1.24 
      1 #!@BSHELL@ -
      2 #
      3 #	$NetBSD: host-mkdep.in,v 1.24 2013/03/05 03:06:21 christos Exp $
      4 #
      5 # Copyright (c) 1991, 1993
      6 #	The Regents of the University of California.  All rights reserved.
      7 #
      8 # Redistribution and use in source and binary forms, with or without
      9 # modification, are permitted provided that the following conditions
     10 # are met:
     11 # 1. Redistributions of source code must retain the above copyright
     12 #    notice, this list of conditions and the following disclaimer.
     13 # 2. Redistributions in binary form must reproduce the above copyright
     14 #    notice, this list of conditions and the following disclaimer in the
     15 #    documentation and/or other materials provided with the distribution.
     16 # 3. All advertising materials mentioning features or use of this software
     17 #    must display the following acknowledgement:
     18 #	This product includes software developed by the University of
     19 #	California, Berkeley and its contributors.
     20 # 4. Neither the name of the University nor the names of its contributors
     21 #    may be used to endorse or promote products derived from this software
     22 #    without specific prior written permission.
     23 #
     24 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27 # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34 # SUCH DAMAGE.
     35 #
     36 #	@(#)mkdep.old.compiler	8.1 (Berkeley) 6/6/93
     37 #
     38 
     39 APPEND=false
     40 MERGE=false
     41 OPTIONAL=false
     42 AWK_OPTIONAL=
     43 QUIET=false
     44 CPPFLAGS=
     45 NEWEXT=.o
     46 PREFIX=
     47 OUTFILE=.depend
     48 SRCS=
     49 
     50 usage()
     51 {
     52 	echo "Usage: $0 [-adopq] [-s .suffixes] [-f .depend] -- [flags] file ..." >&2
     53 	exit 1
     54 }
     55 
     56 set_objlist()
     57 {
     58 	if [ -n "$NEWEXT" ]; then
     59 		oifs="$IFS"
     60 		IFS=" ,"
     61 		set -- $NEWEXT
     62 		IFS="$oifs"
     63 		objlist=
     64 		for suf in "$@"; do
     65 			objlist="$objlist${objlist:+ }$PREFIX$file$suf"
     66 		done
     67 	else
     68 		objlist="$PREFIX$file"
     69 	fi
     70 }
     71 
     72 # A getopt compatible command line parser in shell comands.
     73 # (don't trust the shell builtin getopts to be in a known state on error)
     74 while [ $# -gt 0 ]; do
     75 	option="${1#-}"
     76 	[ "$option" = "$1" -o -z "$option" ] && break
     77 	while
     78 		optarg="${option#?}"
     79 		option="${option%$optarg}"
     80 
     81 		case "-$option" in
     82 		-a)	APPEND=true;;
     83 		-d)	MERGE=true;;
     84 		-o)	OPTIONAL=true; AWK_OPTIONAL='print ".OPTIONAL:" $0';;
     85 		-p)	NEWEXT=;;
     86 		-q)	QUIET=true;;
     87 		-[iv])	;;
     88 
     89 		-[fPs])	# Options with arguments
     90 			[ -z "$optarg" ] && {
     91 				[ $# = 1 ] && usage
     92 				shift
     93 				optarg="$1"
     94 			}
     95 			case "-$option" in
     96 			-f)	OUTFILE="$optarg";;
     97 			-P)	PREFIX="$optarg";;
     98 			-s)	NEWEXT="$optarg";;
     99 			esac
    100 			optarg=
    101 			;;
    102 
    103 		--)	[ -z "$optarg" ] && shift
    104 			break 2
    105 			;;
    106 
    107 		*)	$MERGE && usage
    108 			break 2;
    109 			;;
    110 		esac
    111 		[ -n "$optarg" ]
    112 	do
    113 		option="$optarg"
    114 	done
    115 	shift
    116 done
    117 
    118 [ $# = 0 ] && usage
    119 
    120 if $MERGE; then
    121 	SRCS="$*"
    122 else
    123 	#
    124 	# Process argument list.
    125 	# This is tricky, because arguments may contain spaces and other
    126 	# escapes characters.  The argument list is used like a tail queue.
    127 	# $cppargs has one x for each unprocessed argument, so when an
    128 	# argument is processed, it is shifted and the corresponding number
    129 	# of x's is removed.  The advantage to counting is that suffix removal
    130 	# works without fork.
    131 	#
    132 	cppargs=
    133 	for arg; do
    134 		cppargs="x$cppargs"
    135 	done
    136 	while [ -n "$cppargs" ]; do
    137 		case "$1" in
    138 		-L)			# takes an arg, but ignored
    139 				shift 2
    140 				cppargs=${cppargs%xx}
    141 				;;
    142 
    143 		-c|-[lLMOW]*)		# takes no extra args
    144 				shift
    145 				cppargs=${cppargs%x}
    146 				;;
    147 
    148 		-[IDU]*)
    149 				set -- "$@" "$1"
    150 				shift
    151 				cppargs=${cppargs%x}
    152 				;;
    153 
    154 		-[IDU]|-include|-isystem|-isysroot)
    155 				set -- "$@" "$1" "$2"
    156 				shift 2
    157 				cppargs=${cppargs%xx}
    158 				;;
    159 				
    160 		-isystem-cxx|-cxx-isystem)
    161 				set -- "$@" "-isystem" "$2"
    162 				shift 2
    163 				cppargs=${cppargs%xx}
    164 				;;
    165 
    166 		-no-cpp-precomp)	# This is a Darwin-specific option.
    167 				set -- "$@" "$1"
    168 				shift
    169 				cppargs=${cppargs%x}
    170 				;;
    171 
    172 		-nostdinc*)	# This is a gcc/g++ ism; ignore if not gcc/g++
    173 				case "@CFLAGS@" in
    174 				*-O2*)	# Autoconf puts -O2 when gcc only
    175 					set -- "$@" "$1"
    176 					;;
    177 				esac	
    178 				shift
    179 				cppargs=${cppargs%x}
    180 				;;
    181 		--sysroot*)
    182 				shift
    183 				;;
    184 		-[iv])
    185 				shift
    186 				;;
    187 		-*)		
    188 				echo "$0: Unknown option: $1" 1>&2 # all other -options
    189 				exit 1
    190 				;;
    191 
    192 		*)	
    193 				SRCS="$SRCS $1"	# source file
    194 				shift
    195 				cppargs=${cppargs%x}
    196 				;;
    197 		esac
    198 	done
    199 fi
    200 
    201 [ -z "$SRCS" ] && usage
    202 
    203 TMP=/tmp/mkdep$$
    204 rm -f $TMP
    205 
    206 trap 'rm -f $TMP; exit 1' 1 2 3 13 15
    207 
    208 if $MERGE; then
    209 	for f in $SRCS; do
    210 		if [ ! -f "$f" ]; then
    211 			if ! $QUIET; then echo "$0: Ignoring $f" >&2; fi
    212 			continue
    213 		fi
    214 		while IFS=':'; read target dependents; do
    215 			IFS=
    216 			t1="${target#* }"
    217 			file="${target%.o}"
    218 			if [ "$t1" = "$target" -a "$file" != "$target" ]; then
    219 				set_objlist $file
    220 				target="$objlist"
    221 			fi
    222 			echo "$target:$dependents"
    223 			if "$OPTIONAL"; then
    224 				echo ".OPTIONAL:$dependents"
    225 			fi
    226 		done <$f
    227 	done >$TMP
    228 else
    229 	for f in $SRCS; do
    230 		file=${f##*/}
    231 		file=${file%.*}
    232 		set_objlist $file
    233 
    234 		@CPP@ "$@" $f | @AWK@ '
    235 			/^#/ {
    236 				# Be as tolerant as possible.
    237 				sub(/^#(line)? [ 0-9]*\"?/, "")
    238 				sub(/^#(pragma).*/, "")
    239 				sub(/^<.*/, "")
    240 				sub(/\".*$/, "")
    241 				sub(/ [ 0-9]*$/, "")
    242 
    243 				if ($0 in seenfiles) next
    244 				if ($0 ~ /y.tab.c/) next
    245 
    246 				seenfiles[$0] = 1
    247 				print "'"$objlist"'" ": " $0
    248 				'"$AWK_OPTIONAL"'
    249 			}
    250 		' >> $TMP
    251 	done
    252 fi
    253 
    254 if $APPEND; then
    255 	cat $TMP >> $OUTFILE
    256 else
    257 	cat $TMP > $OUTFILE
    258 fi
    259 
    260 rm -f $TMP
    261 exit 0
    262