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host-mkdep.in revision 1.18 
      1 #!@BSHELL@ -
      2 #
      3 #	$NetBSD: host-mkdep.in,v 1.18 2010/02/20 15:04:03 joerg 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 OUTFILE=.depend
     47 SRCS=
     48 
     49 usage()
     50 {
     51 	echo "Usage: $0 [-adopq] [-s .suffixes] [-f .depend] -- [flags] file ..." >&2
     52 	exit 1
     53 }
     54 
     55 set_objlist()
     56 {
     57 	if [ -n "$NEWEXT" ]; then
     58 		oifs="$IFS"
     59 		IFS=" ,"
     60 		set -- $NEWEXT
     61 		IFS="$oifs"
     62 		objlist=
     63 		for suf in "$@"; do
     64 			objlist="$objlist${objlist:+ }$file$suf"
     65 		done
     66 	else
     67 		objlist="$file"
     68 	fi
     69 }
     70 
     71 # A getopt compatible command line parser in shell comands.
     72 # (don't trust the shell builtin getopts to be in a known state on error)
     73 while [ $# -gt 0 ]; do
     74 	option="${1#-}"
     75 	[ "$option" = "$1" -o -z "$option" ] && break
     76 	while
     77 		optarg="${option#?}"
     78 		option="${option%$optarg}"
     79 
     80 		case "-$option" in
     81 		-a)	APPEND=true;;
     82 		-d)	MERGE=true;;
     83 		-o)	OPTIONAL=true; AWK_OPTIONAL='print ".OPTIONAL:" $0';;
     84 		-p)	NEWEXT=;;
     85 		-q)	QUIET=true;;
     86 
     87 		-[fs])	# Options with arguments
     88 			[ -z "$optarg" ] && {
     89 				[ $# = 1 ] && usage
     90 				shift
     91 				optarg="$1"
     92 			}
     93 			case "-$option" in
     94 			-f)	OUTFILE="$optarg";;
     95 			-s)	NEWEXT="$optarg";;
     96 			esac
     97 			optarg=
     98 			;;
     99 
    100 		--)	[ -z "$optarg" ] && shift
    101 			break 2
    102 			;;
    103 
    104 		*)	$MERGE && usage
    105 			break 2;
    106 			;;
    107 		esac
    108 		[ -n "$optarg" ]
    109 	do
    110 		option="$optarg"
    111 	done
    112 	shift
    113 done
    114 
    115 [ $# = 0 ] && usage
    116 
    117 if $MERGE; then
    118 	SRCS="$*"
    119 else
    120 	#
    121 	# Process argument list.
    122 	# This is tricky, because arguments may contain spaces and other
    123 	# escapes characters.  The argument list is used like a tail queue.
    124 	# $cppargs has one x for each unprocessed argument, so when an
    125 	# argument is processed, it is shifted and the corresponding number
    126 	# of x's is removed.  The advantage to counting is that suffix removal
    127 	# works without fork.
    128 	#
    129 	cppargs=
    130 	for arg; do
    131 		cppargs="x$cppargs"
    132 	done
    133 	while [ -n "$cppargs" ]; do
    134 		case "$1" in
    135 		-L)			# takes an arg, but ignored
    136 				shift 2
    137 				cppargs=${cppargs%xx}
    138 				;;
    139 
    140 		-c|-[lLMOW]*)		# takes no extra args
    141 				shift
    142 				cppargs=${cppargs%x}
    143 				;;
    144 
    145 		-[IDU]*)
    146 				set -- "$@" "$1"
    147 				shift
    148 				cppargs=${cppargs%x}
    149 				;;
    150 
    151 		-[IDU]|-include|-isystem)
    152 				set -- "$@" "$1" "$2"
    153 				shift 2
    154 				cppargs=${cppargs%xx}
    155 				;;
    156 				
    157 		-isystem-cxx|-cxx-isystem)
    158 				set -- "$@" "-isystem" "$2"
    159 				shift 2
    160 				cppargs=${cppargs%xx}
    161 				;;
    162 
    163 		-no-cpp-precomp)	# This is a Darwin-specific option.
    164 				set -- "$@" "$1"
    165 				shift
    166 				cppargs=${cppargs%x}
    167 				;;
    168 
    169 		-nostdinc*)	# This is a gcc/g++ ism; ignore if not gcc/g++
    170 				case "@CFLAGS@" in
    171 				*-O2*)	# Autoconf puts -O2 when gcc only
    172 					set -- "$@" "$1"
    173 					;;
    174 				esac	
    175 				shift
    176 				cppargs=${cppargs%x}
    177 				;;
    178 
    179 		-*)		
    180 				echo "$0: Unknown option: $1" 1>&2 # all other -options
    181 				exit 1
    182 				;;
    183 
    184 		*)	
    185 				SRCS="$SRCS $1"	# source file
    186 				shift
    187 				cppargs=${cppargs%x}
    188 				;;
    189 		esac
    190 	done
    191 fi
    192 
    193 [ -z "$SRCS" ] && usage
    194 
    195 TMP=/tmp/mkdep$$
    196 rm -f $TMP
    197 
    198 trap 'rm -f $TMP; exit 1' 1 2 3 13 15
    199 
    200 if $MERGE; then
    201 	for f in $SRCS; do
    202 		if [ ! -f "$f" ]; then
    203 			if ! $QUIET; then echo "$0: Ignoring $f" >&2; fi
    204 			continue
    205 		fi
    206 		while IFS=':'; read target dependants; do
    207 			IFS=
    208 			t1="${target#* }"
    209 			file="${target%.o}"
    210 			if [ "$t1" = "$target" -a "$file" != "$target" ]; then
    211 				set_objlist $file
    212 				target="$objlist"
    213 			fi
    214 			echo "$target:$dependants"
    215 			if "$OPTIONAL"; then
    216 				echo ".OPTIONAL:$dependants"
    217 			fi
    218 		done <$f
    219 	done >$TMP
    220 else
    221 	for f in $SRCS; do
    222 		file=${f##*/}
    223 		file=${file%.*}
    224 		set_objlist $file
    225 
    226 		@CPP@ "$@" $f | @AWK@ '
    227 			/^#/ {
    228 				# Be as tolerant as possible.
    229 				sub(/^#(line)? [ 0-9]*\"?/, "")
    230 				sub(/^#(pragma).*/, "")
    231 				sub(/^<.*/, "")
    232 				sub(/\".*$/, "")
    233 				sub(/ [ 0-9]*$/, "")
    234 
    235 				if ($0 in seenfiles) next
    236 				if ($0 ~ /y.tab.c/) next
    237 
    238 				seenfiles[$0] = 1
    239 				print "'"$objlist"'" ": " $0
    240 				'"$AWK_OPTIONAL"'
    241 			}
    242 		' >> $TMP
    243 	done
    244 fi
    245 
    246 if $APPEND; then
    247 	cat $TMP >> $OUTFILE
    248 else
    249 	cat $TMP > $OUTFILE
    250 fi
    251 
    252 rm -f $TMP
    253 exit 0
    254