[gcc.git] / gcc / genmultilib

#!/bin/sh 
# Generates multilib.h.
#   Copyright (C) 1994 Free Software Foundation, Inc.

#This file is part of GNU CC.

#GNU CC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2, or (at your option)
#any later version.

#GNU CC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with GNU CC; see the file COPYING.  If not, write to
#the Free Software Foundation, 59 Temple Place - Suite 330,
#Boston, MA 02111-1307, USA.

# This shell script produces a header file which the gcc driver
# program uses to pick which library to use based on the machine
# specific options that it is given.

# The first argument is a list of sets of options.  The elements in
# the list are separated by spaces.  Within an element, the options
# are separated by slashes.  No leading dash is used on the options.
# Each option in a set is mutually incompatible with all other options
# in the set.

# The optional second argument is a list of subdirectory names.  If
# the second argument is non-empty, there must be as many elements in
# the second argument as there are options in the first argument.  The
# elements in the second list are separated by spaces.  If the second
# argument is empty, the option names will be used as the directory
# names.

# The optional third argument is a list of options which are
# identical.  The elements in the list are separated by spaces.  Each
# element must be of the form OPTION=OPTION.  The first OPTION should
# appear in the first argument, and the second should be a synonym for
# it.  Question marks are replaced with equal signs in both options.

# The output looks like
#   #define MULTILIB_MATCHES "\
#   SUBDIRECTORY OPTIONS;\
#   ...
#   "
# The SUBDIRECTORY is the subdirectory to use.  The OPTIONS are
# multiple options separated by spaces.  Each option may start with an
# exclamation point.  gcc will consider each line in turn.  If none of
# the options beginning with an exclamation point are present, and all
# of the other options are present, that subdirectory will be used.
# The order of the subdirectories is such that they can be created in
# order; that is, a subdirectory is preceded by all its parents.

# Here is a example (this is simplified from the actual 680x0 case):
#   genmultilib "m68000/m68020 msoft-float" "m68000 m68020 msoft-float"
#		"m68000=mc68000"
# This produces:
#   #define MULTILIB_MATCHES "\
#   m68000/msoft-float m68000 msoft-float;\
#   m68000/msoft-float mc68000 msoft-float;\
#   m68020/msoft-float m68020 msoft-float;\
#   msoft-float !m68000 !mc68000 !m68020 msoft-float;\
#   m68000 m68000 !msoft-float;\
#   m68000 mc60000 !msoft-float;\
#   m68020 m68020 !msoft-float;\
#   . !m68000 !mc68000 !m68020 !msoft-float;\
#   "
# The effect is that `gcc -msoft-float' (for example) will append
# msoft-float to the directory name when searching for libraries or
# startup files, and `gcc -m68000 -msoft-float' (for example) will
# append m68000/msoft-float.

# Copy the positional parameters into variables.
options=$1
dirnames=$2
matches=$3

# What we want to do is select all combinations of the sets in
# options.  Each combination which includes a set of mutually
# exclusive options must then be output multiple times, once for each
# item in the set.  Selecting combinations is a recursive process.
# Since not all versions of sh support functions, we achieve recursion
# by creating a temporary shell script which invokes itself.
rm -f tmpmultilib
cat >tmpmultilib <<\EOF
#!/bin/sh
# This recursive script basically outputs all combinations of its
# input arguments, handling mutually exclusive sets of options by
# repetition.  When the script is called, ${initial} is the list of
# options which should appear before all combinations this will
# output.  The output looks like a list of subdirectory names with
# leading and trailing slashes.
if [ "$#" != "0" ]; then
  first=$1
  shift
  for opt in `echo $first | sed -e 's|/| |'g`; do
    echo ${initial}${opt}/
  done
  ./tmpmultilib $@
  for opt in `echo $first | sed -e 's|/| |'g`; do
    initial="${initial}${opt}/" ./tmpmultilib $@
  done
fi
EOF
chmod +x tmpmultilib

combinations=`initial=/ ./tmpmultilib ${options}`

rm -f tmpmultilib

# Construct a sed pattern which will convert option names to directory
# names.
todirnames=
if [ -n "${dirnames}" ]; then
  set x ${dirnames}
  shift
  for set in ${options}; do
    for opt in `echo ${set} | sed -e 's|/| |'g`; do
      if [ "$1" != "${opt}" ]; then
        todirnames="${todirnames} -e s|/${opt}/|/${1}/|g"
      fi
      shift
    done
  done
fi

# Construct a sed pattern which will add negations based on the
# matches.  The semicolons are easier than getting the shell to accept
# quoted spaces when expanding a variable.
matchnegations=
for i in ${matches}; do
  l=`echo $i | sed -e 's/=.*$//' -e 's/?/=/g'`
  r=`echo $i | sed -e 's/^.*=//' -e 's/?/=/g'`
  matchnegations="${matchnegations} -e s/;!${l};/;!${l};!${r};/"
done

# We need another recursive shell script to correctly handle positive
# matches.  If we are invoked as
#   genmultilib "opt1 opt2" "" "opt1=nopt1 opt2=nopt2"
# we must output
#   opt1/opt2 opt1 opt2
#   opt1/opt2 nopt1 opt2
#   opt1/opt2 opt1 nopt2
#   opt1/opt2 nopt1 nopt2
# In other words, we must output all combinations of matches.
rm -f tmpmultilib2
cat >tmpmultilib2 <<\EOF
#!/bin/sh
# The positional parameters are a list of matches to consider.
# ${dirout} is the directory name and ${optout} is the current list of
# options.
if [ "$#" = "0" ]; then
  echo "${dirout} ${optout};\\"
else
  first=$1
  shift
  dirout="${dirout}" optout="${optout}" ./tmpmultilib2 $@
  l=`echo ${first} | sed -e 's/=.*$//' -e 's/?/=/g'`
  r=`echo ${first} | sed -e 's/^.*=//' -e 's/?/=/g'`
  case " ${optout} " in
  *" ${l} "*)
    newopt=`echo " ${optout} " | sed -e "s/ ${l} / ${r} /" -e 's/^ //' -e 's/ $//'`
    dirout="${dirout}" optout="${newopt}" ./tmpmultilib2 $@
    ;;
  esac
fi
EOF
chmod +x tmpmultilib2

# We are ready to start output.
echo '#define MULTILIB_SELECT "\'

# Start with the current directory, which includes only negations.
optout=
for set in ${options}; do
  for opt in `echo ${set} | sed -e 's|/| |'g`; do
    optout="${optout} !${opt}"
  done
done
optout=`echo ${optout} | sed -e 's/^ //'`
if [ -n "${matchnegations}" ]; then
  optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
fi
echo ". ${optout};\\"

# Work over the list of combinations.  We have to translate each one
# to use the directory names rather than the option names, we have to
# include the information in matches, and we have to generate the
# correct list of options and negations.
for combo in ${combinations}; do
  # Use the directory names rather than the option names.
  if [ -n "${todirnames}" ]; then
    dirout=`echo ${combo} | sed ${todirnames}`
  else
    dirout=${combo}
  fi
  # Remove the leading and trailing slashes.
  dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/$||g'`

  # Look through the options.  We must output each option that is
  # present, and negate each option that is not present.  If an
  # element of a set is present, we need not negate the other elements
  # of the set.
  optout=
  for set in ${options}; do
    setopts=`echo ${set} | sed -e 's|/| |g'`
    found=
    for opt in ${setopts}; do
      case "${combo}" in
      *"/${opt}/"*)
	optout="${optout} ${opt}"
	found=yes
	;;
      esac
    done
    if [ "${found}" = "" ]; then
      for opt in ${setopts}; do
	optout="${optout} !${opt}"
      done
    fi
  done
  optout=`echo ${optout} | sed -e 's/^ //'`

  # Add any negations of matches.
  if [ -n "${matchnegations}" ]; then
    optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
  fi

  # Output the line with all appropriate matches.
  dirout="${dirout}" optout="${optout}" ./tmpmultilib2 ${matches}
done

rm -f tmpmultilib2

# That's it.
echo '"'

exit 0
Commit	Line	Data
08b28cd3 DE	1	#!/bin/sh
	2	# Generates multilib.h.
	3	# Copyright (C) 1994 Free Software Foundation, Inc.
	4
	5	#This file is part of GNU CC.
	6
	7	#GNU CC is free software; you can redistribute it and/or modify
	8	#it under the terms of the GNU General Public License as published by
	9	#the Free Software Foundation; either version 2, or (at your option)
	10	#any later version.
	11
	12	#GNU CC is distributed in the hope that it will be useful,
	13	#but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	#GNU General Public License for more details.
	16
	17	#You should have received a copy of the GNU General Public License
	18	#along with GNU CC; see the file COPYING. If not, write to
de18aff3 RK	19	#the Free Software Foundation, 59 Temple Place - Suite 330,
de18aff3 RK	20	#Boston, MA 02111-1307, USA.
08b28cd3 DE	21
	22	# This shell script produces a header file which the gcc driver
	23	# program uses to pick which library to use based on the machine
	24	# specific options that it is given.
	25
	26	# The first argument is a list of sets of options. The elements in
	27	# the list are separated by spaces. Within an element, the options
	28	# are separated by slashes. No leading dash is used on the options.
	29	# Each option in a set is mutually incompatible with all other options
	30	# in the set.
	31
	32	# The optional second argument is a list of subdirectory names. If
	33	# the second argument is non-empty, there must be as many elements in
	34	# the second argument as there are options in the first argument. The
	35	# elements in the second list are separated by spaces. If the second
	36	# argument is empty, the option names will be used as the directory
	37	# names.
	38
	39	# The optional third argument is a list of options which are
	40	# identical. The elements in the list are separated by spaces. Each
	41	# element must be of the form OPTION=OPTION. The first OPTION should
	42	# appear in the first argument, and the second should be a synonym for
75814ad4	43	# it. Question marks are replaced with equal signs in both options.
08b28cd3 DE	44
	45	# The output looks like
	46	# #define MULTILIB_MATCHES "\
	47	# SUBDIRECTORY OPTIONS;\
	48	# ...
	49	# "
	50	# The SUBDIRECTORY is the subdirectory to use. The OPTIONS are
	51	# multiple options separated by spaces. Each option may start with an
	52	# exclamation point. gcc will consider each line in turn. If none of
	53	# the options beginning with an exclamation point are present, and all
	54	# of the other options are present, that subdirectory will be used.
	55	# The order of the subdirectories is such that they can be created in
	56	# order; that is, a subdirectory is preceded by all its parents.
	57
	58	# Here is a example (this is simplified from the actual 680x0 case):
	59	# genmultilib "m68000/m68020 msoft-float" "m68000 m68020 msoft-float"
	60	# "m68000=mc68000"
	61	# This produces:
	62	# #define MULTILIB_MATCHES "\
	63	# m68000/msoft-float m68000 msoft-float;\
	64	# m68000/msoft-float mc68000 msoft-float;\
	65	# m68020/msoft-float m68020 msoft-float;\
	66	# msoft-float !m68000 !mc68000 !m68020 msoft-float;\
	67	# m68000 m68000 !msoft-float;\
	68	# m68000 mc60000 !msoft-float;\
	69	# m68020 m68020 !msoft-float;\
	70	# . !m68000 !mc68000 !m68020 !msoft-float;\
	71	# "
	72	# The effect is that `gcc -msoft-float' (for example) will append
	73	# msoft-float to the directory name when searching for libraries or
	74	# startup files, and `gcc -m68000 -msoft-float' (for example) will
	75	# append m68000/msoft-float.
	76
	77	# Copy the positional parameters into variables.
	78	options=$1
	79	dirnames=$2
	80	matches=$3
	81
	82	# What we want to do is select all combinations of the sets in
	83	# options. Each combination which includes a set of mutually
	84	# exclusive options must then be output multiple times, once for each
	85	# item in the set. Selecting combinations is a recursive process.
	86	# Since not all versions of sh support functions, we achieve recursion
	87	# by creating a temporary shell script which invokes itself.
	88	rm -f tmpmultilib
	89	cat >tmpmultilib <<\EOF
	90	#!/bin/sh
	91	# This recursive script basically outputs all combinations of its
	92	# input arguments, handling mutually exclusive sets of options by
	93	# repetition. When the script is called, ${initial} is the list of
	94	# options which should appear before all combinations this will
	95	# output. The output looks like a list of subdirectory names with
	96	# leading and trailing slashes.
	97	if [ "$#" != "0" ]; then
	98	first=$1
	99	shift
	100	for opt in `echo $first \| sed -e 's\|/\| \|'g`; do
	101	echo ${initial}${opt}/
	102	done
	103	./tmpmultilib $@
	104	for opt in `echo $first \| sed -e 's\|/\| \|'g`; do
	105	initial="${initial}${opt}/" ./tmpmultilib $@
	106	done
	107	fi
108	EOF
109	chmod +x tmpmultilib
110
111	combinations=`initial=/ ./tmpmultilib ${options}`
112
113	rm -f tmpmultilib
114
115	# Construct a sed pattern which will convert option names to directory
116	# names.
117	todirnames=
118	if [ -n "${dirnames}" ]; then
119	set x ${dirnames}
120	shift
121	for set in ${options}; do
122	for opt in `echo ${set} \| sed -e 's\|/\| \|'g`; do
123	if [ "$1" != "${opt}" ]; then
124	todirnames="${todirnames} -e s\|/${opt}/\|/${1}/\|g"
125	fi
126	shift
127	done
128	done
129	fi
130
131	# Construct a sed pattern which will add negations based on the
132	# matches. The semicolons are easier than getting the shell to accept
133	# quoted spaces when expanding a variable.
134	matchnegations=
135	for i in ${matches}; do
75814ad4 MM	136	l=`echo $i \| sed -e 's/=.*$//' -e 's/?/=/g'`
75814ad4 MM	137	r=`echo $i \| sed -e 's/^.*=//' -e 's/?/=/g'`
08b28cd3 DE	138	matchnegations="${matchnegations} -e s/;!${l};/;!${l};!${r};/"
	139	done
	140
	141	# We need another recursive shell script to correctly handle positive
	142	# matches. If we are invoked as
	143	# genmultilib "opt1 opt2" "" "opt1=nopt1 opt2=nopt2"
	144	# we must output
	145	# opt1/opt2 opt1 opt2
	146	# opt1/opt2 nopt1 opt2
	147	# opt1/opt2 opt1 nopt2
	148	# opt1/opt2 nopt1 nopt2
	149	# In other words, we must output all combinations of matches.
	150	rm -f tmpmultilib2
	151	cat >tmpmultilib2 <<\EOF
	152	#!/bin/sh
	153	# The positional parameters are a list of matches to consider.
	154	# ${dirout} is the directory name and ${optout} is the current list of
	155	# options.
	156	if [ "$#" = "0" ]; then
	157	echo "${dirout} ${optout};\\"
	158	else
	159	first=$1
	160	shift
	161	dirout="${dirout}" optout="${optout}" ./tmpmultilib2 $@
75814ad4 MM	162	l=`echo ${first} \| sed -e 's/=.*$//' -e 's/?/=/g'`
75814ad4 MM	163	r=`echo ${first} \| sed -e 's/^.*=//' -e 's/?/=/g'`
08b28cd3 DE	164	case " ${optout} " in
	165	" ${l} ")
	166	newopt=`echo " ${optout} " \| sed -e "s/ ${l} / ${r} /" -e 's/^ //' -e 's/ $//'`
	167	dirout="${dirout}" optout="${newopt}" ./tmpmultilib2 $@
	168	;;
	169	esac
	170	fi
	171	EOF
	172	chmod +x tmpmultilib2
	173
	174	# We are ready to start output.
	175	echo '#define MULTILIB_SELECT "\'
	176
	177	# Start with the current directory, which includes only negations.
	178	optout=
	179	for set in ${options}; do
	180	for opt in `echo ${set} \| sed -e 's\|/\| \|'g`; do
	181	optout="${optout} !${opt}"
	182	done
	183	done
	184	optout=`echo ${optout} \| sed -e 's/^ //'`
	185	if [ -n "${matchnegations}" ]; then
	186	optout=`echo ";${optout};" \| sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
	187	fi
	188	echo ". ${optout};\\"
	189
	190	# Work over the list of combinations. We have to translate each one
	191	# to use the directory names rather than the option names, we have to
	192	# include the information in matches, and we have to generate the
	193	# correct list of options and negations.
	194	for combo in ${combinations}; do
	195	# Use the directory names rather than the option names.
	196	if [ -n "${todirnames}" ]; then
	197	dirout=`echo ${combo} \| sed ${todirnames}`
	198	else
	199	dirout=${combo}
	200	fi
	201	# Remove the leading and trailing slashes.
	202	dirout=`echo ${dirout} \| sed -e 's\|^/\|\|' -e 's\|/$\|\|g'`
	203
	204	# Look through the options. We must output each option that is
	205	# present, and negate each option that is not present. If an
	206	# element of a set is present, we need not negate the other elements
	207	# of the set.
	208	optout=
	209	for set in ${options}; do
	210	setopts=`echo ${set} \| sed -e 's\|/\| \|g'`
	211	found=
	212	for opt in ${setopts}; do
	213	case "${combo}" in
	214	"/${opt}/")
	215	optout="${optout} ${opt}"
	216	found=yes
	217	;;
	218	esac
	219	done
	220	if [ "${found}" = "" ]; then
	221	for opt in ${setopts}; do
	222	optout="${optout} !${opt}"
	223	done
	224	fi
	225	done
	226	optout=`echo ${optout} \| sed -e 's/^ //'`
	227
228	# Add any negations of matches.
229	if [ -n "${matchnegations}" ]; then
230	optout=`echo ";${optout};" \| sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
231	fi
232
233	# Output the line with all appropriate matches.
234	dirout="${dirout}" optout="${optout}" ./tmpmultilib2 ${matches}
235	done
236
237	rm -f tmpmultilib2
238
239	# That's it.
240	echo '"'
241
242	exit 0