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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [gcc/] [genmultilib] - Blame information for rev 38

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1 38 julius
#!/bin/sh
2
# Generates multilib.h.
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#   Copyright (C) 1994, 1995, 1996, 1997, 1999, 2002, 2007
4
#   Free Software Foundation, Inc.
5
 
6
#This file is part of GCC.
7
 
8
#GCC is free software; you can redistribute it and/or modify it under
9
#the terms of the GNU General Public License as published by the Free
10
#Software Foundation; either version 3, or (at your option) any later
11
#version.
12
 
13
#GCC is distributed in the hope that it will be useful, but WITHOUT
14
#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15
#FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16
#for more details.
17
 
18
#You should have received a copy of the GNU General Public License
19
#along with GCC; see the file COPYING3.  If not see
20
#.
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 or pipes.  No leading dash is used on the
29
# options.
30
# Each option in a set separated by slashes is mutually incompatible
31
# with all other options
32
# in the set.
33
# Each option in a set separated by pipes will be used for the library
34
# compilation and any of the options in the set will be sufficient
35
# for it to be triggered.
36
 
37
# The optional second argument is a list of subdirectory names.  If
38
# the second argument is non-empty, there must be as many elements in
39
# the second argument as there are options in the first argument.  The
40
# elements in the second list are separated by spaces.  If the second
41
# argument is empty, the option names will be used as the directory
42
# names.
43
 
44
# The optional third argument is a list of options which are
45
# identical.  The elements in the list are separated by spaces.  Each
46
# element must be of the form OPTION=OPTION.  The first OPTION should
47
# appear in the first argument, and the second should be a synonym for
48
# it.  Question marks are replaced with equal signs in both options.
49
 
50
# The optional fourth argument is a list of multilib directory
51
# combinations that should not be built.
52
 
53
# The optional fifth argument is a list of options that should be
54
# used whenever building multilib libraries.
55
 
56
# The optional sixth argument is a list of exclusions used internally by
57
# the compiler similar to exceptions. The difference being that exclusions
58
# allow matching default options that genmultilib does not know about and
59
# is done at runtime as opposed to being sorted out at compile time.
60
# Each element in the list is a separate exclusion rule. Each rule is
61
# a list of options (sans preceding '-') separated by a '/'. The options
62
# on the rule are grouped as an AND operation, and all options much match
63
# for the rule to exclude a set. Options can be preceded with a '!' to
64
# match a logical NOT.
65
 
66
# The optional seventh argument is a list of OS subdirectory names.
67
# The format is either the same as of the second argument, or a set of
68
# mappings. When it is the same as the second argument, it describes
69
# the multilib directories using OS conventions, rather than GCC
70
# conventions.  When it is a set of mappings of the form gccdir=osdir,
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# the left side gives the GCC convention and the right gives the
72
# equivalent OS defined location.  If the osdir part begins with a !,
73
# the os directory names are used exclusively.  Use the mapping when
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# there is no one-to-one equivalence between GCC levels and the OS.
75
 
76
# The last option should be "yes" if multilibs are enabled.  If it is not
77
# "yes", all GCC multilib dir names will be ".".
78
 
79
# The output looks like
80
#   #define MULTILIB_MATCHES "\
81
#   SUBDIRECTORY OPTIONS;\
82
#   ...
83
#   "
84
# The SUBDIRECTORY is the subdirectory to use.  The OPTIONS are
85
# multiple options separated by spaces.  Each option may start with an
86
# exclamation point.  gcc will consider each line in turn.  If none of
87
# the options beginning with an exclamation point are present, and all
88
# of the other options are present, that subdirectory will be used.
89
# The order of the subdirectories is such that they can be created in
90
# order; that is, a subdirectory is preceded by all its parents.
91
 
92
# Here is an example (this is from the actual sparc64 case):
93
#   genmultilib 'm64/m32 mno-app-regs|mcmodel=medany' '64 32 alt'
94
#               'mcmodel?medany=mcmodel?medmid' 'm32/mno-app-regs* m32/mcmodel=*'
95
#               '' 'm32/!m64/mno-app-regs m32/!m64/mcmodel=medany'
96
#               '../lib64 ../lib32 alt' yes
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# This produces:
98
#   ". !m64 !m32 !mno-app-regs !mcmodel=medany;",
99
#   "64:../lib64 m64 !m32 !mno-app-regs !mcmodel=medany;",
100
#   "32:../lib32 !m64 m32 !mno-app-regs !mcmodel=medany;",
101
#   "alt !m64 !m32 mno-app-regs mcmodel=medany;",
102
#   "alt !m64 !m32 mno-app-regs !mcmodel=medany;",
103
#   "alt !m64 !m32 !mno-app-regs mcmodel=medany;",
104
#   "64/alt:../lib64/alt m64 !m32 mno-app-regs mcmodel=medany;",
105
#   "64/alt:../lib64/alt m64 !m32 mno-app-regs !mcmodel=medany;",
106
#   "64/alt:../lib64/alt m64 !m32 !mno-app-regs mcmodel=medany;",
107
#
108
# The effect is that `gcc -mno-app-regs' (for example) will append "alt"
109
# to the directory name when searching for libraries or startup files and
110
# `gcc -m32 -mcmodel=medany' (for example) will append "32/alt". Also note
111
# that exclusion above is moot, unless the compiler had a default of -m32,
112
# which would mean that all of the "alt" directories (not the 64/alt ones)
113
# would be ignored (not generated, nor used) since the exclusion also
114
# matches the multilib_default args.
115
 
116
# Copy the positional parameters into variables.
117
options=$1
118
dirnames=$2
119
matches=$3
120
exceptions=$4
121
extra=$5
122
exclusions=$6
123
osdirnames=$7
124
enable_multilib=$8
125
 
126
echo "static const char *const multilib_raw[] = {"
127
 
128
mkdir tmpmultilib.$$ || exit 1
129
# Use cd ./foo to avoid CDPATH output.
130
cd ./tmpmultilib.$$ || exit 1
131
 
132
# What we want to do is select all combinations of the sets in
133
# options.  Each combination which includes a set of mutually
134
# exclusive options must then be output multiple times, once for each
135
# item in the set.  Selecting combinations is a recursive process.
136
# Since not all versions of sh support functions, we achieve recursion
137
# by creating a temporary shell script which invokes itself.
138
rm -f tmpmultilib
139
cat >tmpmultilib <<\EOF
140
#!/bin/sh
141
# This recursive script basically outputs all combinations of its
142
# input arguments, handling mutually exclusive sets of options by
143
# repetition.  When the script is called, ${initial} is the list of
144
# options which should appear before all combinations this will
145
# output.  The output looks like a list of subdirectory names with
146
# leading and trailing slashes.
147
if [ "$#" != "0" ]; then
148
  first=$1
149
  shift
150
  case "$first" in
151
  *\|*)
152
    all=${initial}`echo $first | sed -e 's_|_/_'g`
153
    first=`echo $first | sed -e 's_|_ _'g`
154
    echo ${all}/
155
    initial="${initial}${all}/" ./tmpmultilib $@
156
    ./tmpmultilib $first $@ | grep -v "^${all}"
157
    ;;
158
  *)
159
    for opt in `echo $first | sed -e 's|/| |'g`; do
160
      echo ${initial}${opt}/
161
    done
162
    ./tmpmultilib $@
163
    for opt in `echo $first | sed -e 's|/| |'g`; do
164
      initial="${initial}${opt}/" ./tmpmultilib $@
165
    done
166
  esac
167
fi
168
EOF
169
chmod +x tmpmultilib
170
 
171
combinations=`initial=/ ./tmpmultilib ${options}`
172
 
173
# If there exceptions, weed them out now
174
if [ -n "${exceptions}" ]; then
175
  cat >tmpmultilib2 <<\EOF
176
#!/bin/sh
177
# This recursive script weeds out any combination of multilib
178
# switches that should not be generated.  The output looks like
179
# a list of subdirectory names with leading and trailing slashes.
180
 
181
  for opt in $@; do
182
    case "$opt" in
183
EOF
184
 
185
  for except in ${exceptions}; do
186
    echo "      /${except}/) : ;;" >> tmpmultilib2
187
  done
188
 
189
cat >>tmpmultilib2 <<\EOF
190
      *) echo ${opt};;
191
    esac
192
  done
193
EOF
194
  chmod +x tmpmultilib2
195
  combinations=`./tmpmultilib2 ${combinations}`
196
fi
197
 
198
# Construct a sed pattern which will convert option names to directory
199
# names.
200
todirnames=
201
if [ -n "${dirnames}" ]; then
202
  set x ${dirnames}
203
  shift
204
  for set in ${options}; do
205
    for opts in `echo ${set} | sed -e 's|/| |'g`; do
206
      patt="/"
207
      for opt in `echo ${opts} | sed -e 's_|_ _'g`; do
208
        if [ "$1" != "${opt}" ]; then
209
          todirnames="${todirnames} -e s|/${opt}/|/${1}/|g"
210
          patt="${patt}${1}/"
211
          if [ "${patt}" != "/${1}/" ]; then
212
            todirnames="${todirnames} -e s|${patt}|/${1}/|g"
213
          fi
214
        fi
215
      done
216
      shift
217
    done
218
  done
219
fi
220
 
221
# Construct a sed pattern which will convert option names to OS directory
222
# names.
223
toosdirnames=
224
defaultosdirname=
225
if [ -n "${osdirnames}" ]; then
226
  set x ${osdirnames}
227
  shift
228
  while [ $# != 0 ] ; do
229
    case "$1" in
230
      .=*)
231
        defaultosdirname=`echo $1 | sed 's|^.=|:|'`
232
        shift
233
        ;;
234
      *=*)
235
        patt=`echo $1 | sed -e 's|=|/$=/|'`
236
        toosdirnames="${toosdirnames} -e s=^/${patt}/="
237
        shift
238
        ;;
239
      *)
240
        break
241
        ;;
242
    esac
243
  done
244
 
245
  if [ $# != 0 ]; then
246
    for set in ${options}; do
247
      for opts in `echo ${set} | sed -e 's|/| |'g`; do
248
        patt="/"
249
        for opt in `echo ${opts} | sed -e 's_|_ _'g`; do
250
          if [ "$1" != "${opt}" ]; then
251
            toosdirnames="${toosdirnames} -e s|/${opt}/|/${1}/|g"
252
            patt="${patt}${1}/"
253
            if [ "${patt}" != "/${1}/" ]; then
254
              toosdirnames="${toosdirnames} -e s|${patt}|/${1}/|g"
255
            fi
256
          fi
257
        done
258
        shift
259
      done
260
    done
261
  fi
262
fi
263
 
264
# We need another recursive shell script to correctly handle positive
265
# matches.  If we are invoked as
266
#   genmultilib "opt1 opt2" "" "opt1=nopt1 opt2=nopt2"
267
# we must output
268
#   opt1/opt2 opt1 opt2
269
#   opt1/opt2 nopt1 opt2
270
#   opt1/opt2 opt1 nopt2
271
#   opt1/opt2 nopt1 nopt2
272
# In other words, we must output all combinations of matches.
273
rm -f tmpmultilib2
274
cat >tmpmultilib2 <<\EOF
275
#!/bin/sh
276
# The positional parameters are a list of matches to consider.
277
# ${dirout} is the directory name and ${optout} is the current list of
278
# options.
279
if [ "$#" = "0" ]; then
280
  echo "\"${dirout} ${optout};\","
281
else
282
  first=$1
283
  shift
284
  dirout="${dirout}" optout="${optout}" ./tmpmultilib2 $@
285
  l=`echo ${first} | sed -e 's/=.*$//' -e 's/?/=/g'`
286
  r=`echo ${first} | sed -e 's/^.*=//' -e 's/?/=/g'`
287
  if expr " ${optout} " : ".* ${l} .*" > /dev/null; then
288
    newopt=`echo " ${optout} " | sed -e "s/ ${l} / ${r} /" -e 's/^ //' -e 's/ $//'`
289
    dirout="${dirout}" optout="${newopt}" ./tmpmultilib2 $@
290
  fi
291
fi
292
EOF
293
chmod +x tmpmultilib2
294
 
295
# Start with the current directory, which includes only negations.
296
optout=
297
for set in ${options}; do
298
  for opt in `echo ${set} | sed -e 's_[/|]_ _g'`; do
299
    optout="${optout} !${opt}"
300
  done
301
done
302
optout=`echo ${optout} | sed -e 's/^ //'`
303
echo "\".${defaultosdirname} ${optout};\","
304
 
305
# Work over the list of combinations.  We have to translate each one
306
# to use the directory names rather than the option names, we have to
307
# include the information in matches, and we have to generate the
308
# correct list of options and negations.
309
for combo in ${combinations}; do
310
  # Use the directory names rather than the option names.
311
  if [ -n "${todirnames}" ]; then
312
    dirout=`echo ${combo} | sed ${todirnames}`
313
  else
314
    dirout=`echo ${combo} | sed -e 's/=/-/g'`
315
  fi
316
  # Remove the leading and trailing slashes.
317
  dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/$||g'`
318
 
319
  # Use the OS directory names rather than the option names.
320
  if [ -n "${toosdirnames}" ]; then
321
    osdirout=`echo ${combo} | sed ${toosdirnames}`
322
    # Remove the leading and trailing slashes.
323
    osdirout=`echo ${osdirout} | sed -e 's|^/||' -e 's|/$||g'`
324
    if [ "x${enable_multilib}" != xyes ]; then
325
      dirout=".:${osdirout}"
326
      disable_multilib=yes
327
    else
328
      case "${osdirout}" in
329
        !*)
330
          dirout=`echo ${osdirout} | sed 's/^!//'`
331
          ;;
332
        *)
333
          dirout="${dirout}:${osdirout}"
334
          ;;
335
      esac
336
    fi
337
  else
338
    if [ "x${enable_multilib}" != xyes ]; then
339
      # genmultilib with --disable-multilib should be
340
      # called with '' '' '' '' '' '' '' no
341
      # if MULTILIB_OSDIRNAMES is empty.
342
      exit 1
343
    fi
344
  fi
345
 
346
  # Look through the options.  We must output each option that is
347
  # present, and negate each option that is not present.
348
  optout=
349
  for set in ${options}; do
350
    setopts=`echo ${set} | sed -e 's_[/|]_ _g'`
351
    for opt in ${setopts}; do
352
      if expr "${combo} " : ".*/${opt}/.*" > /dev/null; then
353
        optout="${optout} ${opt}"
354
      else
355
        optout="${optout} !${opt}"
356
      fi
357
    done
358
  done
359
  optout=`echo ${optout} | sed -e 's/^ //'`
360
 
361
  # Output the line with all appropriate matches.
362
  dirout="${dirout}" optout="${optout}" ./tmpmultilib2
363
done
364
 
365
# Terminate the list of string.
366
echo "NULL"
367
echo "};"
368
 
369
# Output all of the matches now as option and that is the same as that, with
370
# a semicolon trailer.  Include all of the normal options as well.
371
# Note, the format of the matches is reversed compared
372
# to what we want, so switch them around.
373
echo ""
374
echo "static const char *const multilib_matches_raw[] = {"
375
for match in ${matches}; do
376
  l=`echo ${match} | sed -e 's/=.*$//' -e 's/?/=/g'`
377
  r=`echo ${match} | sed -e 's/^.*=//' -e 's/?/=/g'`
378
  echo "\"${r} ${l};\","
379
done
380
for set in ${options}; do
381
  for opt in `echo ${set} | sed -e 's_[/|]_ _'g`; do
382
    echo "\"${opt} ${opt};\","
383
  done
384
done
385
echo "NULL"
386
echo "};"
387
 
388
# Output the default options now
389
echo ""
390
echo "static const char *multilib_extra = \"${extra}\";"
391
 
392
# Output the exclusion rules now
393
echo ""
394
echo "static const char *const multilib_exclusions_raw[] = {"
395
for rule in ${exclusions}; do
396
  s=`echo ${rule} | sed -e 's,/, ,g'`
397
  echo "\"${s};\","
398
done
399
echo "NULL"
400
echo "};"
401
 
402
# Output the options now
403
moptions=`echo ${options} | sed -e 's,[         ][      ]*, ,g'`
404
echo ""
405
echo "static const char *multilib_options = \"${moptions}\";"
406
 
407
# Finally output the disable flag if specified
408
if [ "x${disable_multilib}" = xyes ]; then
409
  echo ""
410
  echo "#define DISABLE_MULTILIB  1"
411
fi
412
 
413
cd ..
414
rm -r tmpmultilib.$$
415
 
416
exit 0

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