OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [cp/] [g++spec.c] - Blame information for rev 294

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 283 jeremybenn
/* Specific flags and argument handling of the C++ front end.
2
   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3
   2007, 2008, 2009 Free Software Foundation, Inc.
4
 
5
This file is part of GCC.
6
 
7
GCC 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 3, or (at your option)
10
any later version.
11
 
12
GCC 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 GCC; see the file COPYING3.  If not see
19
<http://www.gnu.org/licenses/>.  */
20
 
21
#include "config.h"
22
#include "system.h"
23
#include "coretypes.h"
24
#include "tm.h"
25
#include "gcc.h"
26
 
27
/* This bit is set if we saw a `-xfoo' language specification.  */
28
#define LANGSPEC        (1<<1)
29
/* This bit is set if they did `-lm' or `-lmath'.  */
30
#define MATHLIB         (1<<2)
31
/* This bit is set if they did `-lc'.  */
32
#define WITHLIBC        (1<<3)
33
/* Skip this option.  */
34
#define SKIPOPT         (1<<4)
35
 
36
#ifndef MATH_LIBRARY
37
#define MATH_LIBRARY "-lm"
38
#endif
39
#ifndef MATH_LIBRARY_PROFILE
40
#define MATH_LIBRARY_PROFILE MATH_LIBRARY
41
#endif
42
 
43
#ifndef LIBSTDCXX
44
#define LIBSTDCXX "-lstdc++"
45
#endif
46
#ifndef LIBSTDCXX_PROFILE
47
#define LIBSTDCXX_PROFILE LIBSTDCXX
48
#endif
49
#ifndef LIBSTDCXX_STATIC
50
#define LIBSTDCXX_STATIC NULL
51
#endif
52
 
53
void
54
lang_specific_driver (int *in_argc, const char *const **in_argv,
55
                      int *in_added_libraries)
56
{
57
  int i, j;
58
 
59
  /* If nonzero, the user gave us the `-p' or `-pg' flag.  */
60
  int saw_profile_flag = 0;
61
 
62
  /* What do with libstdc++:
63
     -1 means we should not link in libstdc++
64
 
65
     1  means libstdc++ is needed and should be linked in.
66
     2  means libstdc++ is needed and should be linked statically.  */
67
  int library = 0;
68
 
69
  /* The number of arguments being added to what's in argv, other than
70
     libraries.  We use this to track the number of times we've inserted
71
     -xc++/-xnone.  */
72
  int added = 0;
73
 
74
  /* Used to track options that take arguments, so we don't go wrapping
75
     those with -xc++/-xnone.  */
76
  const char *quote = NULL;
77
 
78
  /* The new argument list will be contained in this.  */
79
  const char **arglist;
80
 
81
  /* Nonzero if we saw a `-xfoo' language specification on the
82
     command line.  Used to avoid adding our own -xc++ if the user
83
     already gave a language for the file.  */
84
  int saw_speclang = 0;
85
 
86
  /* "-lm" or "-lmath" if it appears on the command line.  */
87
  const char *saw_math = 0;
88
 
89
  /* "-lc" if it appears on the command line.  */
90
  const char *saw_libc = 0;
91
 
92
  /* An array used to flag each argument that needs a bit set for
93
     LANGSPEC, MATHLIB, or WITHLIBC.  */
94
  int *args;
95
 
96
  /* By default, we throw on the math library if we have one.  */
97
  int need_math = (MATH_LIBRARY[0] != '\0');
98
 
99
  /* True if we saw -static.  */
100
  int static_link = 0;
101
 
102
  /* True if we should add -shared-libgcc to the command-line.  */
103
  int shared_libgcc = 1;
104
 
105
  /* The total number of arguments with the new stuff.  */
106
  int argc;
107
 
108
  /* The argument list.  */
109
  const char *const *argv;
110
 
111
  /* The number of libraries added in.  */
112
  int added_libraries;
113
 
114
  /* The total number of arguments with the new stuff.  */
115
  int num_args = 1;
116
 
117
  argc = *in_argc;
118
  argv = *in_argv;
119
  added_libraries = *in_added_libraries;
120
 
121
  args = XCNEWVEC (int, argc);
122
 
123
  for (i = 1; i < argc; i++)
124
    {
125
      /* If the previous option took an argument, we swallow it here.  */
126
      if (quote)
127
        {
128
          quote = NULL;
129
          continue;
130
        }
131
 
132
      /* We don't do this anymore, since we don't get them with minus
133
         signs on them.  */
134
      if (argv[i][0] == '\0' || argv[i][1] == '\0')
135
        continue;
136
 
137
      if (argv[i][0] == '-')
138
        {
139
          if (strcmp (argv[i], "-nostdlib") == 0
140
              || strcmp (argv[i], "-nodefaultlibs") == 0)
141
            {
142
              library = -1;
143
            }
144
          else if (strcmp (argv[i], MATH_LIBRARY) == 0)
145
            {
146
              args[i] |= MATHLIB;
147
              need_math = 0;
148
            }
149
          else if (strcmp (argv[i], "-lc") == 0)
150
            args[i] |= WITHLIBC;
151
          else if (strcmp (argv[i], "-pg") == 0 || strcmp (argv[i], "-p") == 0)
152
            saw_profile_flag++;
153
          else if (strncmp (argv[i], "-x", 2) == 0)
154
            {
155
              const char * arg;
156
              if (argv[i][2] != '\0')
157
                arg = argv[i]+2;
158
              else if ((argv[i+1]) != NULL)
159
                /* We need to swallow arg on next loop.  */
160
                quote = arg = argv[i+1];
161
              else  /* Error condition, message will be printed later.  */
162
                arg = "";
163
              if (library == 0
164
                  && (strcmp (arg, "c++") == 0
165
                      || strcmp (arg, "c++-cpp-output") == 0
166
                      || strcmp (arg, "objective-c++") == 0
167
                      || strcmp (arg, "objective-c++-cpp-output") == 0))
168
                library = 1;
169
 
170
              saw_speclang = 1;
171
            }
172
          else if (strcmp (argv[i], "-ObjC++") == 0)
173
            {
174
              if (library == 0)
175
                library = 1;
176
              saw_speclang = 1;
177
            }
178
          /* Arguments that go directly to the linker might be .o files,
179
             or something, and so might cause libstdc++ to be needed.  */
180
          else if (strcmp (argv[i], "-Xlinker") == 0)
181
            {
182
              quote = argv[i];
183
              if (library == 0)
184
                library = 1;
185
            }
186
          else if (strncmp (argv[i], "-Wl,", 4) == 0)
187
            library = (library == 0) ? 1 : library;
188
          /* Unrecognized libraries (e.g. -lfoo) may require libstdc++.  */
189
          else if (strncmp (argv[i], "-l", 2) == 0)
190
            library = (library == 0) ? 1 : library;
191
          else if (((argv[i][2] == '\0'
192
                     && strchr ("bBVDUoeTuIYmLiA", argv[i][1]) != NULL)
193
                    || strcmp (argv[i], "-Tdata") == 0))
194
            quote = argv[i];
195
          else if ((argv[i][2] == '\0'
196
                    && strchr ("cSEM", argv[i][1]) != NULL)
197
                   || strcmp (argv[i], "-MM") == 0
198
                   || strcmp (argv[i], "-fsyntax-only") == 0)
199
            {
200
              /* Don't specify libraries if we won't link, since that would
201
                 cause a warning.  */
202
              library = -1;
203
            }
204
          else if (strcmp (argv[i], "-static") == 0)
205
            static_link = 1;
206
          else if (strcmp (argv[i], "-static-libgcc") == 0)
207
            shared_libgcc = 0;
208
          else if (strcmp (argv[i], "-static-libstdc++") == 0)
209
            {
210
              library = library >= 0 ? 2 : library;
211
              args[i] |= SKIPOPT;
212
            }
213
          else if (DEFAULT_WORD_SWITCH_TAKES_ARG (&argv[i][1]))
214
            i++;
215
          else
216
            /* Pass other options through.  */
217
            continue;
218
        }
219
      else
220
        {
221
          int len;
222
 
223
          if (saw_speclang)
224
            {
225
              saw_speclang = 0;
226
              continue;
227
            }
228
 
229
          /* If the filename ends in .[chi], put options around it.
230
             But not if a specified -x option is currently active.  */
231
          len = strlen (argv[i]);
232
          if (len > 2
233
              && (argv[i][len - 1] == 'c'
234
                  || argv[i][len - 1] == 'i'
235
                  || argv[i][len - 1] == 'h')
236
              && argv[i][len - 2] == '.')
237
            {
238
              args[i] |= LANGSPEC;
239
              added += 2;
240
            }
241
 
242
          /* If we don't know that this is a header file, we might
243
             need to be linking in the libraries.  */
244
          if (library == 0)
245
            {
246
              if ((len <= 2 || strcmp (argv[i] + (len - 2), ".H") != 0)
247
                  && (len <= 2 || strcmp (argv[i] + (len - 2), ".h") != 0)
248
                  && (len <= 4 || strcmp (argv[i] + (len - 4), ".hpp") != 0)
249
                  && (len <= 3 || strcmp (argv[i] + (len - 3), ".hp") != 0)
250
                  && (len <= 4 || strcmp (argv[i] + (len - 4), ".hxx") != 0)
251
                  && (len <= 4 || strcmp (argv[i] + (len - 4), ".h++") != 0)
252
                  && (len <= 4 || strcmp (argv[i] + (len - 4), ".HPP") != 0)
253
                  && (len <= 4 || strcmp (argv[i] + (len - 4), ".tcc") != 0)
254
                  && (len <= 3 || strcmp (argv[i] + (len - 3), ".hh") != 0))
255
                library = 1;
256
            }
257
        }
258
    }
259
 
260
  if (quote)
261
    fatal ("argument to '%s' missing\n", quote);
262
 
263
  /* There's no point adding -shared-libgcc if we don't have a shared
264
     libgcc.  */
265
#ifndef ENABLE_SHARED_LIBGCC
266
  shared_libgcc = 0;
267
#endif
268
 
269
  /* Make sure to have room for the trailing NULL argument.
270
     Add one for shared_libgcc or extra static library.  */
271
  num_args = argc + added + need_math + (library > 0) * 4 + 2;
272
  arglist = XNEWVEC (const char *, num_args);
273
 
274
  i = 0;
275
  j = 0;
276
 
277
  /* Copy the 0th argument, i.e., the name of the program itself.  */
278
  arglist[i++] = argv[j++];
279
 
280
  /* NOTE: We start at 1 now, not 0.  */
281
  while (i < argc)
282
    {
283
      arglist[j] = argv[i];
284
 
285
      /* Make sure -lstdc++ is before the math library, since libstdc++
286
         itself uses those math routines.  */
287
      if (!saw_math && (args[i] & MATHLIB) && library > 0)
288
        {
289
          --j;
290
          saw_math = argv[i];
291
        }
292
 
293
      if (!saw_libc && (args[i] & WITHLIBC) && library > 0)
294
        {
295
          --j;
296
          saw_libc = argv[i];
297
        }
298
 
299
      /* Wrap foo.[chi] files in a language specification to
300
         force the gcc compiler driver to run cc1plus on them.  */
301
      if (args[i] & LANGSPEC)
302
        {
303
          int len = strlen (argv[i]);
304
          switch (argv[i][len - 1])
305
            {
306
            case 'c':
307
              arglist[j++] = "-xc++";
308
              break;
309
            case 'i':
310
              arglist[j++] = "-xc++-cpp-output";
311
              break;
312
            case 'h':
313
              arglist[j++] = "-xc++-header";
314
              break;
315
            default:
316
              gcc_unreachable ();
317
            }
318
          arglist[j++] = argv[i];
319
          arglist[j] = "-xnone";
320
        }
321
 
322
      if ((args[i] & SKIPOPT) != 0)
323
        --j;
324
 
325
      i++;
326
      j++;
327
    }
328
 
329
  /* Add `-lstdc++' if we haven't already done so.  */
330
  if (library > 0)
331
    {
332
#ifdef HAVE_LD_STATIC_DYNAMIC
333
      if (library > 1 && !static_link)
334
        {
335
          arglist[j] = "-Wl,-Bstatic";
336
          j++;
337
        }
338
#endif
339
      arglist[j] = saw_profile_flag ? LIBSTDCXX_PROFILE : LIBSTDCXX;
340
      if (arglist[j][0] != '-' || arglist[j][1] == 'l')
341
        added_libraries++;
342
      j++;
343
      /* Add target-dependent static library, if necessary.  */
344
      if ((static_link || library > 1) && LIBSTDCXX_STATIC != NULL)
345
        {
346
          arglist[j] = LIBSTDCXX_STATIC;
347
          if (arglist[j][0] != '-' || arglist[j][1] == 'l')
348
            added_libraries++;
349
          j++;
350
        }
351
#ifdef HAVE_LD_STATIC_DYNAMIC
352
      if (library > 1 && !static_link)
353
        {
354
          arglist[j] = "-Wl,-Bdynamic";
355
          j++;
356
        }
357
#endif
358
    }
359
  if (saw_math)
360
    arglist[j++] = saw_math;
361
  else if (library > 0 && need_math)
362
    {
363
      arglist[j] = saw_profile_flag ? MATH_LIBRARY_PROFILE : MATH_LIBRARY;
364
      if (arglist[j][0] != '-' || arglist[j][1] == 'l')
365
        added_libraries++;
366
      j++;
367
    }
368
  if (saw_libc)
369
    arglist[j++] = saw_libc;
370
  if (shared_libgcc && !static_link)
371
    arglist[j++] = "-shared-libgcc";
372
 
373
  arglist[j] = NULL;
374
 
375
  *in_argc = j;
376
  *in_argv = arglist;
377
  *in_added_libraries = added_libraries;
378
}
379
 
380
/* Called before linking.  Returns 0 on success and -1 on failure.  */
381
int lang_specific_pre_link (void)  /* Not used for C++.  */
382
{
383
  return 0;
384
}
385
 
386
/* Number of extra output files that lang_specific_pre_link may generate.  */
387
int lang_specific_extra_outfiles = 0;  /* Not used for C++.  */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.