/* Specific flags and argument handling of the C preprocessor.
- Copyright (C) 1999 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2007, 2010, 2011 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-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.
+GCC 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 3, 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.
+GCC 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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "gcc.h"
+#include "opts.h"
/* The `cpp' executable installed in $(bindir) and $(cpp_install_dir)
is a customized version of the gcc driver. It forces -E; -S and -c
are errors. It defaults to -x c for files with unrecognized
extensions, unless -x options appear in argv, in which case we
assume the user knows what they're doing. If no explicit input is
- mentioned, it will read stdin. */
+ mentioned, it will read stdin. */
-/* Snarfed from gcc.c: */
-
-/* This defines which switch letters take arguments. */
-
-#define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
- ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
- || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
- || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
- || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
- || (CHAR) == 'B' || (CHAR) == 'b')
-
-#ifndef SWITCH_TAKES_ARG
-#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
-#endif
-
-/* This defines which multi-letter switches take arguments. */
-
-#define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
- (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
- || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
- || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
- || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
- || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
- || !strcmp (STR, "isystem") || !strcmp (STR, "specs"))
-
-#ifndef WORD_SWITCH_TAKES_ARG
-#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
-#endif
-
-/* Suffixes for known sorts of input files. We let gcc.c worry about
- which are appropriate preprocessor input. */
+/* Suffixes for known sorts of input files. Note that we do not list
+ files which are normally considered to have been preprocessed already,
+ since the user's expectation is that `cpp' always preprocesses. */
static const char *const known_suffixes[] =
{
- ".c", ".C", ".s", ".S", ".m",
+ ".c", ".C", ".S", ".m",
".cc", ".cxx", ".cpp", ".cp", ".c++",
- ".i", ".ii", ".mi", ".o", ".a",
+ ".sx",
NULL
};
-/* Filter argc and argv before processing by the gcc driver proper. */
+/* Filter the command line before processing by the gcc driver proper. */
void
-lang_specific_driver (errfn, in_argc, in_argv, in_added_libraries)
- void (*errfn) PVPROTO((const char *, ...));
- int *in_argc;
- char ***in_argv;
- int *in_added_libraries ATTRIBUTE_UNUSED;
+lang_specific_driver (struct cl_decoded_option **in_decoded_options,
+ unsigned int *in_decoded_options_count,
+ int *in_added_libraries ATTRIBUTE_UNUSED)
{
- int argc = *in_argc;
- char **argv = *in_argv;
-
+ struct cl_decoded_option *decoded_options = *in_decoded_options;
+ unsigned int argc = *in_decoded_options_count;
+
/* Do we need to read stdin? */
- int read_stdin;
+ int read_stdin = 1;
/* Do we need to insert -E? */
- int need_E;
+ int need_E = 1;
+
+ /* Have we seen an input file? */
+ int seen_input = 0;
- /* Do we need to fixup files with unrecognized suffixes? */
- int need_fixups;
+ /* Positions to insert -xc, -xassembler-with-cpp, and -o, if necessary.
+ 0 means unnecessary. */
+ unsigned int lang_c_here = 0;
+ unsigned int lang_S_here = 0;
+ unsigned int o_here = 0;
- /* Table of input files with unrecognized suffixes. */
- char *urs_tab;
- int urs_count;
- int urs_block;
+ /* Do we need to fix up an input file with an unrecognized suffix? */
+ int need_fixups = 1;
- int i, j, quote;
- char **new_argv;
- int new_argc;
+ unsigned int i, j;
+ struct cl_decoded_option *new_decoded_options;
+ unsigned int new_argc;
+ extern int is_cpp_driver;
+
+ is_cpp_driver = 1;
/* First pass. If we see an -S or -c, barf. If we see an input file,
- turn off read_stdin, and if it has an unrecognizable suffix, mark
- it for fixup. */
- urs_tab = xmalloc (argc);
- memset (urs_tab, 0, argc);
- urs_count = 0;
- urs_block = 0;
- quote = 0;
- read_stdin = 1;
- need_E = 1;
- need_fixups = 1;
+ turn off read_stdin. If we see a second input file, it is actually
+ the output file. If we see a third input file, barf. */
for (i = 1; i < argc; i++)
{
- if (quote == 1)
+ switch (decoded_options[i].opt_index)
{
- quote = 0;
- continue;
- }
-
- if (argv[i][0] == '-')
- {
- if (argv[i][1] == '\0')
- read_stdin = 0;
- else if (argv[i][2] == '\0')
- {
- if (argv[i][1] == 'E')
- need_E = 0;
- else if (argv[i][1] == 'S' || argv[i][1] == 'c')
- {
- (*errfn) ("`%s' is not a legal option to the preprocessor",
- argv[i]);
- goto done;
- }
- else if (argv[i][1] == 'x')
- {
- need_fixups = 0;
- quote = 1;
- }
- else if (SWITCH_TAKES_ARG (argv[i][1]))
- quote = 1;
- }
- else if (argv[i][1] == 'x')
- need_fixups = 0;
- else if (WORD_SWITCH_TAKES_ARG (&argv[i][1]))
- quote = 1;
- }
- else /* not an option */
- {
- int l = strlen (argv[i]);
- int known = 0;
- const char *const *suff;
-
- read_stdin = 0;
- for (suff = known_suffixes; *suff; suff++)
- if (!strcmp (*suff, &argv[i][l - strlen(*suff)]))
+ case OPT_E:
+ need_E = 0;
+ break;
+
+ case OPT_S:
+ case OPT_c:
+ fatal_error ("%qs is not a valid option to the preprocessor",
+ decoded_options[i].orig_option_with_args_text);
+ return;
+
+ case OPT_x:
+ need_fixups = 0;
+ break;
+
+ case OPT_SPECIAL_input_file:
+ {
+ const char *file = decoded_options[i].arg;
+
+ if (strcmp (file, "-") == 0)
+ read_stdin = 0;
+ else
{
- known = 1;
- break;
+ seen_input++;
+ if (seen_input == 3)
+ {
+ fatal_error ("too many input files");
+ return;
+ }
+ else if (seen_input == 2)
+ {
+ o_here = i;
+ }
+ else
+ {
+ read_stdin = 0;
+ if (need_fixups)
+ {
+ int l = strlen (file);
+ int known = 0;
+ const char *const *suff;
+
+ for (suff = known_suffixes; *suff; suff++)
+ if (!strcmp (*suff, &file[l - strlen(*suff)]))
+ {
+ known = 1;
+ break;
+ }
+
+ if (! known)
+ {
+ /* .s files are a special case; we have to
+ treat them like .S files so
+ -D__ASSEMBLER__ will be in effect. */
+ if (!strcmp (".s", &file[l - 2]))
+ lang_S_here = i;
+ else
+ lang_c_here = i;
+ }
+ }
+ }
}
-
- if (known)
- {
- if (urs_block)
- {
- urs_block = 0;
- urs_tab[i] = 2;
- urs_count++;
- }
- }
- else
- {
- if (!urs_block)
- {
- urs_block = 1;
- urs_tab[i] = 1;
- urs_count++;
- }
- }
+ }
+ break;
}
}
- /* If we were given an -E option and an input file, and no input
- files have unrecognized suffixes, we can bail early. */
- if (!need_E && !read_stdin && (!need_fixups || urs_count == 0))
- goto done;
+ /* If we don't need to edit the command line, we can bail early. */
+
+ new_argc = argc + need_E + read_stdin + !!lang_c_here + !!lang_S_here;
+
+ if (new_argc == argc && !o_here)
+ return;
- new_argc = argc + need_E + read_stdin + (need_fixups ? urs_count : 0);
- new_argv = xmalloc (new_argc * sizeof(char *));
+ new_decoded_options = XNEWVEC (struct cl_decoded_option, new_argc);
+
+ new_decoded_options[0] = decoded_options[0];
+ j = 1;
- new_argv[0] = argv[0];
if (need_E)
- {
- new_argv[1] = "-E";
- j = 2;
- }
- else
- j = 1;
+ generate_option (OPT_E, NULL, 1, CL_DRIVER, &new_decoded_options[j++]);
- if (need_fixups)
- for (i = 1; i < argc; i++, j++)
- {
- if (urs_tab[i])
- new_argv[j++] = (urs_tab[i] == 1) ? "-xc" : "-xnone";
+ for (i = 1; i < argc; i++, j++)
+ {
+ if (i == lang_c_here)
+ generate_option (OPT_x, "c", 1, CL_DRIVER, &new_decoded_options[j++]);
+ else if (i == lang_S_here)
+ generate_option (OPT_x, "assembler-with-cpp", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ else if (i == o_here)
+ {
+ generate_option (OPT_o, decoded_options[i].arg, 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ continue;
+ }
- new_argv[j] = argv[i];
- }
- else
- memcpy (&new_argv[j], &argv[1], (argc - 1)*sizeof (char *));
+ new_decoded_options[j] = decoded_options[i];
+ }
if (read_stdin)
- new_argv[j] = "-";
-
- *in_argc = new_argc;
- *in_argv = new_argv;
+ generate_option_input_file ("-", &new_decoded_options[j++]);
-done:
- free (urs_tab);
+ *in_decoded_options_count = new_argc;
+ *in_decoded_options = new_decoded_options;
}
-/* Called before linking. Returns 0 on success and -1 on failure. */
-int lang_specific_pre_link ()
+/* Called before linking. Returns 0 on success and -1 on failure. */
+int lang_specific_pre_link (void)
{
- return 0; /* Not used for cpp. */
+ return 0; /* Not used for cpp. */
}
-/* Number of extra output files that lang_specific_pre_link may generate. */
-int lang_specific_extra_outfiles = 0; /* Not used for cpp. */
+/* Number of extra output files that lang_specific_pre_link may generate. */
+int lang_specific_extra_outfiles = 0; /* Not used for cpp. */
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