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jeremybenn |
/* Specific flags and argument handling of the C front-end.
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Copyright (C) 1999, 2001, 2003, 2007, 2010 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "gcc.h"
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#include "opts.h"
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/* Filter command line before processing by the gcc driver proper. */
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void
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lang_specific_driver (struct cl_decoded_option **in_decoded_options ATTRIBUTE_UNUSED,
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unsigned int *in_decoded_options_count ATTRIBUTE_UNUSED,
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int *in_added_libraries ATTRIBUTE_UNUSED)
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{
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/* Systems which use the NeXT runtime by default should arrange
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for the shared libgcc to be used when -fgnu-runtime is passed
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through specs. */
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#if defined(ENABLE_SHARED_LIBGCC) && ! NEXT_OBJC_RUNTIME
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unsigned int i;
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/* The new argument list will be contained in this. */
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struct cl_decoded_option *new_decoded_options;
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/* True if we should add -shared-libgcc to the command-line. */
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int shared_libgcc = 0;
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/* The total number of arguments with the new stuff. */
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unsigned int argc;
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/* The argument list. */
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struct cl_decoded_option *decoded_options;
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argc = *in_decoded_options_count;
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decoded_options = *in_decoded_options;
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for (i = 1; i < argc; i++)
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{
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switch (decoded_options[i].opt_index)
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{
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case OPT_static_libgcc:
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case OPT_static:
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return;
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case OPT_SPECIAL_input_file:
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{
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const char *file = decoded_options[i].arg;
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int len;
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/* If the filename ends in .m or .mi, we are compiling
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ObjC and want to pass -shared-libgcc. */
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len = strlen (file);
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if ((len > 2 && file[len - 2] == '.' && file[len - 1] == 'm')
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|| (len > 3 && file[len - 3] == '.' && file[len - 2] == 'm'
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&& file[len - 1] == 'i'))
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shared_libgcc = 1;
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}
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break;
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}
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}
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if (shared_libgcc)
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{
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new_decoded_options = XNEWVEC (struct cl_decoded_option, argc + 1);
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i = 0;
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do
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{
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new_decoded_options[i] = decoded_options[i];
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i++;
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}
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while (i < argc);
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generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
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&new_decoded_options[i++]);
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*in_decoded_options_count = i;
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*in_decoded_options = new_decoded_options;
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}
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#endif
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}
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/* Called before linking. Returns 0 on success and -1 on failure. */
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int
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lang_specific_pre_link (void)
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{
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return 0; /* Not used for C. */
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}
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/* Number of extra output files that lang_specific_pre_link may generate. */
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int lang_specific_extra_outfiles = 0; /* Not used for C. */
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