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/* Specific flags and argument handling of the C front-end.
Copyright (C) 1999-2017 Free Software Foundation, Inc.
This file is part of GCC.
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.
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 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 "opts.h"
/* Filter command line before processing by the gcc driver proper. */
void
lang_specific_driver (struct cl_decoded_option **in_decoded_options ATTRIBUTE_UNUSED,
unsigned int *in_decoded_options_count ATTRIBUTE_UNUSED,
int *in_added_libraries ATTRIBUTE_UNUSED)
{
/* Systems which use the NeXT runtime by default should arrange
for the shared libgcc to be used when -fgnu-runtime is passed
through specs. */
#if defined(ENABLE_SHARED_LIBGCC) && ! NEXT_OBJC_RUNTIME
unsigned int i;
/* The new argument list will be contained in this. */
struct cl_decoded_option *new_decoded_options;
/* True if we should add -shared-libgcc to the command-line. */
int shared_libgcc = 0;
/* The total number of arguments with the new stuff. */
unsigned int argc;
/* The argument list. */
struct cl_decoded_option *decoded_options;
argc = *in_decoded_options_count;
decoded_options = *in_decoded_options;
for (i = 1; i < argc; i++)
{
switch (decoded_options[i].opt_index)
{
case OPT_static_libgcc:
case OPT_static:
return;
case OPT_SPECIAL_input_file:
{
const char *file = decoded_options[i].arg;
int len;
/* If the filename ends in .m or .mi, we are compiling
ObjC and want to pass -shared-libgcc. */
len = strlen (file);
if ((len > 2 && file[len - 2] == '.' && file[len - 1] == 'm')
|| (len > 3 && file[len - 3] == '.' && file[len - 2] == 'm'
&& file[len - 1] == 'i'))
shared_libgcc = 1;
}
break;
}
}
if (shared_libgcc)
{
new_decoded_options = XNEWVEC (struct cl_decoded_option, argc + 1);
i = 0;
do
{
new_decoded_options[i] = decoded_options[i];
i++;
}
while (i < argc);
generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
&new_decoded_options[i++]);
*in_decoded_options_count = i;
*in_decoded_options = new_decoded_options;
}
#endif
}
/* Called before linking. Returns 0 on success and -1 on failure. */
int
lang_specific_pre_link (void)
{
return 0; /* Not used for C. */
}
/* Number of extra output files that lang_specific_pre_link may generate. */
int lang_specific_extra_outfiles = 0; /* Not used for C. */
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