bool
gfc_post_options (const char **pfilename)
{
const char *filename = *pfilename, *canon_source_file = NULL;
char *source_path;
int i;
/* Excess precision other than "fast" requires front-end
support. */
if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD
&& TARGET_FLT_EVAL_METHOD_NON_DEFAULT)
sorry ("-fexcess-precision=standard for Fortran");
flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
/* Whole program needs whole file mode. */
if (flag_whole_program)
gfc_option.flag_whole_file = 1;
/* Enable whole-file mode if LTO is in effect. */
if (flag_lto)
gfc_option.flag_whole_file = 1;
/* Fortran allows associative math - but we cannot reassociate if
we want traps or signed zeros. Cf. also flag_protect_parens. */
if (flag_associative_math == -1)
flag_associative_math = (!flag_trapping_math && !flag_signed_zeros);
/* By default, disable (re)allocation during assignment for -std=f95,
and enable it for F2003/F2008/GNU/Legacy. */
if (gfc_option.flag_realloc_lhs == -1)
{
if (gfc_option.allow_std & GFC_STD_F2003)
gfc_option.flag_realloc_lhs = 1;
else
gfc_option.flag_realloc_lhs = 0;
}
/* -fbounds-check is equivalent to -fcheck=bounds */
if (flag_bounds_check)
gfc_option.rtcheck |= GFC_RTCHECK_BOUNDS;
if (flag_compare_debug)
gfc_option.dump_fortran_original = 0;
/* Make -fmax-errors visible to gfortran's diagnostic machinery. */
if (global_options_set.x_flag_max_errors)
gfc_option.max_errors = flag_max_errors;
/* Verify the input file name. */
if (!filename || strcmp (filename, "-") == 0)
{
filename = "";
}
if (gfc_option.flag_preprocessed)
{
/* For preprocessed files, if the first tokens are of the form # NUM.
handle the directives so we know the original file name. */
gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file);
if (gfc_source_file == NULL)
gfc_source_file = filename;
else
*pfilename = gfc_source_file;
}
else
gfc_source_file = filename;
if (canon_source_file == NULL)
canon_source_file = gfc_source_file;
/* Adds the path where the source file is to the list of include files. */
i = strlen (canon_source_file);
while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i]))
i--;
if (i != 0)
{
source_path = (char *) alloca (i + 1);
memcpy (source_path, canon_source_file, i);
source_path[i] = 0;
gfc_add_include_path (source_path, true, true);
}
else
gfc_add_include_path (".", true, true);
if (canon_source_file != gfc_source_file)
gfc_free (CONST_CAST (char *, canon_source_file));
/* Decide which form the file will be read in as. */
if (gfc_option.source_form != FORM_UNKNOWN)
gfc_current_form = gfc_option.source_form;
else
{
gfc_current_form = form_from_filename (filename);
if (gfc_current_form == FORM_UNKNOWN)
{
gfc_current_form = FORM_FREE;
gfc_warning_now ("Reading file '%s' as free form",
(filename[0] == '\0') ? "<stdin>" : filename);
}
}
/* If the user specified -fd-lines-as-{code|comments} verify that we're
in fixed form. */
if (gfc_current_form == FORM_FREE)
{
if (gfc_option.flag_d_lines == 0)
gfc_warning_now ("'-fd-lines-as-comments' has no effect "
"in free form");
else if (gfc_option.flag_d_lines == 1)
gfc_warning_now ("'-fd-lines-as-code' has no effect in free form");
}
/* If -pedantic, warn about the use of GNU extensions. */
if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
gfc_option.warn_std |= GFC_STD_GNU;
/* -std=legacy -pedantic is effectively -std=gnu. */
if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0)
gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY;
/* If the user didn't explicitly specify -f(no)-second-underscore we
use it if we're trying to be compatible with f2c, and not
otherwise. */
if (gfc_option.flag_second_underscore == -1)
gfc_option.flag_second_underscore = gfc_option.flag_f2c;
if (!gfc_option.flag_automatic && gfc_option.flag_max_stack_var_size != -2
&& gfc_option.flag_max_stack_var_size != 0)
gfc_warning_now ("Flag -fno-automatic overwrites -fmax-stack-var-size=%d",
gfc_option.flag_max_stack_var_size);
else if (!gfc_option.flag_automatic && gfc_option.flag_recursive)
gfc_warning_now ("Flag -fno-automatic overwrites -frecursive");
else if (!gfc_option.flag_automatic && gfc_option.gfc_flag_openmp)
gfc_warning_now ("Flag -fno-automatic overwrites -frecursive implied by "
"-fopenmp");
else if (gfc_option.flag_max_stack_var_size != -2
&& gfc_option.flag_recursive)
gfc_warning_now ("Flag -frecursive overwrites -fmax-stack-var-size=%d",
gfc_option.flag_max_stack_var_size);
else if (gfc_option.flag_max_stack_var_size != -2
&& gfc_option.gfc_flag_openmp)
gfc_warning_now ("Flag -fmax-stack-var-size=%d overwrites -frecursive "
"implied by -fopenmp",
gfc_option.flag_max_stack_var_size);
/* Implement -frecursive as -fmax-stack-var-size=-1. */
if (gfc_option.flag_recursive)
gfc_option.flag_max_stack_var_size = -1;
/* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */
if (gfc_option.flag_max_stack_var_size == -2 && gfc_option.gfc_flag_openmp
&& gfc_option.flag_automatic)
{
gfc_option.flag_recursive = 1;
gfc_option.flag_max_stack_var_size = -1;
}
/* Set default. */
if (gfc_option.flag_max_stack_var_size == -2)
gfc_option.flag_max_stack_var_size = 32768;
/* Implement -fno-automatic as -fmax-stack-var-size=0. */
if (!gfc_option.flag_automatic)
gfc_option.flag_max_stack_var_size = 0;
if (pedantic)
{
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
}
if (pedantic && gfc_option.flag_whole_file)
gfc_option.flag_whole_file = 2;
gfc_cpp_post_options ();
/* FIXME: return gfc_cpp_preprocess_only ();
The return value of this function indicates whether the
backend needs to be initialized. On -E, we don't need
the backend. However, if we return 'true' here, an
ICE occurs. Initializing the backend doesn't hurt much,
hence, for now we can live with it as is. */
return false;
}
bool
gfc_post_options (const char **pfilename)
{
const char *filename = *pfilename, *canon_source_file = NULL;
char *source_path;
int i;
/* Issue an error if -fwhole-program was used. */
if (flag_whole_program)
gfc_fatal_error ("Option -fwhole-program is not supported for Fortran");
/* Verify the input file name. */
if (!filename || strcmp (filename, "-") == 0)
{
filename = "";
}
if (gfc_option.flag_preprocessed)
{
/* For preprocessed files, if the first tokens are of the form # NUM.
handle the directives so we know the original file name. */
gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file);
if (gfc_source_file == NULL)
gfc_source_file = filename;
else
*pfilename = gfc_source_file;
}
else
gfc_source_file = filename;
if (canon_source_file == NULL)
canon_source_file = gfc_source_file;
/* Adds the path where the source file is to the list of include files. */
i = strlen (canon_source_file);
while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i]))
i--;
if (i != 0)
{
source_path = (char *) alloca (i + 1);
memcpy (source_path, canon_source_file, i);
source_path[i] = 0;
gfc_add_include_path (source_path, true, true);
}
else
gfc_add_include_path (".", true, true);
if (canon_source_file != gfc_source_file)
gfc_free (CONST_CAST (char *, canon_source_file));
/* Decide which form the file will be read in as. */
if (gfc_option.source_form != FORM_UNKNOWN)
gfc_current_form = gfc_option.source_form;
else
{
gfc_current_form = form_from_filename (filename);
if (gfc_current_form == FORM_UNKNOWN)
{
gfc_current_form = FORM_FREE;
gfc_warning_now ("Reading file '%s' as free form",
(filename[0] == '\0') ? "<stdin>" : filename);
}
}
/* If the user specified -fd-lines-as-{code|comments} verify that we're
in fixed form. */
if (gfc_current_form == FORM_FREE)
{
if (gfc_option.flag_d_lines == 0)
gfc_warning_now ("'-fd-lines-as-comments' has no effect "
"in free form");
else if (gfc_option.flag_d_lines == 1)
gfc_warning_now ("'-fd-lines-as-code' has no effect in free form");
}
/* If -pedantic, warn about the use of GNU extensions. */
if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
gfc_option.warn_std |= GFC_STD_GNU;
/* -std=legacy -pedantic is effectively -std=gnu. */
if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0)
gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY;
/* If the user didn't explicitly specify -f(no)-second-underscore we
use it if we're trying to be compatible with f2c, and not
otherwise. */
if (gfc_option.flag_second_underscore == -1)
gfc_option.flag_second_underscore = gfc_option.flag_f2c;
if (!gfc_option.flag_automatic && gfc_option.flag_max_stack_var_size != -2
&& gfc_option.flag_max_stack_var_size != 0)
gfc_warning_now ("Flag -fno-automatic overwrites -fmax-stack-var-size=%d",
gfc_option.flag_max_stack_var_size);
else if (!gfc_option.flag_automatic && gfc_option.flag_recursive)
gfc_warning_now ("Flag -fno-automatic overwrites -frecursive");
else if (!gfc_option.flag_automatic && gfc_option.flag_openmp)
gfc_warning_now ("Flag -fno-automatic overwrites -frecursive implied by "
"-fopenmp");
else if (gfc_option.flag_max_stack_var_size != -2
&& gfc_option.flag_recursive)
gfc_warning_now ("Flag -frecursive overwrites -fmax-stack-var-size=%d",
gfc_option.flag_max_stack_var_size);
else if (gfc_option.flag_max_stack_var_size != -2
&& gfc_option.flag_openmp)
gfc_warning_now ("Flag -fmax-stack-var-size=%d overwrites -frecursive "
"implied by -fopenmp",
gfc_option.flag_max_stack_var_size);
/* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */
if (gfc_option.flag_max_stack_var_size == -2 && gfc_option.flag_openmp)
gfc_option.flag_max_stack_var_size = -1;
/* Set default. */
if (gfc_option.flag_max_stack_var_size == -2)
gfc_option.flag_max_stack_var_size = 32768;
/* Implement -frecursive as -fmax-stack-var-size=-1. */
if (gfc_option.flag_recursive)
gfc_option.flag_max_stack_var_size = -1;
/* Implement -fno-automatic as -fmax-stack-var-size=0. */
if (!gfc_option.flag_automatic)
gfc_option.flag_max_stack_var_size = 0;
if (pedantic)
{
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
}
gfc_cpp_post_options ();
/* FIXME: return gfc_cpp_preprocess_only ();
The return value of this function indicates whether the
backend needs to be initialized. On -E, we don't need
the backend. However, if we return 'true' here, an
ICE occurs. Initializing the backend doesn't hurt much,
hence, for now we can live with it as is. */
return false;
}