/* Parse and display command line options.
Copyright (C) 2000-2013 Free Software Foundation, Inc.
Contributed by Andy Vaught
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 "tree.h"
#include "flags.h"
#include "intl.h"
#include "opts.h"
#include "toplev.h" /* For save_decoded_options. */
#include "options.h"
#include "params.h"
#include "tree-inline.h"
#include "gfortran.h"
#include "target.h"
#include "cpp.h"
#include "diagnostic.h" /* For global_dc. */
#include "tm.h"
gfc_option_t gfc_option;
/* Set flags that control warnings and errors for different
Fortran standards to their default values. Keep in sync with
libgfortran/runtime/compile_options.c (init_compile_options). */
static void
set_default_std_flags (void)
{
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
| GFC_STD_F2003 | GFC_STD_F2008 | GFC_STD_F95 | GFC_STD_F77
| GFC_STD_F2008_OBS | GFC_STD_F2008_TS | GFC_STD_GNU | GFC_STD_LEGACY;
gfc_option.warn_std = GFC_STD_F95_DEL | GFC_STD_LEGACY;
}
/* Return language mask for Fortran options. */
unsigned int
gfc_option_lang_mask (void)
{
return CL_Fortran;
}
/* Initialize options structure OPTS. */
void
gfc_init_options_struct (struct gcc_options *opts)
{
opts->x_flag_errno_math = 0;
opts->x_flag_associative_math = -1;
}
/* Get ready for options handling. Keep in sync with
libgfortran/runtime/compile_options.c (init_compile_options). */
void
gfc_init_options (unsigned int decoded_options_count,
struct cl_decoded_option *decoded_options)
{
gfc_source_file = NULL;
gfc_option.module_dir = NULL;
gfc_option.source_form = FORM_UNKNOWN;
gfc_option.fixed_line_length = 72;
gfc_option.free_line_length = 132;
gfc_option.max_continue_fixed = 255;
gfc_option.max_continue_free = 255;
gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
gfc_option.max_subrecord_length = 0;
gfc_option.flag_max_array_constructor = 65535;
gfc_option.convert = GFC_CONVERT_NATIVE;
gfc_option.record_marker = 0;
gfc_option.dump_fortran_original = 0;
gfc_option.dump_fortran_optimized = 0;
gfc_option.warn_aliasing = 0;
gfc_option.warn_ampersand = 0;
gfc_option.warn_character_truncation = 0;
gfc_option.warn_array_temp = 0;
gfc_option.warn_c_binding_type = 0;
gfc_option.gfc_warn_conversion = 0;
gfc_option.warn_conversion_extra = 0;
gfc_option.warn_function_elimination = 0;
gfc_option.warn_implicit_interface = 0;
gfc_option.warn_line_truncation = 0;
gfc_option.warn_surprising = 0;
gfc_option.warn_tabs = 1;
gfc_option.warn_underflow = 1;
gfc_option.warn_intrinsic_shadow = 0;
gfc_option.warn_intrinsics_std = 0;
gfc_option.warn_align_commons = 1;
gfc_option.warn_real_q_constant = 0;
gfc_option.warn_unused_dummy_argument = 0;
gfc_option.warn_zerotrip = 0;
gfc_option.warn_realloc_lhs = 0;
gfc_option.warn_realloc_lhs_all = 0;
gfc_option.warn_compare_reals = 0;
gfc_option.warn_target_lifetime = 0;
gfc_option.max_errors = 25;
gfc_option.flag_all_intrinsics = 0;
gfc_option.flag_default_double = 0;
gfc_option.flag_default_integer = 0;
gfc_option.flag_default_real = 0;
gfc_option.flag_integer4_kind = 0;
gfc_option.flag_real4_kind = 0;
gfc_option.flag_real8_kind = 0;
gfc_option.flag_dollar_ok = 0;
gfc_option.flag_underscoring = 1;
gfc_option.flag_f2c = 0;
gfc_option.flag_second_underscore = -1;
gfc_option.flag_implicit_none = 0;
/* Default value of flag_max_stack_var_size is set in gfc_post_options. */
gfc_option.flag_max_stack_var_size = -2;
gfc_option.flag_stack_arrays = -1;
gfc_option.flag_range_check = 1;
gfc_option.flag_pack_derived = 0;
gfc_option.flag_repack_arrays = 0;
gfc_option.flag_preprocessed = 0;
gfc_option.flag_automatic = 1;
gfc_option.flag_backslash = 0;
gfc_option.flag_module_private = 0;
gfc_option.flag_backtrace = 1;
gfc_option.flag_allow_leading_underscore = 0;
gfc_option.flag_external_blas = 0;
gfc_option.blas_matmul_limit = 30;
gfc_option.flag_cray_pointer = 0;
gfc_option.flag_d_lines = -1;
gfc_option.gfc_flag_openmp = 0;
gfc_option.flag_sign_zero = 1;
gfc_option.flag_recursive = 0;
gfc_option.flag_init_integer = GFC_INIT_INTEGER_OFF;
gfc_option.flag_init_integer_value = 0;
gfc_option.flag_init_real = GFC_INIT_REAL_OFF;
gfc_option.flag_init_logical = GFC_INIT_LOGICAL_OFF;
gfc_option.flag_init_character = GFC_INIT_CHARACTER_OFF;
gfc_option.flag_init_character_value = (char)0;
gfc_option.flag_align_commons = 1;
gfc_option.flag_protect_parens = -1;
gfc_option.flag_realloc_lhs = -1;
gfc_option.flag_aggressive_function_elimination = 0;
gfc_option.flag_frontend_optimize = -1;
gfc_option.fpe = 0;
/* All except GFC_FPE_INEXACT. */
gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL
| GFC_FPE_ZERO | GFC_FPE_OVERFLOW
| GFC_FPE_UNDERFLOW;
gfc_option.rtcheck = 0;
gfc_option.coarray = GFC_FCOARRAY_NONE;
set_default_std_flags ();
/* Initialize cpp-related options. */
gfc_cpp_init_options (decoded_options_count, decoded_options);
}
/* Determine the source form from the filename extension. We assume
case insensitivity. */
static gfc_source_form
form_from_filename (const char *filename)
{
static const struct
{
const char *extension;
gfc_source_form form;
}
exttype[] =
{
{
".f90", FORM_FREE}
,
{
".f95", FORM_FREE}
,
{
".f03", FORM_FREE}
,
{
".f08", FORM_FREE}
,
{
".f", FORM_FIXED}
,
{
".for", FORM_FIXED}
,
{
".ftn", FORM_FIXED}
,
{
"", FORM_UNKNOWN}
}; /* sentinel value */
gfc_source_form f_form;
const char *fileext;
int i;
/* Find end of file name. Note, filename is either a NULL pointer or
a NUL terminated string. */
i = 0;
while (filename[i] != '\0')
i++;
/* Find last period. */
while (i >= 0 && (filename[i] != '.'))
i--;
/* Did we see a file extension? */
if (i < 0)
return FORM_UNKNOWN; /* Nope */
/* Get file extension and compare it to others. */
fileext = &(filename[i]);
i = -1;
f_form = FORM_UNKNOWN;
do
{
i++;
if (strcasecmp (fileext, exttype[i].extension) == 0)
{
f_form = exttype[i].form;
break;
}
}
while (exttype[i].form != FORM_UNKNOWN);
return f_form;
}
/* Finalize commandline options. */
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;
/* 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);
if (gfc_option.flag_protect_parens == -1)
gfc_option.flag_protect_parens = !optimize_fast;
if (gfc_option.flag_stack_arrays == -1)
gfc_option.flag_stack_arrays = optimize_fast;
/* 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, true);
}
else
gfc_add_include_path (".", true, true, true);
if (canon_source_file != gfc_source_file)
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;
}
/* Optimization implies front end optimization, unless the user
specified it directly. */
if (gfc_option.flag_frontend_optimize == -1)
gfc_option.flag_frontend_optimize = optimize;
if (gfc_option.warn_realloc_lhs_all)
gfc_option.warn_realloc_lhs = 1;
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;
}
/* Set the options for -Wall. */
static void
set_Wall (int setting)
{
gfc_option.warn_aliasing = setting;
gfc_option.warn_ampersand = setting;
gfc_option.warn_c_binding_type = setting;
gfc_option.gfc_warn_conversion = setting;
gfc_option.warn_line_truncation = setting;
gfc_option.warn_surprising = setting;
gfc_option.warn_tabs = !setting;
gfc_option.warn_underflow = setting;
gfc_option.warn_intrinsic_shadow = setting;
gfc_option.warn_intrinsics_std = setting;
gfc_option.warn_character_truncation = setting;
gfc_option.warn_real_q_constant = setting;
gfc_option.warn_unused_dummy_argument = setting;
gfc_option.warn_target_lifetime = setting;
gfc_option.warn_zerotrip = setting;
warn_return_type = setting;
warn_uninitialized = setting;
warn_maybe_uninitialized = setting;
}
/* Set the options for -Wextra. */
static void
set_Wextra (int setting)
{
gfc_option.warn_compare_reals = setting;
}
static void
gfc_handle_module_path_options (const char *arg)
{
if (gfc_option.module_dir != NULL)
gfc_fatal_error ("gfortran: Only one -J option allowed");
gfc_option.module_dir = XCNEWVEC (char, strlen (arg) + 2);
strcpy (gfc_option.module_dir, arg);
gfc_add_include_path (gfc_option.module_dir, true, false, true);
strcat (gfc_option.module_dir, "/");
}
/* Handle options -ffpe-trap= and -ffpe-summary=. */
static void
gfc_handle_fpe_option (const char *arg, bool trap)
{
int result, pos = 0, n;
/* precision is a backwards compatibility alias for inexact. */
static const char * const exception[] = { "invalid", "denormal", "zero",
"overflow", "underflow",
"inexact", "precision", NULL };
static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL,
GFC_FPE_ZERO, GFC_FPE_OVERFLOW,
GFC_FPE_UNDERFLOW, GFC_FPE_INEXACT,
GFC_FPE_INEXACT,
0 };
/* As the default for -ffpe-summary= is nonzero, set it to 0. */
if (!trap)
gfc_option.fpe_summary = 0;
while (*arg)
{
while (*arg == ',')
arg++;
while (arg[pos] && arg[pos] != ',')
pos++;
result = 0;
if (!trap && strncmp ("none", arg, pos) == 0)
{
gfc_option.fpe_summary = 0;
arg += pos;
pos = 0;
continue;
}
else if (!trap && strncmp ("all", arg, pos) == 0)
{
gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL
| GFC_FPE_ZERO | GFC_FPE_OVERFLOW
| GFC_FPE_UNDERFLOW | GFC_FPE_INEXACT;
arg += pos;
pos = 0;
continue;
}
else
for (n = 0; exception[n] != NULL; n++)
{
if (exception[n] && strncmp (exception[n], arg, pos) == 0)
{
if (trap)
gfc_option.fpe |= opt_exception[n];
else
gfc_option.fpe_summary |= opt_exception[n];
arg += pos;
pos = 0;
result = 1;
break;
}
}
if (!result && !trap)
gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg);
else if (!result)
gfc_fatal_error ("Argument to -ffpe-summary is not valid: %s", arg);
}
}
static void
gfc_handle_coarray_option (const char *arg)
{
if (strcmp (arg, "none") == 0)
gfc_option.coarray = GFC_FCOARRAY_NONE;
else if (strcmp (arg, "single") == 0)
gfc_option.coarray = GFC_FCOARRAY_SINGLE;
else if (strcmp (arg, "lib") == 0)
gfc_option.coarray = GFC_FCOARRAY_LIB;
else
gfc_fatal_error ("Argument to -fcoarray is not valid: %s", arg);
}
static void
gfc_handle_runtime_check_option (const char *arg)
{
int result, pos = 0, n;
static const char * const optname[] = { "all", "bounds", "array-temps",
"recursion", "do", "pointer",
"mem", NULL };
static const int optmask[] = { GFC_RTCHECK_ALL, GFC_RTCHECK_BOUNDS,
GFC_RTCHECK_ARRAY_TEMPS,
GFC_RTCHECK_RECURSION, GFC_RTCHECK_DO,
GFC_RTCHECK_POINTER, GFC_RTCHECK_MEM,
0 };
while (*arg)
{
while (*arg == ',')
arg++;
while (arg[pos] && arg[pos] != ',')
pos++;
result = 0;
for (n = 0; optname[n] != NULL; n++)
{
if (optname[n] && strncmp (optname[n], arg, pos) == 0)
{
gfc_option.rtcheck |= optmask[n];
arg += pos;
pos = 0;
result = 1;
break;
}
}
if (!result)
gfc_fatal_error ("Argument to -fcheck is not valid: %s", arg);
}
}
/* Handle command-line options. Returns 0 if unrecognized, 1 if
recognized and handled. */
bool
gfc_handle_option (size_t scode, const char *arg, int value,
int kind ATTRIBUTE_UNUSED, location_t loc ATTRIBUTE_UNUSED,
const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
{
bool result = true;
enum opt_code code = (enum opt_code) scode;
if (gfc_cpp_handle_option (scode, arg, value) == 1)
return true;
switch (code)
{
default:
result = false;
break;
case OPT_Wall:
handle_generated_option (&global_options, &global_options_set,
OPT_Wunused, NULL, value,
gfc_option_lang_mask (), kind, loc,
handlers, global_dc);
set_Wall (value);
break;
case OPT_Waliasing:
gfc_option.warn_aliasing = value;
break;
case OPT_Wampersand:
gfc_option.warn_ampersand = value;
break;
case OPT_Warray_temporaries:
gfc_option.warn_array_temp = value;
break;
case OPT_Wc_binding_type:
gfc_option.warn_c_binding_type = value;
break;
case OPT_Wcharacter_truncation:
gfc_option.warn_character_truncation = value;
break;
case OPT_Wcompare_reals:
gfc_option.warn_compare_reals = value;
break;
case OPT_Wconversion:
gfc_option.gfc_warn_conversion = value;
break;
case OPT_Wconversion_extra:
gfc_option.warn_conversion_extra = value;
break;
case OPT_Wextra:
handle_generated_option (&global_options, &global_options_set,
OPT_Wunused_parameter, NULL, value,
gfc_option_lang_mask (), kind, loc,
handlers, global_dc);
set_Wextra (value);
break;
case OPT_Wfunction_elimination:
gfc_option.warn_function_elimination = value;
break;
case OPT_Wimplicit_interface:
gfc_option.warn_implicit_interface = value;
break;
case OPT_Wimplicit_procedure:
gfc_option.warn_implicit_procedure = value;
break;
case OPT_Wline_truncation:
gfc_option.warn_line_truncation = value;
break;
case OPT_Wrealloc_lhs:
gfc_option.warn_realloc_lhs = value;
break;
case OPT_Wrealloc_lhs_all:
gfc_option.warn_realloc_lhs_all = value;
break;
case OPT_Wreturn_type:
warn_return_type = value;
break;
case OPT_Wsurprising:
gfc_option.warn_surprising = value;
break;
case OPT_Wtabs:
gfc_option.warn_tabs = value;
break;
case OPT_Wtarget_lifetime:
gfc_option.warn_target_lifetime = value;
break;
case OPT_Wunderflow:
gfc_option.warn_underflow = value;
break;
case OPT_Wintrinsic_shadow:
gfc_option.warn_intrinsic_shadow = value;
break;
case OPT_Walign_commons:
gfc_option.warn_align_commons = value;
break;
case OPT_Wreal_q_constant:
gfc_option.warn_real_q_constant = value;
break;
case OPT_Wunused_dummy_argument:
gfc_option.warn_unused_dummy_argument = value;
break;
case OPT_Wzerotrip:
gfc_option.warn_zerotrip = value;
break;
case OPT_fall_intrinsics:
gfc_option.flag_all_intrinsics = 1;
break;
case OPT_fautomatic:
gfc_option.flag_automatic = value;
break;
case OPT_fallow_leading_underscore:
gfc_option.flag_allow_leading_underscore = value;
break;
case OPT_fbackslash:
gfc_option.flag_backslash = value;
break;
case OPT_fbacktrace:
gfc_option.flag_backtrace = value;
break;
case OPT_fcheck_array_temporaries:
gfc_option.rtcheck |= GFC_RTCHECK_ARRAY_TEMPS;
break;
case OPT_fcray_pointer:
gfc_option.flag_cray_pointer = value;
break;
case OPT_ff2c:
gfc_option.flag_f2c = value;
break;
case OPT_fdollar_ok:
gfc_option.flag_dollar_ok = value;
break;
case OPT_fexternal_blas:
gfc_option.flag_external_blas = value;
break;
case OPT_fblas_matmul_limit_:
gfc_option.blas_matmul_limit = value;
break;
case OPT_fd_lines_as_code:
gfc_option.flag_d_lines = 1;
break;
case OPT_fd_lines_as_comments:
gfc_option.flag_d_lines = 0;
break;
case OPT_fdump_fortran_original:
case OPT_fdump_parse_tree:
gfc_option.dump_fortran_original = value;
break;
case OPT_fdump_fortran_optimized:
gfc_option.dump_fortran_optimized = value;
break;
case OPT_ffixed_form:
gfc_option.source_form = FORM_FIXED;
break;
case OPT_ffixed_line_length_none:
gfc_option.fixed_line_length = 0;
break;
case OPT_ffixed_line_length_:
if (value != 0 && value < 7)
gfc_fatal_error ("Fixed line length must be at least seven.");
gfc_option.fixed_line_length = value;
break;
case OPT_ffree_form:
gfc_option.source_form = FORM_FREE;
break;
case OPT_fopenmp:
gfc_option.gfc_flag_openmp = value;
break;
case OPT_ffree_line_length_none:
gfc_option.free_line_length = 0;
break;
case OPT_ffree_line_length_:
if (value != 0 && value < 4)
gfc_fatal_error ("Free line length must be at least three.");
gfc_option.free_line_length = value;
break;
case OPT_funderscoring:
gfc_option.flag_underscoring = value;
break;
case OPT_fsecond_underscore:
gfc_option.flag_second_underscore = value;
break;
case OPT_static_libgfortran:
#ifndef HAVE_LD_STATIC_DYNAMIC
gfc_fatal_error ("-static-libgfortran is not supported in this "
"configuration");
#endif
break;
case OPT_fimplicit_none:
gfc_option.flag_implicit_none = value;
break;
case OPT_fintrinsic_modules_path:
case OPT_fintrinsic_modules_path_:
/* This is needed because omp_lib.h is in a directory together
with intrinsic modules. Do no warn because during testing
without an installed compiler, we would get lots of bogus
warnings for a missing include directory. */
gfc_add_include_path (arg, false, false, false);
gfc_add_intrinsic_modules_path (arg);
break;
case OPT_fmax_array_constructor_:
gfc_option.flag_max_array_constructor = value > 65535 ? value : 65535;
break;
case OPT_fmax_stack_var_size_:
gfc_option.flag_max_stack_var_size = value;
break;
case OPT_fstack_arrays:
gfc_option.flag_stack_arrays = value;
break;
case OPT_fmodule_private:
gfc_option.flag_module_private = value;
break;
case OPT_frange_check:
gfc_option.flag_range_check = value;
break;
case OPT_fpack_derived:
gfc_option.flag_pack_derived = value;
break;
case OPT_frepack_arrays:
gfc_option.flag_repack_arrays = value;
break;
case OPT_fpreprocessed:
gfc_option.flag_preprocessed = value;
break;
case OPT_fmax_identifier_length_:
if (value > GFC_MAX_SYMBOL_LEN)
gfc_fatal_error ("Maximum supported identifier length is %d",
GFC_MAX_SYMBOL_LEN);
gfc_option.max_identifier_length = value;
break;
case OPT_fdefault_integer_8:
gfc_option.flag_default_integer = value;
break;
case OPT_fdefault_real_8:
gfc_option.flag_default_real = value;
break;
case OPT_fdefault_double_8:
gfc_option.flag_default_double = value;
break;
case OPT_finteger_4_integer_8:
gfc_option.flag_integer4_kind = 8;
break;
case OPT_freal_4_real_8:
gfc_option.flag_real4_kind = 8;
break;
case OPT_freal_4_real_10:
gfc_option.flag_real4_kind = 10;
break;
case OPT_freal_4_real_16:
gfc_option.flag_real4_kind = 16;
break;
case OPT_freal_8_real_4:
gfc_option.flag_real8_kind = 4;
break;
case OPT_freal_8_real_10:
gfc_option.flag_real8_kind = 10;
break;
case OPT_freal_8_real_16:
gfc_option.flag_real8_kind = 16;
break;
case OPT_finit_local_zero:
gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON;
gfc_option.flag_init_integer_value = 0;
gfc_option.flag_init_real = GFC_INIT_REAL_ZERO;
gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE;
gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON;
gfc_option.flag_init_character_value = (char)0;
break;
case OPT_finit_logical_:
if (!strcasecmp (arg, "false"))
gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE;
else if (!strcasecmp (arg, "true"))
gfc_option.flag_init_logical = GFC_INIT_LOGICAL_TRUE;
else
gfc_fatal_error ("Unrecognized option to -finit-logical: %s",
arg);
break;
case OPT_finit_real_:
if (!strcasecmp (arg, "zero"))
gfc_option.flag_init_real = GFC_INIT_REAL_ZERO;
else if (!strcasecmp (arg, "nan"))
gfc_option.flag_init_real = GFC_INIT_REAL_NAN;
else if (!strcasecmp (arg, "snan"))
gfc_option.flag_init_real = GFC_INIT_REAL_SNAN;
else if (!strcasecmp (arg, "inf"))
gfc_option.flag_init_real = GFC_INIT_REAL_INF;
else if (!strcasecmp (arg, "-inf"))
gfc_option.flag_init_real = GFC_INIT_REAL_NEG_INF;
else
gfc_fatal_error ("Unrecognized option to -finit-real: %s",
arg);
break;
case OPT_finit_integer_:
gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON;
gfc_option.flag_init_integer_value = atoi (arg);
break;
case OPT_finit_character_:
if (value >= 0 && value <= 127)
{
gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON;
gfc_option.flag_init_character_value = (char)value;
}
else
gfc_fatal_error ("The value of n in -finit-character=n must be "
"between 0 and 127");
break;
case OPT_I:
gfc_add_include_path (arg, true, false, true);
break;
case OPT_J:
gfc_handle_module_path_options (arg);
break;
case OPT_fsign_zero:
gfc_option.flag_sign_zero = value;
break;
case OPT_ffpe_trap_:
gfc_handle_fpe_option (arg, true);
break;
case OPT_ffpe_summary_:
gfc_handle_fpe_option (arg, false);
break;
case OPT_std_f95:
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77
| GFC_STD_F2008_OBS;
gfc_option.warn_std = GFC_STD_F95_OBS;
gfc_option.max_continue_fixed = 19;
gfc_option.max_continue_free = 39;
gfc_option.max_identifier_length = 31;
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
break;
case OPT_std_f2003:
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
| GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F2008_OBS;
gfc_option.warn_std = GFC_STD_F95_OBS;
gfc_option.max_identifier_length = 63;
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
break;
case OPT_std_f2008:
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
| GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F2008 | GFC_STD_F2008_OBS;
gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS;
gfc_option.max_identifier_length = 63;
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
break;
case OPT_std_f2008ts:
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
| GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F2008 | GFC_STD_F2008_OBS
| GFC_STD_F2008_TS;
gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS;
gfc_option.max_identifier_length = 63;
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
break;
case OPT_std_gnu:
set_default_std_flags ();
break;
case OPT_std_legacy:
set_default_std_flags ();
gfc_option.warn_std = 0;
break;
case OPT_Wintrinsics_std:
gfc_option.warn_intrinsics_std = value;
break;
case OPT_fshort_enums:
/* Handled in language-independent code. */
break;
case OPT_fconvert_little_endian:
gfc_option.convert = GFC_CONVERT_LITTLE;
break;
case OPT_fconvert_big_endian:
gfc_option.convert = GFC_CONVERT_BIG;
break;
case OPT_fconvert_native:
gfc_option.convert = GFC_CONVERT_NATIVE;
break;
case OPT_fconvert_swap:
gfc_option.convert = GFC_CONVERT_SWAP;
break;
case OPT_frecord_marker_4:
gfc_option.record_marker = 4;
break;
case OPT_frecord_marker_8:
gfc_option.record_marker = 8;
break;
case OPT_fmax_subrecord_length_:
if (value > MAX_SUBRECORD_LENGTH)
gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
MAX_SUBRECORD_LENGTH);
gfc_option.max_subrecord_length = value;
break;
case OPT_frecursive:
gfc_option.flag_recursive = value;
break;
case OPT_falign_commons:
gfc_option.flag_align_commons = value;
break;
case OPT_faggressive_function_elimination:
gfc_option.flag_aggressive_function_elimination = value;
break;
case OPT_ffrontend_optimize:
gfc_option.flag_frontend_optimize = value;
break;
case OPT_fprotect_parens:
gfc_option.flag_protect_parens = value;
break;
case OPT_frealloc_lhs:
gfc_option.flag_realloc_lhs = value;
break;
case OPT_fcheck_:
gfc_handle_runtime_check_option (arg);
break;
case OPT_fcoarray_:
gfc_handle_coarray_option (arg);
break;
}
Fortran_handle_option_auto (&global_options, &global_options_set,
scode, arg, value,
gfc_option_lang_mask (), kind,
loc, handlers, global_dc);
return result;
}
/* Return a string with the options passed to the compiler; used for
Fortran's compiler_options() intrinsic. */
char *
gfc_get_option_string (void)
{
unsigned j;
size_t len, pos;
char *result;
/* Determine required string length. */
len = 0;
for (j = 1; j < save_decoded_options_count; j++)
{
switch (save_decoded_options[j].opt_index)
{
case OPT_o:
case OPT_d:
case OPT_dumpbase:
case OPT_dumpdir:
case OPT_auxbase:
case OPT_quiet:
case OPT_version:
case OPT_fintrinsic_modules_path:
case OPT_fintrinsic_modules_path_:
/* Ignore these. */
break;
default:
/* Ignore file names. */
if (save_decoded_options[j].orig_option_with_args_text[0] == '-')
len += 1
+ strlen (save_decoded_options[j].orig_option_with_args_text);
}
}
result = XCNEWVEC (char, len);
pos = 0;
for (j = 1; j < save_decoded_options_count; j++)
{
switch (save_decoded_options[j].opt_index)
{
case OPT_o:
case OPT_d:
case OPT_dumpbase:
case OPT_dumpdir:
case OPT_auxbase:
case OPT_quiet:
case OPT_version:
case OPT_fintrinsic_modules_path:
case OPT_fintrinsic_modules_path_:
/* Ignore these. */
continue;
case OPT_cpp_:
/* Use "-cpp" rather than "-cpp=<temporary file>". */
len = 4;
break;
default:
/* Ignore file names. */
if (save_decoded_options[j].orig_option_with_args_text[0] != '-')
continue;
len = strlen (save_decoded_options[j].orig_option_with_args_text);
}
memcpy (&result[pos], save_decoded_options[j].orig_option_with_args_text, len);
pos += len;
result[pos++] = ' ';
}
result[--pos] = '\0';
return result;
}