--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/fortran/options.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,853 @@
+/* Parse and display command line options.
+   Copyright (C) 2000-2017 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 "target.h"
+#include "tree.h"
+#include "gfortran.h"
+#include "diagnostic.h"	/* For global_dc.  */
+#include "opts.h"
+#include "toplev.h"  /* For save_decoded_options.  */
+#include "cpp.h"
+#include "langhooks.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;
+}
+
+
+/* Set all the DEC extension flags.  */
+
+static void
+set_dec_flags (int value)
+{
+  if (value)
+    {
+      /* Allow legacy code without warnings.  */
+      gfc_option.allow_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL
+        | GFC_STD_GNU | GFC_STD_LEGACY;
+      gfc_option.warn_std &= ~(GFC_STD_LEGACY | GFC_STD_F95_DEL);
+    }
+
+  /* Set other DEC compatibility extensions.  */
+  flag_dollar_ok |= value;
+  flag_cray_pointer |= value;
+  flag_dec_structure |= value;
+  flag_dec_intrinsic_ints |= value;
+  flag_dec_static |= value;
+  flag_dec_math |= value;
+}
+
+
+/* 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->frontend_set_flag_errno_math = true;
+  opts->x_flag_associative_math = -1;
+  opts->frontend_set_flag_associative_math = true;
+}
+
+/* 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.max_continue_fixed = 255;
+  gfc_option.max_continue_free = 255;
+  gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
+  gfc_option.max_errors = 25;
+
+  gfc_option.flag_preprocessed = 0;
+  gfc_option.flag_d_lines = -1;
+  gfc_option.flag_init_integer = GFC_INIT_INTEGER_OFF;
+  gfc_option.flag_init_integer_value = 0;
+  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.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;
+
+  /* ??? Wmissing-include-dirs is disabled by default in C/C++ but
+     enabled by default in Fortran.  Ideally, we should express this
+     in .opt, but that is not supported yet.  */
+  if (!global_options_set.x_cpp_warn_missing_include_dirs)
+    global_options.x_cpp_warn_missing_include_dirs = 1;
+
+  set_dec_flags (0);
+
+  set_default_std_flags ();
+
+  /* Initialize cpp-related options.  */
+  gfc_cpp_init_options (decoded_options_count, decoded_options);
+  gfc_diagnostics_init ();
+}
+
+
+/* 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)
+    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 (flag_protect_parens == -1)
+    flag_protect_parens = !optimize_fast;
+
+  /* -Ofast sets implies -fstack-arrays unless an explicit size is set for
+     stack arrays.  */
+  if (flag_stack_arrays == -1 && flag_max_stack_var_size == -2)
+    flag_stack_arrays = optimize_fast;
+
+  /* By default, disable (re)allocation during assignment for -std=f95,
+     and enable it for F2003/F2008/GNU/Legacy.  */
+  if (flag_realloc_lhs == -1)
+    {
+      if (gfc_option.allow_std & GFC_STD_F2003)
+	flag_realloc_lhs = 1;
+      else
+	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)
+    flag_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 (0, "Reading file %qs 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 (0, "%<-fd-lines-as-comments%> has no effect "
+			   "in free form");
+      else if (gfc_option.flag_d_lines == 1)
+	gfc_warning_now (0, "%<-fd-lines-as-code%> has no effect in free form");
+
+      if (warn_line_truncation == -1)
+	  warn_line_truncation = 1;
+
+      /* Enable -Werror=line-truncation when -Werror and -Wno-error have
+	 not been set.  */
+      if (warn_line_truncation && !global_options_set.x_warnings_are_errors
+	  && (global_dc->classify_diagnostic[OPT_Wline_truncation] ==
+	      DK_UNSPECIFIED))
+	diagnostic_classify_diagnostic (global_dc, OPT_Wline_truncation,
+					DK_ERROR, UNKNOWN_LOCATION);
+    }
+  else
+    {
+      /* With -fdec, set -fd-lines-as-comments by default in fixed form.  */
+      if (flag_dec && gfc_option.flag_d_lines == -1)
+	gfc_option.flag_d_lines = 0;
+
+      if (warn_line_truncation == -1)
+	warn_line_truncation = 0;
+    }
+
+  /* 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 (flag_second_underscore == -1)
+    flag_second_underscore = flag_f2c;
+
+  if (!flag_automatic && flag_max_stack_var_size != -2
+      && flag_max_stack_var_size != 0)
+    gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-fmax-stack-var-size=%d%>",
+		     flag_max_stack_var_size);
+  else if (!flag_automatic && flag_recursive)
+    gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-frecursive%>");
+  else if (!flag_automatic && flag_openmp)
+    gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-frecursive%> implied by "
+		     "%<-fopenmp%>");
+  else if (flag_max_stack_var_size != -2 && flag_recursive)
+    gfc_warning_now (0, "Flag %<-frecursive%> overwrites %<-fmax-stack-var-size=%d%>",
+		     flag_max_stack_var_size);
+  else if (flag_max_stack_var_size != -2 && flag_openmp)
+    gfc_warning_now (0, "Flag %<-fmax-stack-var-size=%d%> overwrites %<-frecursive%> "
+		     "implied by %<-fopenmp%>", flag_max_stack_var_size);
+
+  /* Implement -frecursive as -fmax-stack-var-size=-1.  */
+  if (flag_recursive)
+    flag_max_stack_var_size = -1;
+
+  /* Implied -frecursive; implemented as -fmax-stack-var-size=-1.  */
+  if (flag_max_stack_var_size == -2 && flag_openmp && flag_automatic)
+    {
+      flag_recursive = 1;
+      flag_max_stack_var_size = -1;
+    }
+
+  /* Set flag_stack_arrays correctly.  */
+  if (flag_stack_arrays == -1)
+    flag_stack_arrays = 0;
+
+  /* Set default.  */
+  if (flag_max_stack_var_size == -2)
+    flag_max_stack_var_size = 32768;
+
+  /* Implement -fno-automatic as -fmax-stack-var-size=0.  */
+  if (!flag_automatic)
+    flag_max_stack_var_size = 0;
+  
+  /* If the user did not specify an inline matmul limit, inline up to the BLAS
+     limit or up to 30 if no external BLAS is specified.  */
+
+  if (flag_inline_matmul_limit < 0)
+    {
+      if (flag_external_blas)
+	flag_inline_matmul_limit = flag_blas_matmul_limit;
+      else
+	flag_inline_matmul_limit = 30;
+    }
+
+  /* Optimization implies front end optimization, unless the user
+     specified it directly.  */
+
+  if (flag_frontend_optimize == -1)
+    flag_frontend_optimize = optimize;
+
+  if (flag_max_array_constructor < 65535)
+    flag_max_array_constructor = 65535;
+
+  if (flag_fixed_line_length != 0 && flag_fixed_line_length < 7)
+    gfc_fatal_error ("Fixed line length must be at least seven");
+
+  if (flag_free_line_length != 0 && flag_free_line_length < 4)
+    gfc_fatal_error ("Free line length must be at least three");
+
+  if (flag_max_subrecord_length > MAX_SUBRECORD_LENGTH)
+    gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
+		     MAX_SUBRECORD_LENGTH);
+
+  gfc_cpp_post_options ();
+
+  if (gfc_option.allow_std & GFC_STD_F2008)
+    lang_hooks.name = "GNU Fortran2008";
+  else if (gfc_option.allow_std & GFC_STD_F2003)
+    lang_hooks.name = "GNU Fortran2003";
+
+  return gfc_cpp_preprocess_only ();
+}
+
+
+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_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;
+	    }
+	  else if (optname[n] && pos > 3 && strncmp ("no-", arg, 3) == 0
+		   && strncmp (optname[n], arg+3, pos-3) == 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:
+      if (cl_options[code].flags & gfc_option_lang_mask ())
+	break;
+      result = false;
+      break;
+
+    case OPT_fcheck_array_temporaries:
+      gfc_option.rtcheck |= GFC_RTCHECK_ARRAY_TEMPS;
+      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_ffixed_form:
+      gfc_option.source_form = FORM_FIXED;
+      break;
+
+    case OPT_ffree_form:
+      gfc_option.source_form = FORM_FREE;
+      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_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_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_finit_local_zero:
+      gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON;
+      gfc_option.flag_init_integer_value = 0;
+      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_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_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;
+      warn_ampersand = 1;
+      warn_tabs = 1;
+      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;
+      warn_ampersand = 1;
+      warn_tabs = 1;
+      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;
+      warn_ampersand = 1;
+      warn_tabs = 1;
+      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;
+      warn_ampersand = 1;
+      warn_tabs = 1;
+      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_fshort_enums:
+      /* Handled in language-independent code.  */
+      break;
+
+    case OPT_fcheck_:
+      gfc_handle_runtime_check_option (arg);
+      break;
+
+    case OPT_fdec:
+      /* Enable all DEC extensions.  */
+      set_dec_flags (1);
+      break;
+
+    case OPT_fdec_structure:
+      flag_dec_structure = 1;
+      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;
+
+  /* Allocate and return a one-character string with '\0'.  */
+  if (!save_decoded_options_count)
+    return XCNEWVEC (char, 1);
+
+  /* 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;
+}