641 lines
15 KiB
C
641 lines
15 KiB
C
/* Parse and display command line options.
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006
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Free Software Foundation, Inc.
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Contributed by Andy Vaught
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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 2, 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 COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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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 "tree.h"
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#include "flags.h"
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#include "intl.h"
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#include "opts.h"
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#include "options.h"
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#include "tree-inline.h"
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#include "gfortran.h"
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#include "target.h"
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gfc_option_t gfc_option;
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/* Get ready for options handling. */
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unsigned int
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gfc_init_options (unsigned int argc ATTRIBUTE_UNUSED,
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const char **argv ATTRIBUTE_UNUSED)
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{
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gfc_source_file = NULL;
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gfc_option.module_dir = NULL;
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gfc_option.source_form = FORM_UNKNOWN;
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gfc_option.fixed_line_length = -1;
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gfc_option.free_line_length = -1;
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gfc_option.max_continue_fixed = 19;
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gfc_option.max_continue_free = 39;
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gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
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gfc_option.verbose = 0;
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gfc_option.warn_aliasing = 0;
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gfc_option.warn_ampersand = 0;
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gfc_option.warn_conversion = 0;
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gfc_option.warn_implicit_interface = 0;
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gfc_option.warn_line_truncation = 0;
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gfc_option.warn_surprising = 0;
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gfc_option.warn_tabs = 1;
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gfc_option.warn_underflow = 1;
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gfc_option.flag_all_intrinsics = 0;
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gfc_option.flag_default_double = 0;
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gfc_option.flag_default_integer = 0;
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gfc_option.flag_default_real = 0;
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gfc_option.flag_dollar_ok = 0;
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gfc_option.flag_underscoring = 1;
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gfc_option.flag_f2c = 0;
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gfc_option.flag_second_underscore = -1;
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gfc_option.flag_implicit_none = 0;
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gfc_option.flag_max_stack_var_size = 32768;
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gfc_option.flag_module_access_private = 0;
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gfc_option.flag_no_backend = 0;
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gfc_option.flag_range_check = 1;
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gfc_option.flag_pack_derived = 0;
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gfc_option.flag_repack_arrays = 0;
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gfc_option.flag_preprocessed = 0;
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gfc_option.flag_automatic = 1;
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gfc_option.flag_backslash = 1;
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gfc_option.flag_cray_pointer = 0;
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gfc_option.flag_d_lines = -1;
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gfc_option.flag_openmp = 0;
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gfc_option.q_kind = gfc_default_double_kind;
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gfc_option.fpe = 0;
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/* Argument pointers cannot point to anything
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but their argument. */
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flag_argument_noalias = 3;
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flag_errno_math = 0;
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gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
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| GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F77 | GFC_STD_GNU
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| GFC_STD_LEGACY;
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gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
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| GFC_STD_LEGACY;
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gfc_option.warn_nonstd_intrinsics = 0;
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/* -fshort-enums can be default on some targets. */
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gfc_option.fshort_enums = targetm.default_short_enums ();
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return CL_Fortran;
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}
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/* Determine the source form from the filename extension. We assume
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case insensitivity. */
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static gfc_source_form
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form_from_filename (const char *filename)
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{
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static const struct
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{
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const char *extension;
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gfc_source_form form;
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}
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exttype[] =
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{
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{
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".f90", FORM_FREE}
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,
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{
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".f95", FORM_FREE}
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,
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{
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".f", FORM_FIXED}
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,
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{
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".for", FORM_FIXED}
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,
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{
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"", FORM_UNKNOWN}
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}; /* sentinel value */
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gfc_source_form f_form;
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const char *fileext;
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int i;
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/* Find end of file name. Note, filename is either a NULL pointer or
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a NUL terminated string. */
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i = 0;
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while (filename[i] != '\0')
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i++;
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/* Find last period. */
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while (i >= 0 && (filename[i] != '.'))
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i--;
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/* Did we see a file extension? */
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if (i < 0)
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return FORM_UNKNOWN; /* Nope */
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/* Get file extension and compare it to others. */
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fileext = &(filename[i]);
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i = -1;
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f_form = FORM_UNKNOWN;
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do
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{
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i++;
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if (strcasecmp (fileext, exttype[i].extension) == 0)
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{
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f_form = exttype[i].form;
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break;
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}
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}
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while (exttype[i].form != FORM_UNKNOWN);
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return f_form;
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}
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/* Finalize commandline options. */
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bool
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gfc_post_options (const char **pfilename)
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{
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const char *filename = *pfilename, *canon_source_file = NULL;
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char *source_path;
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int i;
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/* Verify the input file name. */
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if (!filename || strcmp (filename, "-") == 0)
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{
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filename = "";
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}
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if (gfc_option.flag_preprocessed)
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{
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/* For preprocessed files, if the first tokens are of the form # NUM.
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handle the directives so we know the original file name. */
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gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file);
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if (gfc_source_file == NULL)
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gfc_source_file = filename;
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else
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*pfilename = gfc_source_file;
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}
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else
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gfc_source_file = filename;
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if (canon_source_file == NULL)
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canon_source_file = gfc_source_file;
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/* Adds the path where the source file is to the list of include files. */
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i = strlen (canon_source_file);
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while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i]))
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i--;
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if (i != 0)
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{
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source_path = alloca (i + 1);
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memcpy (source_path, canon_source_file, i);
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source_path[i] = 0;
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gfc_add_include_path (source_path);
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}
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else
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gfc_add_include_path (".");
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if (canon_source_file != gfc_source_file)
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gfc_free ((void *) canon_source_file);
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/* Decide which form the file will be read in as. */
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if (gfc_option.source_form != FORM_UNKNOWN)
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gfc_current_form = gfc_option.source_form;
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else
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{
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gfc_current_form = form_from_filename (filename);
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if (gfc_current_form == FORM_UNKNOWN)
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{
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gfc_current_form = FORM_FREE;
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gfc_warning_now ("Reading file '%s' as free form.",
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(filename[0] == '\0') ? "<stdin>" : filename);
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}
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}
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/* If the user specified -fd-lines-as-{code|comments} verify that we're
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in fixed form. */
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if (gfc_current_form == FORM_FREE)
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{
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if (gfc_option.flag_d_lines == 0)
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gfc_warning_now ("'-fd-lines-as-comments' has no effect "
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"in free form.");
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else if (gfc_option.flag_d_lines == 1)
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gfc_warning_now ("'-fd-lines-as-code' has no effect "
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"in free form.");
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}
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flag_inline_trees = 1;
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/* Use tree inlining. */
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if (!flag_no_inline)
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flag_no_inline = 1;
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if (flag_inline_functions)
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flag_inline_trees = 2;
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/* If -pedantic, warn about the use of GNU extensions. */
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if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
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gfc_option.warn_std |= GFC_STD_GNU;
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/* -std=legacy -pedantic is effectively -std=gnu. */
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if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0)
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gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY;
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/* If the user didn't explicitly specify -f(no)-second-underscore we
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use it if we're trying to be compatible with f2c, and not
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otherwise. */
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if (gfc_option.flag_second_underscore == -1)
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gfc_option.flag_second_underscore = gfc_option.flag_f2c;
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/* Implement -fno-automatic as -fmax-stack-var-size=0. */
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if (!gfc_option.flag_automatic)
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gfc_option.flag_max_stack_var_size = 0;
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if (pedantic)
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gfc_option.warn_ampersand = 1;
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if (gfc_option.flag_all_intrinsics)
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gfc_option.warn_nonstd_intrinsics = 0;
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return false;
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}
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/* Set the options for -Wall. */
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static void
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set_Wall (void)
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{
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gfc_option.warn_aliasing = 1;
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gfc_option.warn_ampersand = 1;
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gfc_option.warn_line_truncation = 1;
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gfc_option.warn_nonstd_intrinsics = 1;
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gfc_option.warn_surprising = 1;
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gfc_option.warn_tabs = 0;
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gfc_option.warn_underflow = 1;
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set_Wunused (1);
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warn_return_type = 1;
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warn_switch = 1;
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/* We save the value of warn_uninitialized, since if they put
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-Wuninitialized on the command line, we need to generate a
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warning about not using it without also specifying -O. */
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if (warn_uninitialized != 1)
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warn_uninitialized = 2;
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}
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static void
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gfc_handle_module_path_options (const char *arg)
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{
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if (gfc_option.module_dir != NULL)
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{
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gfc_status ("gfortran: Only one -M option allowed\n");
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exit (3);
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}
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if (arg == NULL)
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{
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gfc_status ("gfortran: Directory required after -M\n");
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exit (3);
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}
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gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2);
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strcpy (gfc_option.module_dir, arg);
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strcat (gfc_option.module_dir, "/");
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}
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static void
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gfc_handle_fpe_trap_option (const char *arg)
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{
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int result, pos = 0, n;
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static const char * const exception[] = { "invalid", "denormal", "zero",
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"overflow", "underflow",
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"precision", NULL };
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static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL,
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GFC_FPE_ZERO, GFC_FPE_OVERFLOW,
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GFC_FPE_UNDERFLOW, GFC_FPE_PRECISION,
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0 };
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while (*arg)
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{
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while (*arg == ',')
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arg++;
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while (arg[pos] && arg[pos] != ',')
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pos++;
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result = 0;
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for (n = 0; exception[n] != NULL; n++)
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{
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if (exception[n] && strncmp (exception[n], arg, pos) == 0)
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{
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gfc_option.fpe |= opt_exception[n];
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arg += pos;
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pos = 0;
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result = 1;
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break;
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}
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}
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if (! result)
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gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg);
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}
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}
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/* Handle command-line options. Returns 0 if unrecognized, 1 if
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recognized and handled. */
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int
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gfc_handle_option (size_t scode, const char *arg, int value)
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{
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int result = 1;
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enum opt_code code = (enum opt_code) scode;
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/* Ignore file names. */
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if (code == N_OPTS)
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return 1;
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switch (code)
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{
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default:
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result = 0;
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break;
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case OPT_Wall:
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set_Wall ();
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break;
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case OPT_Waliasing:
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gfc_option.warn_aliasing = value;
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break;
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case OPT_Wampersand:
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gfc_option.warn_ampersand = value;
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break;
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case OPT_Wconversion:
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gfc_option.warn_conversion = value;
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break;
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case OPT_Wimplicit_interface:
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gfc_option.warn_implicit_interface = value;
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break;
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case OPT_Wline_truncation:
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gfc_option.warn_line_truncation = value;
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break;
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case OPT_Wsurprising:
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gfc_option.warn_surprising = value;
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break;
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case OPT_Wtabs:
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gfc_option.warn_tabs = value;
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break;
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case OPT_Wunderflow:
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gfc_option.warn_underflow = value;
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break;
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case OPT_fall_intrinsics:
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gfc_option.flag_all_intrinsics = 1;
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break;
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case OPT_fautomatic:
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gfc_option.flag_automatic = value;
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break;
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case OPT_fbackslash:
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gfc_option.flag_backslash = value;
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break;
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case OPT_fcray_pointer:
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gfc_option.flag_cray_pointer = value;
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break;
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case OPT_ff2c:
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gfc_option.flag_f2c = value;
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break;
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case OPT_fdollar_ok:
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gfc_option.flag_dollar_ok = value;
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break;
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case OPT_fd_lines_as_code:
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gfc_option.flag_d_lines = 1;
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break;
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case OPT_fd_lines_as_comments:
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gfc_option.flag_d_lines = 0;
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break;
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case OPT_fdump_parse_tree:
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gfc_option.verbose = value;
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break;
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case OPT_ffixed_form:
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gfc_option.source_form = FORM_FIXED;
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break;
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case OPT_ffixed_line_length_none:
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gfc_option.fixed_line_length = 0;
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break;
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case OPT_ffixed_line_length_:
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if (value != 0 && value < 7)
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gfc_fatal_error ("Fixed line length must be at least seven.");
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gfc_option.fixed_line_length = value;
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break;
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case OPT_ffree_form:
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gfc_option.source_form = FORM_FREE;
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break;
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case OPT_fopenmp:
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gfc_option.flag_openmp = value;
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break;
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case OPT_ffree_line_length_none:
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gfc_option.free_line_length = 0;
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break;
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case OPT_ffree_line_length_:
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gfc_option.free_line_length = value;
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break;
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case OPT_funderscoring:
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gfc_option.flag_underscoring = value;
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break;
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case OPT_fsecond_underscore:
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gfc_option.flag_second_underscore = value;
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break;
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case OPT_fimplicit_none:
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gfc_option.flag_implicit_none = value;
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break;
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case OPT_fmax_stack_var_size_:
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gfc_option.flag_max_stack_var_size = value;
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break;
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case OPT_fmodule_private:
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gfc_option.flag_module_access_private = value;
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break;
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case OPT_fno_backend:
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gfc_option.flag_no_backend = value;
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break;
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case OPT_frange_check:
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gfc_option.flag_range_check = value;
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break;
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case OPT_fpack_derived:
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gfc_option.flag_pack_derived = value;
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break;
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case OPT_frepack_arrays:
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gfc_option.flag_repack_arrays = value;
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break;
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case OPT_fpreprocessed:
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gfc_option.flag_preprocessed = value;
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break;
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case OPT_fmax_identifier_length_:
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if (value > GFC_MAX_SYMBOL_LEN)
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gfc_fatal_error ("Maximum supported identifier length is %d",
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GFC_MAX_SYMBOL_LEN);
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gfc_option.max_identifier_length = value;
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break;
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case OPT_qkind_:
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if (gfc_validate_kind (BT_REAL, value, true) < 0)
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gfc_fatal_error ("Argument to -fqkind isn't a valid real kind");
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gfc_option.q_kind = value;
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break;
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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_I:
|
|
gfc_add_include_path (arg);
|
|
break;
|
|
|
|
case OPT_J:
|
|
case OPT_M:
|
|
gfc_handle_module_path_options (arg);
|
|
break;
|
|
|
|
case OPT_ffpe_trap_:
|
|
gfc_handle_fpe_trap_option (arg);
|
|
break;
|
|
|
|
case OPT_std_f95:
|
|
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77;
|
|
gfc_option.warn_std = GFC_STD_F95_OBS;
|
|
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_option.warn_std = GFC_STD_F95_OBS;
|
|
gfc_option.max_continue_fixed = 255;
|
|
gfc_option.max_continue_free = 255;
|
|
gfc_option.max_identifier_length = 63;
|
|
gfc_option.warn_ampersand = 1;
|
|
break;
|
|
|
|
case OPT_std_gnu:
|
|
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
|
|
| GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003
|
|
| GFC_STD_GNU | GFC_STD_LEGACY;
|
|
gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
|
|
| GFC_STD_LEGACY;
|
|
break;
|
|
|
|
case OPT_std_legacy:
|
|
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
|
|
| GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003
|
|
| GFC_STD_GNU | GFC_STD_LEGACY;
|
|
gfc_option.warn_std = 0;
|
|
break;
|
|
|
|
case OPT_Wnonstd_intrinsics:
|
|
gfc_option.warn_nonstd_intrinsics = value;
|
|
break;
|
|
|
|
case OPT_fshort_enums:
|
|
gfc_option.fshort_enums = 1;
|
|
break;
|
|
|
|
case OPT_fconvert_little_endian:
|
|
gfc_option.convert = CONVERT_LITTLE;
|
|
break;
|
|
|
|
case OPT_fconvert_big_endian:
|
|
gfc_option.convert = CONVERT_BIG;
|
|
break;
|
|
|
|
case OPT_fconvert_native:
|
|
gfc_option.convert = CONVERT_NATIVE;
|
|
break;
|
|
|
|
case OPT_fconvert_swap:
|
|
gfc_option.convert = 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;
|
|
}
|
|
|
|
return result;
|
|
}
|