/* Parse and display command line options.
- Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation,
- Inc.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Andy Vaught
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
-
-#include <string.h>
-#include <stdlib.h>
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "intl.h"
#include "opts.h"
#include "options.h"
+#include "params.h"
#include "tree-inline.h"
-
#include "gfortran.h"
+#include "target.h"
gfc_option_t gfc_option;
+/* Set flags that control warnings and errors for different
+ Fortran standards to their default values. */
+
+static void
+set_default_std_flags (void)
+{
+ gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
+ | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F77 | GFC_STD_GNU
+ | GFC_STD_LEGACY;
+ gfc_option.warn_std = GFC_STD_F95_DEL | GFC_STD_LEGACY;
+}
+
/* Get ready for options handling. */
unsigned int
gfc_init_options (unsigned int argc ATTRIBUTE_UNUSED,
const char **argv ATTRIBUTE_UNUSED)
{
-
- gfc_option.source = NULL;
+ 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 = 19;
+ gfc_option.max_continue_free = 39;
gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
+ gfc_option.max_subrecord_length = 0;
+ gfc_option.convert = CONVERT_NATIVE;
+ gfc_option.record_marker = 0;
gfc_option.verbose = 0;
gfc_option.warn_aliasing = 0;
+ gfc_option.warn_ampersand = 0;
+ gfc_option.warn_character_truncation = 0;
gfc_option.warn_conversion = 0;
gfc_option.warn_implicit_interface = 0;
gfc_option.warn_line_truncation = 0;
gfc_option.warn_surprising = 0;
- gfc_option.warn_unused_labels = 0;
-
+ gfc_option.warn_tabs = 1;
+ gfc_option.warn_underflow = 1;
+ 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_dollar_ok = 0;
gfc_option.flag_underscoring = 1;
- gfc_option.flag_second_underscore = 1;
+ gfc_option.flag_f2c = 0;
+ gfc_option.flag_second_underscore = -1;
gfc_option.flag_implicit_none = 0;
gfc_option.flag_max_stack_var_size = 32768;
- gfc_option.flag_module_access_private = 0;
- gfc_option.flag_no_backend = 0;
+ 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 = 1;
+ gfc_option.flag_allow_leading_underscore = 0;
+ gfc_option.flag_dump_core = 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.flag_openmp = 0;
- gfc_option.q_kind = gfc_default_double_kind ();
- gfc_option.i8 = 0;
- gfc_option.r8 = 0;
- gfc_option.d8 = 0;
+ gfc_option.fpe = 0;
- flag_argument_noalias = 2;
+ /* Argument pointers cannot point to anything but their argument. */
+ flag_argument_noalias = 3;
+
+ flag_errno_math = 0;
+
+ set_default_std_flags ();
+
+ gfc_option.warn_nonstd_intrinsics = 0;
+
+ /* -fshort-enums can be default on some targets. */
+ gfc_option.fshort_enums = targetm.default_short_enums ();
+
+ /* Increase MAX_ALIASED_VOPS to account for different characteristics
+ of Fortran regarding VOPs. */
+ MAX_ALIASED_VOPS = 50;
+
+ return CL_Fortran;
+}
- gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
- | GFC_STD_F2003_OBS | GFC_STD_F2003_DEL | GFC_STD_F2003 | GFC_STD_GNU;
- gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
- | GFC_STD_F2003 | GFC_STD_GNU;
- return CL_F95;
+/* 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}
+ ,
+ {
+ ".f", FORM_FIXED}
+ ,
+ {
+ ".for", 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;
}
bool
gfc_post_options (const char **pfilename)
{
- const char *filename = *pfilename;
+ const char *filename = *pfilename, *canon_source_file = NULL;
+ char *source_path;
+ int i;
/* Verify the input file name. */
if (!filename || strcmp (filename, "-") == 0)
filename = "";
}
- gfc_option.source = 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 = alloca (i + 1);
+ memcpy (source_path, canon_source_file, i);
+ source_path[i] = 0;
+ gfc_add_include_path (source_path, true);
+ }
+ else
+ gfc_add_include_path (".", true);
+
+ if (canon_source_file != gfc_source_file)
+ gfc_free ((void *) 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");
+ }
flag_inline_trees = 1;
if (!flag_no_inline)
flag_no_inline = 1;
if (flag_inline_functions)
- {
- flag_inline_trees = 2;
- flag_inline_functions = 0;
- }
+ flag_inline_trees = 2;
+
+ /* 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;
+
+ /* 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 (gfc_option.flag_all_intrinsics)
+ gfc_option.warn_nonstd_intrinsics = 0;
+
return false;
}
/* Set the options for -Wall. */
static void
-set_Wall (void)
+set_Wall (int setting)
{
-
- gfc_option.warn_aliasing = 1;
- gfc_option.warn_line_truncation = 1;
- gfc_option.warn_surprising = 1;
- gfc_option.warn_unused_labels = 1;
-
- set_Wunused (1);
- warn_return_type = 1;
- warn_switch = 1;
+ gfc_option.warn_aliasing = setting;
+ gfc_option.warn_ampersand = setting;
+ gfc_option.warn_line_truncation = setting;
+ gfc_option.warn_nonstd_intrinsics = setting;
+ gfc_option.warn_surprising = setting;
+ gfc_option.warn_tabs = !setting;
+ gfc_option.warn_underflow = setting;
+ gfc_option.warn_character_truncation = setting;
+
+ set_Wunused (setting);
+ warn_return_type = setting;
+ warn_switch = setting;
/* We save the value of warn_uninitialized, since if they put
-Wuninitialized on the command line, we need to generate a
warning about not using it without also specifying -O. */
-
- if (warn_uninitialized != 1)
+ if (setting == 0)
+ warn_uninitialized = 0;
+ else if (warn_uninitialized != 1)
warn_uninitialized = 2;
}
exit (3);
}
- gfc_option.module_dir = (char *) gfc_getmem (strlen (arg));
+ gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2);
strcpy (gfc_option.module_dir, arg);
strcat (gfc_option.module_dir, "/");
+
+ gfc_add_include_path (gfc_option.module_dir, true);
}
+
+static void
+gfc_handle_fpe_trap_option (const char *arg)
+{
+ int result, pos = 0, n;
+ static const char * const exception[] = { "invalid", "denormal", "zero",
+ "overflow", "underflow",
+ "precision", NULL };
+ static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL,
+ GFC_FPE_ZERO, GFC_FPE_OVERFLOW,
+ GFC_FPE_UNDERFLOW, GFC_FPE_PRECISION,
+ 0 };
+
+ while (*arg)
+ {
+ while (*arg == ',')
+ arg++;
+
+ while (arg[pos] && arg[pos] != ',')
+ pos++;
+
+ result = 0;
+ for (n = 0; exception[n] != NULL; n++)
+ {
+ if (exception[n] && strncmp (exception[n], arg, pos) == 0)
+ {
+ gfc_option.fpe |= opt_exception[n];
+ arg += pos;
+ pos = 0;
+ result = 1;
+ break;
+ }
+ }
+ if (!result)
+ gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg);
+ }
+}
+
+
/* Handle command-line options. Returns 0 if unrecognized, 1 if
recognized and handled. */
+
int
gfc_handle_option (size_t scode, const char *arg, int value)
{
break;
case OPT_Wall:
- set_Wall ();
+ set_Wall (value);
break;
case OPT_Waliasing:
gfc_option.warn_aliasing = value;
break;
+ case OPT_Wampersand:
+ gfc_option.warn_ampersand = value;
+ break;
+
+ case OPT_Wcharacter_truncation:
+ gfc_option.warn_character_truncation = value;
+ break;
+
case OPT_Wconversion:
gfc_option.warn_conversion = value;
break;
gfc_option.warn_surprising = value;
break;
- case OPT_Wunused_labels:
- gfc_option.warn_unused_labels = value;
+ case OPT_Wtabs:
+ gfc_option.warn_tabs = value;
+ break;
+
+ case OPT_Wunderflow:
+ gfc_option.warn_underflow = 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_fdump_core:
+ gfc_option.flag_dump_core = value;
+ 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_parse_tree:
gfc_option.verbose = value;
break;
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.flag_openmp = value;
+ break;
+
+ case OPT_ffree_line_length_none:
+ gfc_option.free_line_length = 0;
+ break;
+
+ case OPT_ffree_line_length_:
+ gfc_option.free_line_length = value;
+ break;
+
case OPT_funderscoring:
gfc_option.flag_underscoring = value;
break;
gfc_option.flag_implicit_none = value;
break;
- case OPT_fmax_stack_var_size_:
- gfc_option.flag_max_stack_var_size = value;
+ case OPT_fintrinsic_modules_path:
+ gfc_add_include_path (arg, false);
+ gfc_add_intrinsic_modules_path (arg);
break;
- case OPT_fmodule_private:
- gfc_option.flag_module_access_private = value;
+ case OPT_fmax_errors_:
+ gfc_option.max_errors = value;
break;
- case OPT_fno_backend:
- gfc_option.flag_no_backend = value;
+ case OPT_fmax_stack_var_size_:
+ gfc_option.flag_max_stack_var_size = value;
+ break;
+
+ case OPT_frange_check:
+ gfc_option.flag_range_check = value;
break;
case OPT_fpack_derived:
gfc_option.flag_repack_arrays = value;
break;
- case OPT_ffixed_line_length_80:
- gfc_option.fixed_line_length = 80;
- break;
-
- case OPT_ffixed_line_length_132:
- gfc_option.fixed_line_length = 132;
+ 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 idenitifier length is %d",
+ gfc_fatal_error ("Maximum supported identifier length is %d",
GFC_MAX_SYMBOL_LEN);
gfc_option.max_identifier_length = value;
break;
- case OPT_qkind_:
- if (gfc_validate_kind (BT_REAL, value) < 0)
- gfc_fatal_error ("Argument to -fqkind isn't a valid real kind");
- gfc_option.q_kind = value;
+ case OPT_fdefault_integer_8:
+ gfc_option.flag_default_integer = value;
break;
- case OPT_i8:
- gfc_option.i8 = value;
+ case OPT_fdefault_real_8:
+ gfc_option.flag_default_real = value;
break;
- case OPT_r8:
- gfc_option.r8 = value;
- break;
-
- case OPT_d8:
- gfc_option.d8 = value;
+ case OPT_fdefault_double_8:
+ gfc_option.flag_default_double = value;
break;
case OPT_I:
- gfc_add_include_path (arg);
+ gfc_add_include_path (arg, true);
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_F2003_OBS
- | GFC_STD_F2003_DEL;
+ 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_F2003_OBS
- | GFC_STD_F2003;
- gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2003_OBS;
+ 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;
+ gfc_option.warn_tabs = 0;
break;
case OPT_std_gnu:
- gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
- | GFC_STD_F2003_OBS | GFC_STD_F2003_DEL | GFC_STD_F2003 | GFC_STD_GNU;
- gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
- | GFC_STD_F2003_OBS | GFC_STD_F2003_DEL | GFC_STD_GNU;
+ set_default_std_flags ();
+ break;
+
+ case OPT_std_legacy:
+ set_default_std_flags ();
+ 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;
+
+ 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;
}
return result;
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