/* C/ObjC/C++ command line option handling.
- Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Neil Booth.
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. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "debug.h" /* For debug_hooks. */
#include "opts.h"
#include "options.h"
+#include "mkdeps.h"
#ifndef DOLLARS_IN_IDENTIFIERS
# define DOLLARS_IN_IDENTIFIERS true
# define TARGET_SYSTEM_ROOT NULL
#endif
-static int saved_lineno;
+#ifndef TARGET_OPTF
+#define TARGET_OPTF(ARG)
+#endif
/* CPP's options. */
static cpp_options *cpp_opts;
/* If -v seen. */
static bool verbose;
+/* If -lang-fortran seen. */
+static bool lang_fortran = false;
+
/* Dependency output file. */
static const char *deps_file;
/* The prefix given by -iprefix, if any. */
static const char *iprefix;
+/* The multilib directory given by -imultilib, if any. */
+static const char *imultilib;
+
/* The system root, if any. Overridden by -isysroot. */
static const char *sysroot = TARGET_SYSTEM_ROOT;
/* If -Wunused-macros. */
static bool warn_unused_macros;
+/* If -Wvariadic-macros. */
+static bool warn_variadic_macros = true;
+
/* Number of deferred options. */
static size_t deferred_count;
/* Number of deferred options scanned for -include. */
static size_t include_cursor;
-/* Permit Fotran front-end options. */
-static bool permit_fortran_options;
-
static void set_Wimplicit (int);
static void handle_OPT_d (const char *);
static void set_std_cxx98 (int);
+static void set_std_cxx0x (int);
static void set_std_c89 (int, int);
static void set_std_c99 (int);
static void check_deps_environment_vars (void);
static void add_prefixed_path (const char *, size_t);
static void push_command_line_include (void);
static void cb_file_change (cpp_reader *, const struct line_map *);
-static void finish_options (const char *);
+static void cb_dir_change (cpp_reader *, const char *);
+static void finish_options (void);
#ifndef STDC_0_IN_SYSTEM_HEADERS
#define STDC_0_IN_SYSTEM_HEADERS 0
return false;
case OPT_fconstant_string_class_:
- error ("no class name specified with \"%s\"", opt);
+ error ("no class name specified with %qs", opt);
break;
case OPT_A:
- error ("assertion missing after \"%s\"", opt);
+ error ("assertion missing after %qs", opt);
break;
case OPT_D:
case OPT_U:
- error ("macro name missing after \"%s\"", opt);
+ error ("macro name missing after %qs", opt);
break;
+ case OPT_F:
case OPT_I:
case OPT_idirafter:
case OPT_isysroot:
case OPT_isystem:
- error ("missing path after \"%s\"", opt);
+ case OPT_iquote:
+ error ("missing path after %qs", opt);
break;
case OPT_MF:
case OPT_include:
case OPT_imacros:
case OPT_o:
- error ("missing filename after \"%s\"", opt);
+ error ("missing filename after %qs", opt);
break;
case OPT_MQ:
case OPT_MT:
- error ("missing makefile target after \"%s\"", opt);
+ error ("missing makefile target after %qs", opt);
break;
}
/* Common initialization before parsing options. */
unsigned int
-c_common_init_options (unsigned int argc, const char **argv ATTRIBUTE_UNUSED)
+c_common_init_options (unsigned int argc, const char **argv)
{
static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX};
- unsigned int result;
+ unsigned int i, result;
/* This is conditionalized only because that is the way the front
ends used to do it. Maybe this should be unconditional? */
}
parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89,
- ident_hash);
+ ident_hash, &line_table);
cpp_opts = cpp_get_options (parse_in);
cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
before passing on command-line options to cpplib. */
cpp_opts->warn_dollars = 0;
- flag_const_strings = c_dialect_cxx ();
flag_exceptions = c_dialect_cxx ();
warn_pointer_arith = c_dialect_cxx ();
+ warn_write_strings = c_dialect_cxx();
- deferred_opts = xmalloc (argc * sizeof (struct deferred_opt));
+ deferred_opts = XNEWVEC (struct deferred_opt, argc);
result = lang_flags[c_language];
- /* If potentially preprocessing Fortran we have to accept its front
- end options since the driver passes most of them through. */
-#ifdef CL_F77
- if (c_language == clk_c && argc > 2
- && !strcmp (argv[2], "-traditional-cpp" ))
+ if (c_language == clk_c)
{
- permit_fortran_options = true;
- result |= CL_F77;
- }
+ /* If preprocessing assembly language, accept any of the C-family
+ front end options since the driver may pass them through. */
+ for (i = 1; i < argc; i++)
+ if (! strcmp (argv[i], "-lang-asm"))
+ {
+ result |= CL_C | CL_ObjC | CL_CXX | CL_ObjCXX;
+ break;
+ }
+
+#ifdef CL_Fortran
+ for (i = 1; i < argc; i++)
+ if (! strcmp (argv[i], "-lang-fortran"))
+ {
+ result |= CL_Fortran;
+ break;
+ }
#endif
+ }
return result;
}
-/* Handle switch SCODE with argument ARG. ON is true, unless no-
+/* Handle switch SCODE with argument ARG. VALUE is true, unless no-
form of an -f or -W option was given. Returns 0 if the switch was
invalid, a negative number to prevent language-independent
processing in toplev.c (a hack necessary for the short-term). */
enum opt_code code = (enum opt_code) scode;
int result = 1;
+ /* Prevent resetting the language standard to a C dialect when the driver
+ has already determined that we're looking at assembler input. */
+ bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM);
+
switch (code)
{
default:
- result = permit_fortran_options;
+ if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX))
+ break;
+#ifdef CL_Fortran
+ if (lang_fortran && (cl_options[code].flags & (CL_Fortran)))
+ break;
+#endif
+ result = 0;
break;
case OPT__output_pch_:
cpp_opts->print_include_names = 1;
break;
+ case OPT_F:
+ TARGET_OPTF (xstrdup (arg));
+ break;
+
case OPT_I:
if (strcmp (arg, "-"))
- add_path (xstrdup (arg), BRACKET, 0);
+ add_path (xstrdup (arg), BRACKET, 0, true);
else
{
if (quote_chain_split)
error ("-I- specified twice");
quote_chain_split = true;
split_quote_chain ();
+ inform ("obsolete option -I- used, please use -iquote instead");
}
break;
flag_no_line_commands = 1;
break;
- case OPT_U:
- defer_opt (code, arg);
+ case OPT_fworking_directory:
+ flag_working_directory = value;
break;
- case OPT_Wabi:
- warn_abi = value;
+ case OPT_U:
+ defer_opt (code, arg);
break;
case OPT_Wall:
warn_sign_compare = value;
warn_switch = value;
warn_strict_aliasing = value;
+ warn_strict_overflow = value;
+ warn_string_literal_comparison = value;
+ warn_always_true = value;
+ warn_array_bounds = value;
/* Only warn about unknown pragmas that are not in system
headers. */
else
{
/* C++-specific warnings. */
- warn_nonvdtor = value;
warn_reorder = value;
warn_nontemplate_friend = value;
+ warn_cxx0x_compat = value;
+ if (value > 0)
+ warn_write_strings = true;
}
cpp_opts->warn_trigraphs = value;
cpp_opts->warn_comments = value;
cpp_opts->warn_num_sign_change = value;
cpp_opts->warn_multichar = value; /* Was C++ only. */
- break;
-
- case OPT_Wbad_function_cast:
- warn_bad_function_cast = value;
- break;
- case OPT_Wcast_qual:
- warn_cast_qual = value;
- break;
-
- case OPT_Wchar_subscripts:
- warn_char_subscripts = value;
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 1;
break;
case OPT_Wcomment:
cpp_opts->warn_comments = value;
break;
- case OPT_Wconversion:
- warn_conversion = value;
- break;
-
- case OPT_Wctor_dtor_privacy:
- warn_ctor_dtor_privacy = value;
- break;
-
- case OPT_Wdeclaration_after_statement:
- warn_declaration_after_statement = value;
- break;
-
case OPT_Wdeprecated:
- warn_deprecated = value;
cpp_opts->warn_deprecated = value;
break;
- case OPT_Wdiv_by_zero:
- warn_div_by_zero = value;
- break;
-
- case OPT_Weffc__:
- warn_ecpp = value;
- break;
-
case OPT_Wendif_labels:
cpp_opts->warn_endif_labels = value;
break;
case OPT_Werror:
cpp_opts->warnings_are_errors = value;
+ global_dc->warning_as_error_requested = value;
break;
- case OPT_Werror_implicit_function_declaration:
- mesg_implicit_function_declaration = 2;
- break;
-
- case OPT_Wfloat_equal:
- warn_float_equal = value;
+ case OPT_Werror_implicit_function_declaration:
+ /* For backward compatibility, this is the same as
+ -Werror=implicit-function-declaration. */
+ enable_warning_as_error ("implicit-function-declaration", value, CL_C | CL_ObjC);
break;
case OPT_Wformat:
set_Wformat (atoi (arg));
break;
- case OPT_Wformat_extra_args:
- warn_format_extra_args = value;
- break;
-
- case OPT_Wformat_nonliteral:
- warn_format_nonliteral = value;
- break;
-
- case OPT_Wformat_security:
- warn_format_security = value;
- break;
-
- case OPT_Wformat_y2k:
- warn_format_y2k = value;
- break;
-
- case OPT_Wformat_zero_length:
- warn_format_zero_length = value;
- break;
-
case OPT_Wimplicit:
set_Wimplicit (value);
break;
- case OPT_Wimplicit_function_declaration:
- mesg_implicit_function_declaration = value;
- break;
-
- case OPT_Wimplicit_int:
- warn_implicit_int = value;
- break;
-
case OPT_Wimport:
/* Silently ignore for now. */
break;
- case OPT_Winvalid_offsetof:
- warn_invalid_offsetof = value;
- break;
-
case OPT_Winvalid_pch:
cpp_opts->warn_invalid_pch = value;
break;
- case OPT_Wlong_long:
- warn_long_long = value;
- break;
-
case OPT_Wmain:
if (value)
warn_main = 1;
warn_main = -1;
break;
- case OPT_Wmissing_braces:
- warn_missing_braces = value;
- break;
-
- case OPT_Wmissing_declarations:
- warn_missing_declarations = value;
- break;
-
- case OPT_Wmissing_format_attribute:
- warn_missing_format_attribute = value;
- break;
-
- case OPT_Wmissing_prototypes:
- warn_missing_prototypes = value;
+ case OPT_Wmissing_include_dirs:
+ cpp_opts->warn_missing_include_dirs = value;
break;
case OPT_Wmultichar:
cpp_opts->warn_multichar = value;
break;
- case OPT_Wnested_externs:
- warn_nested_externs = value;
- break;
-
- case OPT_Wnon_template_friend:
- warn_nontemplate_friend = value;
- break;
-
- case OPT_Wnon_virtual_dtor:
- warn_nonvdtor = value;
- break;
-
- case OPT_Wnonnull:
- warn_nonnull = value;
- break;
-
- case OPT_Wold_style_cast:
- warn_old_style_cast = value;
- break;
-
- case OPT_Woverloaded_virtual:
- warn_overloaded_virtual = value;
- break;
-
- case OPT_Wparentheses:
- warn_parentheses = value;
- break;
-
- case OPT_Wpmf_conversions:
- warn_pmf2ptr = value;
- break;
-
- case OPT_Wpointer_arith:
- warn_pointer_arith = value;
- break;
-
- case OPT_Wprotocol:
- warn_protocol = value;
- break;
-
- case OPT_Wselector:
- warn_selector = value;
- break;
-
- case OPT_Wredundant_decls:
- warn_redundant_decls = value;
- break;
-
- case OPT_Wreorder:
- warn_reorder = value;
+ case OPT_Wnormalized_:
+ if (!value || (arg && strcasecmp (arg, "none") == 0))
+ cpp_opts->warn_normalize = normalized_none;
+ else if (!arg || strcasecmp (arg, "nfkc") == 0)
+ cpp_opts->warn_normalize = normalized_KC;
+ else if (strcasecmp (arg, "id") == 0)
+ cpp_opts->warn_normalize = normalized_identifier_C;
+ else if (strcasecmp (arg, "nfc") == 0)
+ cpp_opts->warn_normalize = normalized_C;
+ else
+ error ("argument %qs to %<-Wnormalized%> not recognized", arg);
break;
case OPT_Wreturn_type:
warn_return_type = value;
break;
- case OPT_Wsequence_point:
- warn_sequence_point = value;
- break;
-
- case OPT_Wsign_compare:
- warn_sign_compare = value;
- break;
-
- case OPT_Wsign_promo:
- warn_sign_promo = value;
- break;
-
- case OPT_Wstrict_prototypes:
- warn_strict_prototypes = value;
- break;
-
- case OPT_Wsynth:
- warn_synth = value;
+ case OPT_Wstrict_null_sentinel:
+ warn_strict_null_sentinel = value;
break;
case OPT_Wsystem_headers:
break;
case OPT_Wtraditional:
- warn_traditional = value;
cpp_opts->warn_traditional = value;
break;
cpp_opts->warn_trigraphs = value;
break;
- case OPT_Wundeclared_selector:
- warn_undeclared_selector = value;
- break;
-
case OPT_Wundef:
cpp_opts->warn_undef = value;
break;
warn_unused_macros = value;
break;
+ case OPT_Wvariadic_macros:
+ warn_variadic_macros = value;
+ break;
+
case OPT_Wwrite_strings:
- if (!c_dialect_cxx ())
- flag_const_strings = value;
- else
- warn_write_strings = value;
+ warn_write_strings = value;
+ break;
+
+ case OPT_Weffc__:
+ warn_ecpp = value;
+ if (value)
+ warn_nonvdtor = true;
break;
case OPT_ansi:
/* Fall through. */
case OPT_fall_virtual:
+ case OPT_falt_external_templates:
case OPT_fenum_int_equiv:
+ case OPT_fexternal_templates:
case OPT_fguiding_decls:
case OPT_fhonor_std:
case OPT_fhuge_objects:
case OPT_fvtable_thunks:
case OPT_fxref:
case OPT_fvtable_gc:
- warning ("switch \"%s\" is no longer supported", option->opt_text);
- break;
-
- case OPT_fabi_version_:
- flag_abi_version = value;
+ warning (0, "switch %qs is no longer supported", option->opt_text);
break;
case OPT_faccess_control:
flag_access_control = value;
break;
- case OPT_falt_external_templates:
- flag_alt_external_templates = value;
- if (value)
- flag_external_templates = true;
- cp_deprecated:
- warning ("switch \"%s\" is deprecated, please see documentation "
- "for details", option->opt_text);
- break;
-
case OPT_fasm:
flag_no_asm = !value;
break;
cpp_opts->dollars_in_ident = value;
break;
- case OPT_fdump_:
- if (!dump_switch_p (arg))
- result = 0;
- break;
-
case OPT_ffreestanding:
value = !value;
/* Fall through.... */
case OPT_fsigned_bitfields:
flag_signed_bitfields = value;
- explicit_flag_signed_bitfields = 1;
break;
case OPT_fsigned_char:
case OPT_funsigned_bitfields:
flag_signed_bitfields = !value;
- explicit_flag_signed_bitfields = 1;
break;
case OPT_funsigned_char:
flag_conserve_space = value;
break;
- case OPT_fconst_strings:
- flag_const_strings = value;
- break;
-
case OPT_fconstant_string_class_:
constant_string_class_name = arg;
break;
flag_enforce_eh_specs = value;
break;
- case OPT_fexternal_templates:
- flag_external_templates = value;
- goto cp_deprecated;
-
- case OPT_ffixed_form:
- case OPT_ffixed_line_length_:
- /* Fortran front end options ignored when preprocessing only. */
- if (!flag_preprocess_only)
- result = 0;
+ case OPT_fextended_identifiers:
+ cpp_opts->extended_identifiers = value;
break;
case OPT_ffor_scope:
break;
case OPT_fhandle_exceptions:
- warning ("-fhandle-exceptions has been renamed -fexceptions (and is now on by default)");
+ warning (0, "-fhandle-exceptions has been renamed -fexceptions (and is now on by default)");
flag_exceptions = value;
break;
flag_implicit_templates = value;
break;
+ case OPT_flax_vector_conversions:
+ flag_lax_vector_conversions = value;
+ break;
+
case OPT_fms_extensions:
flag_ms_extensions = value;
break;
flag_next_runtime = value;
break;
+ case OPT_fnil_receivers:
+ flag_nil_receivers = value;
+ break;
+
case OPT_fnonansi_builtins:
flag_no_nonansi_builtin = !value;
break;
cpp_opts->restore_pch_deps = value;
break;
+ case OPT_fpch_preprocess:
+ flag_pch_preprocess = value;
+ break;
+
case OPT_fpermissive:
flag_permissive = value;
break;
cpp_opts->preprocessed = value;
break;
+ case OPT_freplace_objc_classes:
+ flag_replace_objc_classes = value;
+ break;
+
case OPT_frepo:
flag_use_repository = value;
if (value)
cpp_opts->wide_charset = arg;
break;
+ case OPT_finput_charset_:
+ cpp_opts->input_charset = arg;
+ break;
+
case OPT_ftemplate_depth_:
max_tinst_depth = value;
break;
flag_use_cxa_atexit = value;
break;
+ case OPT_fuse_cxa_get_exception_ptr:
+ flag_use_cxa_get_exception_ptr = value;
+ break;
+
+ case OPT_fvisibility_inlines_hidden:
+ visibility_options.inlines_hidden = value;
+ break;
+
case OPT_fweak:
flag_weak = value;
break;
+ case OPT_fthreadsafe_statics:
+ flag_threadsafe_statics = value;
+ break;
+
+ case OPT_fzero_link:
+ flag_zero_link = value;
+ break;
+
case OPT_gen_decls:
flag_gen_declaration = 1;
break;
case OPT_idirafter:
- add_path (xstrdup (arg), AFTER, 0);
+ add_path (xstrdup (arg), AFTER, 0, true);
break;
case OPT_imacros:
defer_opt (code, arg);
break;
+ case OPT_imultilib:
+ imultilib = arg;
+ break;
+
case OPT_iprefix:
iprefix = arg;
break;
+ case OPT_iquote:
+ add_path (xstrdup (arg), QUOTE, 0, true);
+ break;
+
case OPT_isysroot:
sysroot = arg;
break;
case OPT_isystem:
- add_path (xstrdup (arg), SYSTEM, 0);
+ add_path (xstrdup (arg), SYSTEM, 0, true);
break;
case OPT_iwithprefix:
cpp_opts->dollars_in_ident = false;
break;
+ case OPT_lang_fortran:
+ lang_fortran = true;
+ break;
+
case OPT_lang_objc:
cpp_opts->objc = 1;
break;
case OPT_pedantic:
cpp_opts->pedantic = 1;
cpp_opts->warn_endif_labels = 1;
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 1;
+ if (warn_overlength_strings == -1)
+ warn_overlength_strings = 1;
break;
case OPT_print_objc_runtime_info:
print_struct_values = 1;
break;
+ case OPT_print_pch_checksum:
+ c_common_print_pch_checksum (stdout);
+ exit_after_options = true;
+ break;
+
case OPT_remap:
cpp_opts->remap = 1;
break;
case OPT_std_c__98:
case OPT_std_gnu__98:
- set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
+ break;
+
+ case OPT_std_c__0x:
+ case OPT_std_gnu__0x:
+ if (!preprocessing_asm_p)
+ set_std_cxx0x (code == OPT_std_c__0x /* ISO */);
break;
case OPT_std_c89:
case OPT_std_iso9899_1990:
case OPT_std_iso9899_199409:
- set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
break;
case OPT_std_gnu89:
- set_std_c89 (false /* c94 */, false /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c89 (false /* c94 */, false /* ISO */);
break;
case OPT_std_c99:
case OPT_std_c9x:
case OPT_std_iso9899_1999:
case OPT_std_iso9899_199x:
- set_std_c99 (true /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c99 (true /* ISO */);
break;
case OPT_std_gnu99:
case OPT_std_gnu9x:
- set_std_c99 (false /* ISO */);
+ if (!preprocessing_asm_p)
+ set_std_c99 (false /* ISO */);
break;
case OPT_trigraphs:
bool
c_common_post_options (const char **pfilename)
{
+ struct cpp_callbacks *cb;
+
/* Canonicalize the input and output filenames. */
if (in_fnames == NULL)
{
- in_fnames = xmalloc (sizeof (in_fnames[0]));
+ in_fnames = XNEWVEC (const char *, 1);
in_fnames[0] = "";
}
else if (strcmp (in_fnames[0], "-") == 0)
sanitize_cpp_opts ();
- register_include_chains (parse_in, sysroot, iprefix,
+ register_include_chains (parse_in, sysroot, iprefix, imultilib,
std_inc, std_cxx_inc && c_dialect_cxx (), verbose);
- flag_inline_trees = 1;
+#ifdef C_COMMON_OVERRIDE_OPTIONS
+ /* Some machines may reject certain combinations of C
+ language-specific options. */
+ C_COMMON_OVERRIDE_OPTIONS;
+#endif
- /* Use tree inlining if possible. Function instrumentation is only
- done in the RTL level, so we disable tree inlining. */
- if (! flag_instrument_function_entry_exit)
- {
- if (!flag_no_inline)
- flag_no_inline = 1;
- if (flag_inline_functions)
- {
- flag_inline_trees = 2;
- flag_inline_functions = 0;
- }
- }
+ flag_inline_trees = 1;
- /* -Wextra implies -Wsign-compare, but not if explicitly
- overridden. */
+ /* Use tree inlining. */
+ if (!flag_no_inline)
+ flag_no_inline = 1;
+ if (flag_inline_functions)
+ flag_inline_trees = 2;
+
+ /* If we are given more than one input file, we must use
+ unit-at-a-time mode. */
+ if (num_in_fnames > 1)
+ flag_unit_at_a_time = 1;
+
+ /* Default to ObjC sjlj exception handling if NeXT runtime. */
+ if (flag_objc_sjlj_exceptions < 0)
+ flag_objc_sjlj_exceptions = flag_next_runtime;
+ if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
+ flag_exceptions = 1;
+
+ /* -Wextra implies -Wclobbered, -Wempty-body, -Wsign-compare,
+ -Wmissing-field-initializers, -Wmissing-parameter-type
+ -Wold-style-declaration, and -Woverride-init,
+ but not if explicitly overridden. */
+ if (warn_clobbered == -1)
+ warn_clobbered = extra_warnings;
+ if (warn_empty_body == -1)
+ warn_empty_body = extra_warnings;
if (warn_sign_compare == -1)
warn_sign_compare = extra_warnings;
+ if (warn_missing_field_initializers == -1)
+ warn_missing_field_initializers = extra_warnings;
+ if (warn_missing_parameter_type == -1)
+ warn_missing_parameter_type = extra_warnings;
+ if (warn_old_style_declaration == -1)
+ warn_old_style_declaration = extra_warnings;
+ if (warn_override_init == -1)
+ warn_override_init = extra_warnings;
+
+ /* -Wpointer_sign is disabled by default, but it is enabled if any
+ of -Wall or -pedantic are given. */
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 0;
+
+ /* -Woverlength-strings is off by default, but is enabled by -pedantic.
+ It is never enabled in C++, as the minimum limit is not normative
+ in that standard. */
+ if (warn_overlength_strings == -1 || c_dialect_cxx ())
+ warn_overlength_strings = 0;
/* Special format checking options don't work without -Wformat; warn if
they are used. */
- if (warn_format_y2k && !warn_format)
- warning ("-Wformat-y2k ignored without -Wformat");
- if (warn_format_extra_args && !warn_format)
- warning ("-Wformat-extra-args ignored without -Wformat");
- if (warn_format_zero_length && !warn_format)
- warning ("-Wformat-zero-length ignored without -Wformat");
- if (warn_format_nonliteral && !warn_format)
- warning ("-Wformat-nonliteral ignored without -Wformat");
- if (warn_format_security && !warn_format)
- warning ("-Wformat-security ignored without -Wformat");
- if (warn_missing_format_attribute && !warn_format)
- warning ("-Wmissing-format-attribute ignored without -Wformat");
+ if (!warn_format)
+ {
+ warning (OPT_Wformat_y2k,
+ "-Wformat-y2k ignored without -Wformat");
+ warning (OPT_Wformat_extra_args,
+ "-Wformat-extra-args ignored without -Wformat");
+ warning (OPT_Wformat_zero_length,
+ "-Wformat-zero-length ignored without -Wformat");
+ warning (OPT_Wformat_nonliteral,
+ "-Wformat-nonliteral ignored without -Wformat");
+ warning (OPT_Wformat_security,
+ "-Wformat-security ignored without -Wformat");
+ }
+
+ /* -Wimplicit-function-declaration is enabled by default for C99. */
+ if (warn_implicit_function_declaration == -1)
+ warn_implicit_function_declaration = flag_isoc99;
+
+ /* C99 requires special handling of complex multiplication and division;
+ -ffast-math and -fcx-limited-range are handled in process_options. */
+ if (flag_isoc99)
+ flag_complex_method = 2;
+
+ /* If we're allowing C++0x constructs, don't warn about C++0x
+ compatibility problems. */
+ if (flag_cpp0x)
+ warn_cxx0x_compat = 0;
if (flag_preprocess_only)
{
init_c_lex ();
/* Yuk. WTF is this? I do know ObjC relies on it somewhere. */
- input_line = 0;
+ input_location = UNKNOWN_LOCATION;
}
- cpp_get_callbacks (parse_in)->file_change = cb_file_change;
-
- /* NOTE: we use in_fname here, not the one supplied. */
- *pfilename = cpp_read_main_file (parse_in, in_fnames[0]);
+ cb = cpp_get_callbacks (parse_in);
+ cb->file_change = cb_file_change;
+ cb->dir_change = cb_dir_change;
+ cpp_post_options (parse_in);
- saved_lineno = input_line;
- input_line = 0;
+ input_location = UNKNOWN_LOCATION;
/* If an error has occurred in cpplib, note it so we fail
immediately. */
errorcount += cpp_errors (parse_in);
+ *pfilename = this_input_filename
+ = cpp_read_main_file (parse_in, in_fnames[0]);
+ /* Don't do any compilation or preprocessing if there is no input file. */
+ if (this_input_filename == NULL)
+ {
+ errorcount++;
+ return false;
+ }
+
+ if (flag_working_directory
+ && flag_preprocess_only && !flag_no_line_commands)
+ pp_dir_change (parse_in, get_src_pwd ());
+
return flag_preprocess_only;
}
bool
c_common_init (void)
{
- input_line = saved_lineno;
-
/* Set up preprocessor arithmetic. Must be done after call to
c_common_nodes_and_builtins for type nodes to be good. */
cpp_opts->precision = TYPE_PRECISION (intmax_type_node);
cpp_opts->char_precision = TYPE_PRECISION (char_type_node);
cpp_opts->int_precision = TYPE_PRECISION (integer_type_node);
cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node);
- cpp_opts->unsigned_wchar = TREE_UNSIGNED (wchar_type_node);
+ cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node);
cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN;
/* This can't happen until after wchar_precision and bytes_big_endian
are known. */
cpp_init_iconv (parse_in);
+ if (version_flag)
+ c_common_print_pch_checksum (stderr);
+
if (flag_preprocess_only)
{
- finish_options (in_fnames[0]);
+ finish_options ();
preprocess_file (parse_in);
return false;
}
/* Initialize the integrated preprocessor after debug output has been
initialized; loop over each input file. */
void
-c_common_parse_file (int set_yydebug ATTRIBUTE_UNUSED)
+c_common_parse_file (int set_yydebug)
{
- unsigned file_index;
-
-#if YYDEBUG != 0
- yydebug = set_yydebug;
-#else
- warning ("YYDEBUG not defined");
-#endif
-
- file_index = 0;
-
- do
- {
- if (file_index > 0)
- {
- /* Reset the state of the parser. */
- c_reset_state();
+ unsigned int i;
- /* Reset cpplib's macros and start a new file. */
- cpp_undef_all (parse_in);
- cpp_stack_file (parse_in, in_fnames[file_index]);
- }
+ if (set_yydebug)
+ switch (c_language)
+ {
+ case clk_c:
+ warning(0, "The C parser does not support -dy, option ignored");
+ break;
+ case clk_objc:
+ warning(0,
+ "The Objective-C parser does not support -dy, option ignored");
+ break;
+ case clk_cxx:
+ warning(0, "The C++ parser does not support -dy, option ignored");
+ break;
+ case clk_objcxx:
+ warning(0,
+ "The Objective-C++ parser does not support -dy, option ignored");
+ break;
+ default:
+ gcc_unreachable ();
+ }
- finish_options(in_fnames[file_index]);
- if (file_index == 0)
- pch_init();
+ i = 0;
+ for (;;)
+ {
+ /* Start the main input file, if the debug writer wants it. */
+ if (debug_hooks->start_end_main_source_file)
+ (*debug_hooks->start_source_file) (0, this_input_filename);
+ finish_options ();
+ pch_init ();
+ push_file_scope ();
c_parse_file ();
-
- file_index++;
- } while (file_index < num_in_fnames);
-
- free_parser_stacks ();
- finish_file ();
+ finish_file ();
+ pop_file_scope ();
+ /* And end the main input file, if the debug writer wants it */
+ if (debug_hooks->start_end_main_source_file)
+ (*debug_hooks->end_source_file) (0);
+ if (++i >= num_in_fnames)
+ break;
+ cpp_undef_all (parse_in);
+ this_input_filename
+ = cpp_read_main_file (parse_in, in_fnames[i]);
+ /* If an input file is missing, abandon further compilation.
+ cpplib has issued a diagnostic. */
+ if (!this_input_filename)
+ break;
+ }
}
/* Common finish hook for the C, ObjC and C++ front ends. */
deps_file = spec;
deps_append = 1;
+ deps_seen = true;
}
}
handle_deferred_opts (void)
{
size_t i;
+ struct deps *deps;
+
+ /* Avoid allocating the deps buffer if we don't need it.
+ (This flag may be true without there having been -MT or -MQ
+ options, but we'll still need the deps buffer.) */
+ if (!deps_seen)
+ return;
+
+ deps = cpp_get_deps (parse_in);
for (i = 0; i < deferred_count; i++)
{
struct deferred_opt *opt = &deferred_opts[i];
if (opt->code == OPT_MT || opt->code == OPT_MQ)
- cpp_add_dependency_target (parse_in, opt->arg, opt->code == OPT_MQ);
+ deps_add_target (deps, opt->arg, opt->code == OPT_MQ);
}
}
/* Disable -dD, -dN and -dI if normal output is suppressed. Allow
-dM since at least glibc relies on -M -dM to work. */
+ /* Also, flag_no_output implies flag_no_line_commands, always. */
if (flag_no_output)
{
if (flag_dump_macros != 'M')
flag_dump_macros = 0;
flag_dump_includes = 0;
+ flag_no_line_commands = 1;
}
cpp_opts->unsigned_char = !flag_signed_char;
and/or -Wtraditional, whatever the ordering. */
cpp_opts->warn_long_long
= warn_long_long && ((!flag_isoc99 && pedantic) || warn_traditional);
+
+ /* Similarly with -Wno-variadic-macros. No check for c99 here, since
+ this also turns off warnings about GCCs extension. */
+ cpp_opts->warn_variadic_macros
+ = warn_variadic_macros && (pedantic || warn_traditional);
+
+ /* If we're generating preprocessor output, emit current directory
+ if explicitly requested or if debugging information is enabled.
+ ??? Maybe we should only do it for debugging formats that
+ actually output the current directory? */
+ if (flag_working_directory == -1)
+ flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE);
}
/* Add include path with a prefix at the front of its name. */
prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR;
prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len;
- path = xmalloc (prefix_len + suffix_len + 1);
+ path = (char *) xmalloc (prefix_len + suffix_len + 1);
memcpy (path, prefix, prefix_len);
memcpy (path + prefix_len, suffix, suffix_len);
path[prefix_len + suffix_len] = '\0';
- add_path (path, chain, 0);
+ add_path (path, chain, 0, false);
}
-/* Handle -D, -U, -A, -imacros, and the first -include.
- TIF is the input file to which we will return after processing all
- the includes. */
+/* Handle -D, -U, -A, -imacros, and the first -include. */
static void
-finish_options (const char *tif)
+finish_options (void)
{
if (!cpp_opts->preprocessed)
{
size_t i;
- cpp_change_file (parse_in, LC_RENAME, _("<built-in>"));
+ cb_file_change (parse_in,
+ linemap_add (&line_table, LC_RENAME, 0,
+ _("<built-in>"), 0));
+
cpp_init_builtins (parse_in, flag_hosted);
c_cpp_builtins (parse_in);
their acceptance on the -std= setting. */
cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99);
- cpp_change_file (parse_in, LC_RENAME, _("<command line>"));
+ cb_file_change (parse_in,
+ linemap_add (&line_table, LC_RENAME, 0,
+ _("<command-line>"), 0));
+
for (i = 0; i < deferred_count; i++)
{
struct deferred_opt *opt = &deferred_opts[i];
if (opt->code == OPT_imacros
&& cpp_push_include (parse_in, opt->arg))
- cpp_scan_nooutput (parse_in);
+ {
+ /* Disable push_command_line_include callback for now. */
+ include_cursor = deferred_count + 1;
+ cpp_scan_nooutput (parse_in);
+ }
}
}
include_cursor = 0;
- this_input_filename = tif;
push_command_line_include ();
}
static void
push_command_line_include (void)
{
- if (cpp_opts->preprocessed)
- return;
-
while (include_cursor < deferred_count)
{
struct deferred_opt *opt = &deferred_opts[include_cursor++];
- if (opt->code == OPT_include && cpp_push_include (parse_in, opt->arg))
+ if (!cpp_opts->preprocessed && opt->code == OPT_include
+ && cpp_push_include (parse_in, opt->arg))
return;
}
if (include_cursor == deferred_count)
{
- /* Restore the line map from <command line>. */
- cpp_change_file (parse_in, LC_RENAME, this_input_filename);
+ include_cursor++;
/* -Wunused-macros should only warn about macros defined hereafter. */
cpp_opts->warn_unused_macros = warn_unused_macros;
- include_cursor++;
+ /* Restore the line map from <command line>. */
+ if (!cpp_opts->preprocessed)
+ cpp_change_file (parse_in, LC_RENAME, this_input_filename);
+
+ /* Set this here so the client can change the option if it wishes,
+ and after stacking the main file so we don't trace the main file. */
+ line_table.trace_includes = cpp_opts->print_include_names;
}
}
/* File change callback. Has to handle -include files. */
static void
-cb_file_change (cpp_reader *pfile ATTRIBUTE_UNUSED,
+cb_file_change (cpp_reader * ARG_UNUSED (pfile),
const struct line_map *new_map)
{
if (flag_preprocess_only)
else
fe_file_change (new_map);
- if (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map))
+ if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map)))
push_command_line_include ();
}
+void
+cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir)
+{
+ if (!set_src_pwd (dir))
+ warning (0, "too late for # directive to set debug directory");
+}
+
/* Set the C 89 standard (with 1994 amendments if C94, without GNU
extensions if ISO). There is no concept of gnu94. */
static void
flag_no_asm = iso;
flag_no_gnu_keywords = iso;
flag_no_nonansi_builtin = iso;
- flag_noniso_default_format_attributes = !iso;
flag_isoc94 = c94;
flag_isoc99 = 0;
- flag_writable_strings = 0;
}
/* Set the C 99 standard (without GNU extensions if ISO). */
cpp_set_lang (parse_in, iso ? CLK_STDC99: CLK_GNUC99);
flag_no_asm = iso;
flag_no_nonansi_builtin = iso;
- flag_noniso_default_format_attributes = !iso;
flag_iso = iso;
flag_isoc99 = 1;
flag_isoc94 = 1;
- flag_writable_strings = 0;
}
/* Set the C++ 98 standard (without GNU extensions if ISO). */
cpp_set_lang (parse_in, iso ? CLK_CXX98: CLK_GNUCXX);
flag_no_gnu_keywords = iso;
flag_no_nonansi_builtin = iso;
- flag_noniso_default_format_attributes = !iso;
flag_iso = iso;
}
+/* Set the C++ 0x working draft "standard" (without GNU extensions if ISO). */
+static void
+set_std_cxx0x (int iso)
+{
+ cpp_set_lang (parse_in, iso ? CLK_CXX0X: CLK_GNUCXX0X);
+ flag_no_gnu_keywords = iso;
+ flag_no_nonansi_builtin = iso;
+ flag_iso = iso;
+ flag_cpp0x = 1;
+}
+
/* Handle setting implicit to ON. */
static void
set_Wimplicit (int on)
{
warn_implicit = on;
warn_implicit_int = on;
- if (on)
- {
- if (mesg_implicit_function_declaration != 2)
- mesg_implicit_function_declaration = 1;
- }
- else
- mesg_implicit_function_declaration = 0;
+ warn_implicit_function_declaration = on;
}
/* Args to -d specify what to dump. Silently ignore
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