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707 |
jeremybenn |
/* C/ObjC/C++ command line option handling.
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Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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Free Software Foundation, Inc.
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Contributed by Neil Booth.
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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 3, 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 COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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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 "c-common.h"
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#include "c-pragma.h"
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#include "flags.h"
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#include "toplev.h"
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#include "langhooks.h"
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#include "diagnostic.h"
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#include "intl.h"
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#include "cppdefault.h"
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#include "incpath.h"
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#include "debug.h" /* For debug_hooks. */
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#include "opts.h"
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#include "options.h"
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#include "mkdeps.h"
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#include "c-target.h"
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#include "tm.h" /* For BYTES_BIG_ENDIAN,
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DOLLARS_IN_IDENTIFIERS,
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STDC_0_IN_SYSTEM_HEADERS,
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TARGET_FLT_EVAL_METHOD_NON_DEFAULT and
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TARGET_OPTF. */
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#include "tm_p.h" /* For C_COMMON_OVERRIDE_OPTIONS. */
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#ifndef DOLLARS_IN_IDENTIFIERS
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# define DOLLARS_IN_IDENTIFIERS true
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#endif
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#ifndef TARGET_SYSTEM_ROOT
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# define TARGET_SYSTEM_ROOT NULL
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#endif
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55 |
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#ifndef TARGET_OPTF
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#define TARGET_OPTF(ARG)
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#endif
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/* CPP's options. */
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cpp_options *cpp_opts;
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/* Input filename. */
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static const char *this_input_filename;
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/* Filename and stream for preprocessed output. */
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static const char *out_fname;
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static FILE *out_stream;
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/* Append dependencies to deps_file. */
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static bool deps_append;
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/* If dependency switches (-MF etc.) have been given. */
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static bool deps_seen;
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/* If -v seen. */
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static bool verbose;
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/* Dependency output file. */
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static const char *deps_file;
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/* The prefix given by -iprefix, if any. */
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static const char *iprefix;
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/* The multilib directory given by -imultilib, if any. */
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static const char *imultilib;
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/* The system root, if any. Overridden by -isysroot. */
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static const char *sysroot = TARGET_SYSTEM_ROOT;
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/* Zero disables all standard directories for headers. */
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static bool std_inc = true;
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/* Zero disables the C++-specific standard directories for headers. */
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static bool std_cxx_inc = true;
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/* If the quote chain has been split by -I-. */
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static bool quote_chain_split;
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/* If -Wunused-macros. */
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static bool warn_unused_macros;
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/* If -Wvariadic-macros. */
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static bool warn_variadic_macros = true;
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/* Number of deferred options. */
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static size_t deferred_count;
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108 |
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/* Number of deferred options scanned for -include. */
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static size_t include_cursor;
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static void handle_OPT_d (const char *);
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static void set_std_cxx98 (int);
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static void set_std_cxx11 (int);
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static void set_std_c89 (int, int);
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static void set_std_c99 (int);
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static void set_std_c11 (int);
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static void check_deps_environment_vars (void);
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static void handle_deferred_opts (void);
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static void sanitize_cpp_opts (void);
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static void add_prefixed_path (const char *, size_t);
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static void push_command_line_include (void);
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static void cb_file_change (cpp_reader *, const struct line_map *);
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static void cb_dir_change (cpp_reader *, const char *);
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static void c_finish_options (void);
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#ifndef STDC_0_IN_SYSTEM_HEADERS
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#define STDC_0_IN_SYSTEM_HEADERS 0
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#endif
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/* Holds switches parsed by c_common_handle_option (), but whose
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handling is deferred to c_common_post_options (). */
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static void defer_opt (enum opt_code, const char *);
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static struct deferred_opt
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{
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enum opt_code code;
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const char *arg;
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} *deferred_opts;
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extern const unsigned int
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c_family_lang_mask = (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX);
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/* Defer option CODE with argument ARG. */
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static void
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defer_opt (enum opt_code code, const char *arg)
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{
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deferred_opts[deferred_count].code = code;
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deferred_opts[deferred_count].arg = arg;
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deferred_count++;
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}
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/* Return language mask for option parsing. */
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unsigned int
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c_common_option_lang_mask (void)
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{
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156 |
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static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX};
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return lang_flags[c_language];
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}
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/* Common diagnostics initialization. */
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void
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c_common_initialize_diagnostics (diagnostic_context *context)
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{
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/* This is conditionalized only because that is the way the front
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ends used to do it. Maybe this should be unconditional? */
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if (c_dialect_cxx ())
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{
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/* By default wrap lines at 80 characters. Is getenv
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("COLUMNS") preferable? */
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diagnostic_line_cutoff (context) = 80;
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/* By default, emit location information once for every
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diagnostic message. */
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diagnostic_prefixing_rule (context) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
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}
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context->opt_permissive = OPT_fpermissive;
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}
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/* Whether options from all C-family languages should be accepted
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quietly. */
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static bool accept_all_c_family_options = false;
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/* Return whether to complain about a wrong-language option. */
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bool
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c_common_complain_wrong_lang_p (const struct cl_option *option)
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{
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if (accept_all_c_family_options
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&& (option->flags & c_family_lang_mask))
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return false;
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return true;
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}
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/* Initialize options structure OPTS. */
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void
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c_common_init_options_struct (struct gcc_options *opts)
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{
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opts->x_flag_exceptions = c_dialect_cxx ();
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opts->x_warn_pointer_arith = c_dialect_cxx ();
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opts->x_warn_write_strings = c_dialect_cxx ();
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opts->x_flag_warn_unused_result = true;
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/* By default, C99-like requirements for complex multiply and divide. */
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opts->x_flag_complex_method = 2;
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}
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/* Common initialization before calling option handlers. */
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void
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c_common_init_options (unsigned int decoded_options_count,
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struct cl_decoded_option *decoded_options)
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{
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213 |
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unsigned int i;
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struct cpp_callbacks *cb;
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parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89,
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ident_hash, line_table);
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cb = cpp_get_callbacks (parse_in);
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cb->error = c_cpp_error;
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cpp_opts = cpp_get_options (parse_in);
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cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
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cpp_opts->objc = c_dialect_objc ();
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/* Reset to avoid warnings on internal definitions. We set it just
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before passing on command-line options to cpplib. */
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cpp_opts->warn_dollars = 0;
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deferred_opts = XNEWVEC (struct deferred_opt, decoded_options_count);
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if (c_language == clk_c)
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{
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/* If preprocessing assembly language, accept any of the C-family
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front end options since the driver may pass them through. */
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for (i = 1; i < decoded_options_count; i++)
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if (decoded_options[i].opt_index == OPT_lang_asm)
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{
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accept_all_c_family_options = true;
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break;
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}
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}
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242 |
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}
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243 |
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244 |
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/* Handle switch SCODE with argument ARG. VALUE is true, unless no-
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245 |
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form of an -f or -W option was given. Returns false if the switch was
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246 |
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invalid, true if valid. Use HANDLERS in recursive handle_option calls. */
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247 |
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bool
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248 |
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c_common_handle_option (size_t scode, const char *arg, int value,
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249 |
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int kind, location_t loc,
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250 |
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const struct cl_option_handlers *handlers)
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251 |
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{
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252 |
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const struct cl_option *option = &cl_options[scode];
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253 |
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enum opt_code code = (enum opt_code) scode;
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254 |
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bool result = true;
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255 |
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256 |
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/* Prevent resetting the language standard to a C dialect when the driver
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257 |
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has already determined that we're looking at assembler input. */
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258 |
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bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM);
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259 |
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260 |
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switch (code)
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261 |
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{
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262 |
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default:
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263 |
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if (cl_options[code].flags & c_family_lang_mask)
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264 |
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{
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265 |
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if ((option->flags & CL_TARGET)
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266 |
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&& ! targetcm.handle_c_option (scode, arg, value))
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267 |
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result = false;
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268 |
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break;
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269 |
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}
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270 |
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result = false;
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271 |
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break;
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272 |
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273 |
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case OPT__output_pch_:
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274 |
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pch_file = arg;
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275 |
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break;
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276 |
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277 |
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case OPT_A:
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278 |
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defer_opt (code, arg);
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279 |
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break;
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280 |
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281 |
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case OPT_C:
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282 |
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cpp_opts->discard_comments = 0;
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283 |
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break;
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284 |
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285 |
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case OPT_CC:
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286 |
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cpp_opts->discard_comments = 0;
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287 |
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cpp_opts->discard_comments_in_macro_exp = 0;
|
288 |
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break;
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289 |
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|
290 |
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case OPT_D:
|
291 |
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defer_opt (code, arg);
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292 |
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break;
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293 |
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|
294 |
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case OPT_H:
|
295 |
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cpp_opts->print_include_names = 1;
|
296 |
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break;
|
297 |
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|
298 |
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case OPT_F:
|
299 |
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TARGET_OPTF (xstrdup (arg));
|
300 |
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break;
|
301 |
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|
302 |
|
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case OPT_I:
|
303 |
|
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if (strcmp (arg, "-"))
|
304 |
|
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add_path (xstrdup (arg), BRACKET, 0, true);
|
305 |
|
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else
|
306 |
|
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{
|
307 |
|
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if (quote_chain_split)
|
308 |
|
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error ("-I- specified twice");
|
309 |
|
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quote_chain_split = true;
|
310 |
|
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split_quote_chain ();
|
311 |
|
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inform (input_location, "obsolete option -I- used, please use -iquote instead");
|
312 |
|
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}
|
313 |
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break;
|
314 |
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|
315 |
|
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case OPT_M:
|
316 |
|
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case OPT_MM:
|
317 |
|
|
/* When doing dependencies with -M or -MM, suppress normal
|
318 |
|
|
preprocessed output, but still do -dM etc. as software
|
319 |
|
|
depends on this. Preprocessed output does occur if -MD, -MMD
|
320 |
|
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or environment var dependency generation is used. */
|
321 |
|
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cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM: DEPS_USER);
|
322 |
|
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flag_no_output = 1;
|
323 |
|
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break;
|
324 |
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|
325 |
|
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case OPT_MD:
|
326 |
|
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case OPT_MMD:
|
327 |
|
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cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM: DEPS_USER);
|
328 |
|
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cpp_opts->deps.need_preprocessor_output = true;
|
329 |
|
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deps_file = arg;
|
330 |
|
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break;
|
331 |
|
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|
332 |
|
|
case OPT_MF:
|
333 |
|
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deps_seen = true;
|
334 |
|
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deps_file = arg;
|
335 |
|
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break;
|
336 |
|
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|
337 |
|
|
case OPT_MG:
|
338 |
|
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deps_seen = true;
|
339 |
|
|
cpp_opts->deps.missing_files = true;
|
340 |
|
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break;
|
341 |
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|
342 |
|
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case OPT_MP:
|
343 |
|
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deps_seen = true;
|
344 |
|
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cpp_opts->deps.phony_targets = true;
|
345 |
|
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break;
|
346 |
|
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|
347 |
|
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case OPT_MQ:
|
348 |
|
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case OPT_MT:
|
349 |
|
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deps_seen = true;
|
350 |
|
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defer_opt (code, arg);
|
351 |
|
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break;
|
352 |
|
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|
353 |
|
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case OPT_P:
|
354 |
|
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flag_no_line_commands = 1;
|
355 |
|
|
break;
|
356 |
|
|
|
357 |
|
|
case OPT_U:
|
358 |
|
|
defer_opt (code, arg);
|
359 |
|
|
break;
|
360 |
|
|
|
361 |
|
|
case OPT_Wall:
|
362 |
|
|
warn_unused = value;
|
363 |
|
|
set_Wformat (value);
|
364 |
|
|
handle_generated_option (&global_options, &global_options_set,
|
365 |
|
|
OPT_Wimplicit, NULL, value,
|
366 |
|
|
c_family_lang_mask, kind, loc,
|
367 |
|
|
handlers, global_dc);
|
368 |
|
|
warn_char_subscripts = value;
|
369 |
|
|
warn_missing_braces = value;
|
370 |
|
|
warn_parentheses = value;
|
371 |
|
|
warn_return_type = value;
|
372 |
|
|
warn_sequence_point = value; /* Was C only. */
|
373 |
|
|
warn_switch = value;
|
374 |
|
|
if (warn_strict_aliasing == -1)
|
375 |
|
|
set_Wstrict_aliasing (&global_options, value);
|
376 |
|
|
warn_address = value;
|
377 |
|
|
if (warn_strict_overflow == -1)
|
378 |
|
|
warn_strict_overflow = value;
|
379 |
|
|
warn_array_bounds = value;
|
380 |
|
|
warn_volatile_register_var = value;
|
381 |
|
|
|
382 |
|
|
/* Only warn about unknown pragmas that are not in system
|
383 |
|
|
headers. */
|
384 |
|
|
warn_unknown_pragmas = value;
|
385 |
|
|
|
386 |
|
|
warn_uninitialized = value;
|
387 |
|
|
warn_maybe_uninitialized = value;
|
388 |
|
|
|
389 |
|
|
if (!c_dialect_cxx ())
|
390 |
|
|
{
|
391 |
|
|
/* We set this to 2 here, but 1 in -Wmain, so -ffreestanding
|
392 |
|
|
can turn it off only if it's not explicit. */
|
393 |
|
|
if (warn_main == -1)
|
394 |
|
|
warn_main = (value ? 2 : 0);
|
395 |
|
|
|
396 |
|
|
/* In C, -Wall turns on -Wenum-compare, which we do here.
|
397 |
|
|
In C++ it is on by default, which is done in
|
398 |
|
|
c_common_post_options. */
|
399 |
|
|
if (warn_enum_compare == -1)
|
400 |
|
|
warn_enum_compare = value;
|
401 |
|
|
}
|
402 |
|
|
else
|
403 |
|
|
{
|
404 |
|
|
/* C++-specific warnings. */
|
405 |
|
|
warn_sign_compare = value;
|
406 |
|
|
warn_reorder = value;
|
407 |
|
|
warn_cxx0x_compat = value;
|
408 |
|
|
warn_delnonvdtor = value;
|
409 |
|
|
warn_narrowing = value;
|
410 |
|
|
}
|
411 |
|
|
|
412 |
|
|
cpp_opts->warn_trigraphs = value;
|
413 |
|
|
cpp_opts->warn_comments = value;
|
414 |
|
|
cpp_opts->warn_num_sign_change = value;
|
415 |
|
|
|
416 |
|
|
if (warn_pointer_sign == -1)
|
417 |
|
|
warn_pointer_sign = value;
|
418 |
|
|
break;
|
419 |
|
|
|
420 |
|
|
case OPT_Wbuiltin_macro_redefined:
|
421 |
|
|
cpp_opts->warn_builtin_macro_redefined = value;
|
422 |
|
|
break;
|
423 |
|
|
|
424 |
|
|
case OPT_Wcomment:
|
425 |
|
|
cpp_opts->warn_comments = value;
|
426 |
|
|
break;
|
427 |
|
|
|
428 |
|
|
case OPT_Wc___compat:
|
429 |
|
|
/* Because -Wenum-compare is the default in C++, -Wc++-compat
|
430 |
|
|
implies -Wenum-compare. */
|
431 |
|
|
if (warn_enum_compare == -1 && value)
|
432 |
|
|
warn_enum_compare = value;
|
433 |
|
|
/* Because C++ always warns about a goto which misses an
|
434 |
|
|
initialization, -Wc++-compat turns on -Wjump-misses-init. */
|
435 |
|
|
if (warn_jump_misses_init == -1 && value)
|
436 |
|
|
warn_jump_misses_init = value;
|
437 |
|
|
cpp_opts->warn_cxx_operator_names = value;
|
438 |
|
|
break;
|
439 |
|
|
|
440 |
|
|
case OPT_Wc__0x_compat:
|
441 |
|
|
warn_narrowing = value;
|
442 |
|
|
break;
|
443 |
|
|
|
444 |
|
|
case OPT_Wdeprecated:
|
445 |
|
|
cpp_opts->cpp_warn_deprecated = value;
|
446 |
|
|
break;
|
447 |
|
|
|
448 |
|
|
case OPT_Wendif_labels:
|
449 |
|
|
cpp_opts->warn_endif_labels = value;
|
450 |
|
|
break;
|
451 |
|
|
|
452 |
|
|
case OPT_Wformat:
|
453 |
|
|
set_Wformat (value);
|
454 |
|
|
break;
|
455 |
|
|
|
456 |
|
|
case OPT_Wformat_:
|
457 |
|
|
set_Wformat (atoi (arg));
|
458 |
|
|
break;
|
459 |
|
|
|
460 |
|
|
case OPT_Wimplicit:
|
461 |
|
|
gcc_assert (value == 0 || value == 1);
|
462 |
|
|
if (warn_implicit_int == -1)
|
463 |
|
|
handle_generated_option (&global_options, &global_options_set,
|
464 |
|
|
OPT_Wimplicit_int, NULL, value,
|
465 |
|
|
c_family_lang_mask, kind, loc, handlers,
|
466 |
|
|
global_dc);
|
467 |
|
|
if (warn_implicit_function_declaration == -1)
|
468 |
|
|
handle_generated_option (&global_options, &global_options_set,
|
469 |
|
|
OPT_Wimplicit_function_declaration, NULL,
|
470 |
|
|
value, c_family_lang_mask, kind, loc,
|
471 |
|
|
handlers, global_dc);
|
472 |
|
|
break;
|
473 |
|
|
|
474 |
|
|
case OPT_Winvalid_pch:
|
475 |
|
|
cpp_opts->warn_invalid_pch = value;
|
476 |
|
|
break;
|
477 |
|
|
|
478 |
|
|
case OPT_Wlong_long:
|
479 |
|
|
cpp_opts->cpp_warn_long_long = value;
|
480 |
|
|
break;
|
481 |
|
|
|
482 |
|
|
case OPT_Wmissing_include_dirs:
|
483 |
|
|
cpp_opts->warn_missing_include_dirs = value;
|
484 |
|
|
break;
|
485 |
|
|
|
486 |
|
|
case OPT_Wmultichar:
|
487 |
|
|
cpp_opts->warn_multichar = value;
|
488 |
|
|
break;
|
489 |
|
|
|
490 |
|
|
case OPT_Wnormalized_:
|
491 |
|
|
if (kind == DK_ERROR)
|
492 |
|
|
{
|
493 |
|
|
gcc_assert (!arg);
|
494 |
|
|
inform (input_location, "-Werror=normalized=: set -Wnormalized=nfc");
|
495 |
|
|
cpp_opts->warn_normalize = normalized_C;
|
496 |
|
|
}
|
497 |
|
|
else
|
498 |
|
|
{
|
499 |
|
|
if (!value || (arg && strcasecmp (arg, "none") == 0))
|
500 |
|
|
cpp_opts->warn_normalize = normalized_none;
|
501 |
|
|
else if (!arg || strcasecmp (arg, "nfkc") == 0)
|
502 |
|
|
cpp_opts->warn_normalize = normalized_KC;
|
503 |
|
|
else if (strcasecmp (arg, "id") == 0)
|
504 |
|
|
cpp_opts->warn_normalize = normalized_identifier_C;
|
505 |
|
|
else if (strcasecmp (arg, "nfc") == 0)
|
506 |
|
|
cpp_opts->warn_normalize = normalized_C;
|
507 |
|
|
else
|
508 |
|
|
error ("argument %qs to %<-Wnormalized%> not recognized", arg);
|
509 |
|
|
break;
|
510 |
|
|
}
|
511 |
|
|
|
512 |
|
|
case OPT_Wreturn_type:
|
513 |
|
|
warn_return_type = value;
|
514 |
|
|
break;
|
515 |
|
|
|
516 |
|
|
case OPT_Wtraditional:
|
517 |
|
|
cpp_opts->cpp_warn_traditional = value;
|
518 |
|
|
break;
|
519 |
|
|
|
520 |
|
|
case OPT_Wtrigraphs:
|
521 |
|
|
cpp_opts->warn_trigraphs = value;
|
522 |
|
|
break;
|
523 |
|
|
|
524 |
|
|
case OPT_Wundef:
|
525 |
|
|
cpp_opts->warn_undef = value;
|
526 |
|
|
break;
|
527 |
|
|
|
528 |
|
|
case OPT_Wunknown_pragmas:
|
529 |
|
|
/* Set to greater than 1, so that even unknown pragmas in
|
530 |
|
|
system headers will be warned about. */
|
531 |
|
|
warn_unknown_pragmas = value * 2;
|
532 |
|
|
break;
|
533 |
|
|
|
534 |
|
|
case OPT_Wunused_macros:
|
535 |
|
|
warn_unused_macros = value;
|
536 |
|
|
break;
|
537 |
|
|
|
538 |
|
|
case OPT_Wvariadic_macros:
|
539 |
|
|
warn_variadic_macros = value;
|
540 |
|
|
break;
|
541 |
|
|
|
542 |
|
|
case OPT_Wwrite_strings:
|
543 |
|
|
warn_write_strings = value;
|
544 |
|
|
break;
|
545 |
|
|
|
546 |
|
|
case OPT_Weffc__:
|
547 |
|
|
warn_ecpp = value;
|
548 |
|
|
if (value)
|
549 |
|
|
warn_nonvdtor = true;
|
550 |
|
|
break;
|
551 |
|
|
|
552 |
|
|
case OPT_ansi:
|
553 |
|
|
if (!c_dialect_cxx ())
|
554 |
|
|
set_std_c89 (false, true);
|
555 |
|
|
else
|
556 |
|
|
set_std_cxx98 (true);
|
557 |
|
|
break;
|
558 |
|
|
|
559 |
|
|
case OPT_d:
|
560 |
|
|
handle_OPT_d (arg);
|
561 |
|
|
break;
|
562 |
|
|
|
563 |
|
|
case OPT_fcond_mismatch:
|
564 |
|
|
if (!c_dialect_cxx ())
|
565 |
|
|
{
|
566 |
|
|
flag_cond_mismatch = value;
|
567 |
|
|
break;
|
568 |
|
|
}
|
569 |
|
|
warning (0, "switch %qs is no longer supported", option->opt_text);
|
570 |
|
|
break;
|
571 |
|
|
|
572 |
|
|
case OPT_fbuiltin_:
|
573 |
|
|
if (value)
|
574 |
|
|
result = false;
|
575 |
|
|
else
|
576 |
|
|
disable_builtin_function (arg);
|
577 |
|
|
break;
|
578 |
|
|
|
579 |
|
|
case OPT_fdirectives_only:
|
580 |
|
|
cpp_opts->directives_only = value;
|
581 |
|
|
break;
|
582 |
|
|
|
583 |
|
|
case OPT_fdollars_in_identifiers:
|
584 |
|
|
cpp_opts->dollars_in_ident = value;
|
585 |
|
|
break;
|
586 |
|
|
|
587 |
|
|
case OPT_ffreestanding:
|
588 |
|
|
value = !value;
|
589 |
|
|
/* Fall through.... */
|
590 |
|
|
case OPT_fhosted:
|
591 |
|
|
flag_hosted = value;
|
592 |
|
|
flag_no_builtin = !value;
|
593 |
|
|
break;
|
594 |
|
|
|
595 |
|
|
case OPT_fconstant_string_class_:
|
596 |
|
|
constant_string_class_name = arg;
|
597 |
|
|
break;
|
598 |
|
|
|
599 |
|
|
case OPT_fextended_identifiers:
|
600 |
|
|
cpp_opts->extended_identifiers = value;
|
601 |
|
|
break;
|
602 |
|
|
|
603 |
|
|
case OPT_foperator_names:
|
604 |
|
|
cpp_opts->operator_names = value;
|
605 |
|
|
break;
|
606 |
|
|
|
607 |
|
|
case OPT_fpch_deps:
|
608 |
|
|
cpp_opts->restore_pch_deps = value;
|
609 |
|
|
break;
|
610 |
|
|
|
611 |
|
|
case OPT_fpch_preprocess:
|
612 |
|
|
flag_pch_preprocess = value;
|
613 |
|
|
break;
|
614 |
|
|
|
615 |
|
|
case OPT_fpermissive:
|
616 |
|
|
flag_permissive = value;
|
617 |
|
|
global_dc->permissive = value;
|
618 |
|
|
break;
|
619 |
|
|
|
620 |
|
|
case OPT_fpreprocessed:
|
621 |
|
|
cpp_opts->preprocessed = value;
|
622 |
|
|
break;
|
623 |
|
|
|
624 |
|
|
case OPT_fdebug_cpp:
|
625 |
|
|
cpp_opts->debug = 1;
|
626 |
|
|
break;
|
627 |
|
|
|
628 |
|
|
case OPT_ftrack_macro_expansion:
|
629 |
|
|
if (value)
|
630 |
|
|
value = 2;
|
631 |
|
|
/* Fall Through. */
|
632 |
|
|
|
633 |
|
|
case OPT_ftrack_macro_expansion_:
|
634 |
|
|
if (arg && *arg != '\0')
|
635 |
|
|
cpp_opts->track_macro_expansion = value;
|
636 |
|
|
else
|
637 |
|
|
cpp_opts->track_macro_expansion = 2;
|
638 |
|
|
break;
|
639 |
|
|
|
640 |
|
|
case OPT_frepo:
|
641 |
|
|
flag_use_repository = value;
|
642 |
|
|
if (value)
|
643 |
|
|
flag_implicit_templates = 0;
|
644 |
|
|
break;
|
645 |
|
|
|
646 |
|
|
case OPT_ftabstop_:
|
647 |
|
|
/* It is documented that we silently ignore silly values. */
|
648 |
|
|
if (value >= 1 && value <= 100)
|
649 |
|
|
cpp_opts->tabstop = value;
|
650 |
|
|
break;
|
651 |
|
|
|
652 |
|
|
case OPT_fexec_charset_:
|
653 |
|
|
cpp_opts->narrow_charset = arg;
|
654 |
|
|
break;
|
655 |
|
|
|
656 |
|
|
case OPT_fwide_exec_charset_:
|
657 |
|
|
cpp_opts->wide_charset = arg;
|
658 |
|
|
break;
|
659 |
|
|
|
660 |
|
|
case OPT_finput_charset_:
|
661 |
|
|
cpp_opts->input_charset = arg;
|
662 |
|
|
break;
|
663 |
|
|
|
664 |
|
|
case OPT_ftemplate_depth_:
|
665 |
|
|
max_tinst_depth = value;
|
666 |
|
|
break;
|
667 |
|
|
|
668 |
|
|
case OPT_fvisibility_inlines_hidden:
|
669 |
|
|
visibility_options.inlines_hidden = value;
|
670 |
|
|
break;
|
671 |
|
|
|
672 |
|
|
case OPT_femit_struct_debug_baseonly:
|
673 |
|
|
set_struct_debug_option (&global_options, loc, "base");
|
674 |
|
|
break;
|
675 |
|
|
|
676 |
|
|
case OPT_femit_struct_debug_reduced:
|
677 |
|
|
set_struct_debug_option (&global_options, loc,
|
678 |
|
|
"dir:ord:sys,dir:gen:any,ind:base");
|
679 |
|
|
break;
|
680 |
|
|
|
681 |
|
|
case OPT_femit_struct_debug_detailed_:
|
682 |
|
|
set_struct_debug_option (&global_options, loc, arg);
|
683 |
|
|
break;
|
684 |
|
|
|
685 |
|
|
case OPT_idirafter:
|
686 |
|
|
add_path (xstrdup (arg), AFTER, 0, true);
|
687 |
|
|
break;
|
688 |
|
|
|
689 |
|
|
case OPT_imacros:
|
690 |
|
|
case OPT_include:
|
691 |
|
|
defer_opt (code, arg);
|
692 |
|
|
break;
|
693 |
|
|
|
694 |
|
|
case OPT_imultilib:
|
695 |
|
|
imultilib = arg;
|
696 |
|
|
break;
|
697 |
|
|
|
698 |
|
|
case OPT_iprefix:
|
699 |
|
|
iprefix = arg;
|
700 |
|
|
break;
|
701 |
|
|
|
702 |
|
|
case OPT_iquote:
|
703 |
|
|
add_path (xstrdup (arg), QUOTE, 0, true);
|
704 |
|
|
break;
|
705 |
|
|
|
706 |
|
|
case OPT_isysroot:
|
707 |
|
|
sysroot = arg;
|
708 |
|
|
break;
|
709 |
|
|
|
710 |
|
|
case OPT_isystem:
|
711 |
|
|
add_path (xstrdup (arg), SYSTEM, 0, true);
|
712 |
|
|
break;
|
713 |
|
|
|
714 |
|
|
case OPT_iwithprefix:
|
715 |
|
|
add_prefixed_path (arg, SYSTEM);
|
716 |
|
|
break;
|
717 |
|
|
|
718 |
|
|
case OPT_iwithprefixbefore:
|
719 |
|
|
add_prefixed_path (arg, BRACKET);
|
720 |
|
|
break;
|
721 |
|
|
|
722 |
|
|
case OPT_lang_asm:
|
723 |
|
|
cpp_set_lang (parse_in, CLK_ASM);
|
724 |
|
|
cpp_opts->dollars_in_ident = false;
|
725 |
|
|
break;
|
726 |
|
|
|
727 |
|
|
case OPT_nostdinc:
|
728 |
|
|
std_inc = false;
|
729 |
|
|
break;
|
730 |
|
|
|
731 |
|
|
case OPT_nostdinc__:
|
732 |
|
|
std_cxx_inc = false;
|
733 |
|
|
break;
|
734 |
|
|
|
735 |
|
|
case OPT_o:
|
736 |
|
|
if (!out_fname)
|
737 |
|
|
out_fname = arg;
|
738 |
|
|
else
|
739 |
|
|
error ("output filename specified twice");
|
740 |
|
|
break;
|
741 |
|
|
|
742 |
|
|
/* We need to handle the -pedantic switches here, rather than in
|
743 |
|
|
c_common_post_options, so that a subsequent -Wno-endif-labels
|
744 |
|
|
is not overridden. */
|
745 |
|
|
case OPT_pedantic_errors:
|
746 |
|
|
case OPT_pedantic:
|
747 |
|
|
cpp_opts->cpp_pedantic = 1;
|
748 |
|
|
cpp_opts->warn_endif_labels = 1;
|
749 |
|
|
if (warn_pointer_sign == -1)
|
750 |
|
|
warn_pointer_sign = 1;
|
751 |
|
|
if (warn_overlength_strings == -1)
|
752 |
|
|
warn_overlength_strings = 1;
|
753 |
|
|
if (warn_main == -1)
|
754 |
|
|
warn_main = 2;
|
755 |
|
|
break;
|
756 |
|
|
|
757 |
|
|
case OPT_print_objc_runtime_info:
|
758 |
|
|
print_struct_values = 1;
|
759 |
|
|
break;
|
760 |
|
|
|
761 |
|
|
case OPT_remap:
|
762 |
|
|
cpp_opts->remap = 1;
|
763 |
|
|
break;
|
764 |
|
|
|
765 |
|
|
case OPT_std_c__98:
|
766 |
|
|
case OPT_std_gnu__98:
|
767 |
|
|
if (!preprocessing_asm_p)
|
768 |
|
|
set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
|
769 |
|
|
break;
|
770 |
|
|
|
771 |
|
|
case OPT_std_c__11:
|
772 |
|
|
case OPT_std_gnu__11:
|
773 |
|
|
if (!preprocessing_asm_p)
|
774 |
|
|
set_std_cxx11 (code == OPT_std_c__11 /* ISO */);
|
775 |
|
|
break;
|
776 |
|
|
|
777 |
|
|
case OPT_std_c90:
|
778 |
|
|
case OPT_std_iso9899_199409:
|
779 |
|
|
if (!preprocessing_asm_p)
|
780 |
|
|
set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
|
781 |
|
|
break;
|
782 |
|
|
|
783 |
|
|
case OPT_std_gnu90:
|
784 |
|
|
if (!preprocessing_asm_p)
|
785 |
|
|
set_std_c89 (false /* c94 */, false /* ISO */);
|
786 |
|
|
break;
|
787 |
|
|
|
788 |
|
|
case OPT_std_c99:
|
789 |
|
|
if (!preprocessing_asm_p)
|
790 |
|
|
set_std_c99 (true /* ISO */);
|
791 |
|
|
break;
|
792 |
|
|
|
793 |
|
|
case OPT_std_gnu99:
|
794 |
|
|
if (!preprocessing_asm_p)
|
795 |
|
|
set_std_c99 (false /* ISO */);
|
796 |
|
|
break;
|
797 |
|
|
|
798 |
|
|
case OPT_std_c11:
|
799 |
|
|
if (!preprocessing_asm_p)
|
800 |
|
|
set_std_c11 (true /* ISO */);
|
801 |
|
|
break;
|
802 |
|
|
|
803 |
|
|
case OPT_std_gnu11:
|
804 |
|
|
if (!preprocessing_asm_p)
|
805 |
|
|
set_std_c11 (false /* ISO */);
|
806 |
|
|
break;
|
807 |
|
|
|
808 |
|
|
case OPT_trigraphs:
|
809 |
|
|
cpp_opts->trigraphs = 1;
|
810 |
|
|
break;
|
811 |
|
|
|
812 |
|
|
case OPT_traditional_cpp:
|
813 |
|
|
cpp_opts->traditional = 1;
|
814 |
|
|
break;
|
815 |
|
|
|
816 |
|
|
case OPT_v:
|
817 |
|
|
verbose = true;
|
818 |
|
|
break;
|
819 |
|
|
|
820 |
|
|
case OPT_Wabi:
|
821 |
|
|
warn_psabi = value;
|
822 |
|
|
break;
|
823 |
|
|
}
|
824 |
|
|
|
825 |
|
|
return result;
|
826 |
|
|
}
|
827 |
|
|
|
828 |
|
|
/* Default implementation of TARGET_HANDLE_C_OPTION. */
|
829 |
|
|
|
830 |
|
|
bool
|
831 |
|
|
default_handle_c_option (size_t code ATTRIBUTE_UNUSED,
|
832 |
|
|
const char *arg ATTRIBUTE_UNUSED,
|
833 |
|
|
int value ATTRIBUTE_UNUSED)
|
834 |
|
|
{
|
835 |
|
|
return false;
|
836 |
|
|
}
|
837 |
|
|
|
838 |
|
|
/* Post-switch processing. */
|
839 |
|
|
bool
|
840 |
|
|
c_common_post_options (const char **pfilename)
|
841 |
|
|
{
|
842 |
|
|
struct cpp_callbacks *cb;
|
843 |
|
|
|
844 |
|
|
/* Canonicalize the input and output filenames. */
|
845 |
|
|
if (in_fnames == NULL)
|
846 |
|
|
{
|
847 |
|
|
in_fnames = XNEWVEC (const char *, 1);
|
848 |
|
|
in_fnames[0] = "";
|
849 |
|
|
}
|
850 |
|
|
else if (strcmp (in_fnames[0], "-") == 0)
|
851 |
|
|
in_fnames[0] = "";
|
852 |
|
|
|
853 |
|
|
if (out_fname == NULL || !strcmp (out_fname, "-"))
|
854 |
|
|
out_fname = "";
|
855 |
|
|
|
856 |
|
|
if (cpp_opts->deps.style == DEPS_NONE)
|
857 |
|
|
check_deps_environment_vars ();
|
858 |
|
|
|
859 |
|
|
handle_deferred_opts ();
|
860 |
|
|
|
861 |
|
|
sanitize_cpp_opts ();
|
862 |
|
|
|
863 |
|
|
register_include_chains (parse_in, sysroot, iprefix, imultilib,
|
864 |
|
|
std_inc, std_cxx_inc && c_dialect_cxx (), verbose);
|
865 |
|
|
|
866 |
|
|
#ifdef C_COMMON_OVERRIDE_OPTIONS
|
867 |
|
|
/* Some machines may reject certain combinations of C
|
868 |
|
|
language-specific options. */
|
869 |
|
|
C_COMMON_OVERRIDE_OPTIONS;
|
870 |
|
|
#endif
|
871 |
|
|
|
872 |
|
|
/* Excess precision other than "fast" requires front-end
|
873 |
|
|
support. */
|
874 |
|
|
if (c_dialect_cxx ())
|
875 |
|
|
{
|
876 |
|
|
if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD
|
877 |
|
|
&& TARGET_FLT_EVAL_METHOD_NON_DEFAULT)
|
878 |
|
|
sorry ("-fexcess-precision=standard for C++");
|
879 |
|
|
flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
|
880 |
|
|
}
|
881 |
|
|
else if (flag_excess_precision_cmdline == EXCESS_PRECISION_DEFAULT)
|
882 |
|
|
flag_excess_precision_cmdline = (flag_iso
|
883 |
|
|
? EXCESS_PRECISION_STANDARD
|
884 |
|
|
: EXCESS_PRECISION_FAST);
|
885 |
|
|
|
886 |
|
|
/* By default we use C99 inline semantics in GNU99 or C99 mode. C99
|
887 |
|
|
inline semantics are not supported in GNU89 or C89 mode. */
|
888 |
|
|
if (flag_gnu89_inline == -1)
|
889 |
|
|
flag_gnu89_inline = !flag_isoc99;
|
890 |
|
|
else if (!flag_gnu89_inline && !flag_isoc99)
|
891 |
|
|
error ("-fno-gnu89-inline is only supported in GNU99 or C99 mode");
|
892 |
|
|
|
893 |
|
|
/* Default to ObjC sjlj exception handling if NeXT runtime. */
|
894 |
|
|
if (flag_objc_sjlj_exceptions < 0)
|
895 |
|
|
flag_objc_sjlj_exceptions = flag_next_runtime;
|
896 |
|
|
if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
|
897 |
|
|
flag_exceptions = 1;
|
898 |
|
|
|
899 |
|
|
/* -Wextra implies the following flags
|
900 |
|
|
unless explicitly overridden. */
|
901 |
|
|
if (warn_type_limits == -1)
|
902 |
|
|
warn_type_limits = extra_warnings;
|
903 |
|
|
if (warn_clobbered == -1)
|
904 |
|
|
warn_clobbered = extra_warnings;
|
905 |
|
|
if (warn_empty_body == -1)
|
906 |
|
|
warn_empty_body = extra_warnings;
|
907 |
|
|
if (warn_sign_compare == -1)
|
908 |
|
|
warn_sign_compare = extra_warnings;
|
909 |
|
|
if (warn_missing_field_initializers == -1)
|
910 |
|
|
warn_missing_field_initializers = extra_warnings;
|
911 |
|
|
if (warn_missing_parameter_type == -1)
|
912 |
|
|
warn_missing_parameter_type = extra_warnings;
|
913 |
|
|
if (warn_old_style_declaration == -1)
|
914 |
|
|
warn_old_style_declaration = extra_warnings;
|
915 |
|
|
if (warn_override_init == -1)
|
916 |
|
|
warn_override_init = extra_warnings;
|
917 |
|
|
if (warn_ignored_qualifiers == -1)
|
918 |
|
|
warn_ignored_qualifiers = extra_warnings;
|
919 |
|
|
|
920 |
|
|
/* -Wpointer-sign is disabled by default, but it is enabled if any
|
921 |
|
|
of -Wall or -pedantic are given. */
|
922 |
|
|
if (warn_pointer_sign == -1)
|
923 |
|
|
warn_pointer_sign = 0;
|
924 |
|
|
|
925 |
|
|
if (warn_strict_aliasing == -1)
|
926 |
|
|
warn_strict_aliasing = 0;
|
927 |
|
|
if (warn_strict_overflow == -1)
|
928 |
|
|
warn_strict_overflow = 0;
|
929 |
|
|
if (warn_jump_misses_init == -1)
|
930 |
|
|
warn_jump_misses_init = 0;
|
931 |
|
|
|
932 |
|
|
/* -Woverlength-strings is off by default, but is enabled by -pedantic.
|
933 |
|
|
It is never enabled in C++, as the minimum limit is not normative
|
934 |
|
|
in that standard. */
|
935 |
|
|
if (warn_overlength_strings == -1 || c_dialect_cxx ())
|
936 |
|
|
warn_overlength_strings = 0;
|
937 |
|
|
|
938 |
|
|
/* Wmain is enabled by default in C++ but not in C. */
|
939 |
|
|
/* Wmain is disabled by default for -ffreestanding (!flag_hosted),
|
940 |
|
|
even if -Wall was given (warn_main will be 2 if set by -Wall, 1
|
941 |
|
|
if set by -Wmain). */
|
942 |
|
|
if (warn_main == -1)
|
943 |
|
|
warn_main = (c_dialect_cxx () && flag_hosted) ? 1 : 0;
|
944 |
|
|
else if (warn_main == 2)
|
945 |
|
|
warn_main = flag_hosted ? 1 : 0;
|
946 |
|
|
|
947 |
|
|
/* In C, -Wconversion enables -Wsign-conversion (unless disabled
|
948 |
|
|
through -Wno-sign-conversion). While in C++,
|
949 |
|
|
-Wsign-conversion needs to be requested explicitly. */
|
950 |
|
|
if (warn_sign_conversion == -1)
|
951 |
|
|
warn_sign_conversion = (c_dialect_cxx ()) ? 0 : warn_conversion;
|
952 |
|
|
|
953 |
|
|
/* In C, -Wall and -Wc++-compat enable -Wenum-compare, which we do
|
954 |
|
|
in c_common_handle_option; if it has not yet been set, it is
|
955 |
|
|
disabled by default. In C++, it is enabled by default. */
|
956 |
|
|
if (warn_enum_compare == -1)
|
957 |
|
|
warn_enum_compare = c_dialect_cxx () ? 1 : 0;
|
958 |
|
|
|
959 |
|
|
/* -Wpacked-bitfield-compat is on by default for the C languages. The
|
960 |
|
|
warning is issued in stor-layout.c which is not part of the front-end so
|
961 |
|
|
we need to selectively turn it on here. */
|
962 |
|
|
if (warn_packed_bitfield_compat == -1)
|
963 |
|
|
warn_packed_bitfield_compat = 1;
|
964 |
|
|
|
965 |
|
|
/* Special format checking options don't work without -Wformat; warn if
|
966 |
|
|
they are used. */
|
967 |
|
|
if (!warn_format)
|
968 |
|
|
{
|
969 |
|
|
warning (OPT_Wformat_y2k,
|
970 |
|
|
"-Wformat-y2k ignored without -Wformat");
|
971 |
|
|
warning (OPT_Wformat_extra_args,
|
972 |
|
|
"-Wformat-extra-args ignored without -Wformat");
|
973 |
|
|
warning (OPT_Wformat_zero_length,
|
974 |
|
|
"-Wformat-zero-length ignored without -Wformat");
|
975 |
|
|
warning (OPT_Wformat_nonliteral,
|
976 |
|
|
"-Wformat-nonliteral ignored without -Wformat");
|
977 |
|
|
warning (OPT_Wformat_contains_nul,
|
978 |
|
|
"-Wformat-contains-nul ignored without -Wformat");
|
979 |
|
|
warning (OPT_Wformat_security,
|
980 |
|
|
"-Wformat-security ignored without -Wformat");
|
981 |
|
|
}
|
982 |
|
|
|
983 |
|
|
if (warn_implicit == -1)
|
984 |
|
|
warn_implicit = 0;
|
985 |
|
|
|
986 |
|
|
if (warn_implicit_int == -1)
|
987 |
|
|
warn_implicit_int = 0;
|
988 |
|
|
|
989 |
|
|
/* -Wimplicit-function-declaration is enabled by default for C99. */
|
990 |
|
|
if (warn_implicit_function_declaration == -1)
|
991 |
|
|
warn_implicit_function_declaration = flag_isoc99;
|
992 |
|
|
|
993 |
|
|
if (cxx_dialect == cxx0x)
|
994 |
|
|
{
|
995 |
|
|
/* If we're allowing C++0x constructs, don't warn about C++98
|
996 |
|
|
identifiers which are keywords in C++0x. */
|
997 |
|
|
warn_cxx0x_compat = 0;
|
998 |
|
|
|
999 |
|
|
if (warn_narrowing == -1)
|
1000 |
|
|
warn_narrowing = 1;
|
1001 |
|
|
}
|
1002 |
|
|
else if (warn_narrowing == -1)
|
1003 |
|
|
warn_narrowing = 0;
|
1004 |
|
|
|
1005 |
|
|
if (flag_preprocess_only)
|
1006 |
|
|
{
|
1007 |
|
|
/* Open the output now. We must do so even if flag_no_output is
|
1008 |
|
|
on, because there may be other output than from the actual
|
1009 |
|
|
preprocessing (e.g. from -dM). */
|
1010 |
|
|
if (out_fname[0] == '\0')
|
1011 |
|
|
out_stream = stdout;
|
1012 |
|
|
else
|
1013 |
|
|
out_stream = fopen (out_fname, "w");
|
1014 |
|
|
|
1015 |
|
|
if (out_stream == NULL)
|
1016 |
|
|
{
|
1017 |
|
|
fatal_error ("opening output file %s: %m", out_fname);
|
1018 |
|
|
return false;
|
1019 |
|
|
}
|
1020 |
|
|
|
1021 |
|
|
if (num_in_fnames > 1)
|
1022 |
|
|
error ("too many filenames given. Type %s --help for usage",
|
1023 |
|
|
progname);
|
1024 |
|
|
|
1025 |
|
|
init_pp_output (out_stream);
|
1026 |
|
|
}
|
1027 |
|
|
else
|
1028 |
|
|
{
|
1029 |
|
|
init_c_lex ();
|
1030 |
|
|
|
1031 |
|
|
/* When writing a PCH file, avoid reading some other PCH file,
|
1032 |
|
|
because the default address space slot then can't be used
|
1033 |
|
|
for the output PCH file. */
|
1034 |
|
|
if (pch_file)
|
1035 |
|
|
c_common_no_more_pch ();
|
1036 |
|
|
|
1037 |
|
|
/* Yuk. WTF is this? I do know ObjC relies on it somewhere. */
|
1038 |
|
|
input_location = UNKNOWN_LOCATION;
|
1039 |
|
|
}
|
1040 |
|
|
|
1041 |
|
|
cb = cpp_get_callbacks (parse_in);
|
1042 |
|
|
cb->file_change = cb_file_change;
|
1043 |
|
|
cb->dir_change = cb_dir_change;
|
1044 |
|
|
cpp_post_options (parse_in);
|
1045 |
|
|
|
1046 |
|
|
input_location = UNKNOWN_LOCATION;
|
1047 |
|
|
|
1048 |
|
|
*pfilename = this_input_filename
|
1049 |
|
|
= cpp_read_main_file (parse_in, in_fnames[0]);
|
1050 |
|
|
/* Don't do any compilation or preprocessing if there is no input file. */
|
1051 |
|
|
if (this_input_filename == NULL)
|
1052 |
|
|
{
|
1053 |
|
|
errorcount++;
|
1054 |
|
|
return false;
|
1055 |
|
|
}
|
1056 |
|
|
|
1057 |
|
|
if (flag_working_directory
|
1058 |
|
|
&& flag_preprocess_only && !flag_no_line_commands)
|
1059 |
|
|
pp_dir_change (parse_in, get_src_pwd ());
|
1060 |
|
|
|
1061 |
|
|
/* Disable LTO output when outputting a precompiled header. */
|
1062 |
|
|
if (pch_file && flag_lto)
|
1063 |
|
|
{
|
1064 |
|
|
flag_lto = 0;
|
1065 |
|
|
flag_generate_lto = 0;
|
1066 |
|
|
}
|
1067 |
|
|
|
1068 |
|
|
return flag_preprocess_only;
|
1069 |
|
|
}
|
1070 |
|
|
|
1071 |
|
|
/* Front end initialization common to C, ObjC and C++. */
|
1072 |
|
|
bool
|
1073 |
|
|
c_common_init (void)
|
1074 |
|
|
{
|
1075 |
|
|
/* Set up preprocessor arithmetic. Must be done after call to
|
1076 |
|
|
c_common_nodes_and_builtins for type nodes to be good. */
|
1077 |
|
|
cpp_opts->precision = TYPE_PRECISION (intmax_type_node);
|
1078 |
|
|
cpp_opts->char_precision = TYPE_PRECISION (char_type_node);
|
1079 |
|
|
cpp_opts->int_precision = TYPE_PRECISION (integer_type_node);
|
1080 |
|
|
cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node);
|
1081 |
|
|
cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node);
|
1082 |
|
|
cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN;
|
1083 |
|
|
|
1084 |
|
|
/* This can't happen until after wchar_precision and bytes_big_endian
|
1085 |
|
|
are known. */
|
1086 |
|
|
cpp_init_iconv (parse_in);
|
1087 |
|
|
|
1088 |
|
|
if (version_flag)
|
1089 |
|
|
c_common_print_pch_checksum (stderr);
|
1090 |
|
|
|
1091 |
|
|
/* Has to wait until now so that cpplib has its hash table. */
|
1092 |
|
|
init_pragma ();
|
1093 |
|
|
|
1094 |
|
|
if (flag_preprocess_only)
|
1095 |
|
|
{
|
1096 |
|
|
c_finish_options ();
|
1097 |
|
|
preprocess_file (parse_in);
|
1098 |
|
|
return false;
|
1099 |
|
|
}
|
1100 |
|
|
|
1101 |
|
|
return true;
|
1102 |
|
|
}
|
1103 |
|
|
|
1104 |
|
|
/* Initialize the integrated preprocessor after debug output has been
|
1105 |
|
|
initialized; loop over each input file. */
|
1106 |
|
|
void
|
1107 |
|
|
c_common_parse_file (void)
|
1108 |
|
|
{
|
1109 |
|
|
unsigned int i;
|
1110 |
|
|
|
1111 |
|
|
i = 0;
|
1112 |
|
|
for (;;)
|
1113 |
|
|
{
|
1114 |
|
|
c_finish_options ();
|
1115 |
|
|
pch_init ();
|
1116 |
|
|
push_file_scope ();
|
1117 |
|
|
c_parse_file ();
|
1118 |
|
|
pop_file_scope ();
|
1119 |
|
|
/* And end the main input file, if the debug writer wants it */
|
1120 |
|
|
if (debug_hooks->start_end_main_source_file)
|
1121 |
|
|
(*debug_hooks->end_source_file) (0);
|
1122 |
|
|
if (++i >= num_in_fnames)
|
1123 |
|
|
break;
|
1124 |
|
|
cpp_undef_all (parse_in);
|
1125 |
|
|
cpp_clear_file_cache (parse_in);
|
1126 |
|
|
this_input_filename
|
1127 |
|
|
= cpp_read_main_file (parse_in, in_fnames[i]);
|
1128 |
|
|
/* If an input file is missing, abandon further compilation.
|
1129 |
|
|
cpplib has issued a diagnostic. */
|
1130 |
|
|
if (!this_input_filename)
|
1131 |
|
|
break;
|
1132 |
|
|
}
|
1133 |
|
|
}
|
1134 |
|
|
|
1135 |
|
|
/* Common finish hook for the C, ObjC and C++ front ends. */
|
1136 |
|
|
void
|
1137 |
|
|
c_common_finish (void)
|
1138 |
|
|
{
|
1139 |
|
|
FILE *deps_stream = NULL;
|
1140 |
|
|
|
1141 |
|
|
/* Don't write the deps file if there are errors. */
|
1142 |
|
|
if (cpp_opts->deps.style != DEPS_NONE && !seen_error ())
|
1143 |
|
|
{
|
1144 |
|
|
/* If -M or -MM was seen without -MF, default output to the
|
1145 |
|
|
output stream. */
|
1146 |
|
|
if (!deps_file)
|
1147 |
|
|
deps_stream = out_stream;
|
1148 |
|
|
else
|
1149 |
|
|
{
|
1150 |
|
|
deps_stream = fopen (deps_file, deps_append ? "a": "w");
|
1151 |
|
|
if (!deps_stream)
|
1152 |
|
|
fatal_error ("opening dependency file %s: %m", deps_file);
|
1153 |
|
|
}
|
1154 |
|
|
}
|
1155 |
|
|
|
1156 |
|
|
/* For performance, avoid tearing down cpplib's internal structures
|
1157 |
|
|
with cpp_destroy (). */
|
1158 |
|
|
cpp_finish (parse_in, deps_stream);
|
1159 |
|
|
|
1160 |
|
|
if (deps_stream && deps_stream != out_stream
|
1161 |
|
|
&& (ferror (deps_stream) || fclose (deps_stream)))
|
1162 |
|
|
fatal_error ("closing dependency file %s: %m", deps_file);
|
1163 |
|
|
|
1164 |
|
|
if (out_stream && (ferror (out_stream) || fclose (out_stream)))
|
1165 |
|
|
fatal_error ("when writing output to %s: %m", out_fname);
|
1166 |
|
|
}
|
1167 |
|
|
|
1168 |
|
|
/* Either of two environment variables can specify output of
|
1169 |
|
|
dependencies. Their value is either "OUTPUT_FILE" or "OUTPUT_FILE
|
1170 |
|
|
DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to
|
1171 |
|
|
and DEPS_TARGET is the target to mention in the deps. They also
|
1172 |
|
|
result in dependency information being appended to the output file
|
1173 |
|
|
rather than overwriting it, and like Sun's compiler
|
1174 |
|
|
SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */
|
1175 |
|
|
static void
|
1176 |
|
|
check_deps_environment_vars (void)
|
1177 |
|
|
{
|
1178 |
|
|
char *spec;
|
1179 |
|
|
|
1180 |
|
|
spec = getenv ("DEPENDENCIES_OUTPUT");
|
1181 |
|
|
if (spec)
|
1182 |
|
|
cpp_opts->deps.style = DEPS_USER;
|
1183 |
|
|
else
|
1184 |
|
|
{
|
1185 |
|
|
spec = getenv ("SUNPRO_DEPENDENCIES");
|
1186 |
|
|
if (spec)
|
1187 |
|
|
{
|
1188 |
|
|
cpp_opts->deps.style = DEPS_SYSTEM;
|
1189 |
|
|
cpp_opts->deps.ignore_main_file = true;
|
1190 |
|
|
}
|
1191 |
|
|
}
|
1192 |
|
|
|
1193 |
|
|
if (spec)
|
1194 |
|
|
{
|
1195 |
|
|
/* Find the space before the DEPS_TARGET, if there is one. */
|
1196 |
|
|
char *s = strchr (spec, ' ');
|
1197 |
|
|
if (s)
|
1198 |
|
|
{
|
1199 |
|
|
/* Let the caller perform MAKE quoting. */
|
1200 |
|
|
defer_opt (OPT_MT, s + 1);
|
1201 |
|
|
*s = '\0';
|
1202 |
|
|
}
|
1203 |
|
|
|
1204 |
|
|
/* Command line -MF overrides environment variables and default. */
|
1205 |
|
|
if (!deps_file)
|
1206 |
|
|
deps_file = spec;
|
1207 |
|
|
|
1208 |
|
|
deps_append = 1;
|
1209 |
|
|
deps_seen = true;
|
1210 |
|
|
}
|
1211 |
|
|
}
|
1212 |
|
|
|
1213 |
|
|
/* Handle deferred command line switches. */
|
1214 |
|
|
static void
|
1215 |
|
|
handle_deferred_opts (void)
|
1216 |
|
|
{
|
1217 |
|
|
size_t i;
|
1218 |
|
|
struct deps *deps;
|
1219 |
|
|
|
1220 |
|
|
/* Avoid allocating the deps buffer if we don't need it.
|
1221 |
|
|
(This flag may be true without there having been -MT or -MQ
|
1222 |
|
|
options, but we'll still need the deps buffer.) */
|
1223 |
|
|
if (!deps_seen)
|
1224 |
|
|
return;
|
1225 |
|
|
|
1226 |
|
|
deps = cpp_get_deps (parse_in);
|
1227 |
|
|
|
1228 |
|
|
for (i = 0; i < deferred_count; i++)
|
1229 |
|
|
{
|
1230 |
|
|
struct deferred_opt *opt = &deferred_opts[i];
|
1231 |
|
|
|
1232 |
|
|
if (opt->code == OPT_MT || opt->code == OPT_MQ)
|
1233 |
|
|
deps_add_target (deps, opt->arg, opt->code == OPT_MQ);
|
1234 |
|
|
}
|
1235 |
|
|
}
|
1236 |
|
|
|
1237 |
|
|
/* These settings are appropriate for GCC, but not necessarily so for
|
1238 |
|
|
cpplib as a library. */
|
1239 |
|
|
static void
|
1240 |
|
|
sanitize_cpp_opts (void)
|
1241 |
|
|
{
|
1242 |
|
|
/* If we don't know what style of dependencies to output, complain
|
1243 |
|
|
if any other dependency switches have been given. */
|
1244 |
|
|
if (deps_seen && cpp_opts->deps.style == DEPS_NONE)
|
1245 |
|
|
error ("to generate dependencies you must specify either -M or -MM");
|
1246 |
|
|
|
1247 |
|
|
/* -dM and dependencies suppress normal output; do it here so that
|
1248 |
|
|
the last -d[MDN] switch overrides earlier ones. */
|
1249 |
|
|
if (flag_dump_macros == 'M')
|
1250 |
|
|
flag_no_output = 1;
|
1251 |
|
|
|
1252 |
|
|
/* By default, -fdirectives-only implies -dD. This allows subsequent phases
|
1253 |
|
|
to perform proper macro expansion. */
|
1254 |
|
|
if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros)
|
1255 |
|
|
flag_dump_macros = 'D';
|
1256 |
|
|
|
1257 |
|
|
/* Disable -dD, -dN and -dI if normal output is suppressed. Allow
|
1258 |
|
|
-dM since at least glibc relies on -M -dM to work. */
|
1259 |
|
|
/* Also, flag_no_output implies flag_no_line_commands, always. */
|
1260 |
|
|
if (flag_no_output)
|
1261 |
|
|
{
|
1262 |
|
|
if (flag_dump_macros != 'M')
|
1263 |
|
|
flag_dump_macros = 0;
|
1264 |
|
|
flag_dump_includes = 0;
|
1265 |
|
|
flag_no_line_commands = 1;
|
1266 |
|
|
}
|
1267 |
|
|
else if (cpp_opts->deps.missing_files)
|
1268 |
|
|
error ("-MG may only be used with -M or -MM");
|
1269 |
|
|
|
1270 |
|
|
cpp_opts->unsigned_char = !flag_signed_char;
|
1271 |
|
|
cpp_opts->stdc_0_in_system_headers = STDC_0_IN_SYSTEM_HEADERS;
|
1272 |
|
|
|
1273 |
|
|
/* Wlong-long is disabled by default. It is enabled by:
|
1274 |
|
|
[-pedantic | -Wtraditional] -std=[gnu|c]++98 ; or
|
1275 |
|
|
[-pedantic | -Wtraditional] -std=non-c99 .
|
1276 |
|
|
|
1277 |
|
|
Either -Wlong-long or -Wno-long-long override any other settings. */
|
1278 |
|
|
if (warn_long_long == -1)
|
1279 |
|
|
warn_long_long = ((pedantic || warn_traditional)
|
1280 |
|
|
&& (c_dialect_cxx () ? cxx_dialect == cxx98 : !flag_isoc99));
|
1281 |
|
|
cpp_opts->cpp_warn_long_long = warn_long_long;
|
1282 |
|
|
|
1283 |
|
|
/* Similarly with -Wno-variadic-macros. No check for c99 here, since
|
1284 |
|
|
this also turns off warnings about GCCs extension. */
|
1285 |
|
|
cpp_opts->warn_variadic_macros
|
1286 |
|
|
= warn_variadic_macros && (pedantic || warn_traditional);
|
1287 |
|
|
|
1288 |
|
|
/* If we're generating preprocessor output, emit current directory
|
1289 |
|
|
if explicitly requested or if debugging information is enabled.
|
1290 |
|
|
??? Maybe we should only do it for debugging formats that
|
1291 |
|
|
actually output the current directory? */
|
1292 |
|
|
if (flag_working_directory == -1)
|
1293 |
|
|
flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE);
|
1294 |
|
|
|
1295 |
|
|
if (cpp_opts->directives_only)
|
1296 |
|
|
{
|
1297 |
|
|
if (warn_unused_macros)
|
1298 |
|
|
error ("-fdirectives-only is incompatible with -Wunused_macros");
|
1299 |
|
|
if (cpp_opts->traditional)
|
1300 |
|
|
error ("-fdirectives-only is incompatible with -traditional");
|
1301 |
|
|
}
|
1302 |
|
|
}
|
1303 |
|
|
|
1304 |
|
|
/* Add include path with a prefix at the front of its name. */
|
1305 |
|
|
static void
|
1306 |
|
|
add_prefixed_path (const char *suffix, size_t chain)
|
1307 |
|
|
{
|
1308 |
|
|
char *path;
|
1309 |
|
|
const char *prefix;
|
1310 |
|
|
size_t prefix_len, suffix_len;
|
1311 |
|
|
|
1312 |
|
|
suffix_len = strlen (suffix);
|
1313 |
|
|
prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR;
|
1314 |
|
|
prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len;
|
1315 |
|
|
|
1316 |
|
|
path = (char *) xmalloc (prefix_len + suffix_len + 1);
|
1317 |
|
|
memcpy (path, prefix, prefix_len);
|
1318 |
|
|
memcpy (path + prefix_len, suffix, suffix_len);
|
1319 |
|
|
path[prefix_len + suffix_len] = '\0';
|
1320 |
|
|
|
1321 |
|
|
add_path (path, chain, 0, false);
|
1322 |
|
|
}
|
1323 |
|
|
|
1324 |
|
|
/* Handle -D, -U, -A, -imacros, and the first -include. */
|
1325 |
|
|
static void
|
1326 |
|
|
c_finish_options (void)
|
1327 |
|
|
{
|
1328 |
|
|
if (!cpp_opts->preprocessed)
|
1329 |
|
|
{
|
1330 |
|
|
size_t i;
|
1331 |
|
|
|
1332 |
|
|
{
|
1333 |
|
|
/* Make sure all of the builtins about to be declared have
|
1334 |
|
|
BUILTINS_LOCATION has their source_location. */
|
1335 |
|
|
source_location builtins_loc = BUILTINS_LOCATION;
|
1336 |
|
|
cpp_force_token_locations (parse_in, &builtins_loc);
|
1337 |
|
|
|
1338 |
|
|
cpp_init_builtins (parse_in, flag_hosted);
|
1339 |
|
|
c_cpp_builtins (parse_in);
|
1340 |
|
|
|
1341 |
|
|
cpp_stop_forcing_token_locations (parse_in);
|
1342 |
|
|
}
|
1343 |
|
|
|
1344 |
|
|
/* We're about to send user input to cpplib, so make it warn for
|
1345 |
|
|
things that we previously (when we sent it internal definitions)
|
1346 |
|
|
told it to not warn.
|
1347 |
|
|
|
1348 |
|
|
C99 permits implementation-defined characters in identifiers.
|
1349 |
|
|
The documented meaning of -std= is to turn off extensions that
|
1350 |
|
|
conflict with the specified standard, and since a strictly
|
1351 |
|
|
conforming program cannot contain a '$', we do not condition
|
1352 |
|
|
their acceptance on the -std= setting. */
|
1353 |
|
|
cpp_opts->warn_dollars = (cpp_opts->cpp_pedantic && !cpp_opts->c99);
|
1354 |
|
|
|
1355 |
|
|
cb_file_change (parse_in,
|
1356 |
|
|
linemap_add (line_table, LC_RENAME, 0,
|
1357 |
|
|
_("<command-line>"), 0));
|
1358 |
|
|
|
1359 |
|
|
for (i = 0; i < deferred_count; i++)
|
1360 |
|
|
{
|
1361 |
|
|
struct deferred_opt *opt = &deferred_opts[i];
|
1362 |
|
|
|
1363 |
|
|
if (opt->code == OPT_D)
|
1364 |
|
|
cpp_define (parse_in, opt->arg);
|
1365 |
|
|
else if (opt->code == OPT_U)
|
1366 |
|
|
cpp_undef (parse_in, opt->arg);
|
1367 |
|
|
else if (opt->code == OPT_A)
|
1368 |
|
|
{
|
1369 |
|
|
if (opt->arg[0] == '-')
|
1370 |
|
|
cpp_unassert (parse_in, opt->arg + 1);
|
1371 |
|
|
else
|
1372 |
|
|
cpp_assert (parse_in, opt->arg);
|
1373 |
|
|
}
|
1374 |
|
|
}
|
1375 |
|
|
|
1376 |
|
|
/* Start the main input file, if the debug writer wants it. */
|
1377 |
|
|
if (debug_hooks->start_end_main_source_file
|
1378 |
|
|
&& !flag_preprocess_only)
|
1379 |
|
|
(*debug_hooks->start_source_file) (0, this_input_filename);
|
1380 |
|
|
|
1381 |
|
|
/* Handle -imacros after -D and -U. */
|
1382 |
|
|
for (i = 0; i < deferred_count; i++)
|
1383 |
|
|
{
|
1384 |
|
|
struct deferred_opt *opt = &deferred_opts[i];
|
1385 |
|
|
|
1386 |
|
|
if (opt->code == OPT_imacros
|
1387 |
|
|
&& cpp_push_include (parse_in, opt->arg))
|
1388 |
|
|
{
|
1389 |
|
|
/* Disable push_command_line_include callback for now. */
|
1390 |
|
|
include_cursor = deferred_count + 1;
|
1391 |
|
|
cpp_scan_nooutput (parse_in);
|
1392 |
|
|
}
|
1393 |
|
|
}
|
1394 |
|
|
}
|
1395 |
|
|
else
|
1396 |
|
|
{
|
1397 |
|
|
if (cpp_opts->directives_only)
|
1398 |
|
|
cpp_init_special_builtins (parse_in);
|
1399 |
|
|
|
1400 |
|
|
/* Start the main input file, if the debug writer wants it. */
|
1401 |
|
|
if (debug_hooks->start_end_main_source_file
|
1402 |
|
|
&& !flag_preprocess_only)
|
1403 |
|
|
(*debug_hooks->start_source_file) (0, this_input_filename);
|
1404 |
|
|
}
|
1405 |
|
|
|
1406 |
|
|
include_cursor = 0;
|
1407 |
|
|
push_command_line_include ();
|
1408 |
|
|
}
|
1409 |
|
|
|
1410 |
|
|
/* Give CPP the next file given by -include, if any. */
|
1411 |
|
|
static void
|
1412 |
|
|
push_command_line_include (void)
|
1413 |
|
|
{
|
1414 |
|
|
while (include_cursor < deferred_count)
|
1415 |
|
|
{
|
1416 |
|
|
struct deferred_opt *opt = &deferred_opts[include_cursor++];
|
1417 |
|
|
|
1418 |
|
|
if (!cpp_opts->preprocessed && opt->code == OPT_include
|
1419 |
|
|
&& cpp_push_include (parse_in, opt->arg))
|
1420 |
|
|
return;
|
1421 |
|
|
}
|
1422 |
|
|
|
1423 |
|
|
if (include_cursor == deferred_count)
|
1424 |
|
|
{
|
1425 |
|
|
include_cursor++;
|
1426 |
|
|
/* -Wunused-macros should only warn about macros defined hereafter. */
|
1427 |
|
|
cpp_opts->warn_unused_macros = warn_unused_macros;
|
1428 |
|
|
/* Restore the line map from <command line>. */
|
1429 |
|
|
if (!cpp_opts->preprocessed)
|
1430 |
|
|
cpp_change_file (parse_in, LC_RENAME, this_input_filename);
|
1431 |
|
|
|
1432 |
|
|
/* Set this here so the client can change the option if it wishes,
|
1433 |
|
|
and after stacking the main file so we don't trace the main file. */
|
1434 |
|
|
line_table->trace_includes = cpp_opts->print_include_names;
|
1435 |
|
|
}
|
1436 |
|
|
}
|
1437 |
|
|
|
1438 |
|
|
/* File change callback. Has to handle -include files. */
|
1439 |
|
|
static void
|
1440 |
|
|
cb_file_change (cpp_reader * ARG_UNUSED (pfile),
|
1441 |
|
|
const struct line_map *new_map)
|
1442 |
|
|
{
|
1443 |
|
|
if (flag_preprocess_only)
|
1444 |
|
|
pp_file_change (new_map);
|
1445 |
|
|
else
|
1446 |
|
|
fe_file_change (new_map);
|
1447 |
|
|
|
1448 |
|
|
if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map)))
|
1449 |
|
|
push_command_line_include ();
|
1450 |
|
|
}
|
1451 |
|
|
|
1452 |
|
|
void
|
1453 |
|
|
cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir)
|
1454 |
|
|
{
|
1455 |
|
|
if (!set_src_pwd (dir))
|
1456 |
|
|
warning (0, "too late for # directive to set debug directory");
|
1457 |
|
|
}
|
1458 |
|
|
|
1459 |
|
|
/* Set the C 89 standard (with 1994 amendments if C94, without GNU
|
1460 |
|
|
extensions if ISO). There is no concept of gnu94. */
|
1461 |
|
|
static void
|
1462 |
|
|
set_std_c89 (int c94, int iso)
|
1463 |
|
|
{
|
1464 |
|
|
cpp_set_lang (parse_in, c94 ? CLK_STDC94: iso ? CLK_STDC89: CLK_GNUC89);
|
1465 |
|
|
flag_iso = iso;
|
1466 |
|
|
flag_no_asm = iso;
|
1467 |
|
|
flag_no_gnu_keywords = iso;
|
1468 |
|
|
flag_no_nonansi_builtin = iso;
|
1469 |
|
|
flag_isoc94 = c94;
|
1470 |
|
|
flag_isoc99 = 0;
|
1471 |
|
|
flag_isoc11 = 0;
|
1472 |
|
|
}
|
1473 |
|
|
|
1474 |
|
|
/* Set the C 99 standard (without GNU extensions if ISO). */
|
1475 |
|
|
static void
|
1476 |
|
|
set_std_c99 (int iso)
|
1477 |
|
|
{
|
1478 |
|
|
cpp_set_lang (parse_in, iso ? CLK_STDC99: CLK_GNUC99);
|
1479 |
|
|
flag_no_asm = iso;
|
1480 |
|
|
flag_no_nonansi_builtin = iso;
|
1481 |
|
|
flag_iso = iso;
|
1482 |
|
|
flag_isoc11 = 0;
|
1483 |
|
|
flag_isoc99 = 1;
|
1484 |
|
|
flag_isoc94 = 1;
|
1485 |
|
|
}
|
1486 |
|
|
|
1487 |
|
|
/* Set the C 11 standard (without GNU extensions if ISO). */
|
1488 |
|
|
static void
|
1489 |
|
|
set_std_c11 (int iso)
|
1490 |
|
|
{
|
1491 |
|
|
cpp_set_lang (parse_in, iso ? CLK_STDC11: CLK_GNUC11);
|
1492 |
|
|
flag_no_asm = iso;
|
1493 |
|
|
flag_no_nonansi_builtin = iso;
|
1494 |
|
|
flag_iso = iso;
|
1495 |
|
|
flag_isoc11 = 1;
|
1496 |
|
|
flag_isoc99 = 1;
|
1497 |
|
|
flag_isoc94 = 1;
|
1498 |
|
|
}
|
1499 |
|
|
|
1500 |
|
|
/* Set the C++ 98 standard (without GNU extensions if ISO). */
|
1501 |
|
|
static void
|
1502 |
|
|
set_std_cxx98 (int iso)
|
1503 |
|
|
{
|
1504 |
|
|
cpp_set_lang (parse_in, iso ? CLK_CXX98: CLK_GNUCXX);
|
1505 |
|
|
flag_no_gnu_keywords = iso;
|
1506 |
|
|
flag_no_nonansi_builtin = iso;
|
1507 |
|
|
flag_iso = iso;
|
1508 |
|
|
cxx_dialect = cxx98;
|
1509 |
|
|
}
|
1510 |
|
|
|
1511 |
|
|
/* Set the C++ 2011 standard (without GNU extensions if ISO). */
|
1512 |
|
|
static void
|
1513 |
|
|
set_std_cxx11 (int iso)
|
1514 |
|
|
{
|
1515 |
|
|
cpp_set_lang (parse_in, iso ? CLK_CXX11: CLK_GNUCXX11);
|
1516 |
|
|
flag_no_gnu_keywords = iso;
|
1517 |
|
|
flag_no_nonansi_builtin = iso;
|
1518 |
|
|
flag_iso = iso;
|
1519 |
|
|
/* C++11 includes the C99 standard library. */
|
1520 |
|
|
flag_isoc94 = 1;
|
1521 |
|
|
flag_isoc99 = 1;
|
1522 |
|
|
cxx_dialect = cxx11;
|
1523 |
|
|
}
|
1524 |
|
|
|
1525 |
|
|
/* Args to -d specify what to dump. Silently ignore
|
1526 |
|
|
unrecognized options; they may be aimed at toplev.c. */
|
1527 |
|
|
static void
|
1528 |
|
|
handle_OPT_d (const char *arg)
|
1529 |
|
|
{
|
1530 |
|
|
char c;
|
1531 |
|
|
|
1532 |
|
|
while ((c = *arg++) != '\0')
|
1533 |
|
|
switch (c)
|
1534 |
|
|
{
|
1535 |
|
|
case 'M': /* Dump macros only. */
|
1536 |
|
|
case 'N': /* Dump names. */
|
1537 |
|
|
case 'D': /* Dump definitions. */
|
1538 |
|
|
case 'U': /* Dump used macros. */
|
1539 |
|
|
flag_dump_macros = c;
|
1540 |
|
|
break;
|
1541 |
|
|
|
1542 |
|
|
case 'I':
|
1543 |
|
|
flag_dump_includes = 1;
|
1544 |
|
|
break;
|
1545 |
|
|
}
|
1546 |
|
|
}
|