/* C/ObjC/C++ command line option handling.
- Copyright (C) 2002 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.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "tree.h"
#include "c-common.h"
#include "c-pragma.h"
#include "tree-inline.h"
#include "diagnostic.h"
#include "intl.h"
+#include "cppdefault.h"
+#include "c-incpath.h"
+#include "debug.h" /* For debug_hooks. */
+#include "opts.h"
+#include "options.h"
+#include "mkdeps.h"
+#include "target.h"
+#include "tm_p.h"
+
+#ifndef DOLLARS_IN_IDENTIFIERS
+# define DOLLARS_IN_IDENTIFIERS true
+#endif
+
+#ifndef TARGET_SYSTEM_ROOT
+# define TARGET_SYSTEM_ROOT NULL
+#endif
+
+#ifndef TARGET_OPTF
+#define TARGET_OPTF(ARG)
+#endif
/* CPP's options. */
static cpp_options *cpp_opts;
/* Input filename. */
-static const char *in_fname;
+static const char *this_input_filename;
/* Filename and stream for preprocessed output. */
static const char *out_fname;
/* If dependency switches (-MF etc.) have been given. */
static bool deps_seen;
+/* If -v seen. */
+static bool verbose;
+
+/* If -lang-fortran seen. */
+bool lang_fortran = false;
+
/* Dependency output file. */
static const char *deps_file;
-/* Number of deferred options, deferred options array size. */
-static size_t deferred_count, deferred_size;
-
-static void missing_arg PARAMS ((size_t));
-static size_t find_opt PARAMS ((const char *, int));
-static void set_Wimplicit PARAMS ((int));
-static void complain_wrong_lang PARAMS ((size_t));
-static void write_langs PARAMS ((char *, int));
-static void print_help PARAMS ((void));
-static void handle_OPT_d PARAMS ((const char *));
-static void set_std_cxx98 PARAMS ((int));
-static void set_std_c89 PARAMS ((int, int));
-static void set_std_c99 PARAMS ((int));
-static void check_deps_environment_vars PARAMS ((void));
-static void preprocess_file PARAMS ((void));
-static void handle_deferred_opts PARAMS ((void));
-static void sanitize_cpp_opts PARAMS ((void));
+/* 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;
+
+/* Zero disables all standard directories for headers. */
+static bool std_inc = true;
+
+/* Zero disables the C++-specific standard directories for headers. */
+static bool std_cxx_inc = true;
+
+/* If the quote chain has been split by -I-. */
+static bool quote_chain_split;
+
+/* 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;
+
+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 handle_deferred_opts (void);
+static void sanitize_cpp_opts (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 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
#endif
-#define CL_C_ONLY (1 << 0) /* Only C. */
-#define CL_OBJC_ONLY (1 << 1) /* Only ObjC. */
-#define CL_CXX_ONLY (1 << 2) /* Only C++. */
-#define CL_OBJCXX_ONLY (1 << 3) /* Only ObjC++. */
-#define CL_JOINED (1 << 4) /* If takes joined argument. */
-#define CL_SEPARATE (1 << 5) /* If takes a separate argument. */
-
-#define CL_ARG (CL_JOINED | CL_SEPARATE)
-#define CL_C (CL_C_ONLY | CL_OBJC_ONLY)
-#define CL_OBJC (CL_OBJC_ONLY | CL_OBJCXX_ONLY)
-#define CL_CXX (CL_CXX_ONLY | CL_OBJCXX_ONLY)
-#define CL_ALL (CL_C | CL_CXX)
-
-/* This is the list of all command line options, with the leading "-"
- removed. It must be sorted in ASCII collating order. All options
- beginning with "f" or "W" are implicitly assumed to take a "no-"
- form; this form should not be listed. The variable "on" is true if
- the positive form is given, otherwise it is false. If you don't
- want to allow a "no-" form, your handler should reject "on" being
- false by returning zero. See, for example, the handling of
- -ftabstop=.
-
- If the user gives an option to a front end that doesn't support it,
- an error is output, mentioning which front ends the option is valid
- for. If you don't want this, you must accept it for all front
- ends, and test for the front end in the option handler. See, for
- example, the handling of -Wno-strict-prototypes for C++.
-
- If you request an argument with CL_JOINED, CL_SEPARATE or their
- combination CL_ARG, it is stored in the variable "arg", which is
- guaranteed to be non-NULL and to not be an empty string. It points
- to the argument either within the argv[] vector or within one of
- that vector's strings, and so the text is permanent and copies need
- not be made. Be sure to add an error message in missing_arg() if
- the default is not appropriate. */
-
-#define COMMAND_LINE_OPTIONS \
- OPT("-help", CL_ALL, OPT__help) \
- OPT("C", CL_ALL, OPT_C) \
- OPT("CC", CL_ALL, OPT_CC) \
- OPT("E", CL_ALL, OPT_E) \
- OPT("H", CL_ALL, OPT_H) \
- OPT("M", CL_ALL, OPT_M) \
- OPT("MD", CL_ALL | CL_SEPARATE, OPT_MD) \
- OPT("MF", CL_ALL | CL_ARG, OPT_MF) \
- OPT("MG", CL_ALL, OPT_MG) \
- OPT("MM", CL_ALL, OPT_MM) \
- OPT("MMD", CL_ALL | CL_SEPARATE, OPT_MMD) \
- OPT("MP", CL_ALL, OPT_MP) \
- OPT("MQ", CL_ALL | CL_ARG, OPT_MQ) \
- OPT("MT", CL_ALL | CL_ARG, OPT_MT) \
- OPT("P", CL_ALL, OPT_P) \
- OPT("Wabi", CL_CXX, OPT_Wabi) \
- OPT("Wall", CL_ALL, OPT_Wall) \
- OPT("Wbad-function-cast", CL_C, OPT_Wbad_function_cast) \
- OPT("Wcast-qual", CL_ALL, OPT_Wcast_qual) \
- OPT("Wchar-subscripts", CL_ALL, OPT_Wchar_subscripts) \
- OPT("Wcomment", CL_ALL, OPT_Wcomment) \
- OPT("Wcomments", CL_ALL, OPT_Wcomments) \
- OPT("Wconversion", CL_ALL, OPT_Wconversion) \
- OPT("Wctor-dtor-privacy", CL_CXX, OPT_Wctor_dtor_privacy) \
- OPT("Wdeprecated", CL_CXX, OPT_Wdeprecated) \
- OPT("Wdiv-by-zero", CL_C, OPT_Wdiv_by_zero) \
- OPT("Weffc++", CL_CXX, OPT_Weffcxx) \
- OPT("Wendif-labels", CL_ALL, OPT_Wendif_labels) \
- OPT("Werror", CL_ALL, OPT_Werror) \
- OPT("Werror-implicit-function-declaration", \
- CL_C, OPT_Werror_implicit_function_decl) \
- OPT("Wfloat-equal", CL_ALL, OPT_Wfloat_equal) \
- OPT("Wformat", CL_ALL, OPT_Wformat) \
- OPT("Wformat-extra-args", CL_ALL, OPT_Wformat_extra_args) \
- OPT("Wformat-nonliteral", CL_ALL, OPT_Wformat_nonliteral) \
- OPT("Wformat-security", CL_ALL, OPT_Wformat_security) \
- OPT("Wformat-y2k", CL_ALL, OPT_Wformat_y2k) \
- OPT("Wformat-zero-length", CL_C, OPT_Wformat_zero_length) \
- OPT("Wformat=", CL_ALL | CL_JOINED, OPT_Wformat_eq) \
- OPT("Wimplicit", CL_CXX, OPT_Wimplicit) \
- OPT("Wimplicit-function-declaration", CL_C, OPT_Wimplicit_function_decl) \
- OPT("Wimplicit-int", CL_C, OPT_Wimplicit_int) \
- OPT("Wimport", CL_ALL, OPT_Wimport) \
- OPT("Wlong-long", CL_ALL, OPT_Wlong_long) \
- OPT("Wmain", CL_C, OPT_Wmain) \
- OPT("Wmissing-braces", CL_ALL, OPT_Wmissing_braces) \
- OPT("Wmissing-declarations", CL_C, OPT_Wmissing_declarations) \
- OPT("Wmissing-format-attribute",CL_ALL, OPT_Wmissing_format_attribute) \
- OPT("Wmissing-prototypes", CL_ALL, OPT_Wmissing_prototypes) \
- OPT("Wmultichar", CL_ALL, OPT_Wmultichar) \
- OPT("Wnested-externs", CL_C, OPT_Wnested_externs) \
- OPT("Wnon-template-friend", CL_CXX, OPT_Wnon_template_friend) \
- OPT("Wnon-virtual-dtor", CL_CXX, OPT_Wnon_virtual_dtor) \
- OPT("Wnonnull", CL_C, OPT_Wnonnull) \
- OPT("Wold-style-cast", CL_CXX, OPT_Wold_style_cast) \
- OPT("Woverloaded-virtual", CL_CXX, OPT_Woverloaded_virtual) \
- OPT("Wparentheses", CL_ALL, OPT_Wparentheses) \
- OPT("Wpmf-conversions", CL_CXX, OPT_Wpmf_conversions) \
- OPT("Wpointer-arith", CL_ALL, OPT_Wpointer_arith) \
- OPT("Wprotocol", CL_OBJC, OPT_Wprotocol) \
- OPT("Wredundant-decls", CL_ALL, OPT_Wredundant_decls) \
- OPT("Wreorder", CL_CXX, OPT_Wreorder) \
- OPT("Wreturn-type", CL_ALL, OPT_Wreturn_type) \
- OPT("Wselector", CL_OBJC, OPT_Wselector) \
- OPT("Wsequence-point", CL_C, OPT_Wsequence_point) \
- OPT("Wsign-compare", CL_ALL, OPT_Wsign_compare) \
- OPT("Wsign-promo", CL_CXX, OPT_Wsign_promo) \
- OPT("Wstrict-prototypes", CL_ALL, OPT_Wstrict_prototypes) \
- OPT("Wsynth", CL_CXX, OPT_Wsynth) \
- OPT("Wsystem-headers", CL_ALL, OPT_Wsystem_headers) \
- OPT("Wtraditional", CL_C, OPT_Wtraditional) \
- OPT("Wtrigraphs", CL_ALL, OPT_Wtrigraphs) \
- OPT("Wundeclared-selector", CL_OBJC, OPT_Wundeclared_selector) \
- OPT("Wundef", CL_ALL, OPT_Wundef) \
- OPT("Wunknown-pragmas", CL_ALL, OPT_Wunknown_pragmas) \
- OPT("Wunused-macros", CL_ALL, OPT_Wunused_macros) \
- OPT("Wwrite-strings", CL_ALL, OPT_Wwrite_strings) \
- OPT("ansi", CL_ALL, OPT_ansi) \
- OPT("d", CL_ALL | CL_JOINED, OPT_d) \
- OPT("fabi-version=", CL_CXX | CL_JOINED, OPT_fabi_version) \
- OPT("faccess-control", CL_CXX, OPT_faccess_control) \
- OPT("fall-virtual", CL_CXX, OPT_fall_virtual) \
- OPT("falt-external-templates",CL_CXX, OPT_falt_external_templates) \
- OPT("fasm", CL_ALL, OPT_fasm) \
- OPT("fbuiltin", CL_ALL, OPT_fbuiltin) \
- OPT("fbuiltin-", CL_ALL | CL_JOINED, OPT_fbuiltin_) \
- OPT("fcheck-new", CL_CXX, OPT_fcheck_new) \
- OPT("fcond-mismatch", CL_ALL, OPT_fcond_mismatch) \
- OPT("fconserve-space", CL_CXX, OPT_fconserve_space) \
- OPT("fconst-strings", CL_CXX, OPT_fconst_strings) \
- OPT("fconstant-string-class=", CL_OBJC | CL_JOINED, \
- OPT_fconstant_string_class) \
- OPT("fdefault-inline", CL_CXX, OPT_fdefault_inline) \
- OPT("fdollars-in-identifiers",CL_ALL, OPT_fdollars_in_identifiers) \
- OPT("fdump-", CL_ALL | CL_JOINED, OPT_fdump) \
- OPT("felide-constructors", CL_CXX, OPT_felide_constructors) \
- OPT("fenforce-eh-specs", CL_CXX, OPT_fenforce_eh_specs) \
- OPT("fenum-int-equiv", CL_CXX, OPT_fenum_int_equiv) \
- OPT("fexternal-templates", CL_CXX, OPT_fexternal_templates) \
- OPT("ffor-scope", CL_CXX, OPT_ffor_scope) \
- OPT("ffreestanding", CL_C, OPT_ffreestanding) \
- OPT("fgnu-keywords", CL_CXX, OPT_fgnu_keywords) \
- OPT("fgnu-runtime", CL_OBJC, OPT_fgnu_runtime) \
- OPT("fguiding-decls", CL_CXX, OPT_fguiding_decls) \
- OPT("fhandle-exceptions", CL_CXX, OPT_fhandle_exceptions) \
- OPT("fhonor-std", CL_CXX, OPT_fhonor_std) \
- OPT("fhosted", CL_C, OPT_fhosted) \
- OPT("fhuge-objects", CL_CXX, OPT_fhuge_objects) \
- OPT("fimplement-inlines", CL_CXX, OPT_fimplement_inlines) \
- OPT("fimplicit-inline-templates", CL_CXX, OPT_fimplicit_inline_templates) \
- OPT("fimplicit-templates", CL_CXX, OPT_fimplicit_templates) \
- OPT("flabels-ok", CL_CXX, OPT_flabels_ok) \
- OPT("fms-extensions", CL_ALL, OPT_fms_extensions) \
- OPT("fname-mangling-version-",CL_CXX | CL_JOINED, OPT_fname_mangling) \
- OPT("fnew-abi", CL_CXX, OPT_fnew_abi) \
- OPT("fnext-runtime", CL_OBJC, OPT_fnext_runtime) \
- OPT("fnonansi-builtins", CL_CXX, OPT_fnonansi_builtins) \
- OPT("fnonnull-objects", CL_CXX, OPT_fnonnull_objects) \
- OPT("foperator-names", CL_CXX, OPT_foperator_names) \
- OPT("foptional-diags", CL_CXX, OPT_foptional_diags) \
- OPT("fpermissive", CL_CXX, OPT_fpermissive) \
- OPT("fpreprocessed", CL_ALL, OPT_fpreprocessed) \
- OPT("frepo", CL_CXX, OPT_frepo) \
- OPT("frtti", CL_CXX, OPT_frtti) \
- OPT("fshort-double", CL_ALL, OPT_fshort_double) \
- OPT("fshort-enums", CL_ALL, OPT_fshort_enums) \
- OPT("fshort-wchar", CL_ALL, OPT_fshort_wchar) \
- OPT("fshow-column", CL_ALL, OPT_fshow_column) \
- OPT("fsigned-bitfields", CL_ALL, OPT_fsigned_bitfields) \
- OPT("fsigned-char", CL_ALL, OPT_fsigned_char) \
- OPT("fsquangle", CL_CXX, OPT_fsquangle) \
- OPT("fstats", CL_CXX, OPT_fstats) \
- OPT("fstrict-prototype", CL_CXX, OPT_fstrict_prototype) \
- OPT("ftabstop=", CL_ALL | CL_JOINED, OPT_ftabstop) \
- OPT("ftemplate-depth-", CL_CXX | CL_JOINED, OPT_ftemplate_depth) \
- OPT("fthis-is-variable", CL_CXX, OPT_fthis_is_variable) \
- OPT("funsigned-bitfields", CL_ALL, OPT_funsigned_bitfields) \
- OPT("funsigned-char", CL_ALL, OPT_funsigned_char) \
- OPT("fuse-cxa-atexit", CL_CXX, OPT_fuse_cxa_atexit) \
- OPT("fvtable-gc", CL_CXX, OPT_fvtable_gc) \
- OPT("fvtable-thunks", CL_CXX, OPT_fvtable_thunks) \
- OPT("fweak", CL_CXX, OPT_fweak) \
- OPT("fxref", CL_CXX, OPT_fxref) \
- OPT("gen-decls", CL_OBJC, OPT_gen_decls) \
- OPT("lang-asm", CL_C_ONLY, OPT_lang_asm) \
- OPT("lang-objc", CL_ALL, OPT_lang_objc) \
- OPT("nostdinc", CL_ALL, OPT_nostdinc) \
- OPT("nostdinc++", CL_ALL, OPT_nostdincplusplus) \
- OPT("o", CL_ALL | CL_ARG, OPT_o) \
- OPT("pedantic", CL_ALL, OPT_pedantic) \
- OPT("pedantic-errors", CL_ALL, OPT_pedantic_errors) \
- OPT("print-objc-runtime-info", CL_OBJC, OPT_print_objc_runtime_info) \
- OPT("remap", CL_ALL, OPT_remap) \
- OPT("std=c++98", CL_CXX, OPT_std_cplusplus98) \
- OPT("std=c89", CL_C, OPT_std_c89) \
- OPT("std=c99", CL_C, OPT_std_c99) \
- OPT("std=c9x", CL_C, OPT_std_c9x) \
- OPT("std=gnu++98", CL_CXX, OPT_std_gnuplusplus98) \
- OPT("std=gnu89", CL_C, OPT_std_gnu89) \
- OPT("std=gnu99", CL_C, OPT_std_gnu99) \
- OPT("std=gnu9x", CL_C, OPT_std_gnu9x) \
- OPT("std=iso9899:1990", CL_C, OPT_std_iso9899_1990) \
- OPT("std=iso9899:199409", CL_C, OPT_std_iso9899_199409) \
- OPT("std=iso9899:1999", CL_C, OPT_std_iso9899_1999) \
- OPT("std=iso9899:199x", CL_C, OPT_std_iso9899_199x) \
- OPT("traditional-cpp", CL_ALL, OPT_traditional_cpp) \
- OPT("trigraphs", CL_ALL, OPT_trigraphs) \
- OPT("undef", CL_ALL, OPT_undef) \
- OPT("v", CL_ALL, OPT_v) \
- OPT("w", CL_ALL, OPT_w)
-
-#define OPT(text, flags, code) code,
-enum opt_code
-{
- COMMAND_LINE_OPTIONS
- N_OPTS
-};
-#undef OPT
-
-struct cl_option
-{
- const char *opt_text;
- unsigned char opt_len;
- unsigned char flags;
- ENUM_BITFIELD (opt_code) opt_code : 2 * CHAR_BIT;
-};
-
-#define OPT(text, flags, code) { text, sizeof(text) - 1, flags, code },
-#ifdef HOST_EBCDIC
-static struct cl_option cl_options[] =
-#else
-static const struct cl_option cl_options[] =
-#endif
-{
- COMMAND_LINE_OPTIONS
-};
-#undef OPT
-#undef COMMAND_LINE_OPTIONS
-
-/* Holds switches parsed by c_common_decode_option (), but whose
- handling is deffered to c_common_post_options (). */
-static void defer_opt PARAMS ((enum opt_code, const char *));
+/* Holds switches parsed by c_common_handle_option (), but whose
+ handling is deferred to c_common_post_options (). */
+static void defer_opt (enum opt_code, const char *);
static struct deferred_opt
{
enum opt_code code;
const char *arg;
} *deferred_opts;
-
-#ifdef HOST_EBCDIC
-static int opt_comp PARAMS ((const void *, const void *));
-
-/* Run-time sorting of options array. */
-static int
-opt_comp (p1, p2)
- const void *p1, *p2;
-{
- return strcmp (((struct cl_option *) p1)->opt_text,
- ((struct cl_option *) p2)->opt_text);
-}
-#endif
-
-/* Complain that switch OPT_INDEX expects an argument but none was
- provided. */
-static void
-missing_arg (opt_index)
- size_t opt_index;
+/* Complain that switch CODE expects an argument but none was
+ provided. OPT was the command-line option. Return FALSE to get
+ the default message in opts.c, TRUE if we provide a specialized
+ one. */
+bool
+c_common_missing_argument (const char *opt, size_t code)
{
- const char *opt_text = cl_options[opt_index].opt_text;
-
- switch (opt_index)
+ switch (code)
{
- case OPT_Wformat_eq:
- case OPT_d:
- case OPT_fabi_version:
- case OPT_fbuiltin_:
- case OPT_fdump:
- case OPT_fname_mangling:
- case OPT_ftabstop:
- case OPT_ftemplate_depth:
default:
- error ("missing argument to \"-%s\"", opt_text);
+ /* Pick up the default message. */
+ return false;
+
+ case OPT_fconstant_string_class_:
+ error ("no class name specified with %qs", opt);
break;
- case OPT_fconstant_string_class:
- error ("no class name specified with \"-%s\"", opt_text);
+ case OPT_A:
+ error ("assertion missing after %qs", opt);
+ break;
+
+ case OPT_D:
+ case OPT_U:
+ error ("macro name missing after %qs", opt);
+ break;
+
+ case OPT_F:
+ case OPT_I:
+ case OPT_idirafter:
+ case OPT_isysroot:
+ case OPT_isystem:
+ case OPT_iquote:
+ error ("missing path after %qs", opt);
break;
case OPT_MF:
case OPT_MD:
case OPT_MMD:
+ case OPT_include:
+ case OPT_imacros:
case OPT_o:
- error ("missing filename after \"-%s\"", opt_text);
+ error ("missing filename after %qs", opt);
break;
case OPT_MQ:
case OPT_MT:
- error ("missing target after \"-%s\"", opt_text);
+ error ("missing makefile target after %qs", opt);
break;
}
-}
-
-/* Perform a binary search to find which option the command-line INPUT
- matches. Returns its index in the option array, and N_OPTS on
- failure.
-
- Complications arise since some options can be suffixed with an
- argument, and multiple complete matches can occur, e.g. -pedantic
- and -pedantic-errors. Also, some options are only accepted by some
- languages. If a switch matches for a different language and
- doesn't match any alternatives for the true front end, the index of
- the matched switch is returned anyway. The caller should check for
- this case. */
-static size_t
-find_opt (input, lang_flag)
- const char *input;
- int lang_flag;
-{
- size_t md, mn, mx;
- size_t opt_len;
- size_t result = N_OPTS;
- int comp;
- mn = 0;
- mx = N_OPTS;
-
- while (mx > mn)
- {
- md = (mn + mx) / 2;
-
- opt_len = cl_options[md].opt_len;
- comp = strncmp (input, cl_options[md].opt_text, opt_len);
-
- if (comp < 0)
- mx = md;
- else if (comp > 0)
- mn = md + 1;
- else
- {
- /* The switch matches. It it an exact match? */
- if (input[opt_len] == '\0')
- return md;
- else
- {
- mn = md + 1;
-
- /* If the switch takes no arguments this is not a proper
- match, so we continue the search (e.g. input="stdc++"
- match was "stdc"). */
- if (!(cl_options[md].flags & CL_JOINED))
- continue;
-
- /* Is this switch valid for this front end? */
- if (!(cl_options[md].flags & lang_flag))
- {
- /* If subsequently we don't find a better match,
- return this and let the caller report it as a bad
- match. */
- result = md;
- continue;
- }
-
- /* Two scenarios remain: we have the switch's argument,
- or we match a longer option. This can happen with
- -iwithprefix and -withprefixbefore. The longest
- possible option match succeeds.
-
- Scan forwards, and return an exact match. Otherwise
- return the longest valid option-accepting match (mx).
- This loops at most twice with current options. */
- mx = md;
- for (md = md + 1; md < (size_t) N_OPTS; md++)
- {
- opt_len = cl_options[md].opt_len;
- if (strncmp (input, cl_options[md].opt_text, opt_len))
- break;
- if (input[opt_len] == '\0')
- return md;
- if (cl_options[md].flags & lang_flag
- && cl_options[md].flags & CL_JOINED)
- mx = md;
- }
-
- return mx;
- }
- }
- }
-
- return result;
+ return true;
}
/* Defer option CODE with argument ARG. */
static void
-defer_opt (code, arg)
- enum opt_code code;
- const char *arg;
+defer_opt (enum opt_code code, const char *arg)
{
- /* FIXME: this should be in c_common_init_options, which should take
- argc and argv. */
- if (!deferred_opts)
- {
- extern int save_argc;
- deferred_size = save_argc;
- deferred_opts = (struct deferred_opt *)
- xmalloc (deferred_size * sizeof (struct deferred_opt));
- }
-
- if (deferred_count == deferred_size)
- abort ();
-
deferred_opts[deferred_count].code = code;
deferred_opts[deferred_count].arg = arg;
deferred_count++;
}
/* Common initialization before parsing options. */
-void
-c_common_init_options (lang)
- enum c_language_kind lang;
+unsigned int
+c_common_init_options (unsigned int argc, const char **argv)
{
-#ifdef HOST_EBCDIC
- /* For non-ASCII hosts, the cl_options array needs to be sorted at
- runtime. */
- qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
-#endif
-#if ENABLE_CHECKING
- {
- size_t i;
+ static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX};
+ unsigned int i, result;
- for (i = 1; i < N_OPTS; i++)
- if (strcmp (cl_options[i - 1].opt_text, cl_options[i].opt_text) >= 0)
- error ("options array incorrectly sorted: %s is before %s",
- cl_options[i - 1].opt_text, cl_options[i].opt_text);
- }
-#endif
+ /* This is conditionalized only because that is the way the front
+ ends used to do it. Maybe this should be unconditional? */
+ if (c_dialect_cxx ())
+ {
+ /* By default wrap lines at 80 characters. Is getenv
+ ("COLUMNS") preferable? */
+ diagnostic_line_cutoff (global_dc) = 80;
+ /* By default, emit location information once for every
+ diagnostic message. */
+ diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
+ }
+
+ parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89,
+ ident_hash, line_table);
- c_language = lang;
- parse_in = cpp_create_reader (lang == clk_c ? CLK_GNUC89 : CLK_GNUCXX);
cpp_opts = cpp_get_options (parse_in);
- if (flag_objc)
- cpp_opts->objc = 1;
+ cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
+ cpp_opts->objc = c_dialect_objc ();
- flag_const_strings = (lang == clk_cplusplus);
- warn_pointer_arith = (lang == clk_cplusplus);
- if (lang == clk_c)
- warn_sign_compare = -1;
+ /* Reset to avoid warnings on internal definitions. We set it just
+ before passing on command-line options to cpplib. */
+ cpp_opts->warn_dollars = 0;
- /* Mark as "unspecified" (see c_common_post_options). */
- flag_bounds_check = -1;
-}
+ flag_exceptions = c_dialect_cxx ();
+ warn_pointer_arith = c_dialect_cxx ();
+ warn_write_strings = c_dialect_cxx();
-/* Handle one command-line option in (argc, argv).
- Can be called multiple times, to handle multiple sets of options.
- Returns number of strings consumed. */
-int
-c_common_decode_option (argc, argv)
- int argc;
- char **argv;
-{
- static const int lang_flags[] = {CL_C_ONLY, CL_C, CL_CXX_ONLY, CL_CXX};
- size_t opt_index;
- const char *opt, *arg = 0;
- char *dup = 0;
- bool on = true;
- int result, lang_flag;
- const struct cl_option *option;
- enum opt_code code;
+ /* By default, C99-like requirements for complex multiply and divide. */
+ flag_complex_method = 2;
- opt = argv[0];
+ deferred_opts = XNEWVEC (struct deferred_opt, argc);
- /* Interpret "-" or a non-switch as a file name. */
- if (opt[0] != '-' || opt[1] == '\0')
+ result = lang_flags[c_language];
+
+ if (c_language == clk_c)
{
- if (!in_fname)
- in_fname = opt;
- else if (!out_fname)
- out_fname = opt;
- else
+ /* 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"))
{
- error ("too many filenames given. Type %s --help for usage",
- progname);
- return argc;
+ result |= CL_Fortran;
+ break;
}
-
- return 1;
- }
-
- /* Drop the "no-" from negative switches. */
- if ((opt[1] == 'W' || opt[1] == 'f')
- && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-')
- {
- size_t len = strlen (opt) - 3;
-
- dup = xmalloc (len + 1);
- dup[0] = '-';
- dup[1] = opt[1];
- memcpy (dup + 2, opt + 5, len - 2 + 1);
- opt = dup;
- on = false;
+#endif
}
- result = cpp_handle_option (parse_in, argc, argv);
-
- /* Skip over '-'. */
- lang_flag = lang_flags[(c_language << 1) + flag_objc];
- opt_index = find_opt (opt + 1, lang_flag);
- if (opt_index == N_OPTS)
- goto done;
-
- result = 1;
- option = &cl_options[opt_index];
+ return result;
+}
- /* Sort out any argument the switch takes. */
- if (option->flags & CL_ARG)
+/* 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). */
+int
+c_common_handle_option (size_t scode, const char *arg, int value)
+{
+ const struct cl_option *option = &cl_options[scode];
+ 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)
{
- if (option->flags & CL_JOINED)
- {
- /* Have arg point to the original switch. This is because
- some code, such as disable_builtin_function, expects its
- argument to be persistent until the program exits. */
- arg = argv[0] + cl_options[opt_index].opt_len + 1;
- if (!on)
- arg += strlen ("no-");
- }
-
- /* If we don't have an argument, and CL_SEPARATE, try the next
- argument in the vector. */
- if (!arg || (*arg == '\0' && option->flags & CL_SEPARATE))
- {
- arg = argv[1];
- result = 2;
- }
-
- if (!arg || *arg == '\0')
+ default:
+ if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX))
{
- missing_arg (opt_index);
- result = argc;
- goto done;
+ if ((option->flags & CL_TARGET)
+ && ! targetcm.handle_c_option (scode, arg, value))
+ result = 0;
+ break;
}
- }
-
- /* Complain about the wrong language after we've swallowed any
- necessary extra argument. Eventually make this a hard error
- after the call to find_opt, and return argc. */
- if (!(cl_options[opt_index].flags & lang_flag))
- {
- complain_wrong_lang (opt_index);
- goto done;
- }
+#ifdef CL_Fortran
+ if (lang_fortran && (cl_options[code].flags & (CL_Fortran)))
+ break;
+#endif
+ result = 0;
+ break;
- switch (code = option->opt_code)
- {
- case N_OPTS: /* Shut GCC up. */
+ case OPT__output_pch_:
+ pch_file = arg;
break;
- case OPT__help:
- print_help ();
+ case OPT_A:
+ defer_opt (code, arg);
break;
case OPT_C:
cpp_opts->discard_comments_in_macro_exp = 0;
break;
+ case OPT_D:
+ defer_opt (code, arg);
+ break;
+
case OPT_E:
flag_preprocess_only = 1;
break;
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, 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;
+
case OPT_M:
case OPT_MM:
/* When doing dependencies with -M or -MM, suppress normal
depends on this. Preprocessed output does occur if -MD, -MMD
or environment var dependency generation is used. */
cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM: DEPS_USER);
- cpp_opts->no_output = 1;
+ flag_no_output = 1;
cpp_opts->inhibit_warnings = 1;
break;
break;
case OPT_P:
- cpp_opts->no_line_commands = 1;
+ flag_no_line_commands = 1;
+ break;
+
+ case OPT_fworking_directory:
+ flag_working_directory = value;
break;
- case OPT_Wabi:
- warn_abi = on;
+ case OPT_U:
+ defer_opt (code, arg);
break;
case OPT_Wall:
- set_Wunused (on);
- set_Wformat (on);
- set_Wimplicit (on);
- warn_char_subscripts = on;
- warn_missing_braces = on;
- warn_parentheses = on;
- warn_return_type = on;
- warn_sequence_point = on; /* Was C only. */
- warn_sign_compare = on; /* Was C++ only. */
- warn_switch = on;
- warn_strict_aliasing = on;
-
+ set_Wunused (value);
+ set_Wformat (value);
+ set_Wimplicit (value);
+ warn_char_subscripts = value;
+ warn_missing_braces = value;
+ warn_parentheses = value;
+ warn_return_type = value;
+ warn_sequence_point = value; /* Was C only. */
+ if (c_dialect_cxx ())
+ warn_sign_compare = value;
+ warn_switch = value;
+ set_Wstrict_aliasing (value);
+ warn_address = value;
+ warn_strict_overflow = value;
+ warn_array_bounds = value;
+
/* Only warn about unknown pragmas that are not in system
- headers. */
- warn_unknown_pragmas = on;
+ headers. */
+ warn_unknown_pragmas = value;
/* We save the value of warn_uninitialized, since if they put
-Wuninitialized on the command line, we need to generate a
warning about not using it without also specifying -O. */
if (warn_uninitialized != 1)
- warn_uninitialized = (on ? 2 : 0);
+ warn_uninitialized = (value ? 2 : 0);
- if (c_language == clk_c)
+ if (!c_dialect_cxx ())
/* We set this to 2 here, but 1 in -Wmain, so -ffreestanding
can turn it off only if it's not explicit. */
- warn_main = on * 2;
+ warn_main = value * 2;
else
{
/* C++-specific warnings. */
- warn_ctor_dtor_privacy = on;
- warn_nonvdtor = on;
- warn_reorder = on;
- warn_nontemplate_friend = on;
+ warn_reorder = value;
+ warn_nontemplate_friend = value;
+ warn_cxx0x_compat = value;
+ if (value > 0)
+ warn_write_strings = true;
}
- cpp_opts->warn_trigraphs = on;
- cpp_opts->warn_comments = on;
- cpp_opts->warn_num_sign_change = on;
- cpp_opts->warn_multichar = on; /* Was C++ only. */
- break;
-
- case OPT_Wbad_function_cast:
- warn_bad_function_cast = on;
- break;
-
- case OPT_Wcast_qual:
- warn_cast_qual = on;
- break;
+ 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. */
- case OPT_Wchar_subscripts:
- warn_char_subscripts = on;
+ if (warn_pointer_sign == -1)
+ warn_pointer_sign = 1;
break;
case OPT_Wcomment:
case OPT_Wcomments:
- cpp_opts->warn_comments = on;
- break;
-
- case OPT_Wconversion:
- warn_conversion = on;
- break;
-
- case OPT_Wctor_dtor_privacy:
- warn_ctor_dtor_privacy = on;
+ cpp_opts->warn_comments = value;
break;
case OPT_Wdeprecated:
- warn_deprecated = on;
- break;
-
- case OPT_Wdiv_by_zero:
- warn_div_by_zero = on;
- break;
-
- case OPT_Weffcxx:
- warn_ecpp = on;
+ cpp_opts->warn_deprecated = value;
break;
case OPT_Wendif_labels:
- cpp_opts->warn_endif_labels = on;
+ cpp_opts->warn_endif_labels = value;
break;
case OPT_Werror:
- cpp_opts->warnings_are_errors = on;
+ cpp_opts->warnings_are_errors = value;
+ global_dc->warning_as_error_requested = value;
break;
- case OPT_Werror_implicit_function_decl:
- if (!on)
- result = 0;
- else
- mesg_implicit_function_declaration = 2;
- break;
-
- case OPT_Wfloat_equal:
- warn_float_equal = on;
+ 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 (on);
+ set_Wformat (value);
break;
- case OPT_Wformat_eq:
+ case OPT_Wformat_:
set_Wformat (atoi (arg));
break;
- case OPT_Wformat_extra_args:
- warn_format_extra_args = on;
- break;
-
- case OPT_Wformat_nonliteral:
- warn_format_nonliteral = on;
- break;
-
- case OPT_Wformat_security:
- warn_format_security = on;
- break;
-
- case OPT_Wformat_y2k:
- warn_format_y2k = on;
- break;
-
- case OPT_Wformat_zero_length:
- warn_format_zero_length = on;
- break;
-
case OPT_Wimplicit:
- set_Wimplicit (on);
- break;
-
- case OPT_Wimplicit_function_decl:
- mesg_implicit_function_declaration = on;
- break;
-
- case OPT_Wimplicit_int:
- warn_implicit_int = on;
+ set_Wimplicit (value);
break;
case OPT_Wimport:
- cpp_opts->warn_import = on;
+ /* Silently ignore for now. */
break;
- case OPT_Wlong_long:
- warn_long_long = on;
+ case OPT_Winvalid_pch:
+ cpp_opts->warn_invalid_pch = value;
break;
case OPT_Wmain:
- if (on)
+ if (value)
warn_main = 1;
else
warn_main = -1;
break;
- case OPT_Wmissing_braces:
- warn_missing_braces = on;
- break;
-
- case OPT_Wmissing_declarations:
- warn_missing_declarations = on;
- break;
-
- case OPT_Wmissing_format_attribute:
- warn_missing_format_attribute = on;
- break;
-
- case OPT_Wmissing_prototypes:
- warn_missing_prototypes = on;
+ case OPT_Wmissing_include_dirs:
+ cpp_opts->warn_missing_include_dirs = value;
break;
case OPT_Wmultichar:
- cpp_opts->warn_multichar = on;
- break;
-
- case OPT_Wnested_externs:
- warn_nested_externs = on;
- break;
-
- case OPT_Wnon_template_friend:
- warn_nontemplate_friend = on;
- break;
-
- case OPT_Wnon_virtual_dtor:
- warn_nonvdtor = on;
- break;
-
- case OPT_Wnonnull:
- warn_nonnull = on;
- break;
-
- case OPT_Wold_style_cast:
- warn_old_style_cast = on;
- break;
-
- case OPT_Woverloaded_virtual:
- warn_overloaded_virtual = on;
- break;
-
- case OPT_Wparentheses:
- warn_parentheses = on;
- break;
-
- case OPT_Wpmf_conversions:
- warn_pmf2ptr = on;
- break;
-
- case OPT_Wpointer_arith:
- warn_pointer_arith = on;
- break;
-
- case OPT_Wprotocol:
- warn_protocol = on;
- break;
-
- case OPT_Wselector:
- warn_selector = on;
- break;
-
- case OPT_Wredundant_decls:
- warn_redundant_decls = on;
- break;
-
- case OPT_Wreorder:
- warn_reorder = on;
+ cpp_opts->warn_multichar = value;
+ break;
+
+ 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 = on;
- break;
-
- case OPT_Wsequence_point:
- warn_sequence_point = on;
+ warn_return_type = value;
break;
- case OPT_Wsign_compare:
- warn_sign_compare = on;
- break;
-
- case OPT_Wsign_promo:
- warn_sign_promo = on;
- break;
-
- case OPT_Wstrict_prototypes:
- if (!on && c_language == clk_cplusplus)
- warning ("-Wno-strict-prototypes is not supported in C++");
- else
- warn_strict_prototypes = on;
- break;
-
- case OPT_Wsynth:
- warn_synth = on;
+ case OPT_Wstrict_null_sentinel:
+ warn_strict_null_sentinel = value;
break;
case OPT_Wsystem_headers:
- cpp_opts->warn_system_headers = on;
+ cpp_opts->warn_system_headers = value;
break;
case OPT_Wtraditional:
- warn_traditional = on;
- cpp_opts->warn_traditional = on;
+ cpp_opts->warn_traditional = value;
break;
case OPT_Wtrigraphs:
- cpp_opts->warn_trigraphs = on;
- break;
-
- case OPT_Wundeclared_selector:
- warn_undeclared_selector = on;
+ cpp_opts->warn_trigraphs = value;
break;
case OPT_Wundef:
- cpp_opts->warn_undef = on;
+ cpp_opts->warn_undef = value;
break;
case OPT_Wunknown_pragmas:
/* Set to greater than 1, so that even unknown pragmas in
- system headers will be warned about. */
- warn_unknown_pragmas = on * 2;
+ system headers will be warned about. */
+ warn_unknown_pragmas = value * 2;
break;
case OPT_Wunused_macros:
- cpp_opts->warn_unused_macros = on;
+ warn_unused_macros = value;
+ break;
+
+ case OPT_Wvariadic_macros:
+ warn_variadic_macros = value;
break;
case OPT_Wwrite_strings:
- if (c_language == clk_c)
- flag_const_strings = on;
- else
- warn_write_strings = on;
+ warn_write_strings = value;
break;
-
+
+ case OPT_Weffc__:
+ warn_ecpp = value;
+ if (value)
+ warn_nonvdtor = true;
+ break;
+
case OPT_ansi:
- if (c_language == clk_c)
+ if (!c_dialect_cxx ())
set_std_c89 (false, true);
else
set_std_cxx98 (true);
break;
case OPT_fcond_mismatch:
- if (c_language == clk_c)
+ if (!c_dialect_cxx ())
{
- flag_cond_mismatch = on;
+ flag_cond_mismatch = value;
break;
}
/* 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_flabels_ok:
- case OPT_fname_mangling:
+ case OPT_fname_mangling_version_:
case OPT_fnew_abi:
case OPT_fnonnull_objects:
case OPT_fsquangle:
case OPT_fthis_is_variable:
case OPT_fvtable_thunks:
case OPT_fxref:
- warning ("switch \"%s\" is no longer supported", argv[0]);
- break;
-
- case OPT_fabi_version:
- flag_abi_version = read_integral_parameter (arg, argv[0], 1);
+ case OPT_fvtable_gc:
+ warning (0, "switch %qs is no longer supported", option->opt_text);
break;
case OPT_faccess_control:
- flag_access_control = on;
- break;
-
- case OPT_falt_external_templates:
- flag_alt_external_templates = on;
- if (on)
- flag_external_templates = true;
- cp_deprecated:
- warning ("switch \"%s\" is deprecated, please see documentation for details", argv[0]);
+ flag_access_control = value;
break;
case OPT_fasm:
- flag_no_asm = !on;
+ flag_no_asm = !value;
break;
case OPT_fbuiltin:
- flag_no_builtin = !on;
+ flag_no_builtin = !value;
break;
case OPT_fbuiltin_:
- if (on)
+ if (value)
result = 0;
else
disable_builtin_function (arg);
break;
- case OPT_fdollars_in_identifiers:
- dollars_in_ident = on;
+ case OPT_fdirectives_only:
+ cpp_opts->directives_only = value;
break;
- case OPT_fdump:
- if (!on || !dump_switch_p (argv[0] + strlen ("-f")))
- result = 0;
+ case OPT_fdollars_in_identifiers:
+ cpp_opts->dollars_in_ident = value;
break;
case OPT_ffreestanding:
- on = !on;
- /* Fall through... */
+ value = !value;
+ /* Fall through.... */
case OPT_fhosted:
- flag_hosted = on;
- flag_no_builtin = !on;
+ flag_hosted = value;
+ flag_no_builtin = !value;
/* warn_main will be 2 if set by -Wall, 1 if set by -Wmain */
- if (!on && warn_main == 2)
+ if (!value && warn_main == 2)
warn_main = 0;
break;
case OPT_fshort_double:
- flag_short_double = on;
+ flag_short_double = value;
break;
case OPT_fshort_enums:
- flag_short_enums = on;
+ flag_short_enums = value;
break;
case OPT_fshort_wchar:
- flag_short_wchar = on;
+ flag_short_wchar = value;
break;
case OPT_fsigned_bitfields:
- flag_signed_bitfields = on;
- explicit_flag_signed_bitfields = 1;
+ flag_signed_bitfields = value;
break;
case OPT_fsigned_char:
- flag_signed_char = on;
+ flag_signed_char = value;
break;
case OPT_funsigned_bitfields:
- flag_signed_bitfields = !on;
- explicit_flag_signed_bitfields = 1;
+ flag_signed_bitfields = !value;
break;
case OPT_funsigned_char:
- flag_signed_char = !on;
+ flag_signed_char = !value;
break;
case OPT_fcheck_new:
- flag_check_new = on;
+ flag_check_new = value;
break;
case OPT_fconserve_space:
- flag_conserve_space = on;
+ flag_conserve_space = value;
break;
- case OPT_fconst_strings:
- flag_const_strings = on;
- break;
-
- case OPT_fconstant_string_class:
+ case OPT_fconstant_string_class_:
constant_string_class_name = arg;
break;
case OPT_fdefault_inline:
- flag_default_inline = on;
+ flag_default_inline = value;
break;
case OPT_felide_constructors:
- flag_elide_constructors = on;
+ flag_elide_constructors = value;
break;
case OPT_fenforce_eh_specs:
- flag_enforce_eh_specs = on;
+ flag_enforce_eh_specs = value;
break;
- case OPT_fexternal_templates:
- flag_external_templates = on;
- goto cp_deprecated;
+ case OPT_fextended_identifiers:
+ cpp_opts->extended_identifiers = value;
+ break;
case OPT_ffor_scope:
- flag_new_for_scope = on;
+ flag_new_for_scope = value;
break;
case OPT_fgnu_keywords:
- flag_no_gnu_keywords = !on;
+ flag_no_gnu_keywords = !value;
break;
case OPT_fgnu_runtime:
- flag_next_runtime = !on;
+ flag_next_runtime = !value;
break;
case OPT_fhandle_exceptions:
- warning ("-fhandle-exceptions has been renamed to -fexceptions (and is now on by default)");
- flag_exceptions = on;
+ warning (0, "-fhandle-exceptions has been renamed -fexceptions (and is now on by default)");
+ flag_exceptions = value;
break;
case OPT_fimplement_inlines:
- flag_implement_inlines = on;
+ flag_implement_inlines = value;
break;
case OPT_fimplicit_inline_templates:
- flag_implicit_inline_templates = on;
+ flag_implicit_inline_templates = value;
break;
case OPT_fimplicit_templates:
- flag_implicit_templates = on;
+ flag_implicit_templates = value;
+ break;
+
+ case OPT_flax_vector_conversions:
+ flag_lax_vector_conversions = value;
break;
case OPT_fms_extensions:
- flag_ms_extensions = on;
+ flag_ms_extensions = value;
break;
case OPT_fnext_runtime:
- flag_next_runtime = on;
+ flag_next_runtime = value;
+ break;
+
+ case OPT_fnil_receivers:
+ flag_nil_receivers = value;
break;
case OPT_fnonansi_builtins:
- flag_no_nonansi_builtin = !on;
+ flag_no_nonansi_builtin = !value;
break;
case OPT_foperator_names:
- cpp_opts->operator_names = on;
+ cpp_opts->operator_names = value;
break;
case OPT_foptional_diags:
- flag_optional_diags = on;
+ flag_optional_diags = value;
+ break;
+
+ case OPT_fpch_deps:
+ cpp_opts->restore_pch_deps = value;
+ break;
+
+ case OPT_fpch_preprocess:
+ flag_pch_preprocess = value;
break;
case OPT_fpermissive:
- flag_permissive = on;
+ flag_permissive = value;
break;
case OPT_fpreprocessed:
- cpp_opts->preprocessed = on;
+ cpp_opts->preprocessed = value;
+ break;
+
+ case OPT_freplace_objc_classes:
+ flag_replace_objc_classes = value;
break;
case OPT_frepo:
- flag_use_repository = on;
- if (on)
+ flag_use_repository = value;
+ if (value)
flag_implicit_templates = 0;
break;
case OPT_frtti:
- flag_rtti = on;
+ flag_rtti = value;
break;
case OPT_fshow_column:
- cpp_opts->show_column = on;
+ cpp_opts->show_column = value;
break;
case OPT_fstats:
- flag_detailed_statistics = on;
+ flag_detailed_statistics = value;
break;
- case OPT_ftabstop:
- /* Don't recognize -fno-tabstop=. */
- if (!on)
- return 0;
-
+ case OPT_ftabstop_:
/* It is documented that we silently ignore silly values. */
- {
- char *endptr;
- long tabstop = strtol (arg, &endptr, 10);
- if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
- cpp_opts->tabstop = tabstop;
- }
+ if (value >= 1 && value <= 100)
+ cpp_opts->tabstop = value;
break;
- case OPT_ftemplate_depth:
- max_tinst_depth = read_integral_parameter (arg, argv[0], 0);
+ case OPT_fexec_charset_:
+ cpp_opts->narrow_charset = arg;
break;
- case OPT_fvtable_gc:
- flag_vtable_gc = on;
+ case OPT_fwide_exec_charset_:
+ 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;
case OPT_fuse_cxa_atexit:
- flag_use_cxa_atexit = on;
+ 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 = on;
+ 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_femit_struct_debug_baseonly:
+ set_struct_debug_option ("base");
+ break;
+
+ case OPT_femit_struct_debug_reduced:
+ set_struct_debug_option ("dir:ord:sys,dir:gen:any,ind:base");
+ break;
+
+ case OPT_femit_struct_debug_detailed_:
+ set_struct_debug_option (arg);
+ break;
+
+ case OPT_idirafter:
+ add_path (xstrdup (arg), AFTER, 0, true);
+ break;
+
+ case OPT_imacros:
+ case OPT_include:
+ 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, true);
+ break;
+
+ case OPT_iwithprefix:
+ add_prefixed_path (arg, SYSTEM);
+ break;
+
+ case OPT_iwithprefixbefore:
+ add_prefixed_path (arg, BRACKET);
+ break;
+
case OPT_lang_asm:
cpp_set_lang (parse_in, CLK_ASM);
+ cpp_opts->dollars_in_ident = false;
+ break;
+
+ case OPT_lang_fortran:
+ lang_fortran = true;
break;
case OPT_lang_objc:
break;
case OPT_nostdinc:
- /* No default include directories. You must specify all
- include-file directories with -I. */
- cpp_opts->no_standard_includes = 1;
+ std_inc = false;
break;
- case OPT_nostdincplusplus:
- /* No default C++-specific include directories. */
- cpp_opts->no_standard_cplusplus_includes = 1;
+ case OPT_nostdinc__:
+ std_cxx_inc = false;
break;
case OPT_o:
if (!out_fname)
out_fname = arg;
else
- {
- error ("output filename specified twice");
- result = argc;
- }
+ error ("output filename specified twice");
break;
/* We need to handle the -pedantic switches here, rather than in
is not overridden. */
case OPT_pedantic_errors:
cpp_opts->pedantic_errors = 1;
- /* fall through */
+ /* Fall through. */
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_cplusplus98:
- case OPT_std_gnuplusplus98:
- set_std_cxx98 (code == OPT_std_cplusplus98 /* ISO */);
+ case OPT_std_c__98:
+ case OPT_std_gnu__98:
+ 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:
break;
case OPT_v:
- cpp_opts->verbose = 1;
+ verbose = true;
break;
}
- done:
- if (dup)
- free (dup);
return result;
}
/* Post-switch processing. */
bool
-c_common_post_options ()
+c_common_post_options (const char **pfilename)
{
+ struct cpp_callbacks *cb;
+
/* Canonicalize the input and output filenames. */
- if (in_fname == NULL || !strcmp (in_fname, "-"))
- in_fname = "";
+ if (in_fnames == NULL)
+ {
+ in_fnames = XNEWVEC (const char *, 1);
+ in_fnames[0] = "";
+ }
+ else if (strcmp (in_fnames[0], "-") == 0)
+ in_fnames[0] = "";
if (out_fname == NULL || !strcmp (out_fname, "-"))
out_fname = "";
sanitize_cpp_opts ();
+ register_include_chains (parse_in, sysroot, iprefix, imultilib,
+ std_inc, std_cxx_inc && c_dialect_cxx (), verbose);
+
+#ifdef C_COMMON_OVERRIDE_OPTIONS
+ /* Some machines may reject certain combinations of C
+ language-specific options. */
+ C_COMMON_OVERRIDE_OPTIONS;
+#endif
+
flag_inline_trees = 1;
- /* 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)
+ /* Use tree inlining. */
+ if (!flag_no_inline)
+ flag_no_inline = 1;
+ if (flag_inline_functions)
+ flag_inline_trees = 2;
+
+ /* By default we use C99 inline semantics in GNU99 or C99 mode. C99
+ inline semantics are not supported in GNU89 or C89 mode. */
+ if (flag_gnu89_inline == -1)
+ flag_gnu89_inline = !flag_isoc99;
+ else if (!flag_gnu89_inline && !flag_isoc99)
+ error ("-fno-gnu89-inline is only supported in GNU99 or C99 mode");
+
+ /* 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 -Wtype-limits, -Wclobbered,
+ -Wempty-body, -Wsign-compare,
+ -Wmissing-field-initializers, -Wmissing-parameter-type
+ -Wold-style-declaration, and -Woverride-init,
+ but not if explicitly overridden. */
+ if (warn_type_limits == -1)
+ warn_type_limits = extra_warnings;
+ 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;
+
+ /* Adjust various flags for C++ based on command-line settings. */
+ if (c_dialect_cxx ())
{
+ if (!flag_permissive)
+ {
+ flag_pedantic_errors = 1;
+ cpp_opts->pedantic_errors = 1;
+ }
if (!flag_no_inline)
- flag_no_inline = 1;
- if (flag_inline_functions)
{
- flag_inline_trees = 2;
- flag_inline_functions = 0;
+ flag_inline_trees = 1;
+ flag_no_inline = 1;
}
- }
+ if (flag_inline_functions)
+ flag_inline_trees = 2;
+ }
+
+ /* In C, -Wconversion enables -Wsign-conversion (unless disabled
+ through -Wno-sign-conversion). While in C++,
+ -Wsign-conversion needs to be requested explicitly. */
+ if (warn_sign_conversion == -1)
+ warn_sign_conversion = (c_dialect_cxx ()) ? 0 : warn_conversion;
- /* If still "unspecified", make it match -fbounded-pointers. */
- if (flag_bounds_check == -1)
- flag_bounds_check = flag_bounded_pointers;
/* 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_contains_nul,
+ "-Wformat-contains-nul 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;
+
+ /* If we're allowing C++0x constructs, don't warn about C++0x
+ compatibility problems. */
+ if (cxx_dialect == cxx0x)
+ warn_cxx0x_compat = 0;
+
+ if (flag_preprocess_only)
+ {
+ /* Open the output now. We must do so even if flag_no_output is
+ on, because there may be other output than from the actual
+ preprocessing (e.g. from -dM). */
+ if (out_fname[0] == '\0')
+ out_stream = stdout;
+ else
+ out_stream = fopen (out_fname, "w");
+
+ if (out_stream == NULL)
+ {
+ fatal_error ("opening output file %s: %m", out_fname);
+ return false;
+ }
+
+ if (num_in_fnames > 1)
+ error ("too many filenames given. Type %s --help for usage",
+ progname);
+
+ init_pp_output (out_stream);
+ }
+ else
+ {
+ init_c_lex ();
+
+ /* Yuk. WTF is this? I do know ObjC relies on it somewhere. */
+ input_location = UNKNOWN_LOCATION;
+ }
+
+ cb = cpp_get_callbacks (parse_in);
+ cb->file_change = cb_file_change;
+ cb->dir_change = cb_dir_change;
+ cpp_post_options (parse_in);
+
+ input_location = UNKNOWN_LOCATION;
/* If an error has occurred in cpplib, note it so we fail
immediately. */
errorcount += cpp_errors (parse_in);
- return flag_preprocess_only;
-}
+ *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;
+ }
-/* Preprocess the input file to out_stream. */
-static void
-preprocess_file ()
-{
- /* Open the output now. We must do so even if no_output is on,
- because there may be other output than from the actual
- preprocessing (e.g. from -dM). */
- if (out_fname[0] == '\0')
- out_stream = stdout;
- else
- out_stream = fopen (out_fname, "w");
+ if (flag_working_directory
+ && flag_preprocess_only && !flag_no_line_commands)
+ pp_dir_change (parse_in, get_src_pwd ());
- if (out_stream == NULL)
- fatal_io_error ("opening output file %s", out_fname);
- else
- cpp_preprocess_file (parse_in, in_fname, out_stream);
+ return flag_preprocess_only;
}
/* Front end initialization common to C, ObjC and C++. */
-const char *
-c_common_init (filename)
- const char *filename;
+bool
+c_common_init (void)
{
/* Set up preprocessor arithmetic. Must be done after call to
c_common_nodes_and_builtins for type nodes to be good. */
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;
- /* Register preprocessor built-ins before calls to
- cpp_main_file. */
- cpp_get_callbacks (parse_in)->register_builtins = cb_register_builtins;
+ /* 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);
- /* NULL is passed up to toplev.c and we exit quickly. */
if (flag_preprocess_only)
{
- preprocess_file ();
- return NULL;
+ finish_options ();
+ preprocess_file (parse_in);
+ return false;
}
- /* Do this before initializing pragmas, as then cpplib's hash table
- has been set up. NOTE: we are using our own file name here, not
- the one supplied. */
- filename = init_c_lex (in_fname);
-
+ /* Has to wait until now so that cpplib has its hash table. */
init_pragma ();
- return filename;
+ return true;
+}
+
+/* Initialize the integrated preprocessor after debug output has been
+ initialized; loop over each input file. */
+void
+c_common_parse_file (int set_yydebug)
+{
+ unsigned int i;
+
+ 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 ();
+ }
+
+ 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 ();
+ 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. */
void
-c_common_finish ()
+c_common_finish (void)
{
FILE *deps_stream = NULL;
{
deps_stream = fopen (deps_file, deps_append ? "a": "w");
if (!deps_stream)
- fatal_io_error ("opening dependency file %s", deps_file);
+ fatal_error ("opening dependency file %s: %m", deps_file);
}
}
if (deps_stream && deps_stream != out_stream
&& (ferror (deps_stream) || fclose (deps_stream)))
- fatal_io_error ("closing dependency file %s", deps_file);
+ fatal_error ("closing dependency file %s: %m", deps_file);
if (out_stream && (ferror (out_stream) || fclose (out_stream)))
- fatal_io_error ("when writing output to %s", out_fname);
+ fatal_error ("when writing output to %s: %m", out_fname);
}
/* Either of two environment variables can specify output of
rather than overwriting it, and like Sun's compiler
SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */
static void
-check_deps_environment_vars ()
+check_deps_environment_vars (void)
{
char *spec;
deps_file = spec;
deps_append = 1;
+ deps_seen = true;
}
}
/* Handle deferred command line switches. */
static void
-handle_deferred_opts ()
+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];
- switch (opt->code)
- {
- case OPT_MT:
- case OPT_MQ:
- cpp_add_dependency_target (parse_in, opt->arg, opt->code == OPT_MQ);
- break;
-
- default:
- abort ();
- }
+ if (opt->code == OPT_MT || opt->code == OPT_MQ)
+ deps_add_target (deps, opt->arg, opt->code == OPT_MQ);
}
-
- free (deferred_opts);
}
/* These settings are appropriate for GCC, but not necessarily so for
cpplib as a library. */
static void
-sanitize_cpp_opts ()
+sanitize_cpp_opts (void)
{
/* If we don't know what style of dependencies to output, complain
if any other dependency switches have been given. */
/* -dM and dependencies suppress normal output; do it here so that
the last -d[MDN] switch overrides earlier ones. */
- if (cpp_opts->dump_macros == dump_only)
- cpp_opts->no_output = 1;
+ if (flag_dump_macros == 'M')
+ flag_no_output = 1;
+
+ /* By default, -fdirectives-only implies -dD. This allows subsequent phases
+ to perform proper macro expansion. */
+ if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros)
+ flag_dump_macros = 'D';
/* Disable -dD, -dN and -dI if normal output is suppressed. Allow
-dM since at least glibc relies on -M -dM to work. */
- if (cpp_opts->no_output)
+ /* Also, flag_no_output implies flag_no_line_commands, always. */
+ if (flag_no_output)
{
- if (cpp_opts->dump_macros != dump_only)
- cpp_opts->dump_macros = dump_none;
- cpp_opts->dump_includes = 0;
+ 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);
+
+ if (cpp_opts->directives_only)
+ {
+ if (warn_unused_macros)
+ error ("-fdirectives-only is incompatible with -Wunused_macros");
+ if (cpp_opts->traditional)
+ error ("-fdirectives-only is incompatible with -traditional");
+ }
+}
+
+/* Add include path with a prefix at the front of its name. */
+static void
+add_prefixed_path (const char *suffix, size_t chain)
+{
+ char *path;
+ const char *prefix;
+ size_t prefix_len, suffix_len;
+
+ suffix_len = strlen (suffix);
+ prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR;
+ prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len;
+
+ 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, false);
+}
+
+/* Handle -D, -U, -A, -imacros, and the first -include. */
+static void
+finish_options (void)
+{
+ if (!cpp_opts->preprocessed)
+ {
+ size_t i;
+
+ 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);
+
+ /* We're about to send user input to cpplib, so make it warn for
+ things that we previously (when we sent it internal definitions)
+ told it to not warn.
+
+ C99 permits implementation-defined characters in identifiers.
+ The documented meaning of -std= is to turn off extensions that
+ conflict with the specified standard, and since a strictly
+ conforming program cannot contain a '$', we do not condition
+ their acceptance on the -std= setting. */
+ cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99);
+
+ 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_D)
+ cpp_define (parse_in, opt->arg);
+ else if (opt->code == OPT_U)
+ cpp_undef (parse_in, opt->arg);
+ else if (opt->code == OPT_A)
+ {
+ if (opt->arg[0] == '-')
+ cpp_unassert (parse_in, opt->arg + 1);
+ else
+ cpp_assert (parse_in, opt->arg);
+ }
+ }
+
+ /* Handle -imacros after -D and -U. */
+ 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))
+ {
+ /* Disable push_command_line_include callback for now. */
+ include_cursor = deferred_count + 1;
+ cpp_scan_nooutput (parse_in);
+ }
+ }
+ }
+ else if (cpp_opts->directives_only)
+ cpp_init_special_builtins (parse_in);
+
+ include_cursor = 0;
+ push_command_line_include ();
+}
+
+/* Give CPP the next file given by -include, if any. */
+static void
+push_command_line_include (void)
+{
+ while (include_cursor < deferred_count)
+ {
+ struct deferred_opt *opt = &deferred_opts[include_cursor++];
+
+ if (!cpp_opts->preprocessed && opt->code == OPT_include
+ && cpp_push_include (parse_in, opt->arg))
+ return;
+ }
+
+ if (include_cursor == deferred_count)
+ {
+ include_cursor++;
+ /* -Wunused-macros should only warn about macros defined hereafter. */
+ cpp_opts->warn_unused_macros = warn_unused_macros;
+ /* 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 * ARG_UNUSED (pfile),
+ const struct line_map *new_map)
+{
+ if (flag_preprocess_only)
+ pp_file_change (new_map);
+ else
+ fe_file_change (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
-set_std_c89 (c94, iso)
- int c94, iso;
+set_std_c89 (int c94, int iso)
{
cpp_set_lang (parse_in, c94 ? CLK_STDC94: iso ? CLK_STDC89: CLK_GNUC89);
flag_iso = iso;
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). */
static void
-set_std_c99 (iso)
- int iso;
+set_std_c99 (int 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). */
static void
-set_std_cxx98 (iso)
- int iso;
+set_std_cxx98 (int 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;
+ cxx_dialect = cxx98;
+}
+
+/* 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;
+ cxx_dialect = cxx0x;
}
/* Handle setting implicit to ON. */
static void
-set_Wimplicit (on)
- int on;
+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
unrecognized options; they may be aimed at toplev.c. */
static void
-handle_OPT_d (arg)
- const char *arg;
+handle_OPT_d (const char *arg)
{
char c;
while ((c = *arg++) != '\0')
switch (c)
{
- case 'M':
- cpp_opts->dump_macros = dump_only;
- break;
-
- case 'N':
- cpp_opts->dump_macros = dump_names;
- break;
-
- case 'D':
- cpp_opts->dump_macros = dump_definitions;
+ case 'M': /* Dump macros only. */
+ case 'N': /* Dump names. */
+ case 'D': /* Dump definitions. */
+ flag_dump_macros = c;
break;
case 'I':
- cpp_opts->dump_includes = 1;
+ flag_dump_includes = 1;
break;
}
}
-
-/* Write a slash-separated list of languages in FLAGS to BUF. */
-static void
-write_langs (buf, flags)
- char *buf;
- int flags;
-{
- *buf = '\0';
- if (flags & CL_C_ONLY)
- strcat (buf, "C");
- if (flags & CL_OBJC_ONLY)
- {
- if (*buf)
- strcat (buf, "/");
- strcat (buf, "ObjC");
- }
- if (flags & CL_CXX_ONLY)
- {
- if (*buf)
- strcat (buf, "/");
- strcat (buf, "C++");
- }
-}
-
-/* Complain that switch OPT_INDEX does not apply to this front end. */
-static void
-complain_wrong_lang (opt_index)
- size_t opt_index;
-{
- char ok_langs[60], bad_langs[60];
- int ok_flags = cl_options[opt_index].flags;
-
- write_langs (ok_langs, ok_flags);
- write_langs (bad_langs, ~ok_flags);
- warning ("\"-%s\" is valid for %s but not for %s",
- cl_options[opt_index].opt_text, ok_langs, bad_langs);
-}
-
-/* Handle --help output. */
-static void
-print_help ()
-{
- /* To keep the lines from getting too long for some compilers, limit
- to about 500 characters (6 lines) per chunk. */
- fputs (_("\
-Switches:\n\
- -include <file> Include the contents of <file> before other files\n\
- -imacros <file> Accept definition of macros in <file>\n\
- -iprefix <path> Specify <path> as a prefix for next two options\n\
- -iwithprefix <dir> Add <dir> to the end of the system include path\n\
- -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
- -isystem <dir> Add <dir> to the start of the system include path\n\
-"), stdout);
- fputs (_("\
- -idirafter <dir> Add <dir> to the end of the system include path\n\
- -I <dir> Add <dir> to the end of the main include path\n\
- -I- Fine-grained include path control; see info docs\n\
- -nostdinc Do not search system include directories\n\
- (dirs specified with -isystem will still be used)\n\
- -nostdinc++ Do not search system include directories for C++\n\
- -o <file> Put output into <file>\n\
-"), stdout);
- fputs (_("\
- -trigraphs Support ISO C trigraphs\n\
- -std=<std name> Specify the conformance standard; one of:\n\
- gnu89, gnu99, c89, c99, iso9899:1990,\n\
- iso9899:199409, iso9899:1999, c++98\n\
- -w Inhibit warning messages\n\
- -W[no-]trigraphs Warn if trigraphs are encountered\n\
- -W[no-]comment{s} Warn if one comment starts inside another\n\
-"), stdout);
- fputs (_("\
- -W[no-]traditional Warn about features not present in traditional C\n\
- -W[no-]undef Warn if an undefined macro is used by #if\n\
- -W[no-]import Warn about the use of the #import directive\n\
-"), stdout);
- fputs (_("\
- -W[no-]error Treat all warnings as errors\n\
- -W[no-]system-headers Do not suppress warnings from system headers\n\
- -W[no-]all Enable most preprocessor warnings\n\
-"), stdout);
- fputs (_("\
- -M Generate make dependencies\n\
- -MM As -M, but ignore system header files\n\
- -MD Generate make dependencies and compile\n\
- -MMD As -MD, but ignore system header files\n\
- -MF <file> Write dependency output to the given file\n\
- -MG Treat missing header file as generated files\n\
-"), stdout);
- fputs (_("\
- -MP Generate phony targets for all headers\n\
- -MQ <target> Add a MAKE-quoted target\n\
- -MT <target> Add an unquoted target\n\
-"), stdout);
- fputs (_("\
- -D<macro> Define a <macro> with string '1' as its value\n\
- -D<macro>=<val> Define a <macro> with <val> as its value\n\
- -A<question>=<answer> Assert the <answer> to <question>\n\
- -A-<question>=<answer> Disable the <answer> to <question>\n\
- -U<macro> Undefine <macro> \n\
- -v Display the version number\n\
-"), stdout);
- fputs (_("\
- -H Print the name of header files as they are used\n\
- -C Do not discard comments\n\
- -dM Display a list of macro definitions active at end\n\
- -dD Preserve macro definitions in output\n\
- -dN As -dD except that only the names are preserved\n\
- -dI Include #include directives in the output\n\
-"), stdout);
- fputs (_("\
- -f[no-]preprocessed Treat the input file as already preprocessed\n\
- -ftabstop=<number> Distance between tab stops for column reporting\n\
- -P Do not generate #line directives\n\
- -remap Remap file names when including files\n\
- --help Display this information\n\
-"), stdout);
-}