#include "gold.h"
#include <cstdlib>
+#include <vector>
#include <iostream>
#include <sys/stat.h>
#include "filenames.h"
#include "debug.h"
#include "script.h"
+#include "target-select.h"
#include "options.h"
namespace gold
{
-// The information we keep for a single command line option.
+General_options
+Position_dependent_options::default_options_;
-struct options::One_option
+namespace options
{
- // The single character option name, or '\0' if this is only a long
- // option.
- char short_option;
- // The long option name, or NULL if this is only a short option.
- const char* long_option;
+// This global variable is set up as General_options is constructed.
+static std::vector<const One_option*> registered_options;
- // Description of the option for --help output, or NULL if there is none.
- const char* doc;
+// These are set up at the same time -- the variables that accept one
+// dash, two, or require -z. A single variable may be in more than
+// one of thes data structures.
+typedef Unordered_map<std::string, One_option*> Option_map;
+static Option_map* long_options = NULL;
+static One_option* short_options[128];
- // How to print the option name in --help output, or NULL to use the
- // default.
- const char* help_output;
-
- // Long option dash control. This is ignored if long_option is
- // NULL.
- enum
- {
- // Long option normally takes one dash; two dashes are also
- // accepted.
- ONE_DASH,
- // Long option normally takes two dashes; one dash is also
- // accepted.
- TWO_DASHES,
- // Long option always takes two dashes.
- EXACTLY_TWO_DASHES
- } dash;
-
- // Function for special handling, or NULL. Returns the number of
- // arguments to skip. This will normally be at least 1, but it may
- // be 0 if this function changes *argv. ARG points to the location
- // in *ARGV where the option starts, which may be helpful for a
- // short option.
- int (*special)(int argc, char** argv, char *arg, bool long_option,
- Command_line*);
-
- // If this is a position independent option which does not take an
- // argument, this is the member function to call to record it. (In
- // this file, the bool will always be 'true' to indicate the option
- // is set.)
- void (General_options::*general_noarg)(bool);
-
- // If this is a position independent function which takes an
- // argument, this is the member function to call to record it.
- void (General_options::*general_arg)(const char*);
-
- // If this is a position dependent option which does not take an
- // argument, this is the member function to call to record it. (In
- // this file, the bool will always be 'true' to indicate the option
- // is set.)
- void (Position_dependent_options::*dependent_noarg)(bool);
-
- // If this is a position dependent option which takes an argument,
- // this is the member function to record it.
- void (Position_dependent_options::*dependent_arg)(const char*);
-
- // Return whether this option takes an argument.
- bool
- takes_argument() const
- { return this->general_arg != NULL || this->dependent_arg != NULL; }
-};
-
-// We have a separate table for -z options.
-
-struct options::One_z_option
+void
+One_option::register_option()
{
- // The name of the option.
- const char* name;
+ registered_options.push_back(this);
- // The member function in General_options called to record an option
- // which does not take an argument.
- void (General_options::*set_noarg)(bool);
+ // We can't make long_options a static Option_map because we can't
+ // guarantee that will be initialized before register_option() is
+ // first called.
+ if (long_options == NULL)
+ long_options = new Option_map;
- // The member function in General_options called to record an option
- // which does take an argument.
- void (General_options::*set_arg)(const char*);
-};
+ // TWO_DASHES means that two dashes are preferred, but one is ok too.
+ if (!this->longname.empty())
+ (*long_options)[this->longname] = this;
-// We have a separate table for --debug options.
+ const int shortname_as_int = static_cast<int>(this->shortname);
+ gold_assert(shortname_as_int >= 0 && shortname_as_int < 128);
+ if (this->shortname != '\0')
+ short_options[shortname_as_int] = this;
+}
-struct options::One_debug_option
+void
+One_option::print() const
{
- // The name of the option.
- const char* name;
+ bool comma = false;
+ printf(" ");
+ int len = 2;
+ if (this->shortname != '\0')
+ {
+ len += printf("-%c", this->shortname);
+ if (this->helparg)
+ {
+ // -z takes long-names only.
+ gold_assert(this->dashes != DASH_Z);
+ len += printf(" %s", this->helparg);
+ }
+ comma = true;
+ }
+ if (!this->longname.empty()
+ && !(this->longname[0] == this->shortname
+ && this->longname[1] == '\0'))
+ {
+ if (comma)
+ len += printf(", ");
+ switch (this->dashes)
+ {
+ case options::ONE_DASH: case options::EXACTLY_ONE_DASH:
+ len += printf("-");
+ break;
+ case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES:
+ len += printf("--");
+ break;
+ case options::DASH_Z:
+ len += printf("-z ");
+ break;
+ default:
+ gold_unreachable();
+ }
+ len += printf("%s", this->longname.c_str());
+ if (this->helparg)
+ {
+ // For most options, we print "--frob FOO". But for -z
+ // we print "-z frob=FOO".
+ len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ',
+ this->helparg);
+ }
+ }
+
+ if (len >= 30)
+ {
+ printf("\n");
+ len = 0;
+ }
+ for (; len < 30; ++len)
+ std::putchar(' ');
- // The flags to turn on.
- unsigned int debug_flags;
-};
+ // TODO: if we're boolean, add " (default)" when appropriate.
+ printf("%s\n", this->helpstring);
+}
-class options::Command_line_options
+void
+help()
{
- public:
- static const One_option options[];
- static const int options_size;
- static const One_z_option z_options[];
- static const int z_options_size;
- static const One_debug_option debug_options[];
- static const int debug_options_size;
-};
+ printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name);
-} // End namespace gold.
+ std::vector<const One_option*>::const_iterator it;
+ for (it = registered_options.begin(); it != registered_options.end(); ++it)
+ (*it)->print();
+}
-namespace
+// For bool, arg will be NULL (boolean options take no argument);
+// we always just set to true.
+void
+parse_bool(const char*, const char*, bool* retval)
{
+ *retval = true;
+}
-// Recognize input and output target names. The GNU linker accepts
-// these with --format and --oformat. This code is intended to be
-// minimally compatible. In practice for an ELF target this would be
-// the same target as the input files; that name always start with
-// "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex",
-// "binary", "ihex". See also
-// General_options::default_target_settings.
+void
+parse_uint(const char* option_name, const char* arg, int* retval)
+{
+ char* endptr;
+ *retval = strtol(arg, &endptr, 0);
+ if (*endptr != '\0' || retval < 0)
+ gold_fatal(_("%s: invalid option value (expected an integer): %s"),
+ option_name, arg);
+}
-gold::General_options::Object_format
-string_to_object_format(const char* arg)
+void
+parse_uint64(const char* option_name, const char* arg, uint64_t *retval)
{
- if (strncmp(arg, "elf", 3) == 0)
- return gold::General_options::OBJECT_FORMAT_ELF;
- else if (strcmp(arg, "binary") == 0)
- return gold::General_options::OBJECT_FORMAT_BINARY;
- else
+ char* endptr;
+ *retval = strtoull(arg, &endptr, 0);
+ if (*endptr != '\0')
+ gold_fatal(_("%s: invalid option value (expected an integer): %s"),
+ option_name, arg);
+}
+
+void
+parse_string(const char* option_name, const char* arg, const char** retval)
+{
+ if (*arg == '\0')
+ gold_fatal(_("%s: must take a non-empty argument"), option_name);
+ *retval = arg;
+}
+
+void
+parse_dirlist(const char*, const char* arg, Dir_list* retval)
+{
+ retval->push_back(Search_directory(arg, false));
+}
+
+void
+parse_choices(const char* option_name, const char* arg, const char** retval,
+ const char* choices[], int num_choices)
+{
+ for (int i = 0; i < num_choices; i++)
+ if (strcmp(choices[i], arg) == 0)
+ {
+ *retval = arg;
+ return;
+ }
+
+ // If we get here, the user did not enter a valid choice, so we die.
+ std::string choices_list;
+ for (int i = 0; i < num_choices; i++)
{
- gold::gold_error(_("format '%s' not supported "
- "(supported formats: elf, binary)"),
- arg);
- return gold::General_options::OBJECT_FORMAT_ELF;
+ choices_list += choices[i];
+ if (i != num_choices - 1)
+ choices_list += ", ";
}
+ gold_fatal(_("%s: must take one of the following arguments: %s"),
+ option_name, choices_list.c_str());
}
-// Handle the special -defsym option, which defines a symbol.
+} // End namespace options.
-int
-add_to_defsym(int argc, char** argv, char* arg, bool long_option,
- gold::Command_line* cmdline)
+// Define the handler for "special" options (set via DEFINE_special).
+
+void
+General_options::parse_help(const char*, const char*, Command_line*)
{
- int ret;
- const char* val = cmdline->get_special_argument("defsym", argc, argv, arg,
- long_option, &ret);
- cmdline->script_options().define_symbol(val);
- return ret;
+ options::help();
+ ::exit(EXIT_SUCCESS);
}
-// Handle the special -l option, which adds an input file.
+void
+General_options::parse_version(const char* opt, const char*, Command_line*)
+{
+ gold::print_version(opt[0] == '-' && opt[1] == 'v');
+ ::exit(EXIT_SUCCESS);
+}
-int
-library(int argc, char** argv, char* arg, bool long_option,
- gold::Command_line* cmdline)
+void
+General_options::parse_Bstatic(const char*, const char*, Command_line*)
{
- return cmdline->process_l_option(argc, argv, arg, long_option);
+ this->set_Bdynamic(false);
}
-// Handle the -R option. Historically the GNU linker made -R a
-// synonym for --just-symbols. ELF linkers have traditionally made -R
-// a synonym for -rpath. When ELF support was added to the GNU
-// linker, -R was changed to switch based on the argument: if the
-// argument is an ordinary file, we treat it as --just-symbols,
-// otherwise we treat it as -rpath. We need to be compatible with
-// this, because existing build scripts rely on it.
+void
+General_options::parse_defsym(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ cmdline->script_options().define_symbol(arg);
+}
-int
-handle_r_option(int argc, char** argv, char* arg, bool long_option,
- gold::Command_line* cmdline)
+void
+General_options::parse_library(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ Input_file_argument file(arg, true, "", false, *this);
+ cmdline->inputs().add_file(file);
+}
+
+void
+General_options::parse_R(const char* option, const char* arg,
+ Command_line* cmdline)
{
- int ret;
- const char* val = cmdline->get_special_argument("R", argc, argv, arg,
- long_option, &ret);
struct stat s;
- if (::stat(val, &s) != 0 || S_ISDIR(s.st_mode))
- cmdline->add_to_rpath(val);
+ if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode))
+ this->add_to_rpath(arg);
else
- cmdline->add_just_symbols_file(val);
- return ret;
+ this->parse_just_symbols(option, arg, cmdline);
}
-// Handle the --just-symbols option.
-
-int
-handle_just_symbols_option(int argc, char** argv, char* arg,
- bool long_option, gold::Command_line* cmdline)
+void
+General_options::parse_just_symbols(const char*, const char* arg,
+ Command_line* cmdline)
{
- int ret;
- const char* val = cmdline->get_special_argument("just-symbols", argc, argv,
- arg, long_option, &ret);
- cmdline->add_just_symbols_file(val);
- return ret;
+ Input_file_argument file(arg, false, "", true, *this);
+ cmdline->inputs().add_file(file);
}
-// Handle the special -T/--script option, which reads a linker script.
-
-int
-invoke_script(int argc, char** argv, char* arg, bool long_option,
- gold::Command_line* cmdline)
+void
+General_options::parse_static(const char*, const char*, Command_line*)
{
- int ret;
- const char* script_name = cmdline->get_special_argument("script", argc, argv,
- arg, long_option,
- &ret);
- if (!read_commandline_script(script_name, cmdline))
- gold::gold_fatal(_("unable to parse script file %s"), script_name);
- return ret;
+ this->set_static(true);
}
-// Handle the special --version-script option, which reads a version script.
-
-int
-invoke_version_script(int argc, char** argv, char* arg, bool long_option,
- gold::Command_line* cmdline)
+void
+General_options::parse_script(const char*, const char* arg,
+ Command_line* cmdline)
{
- int ret;
- const char* script_name = cmdline->get_special_argument("version-script",
- argc, argv,
- arg, long_option,
- &ret);
- if (!read_version_script(script_name, cmdline))
- gold::gold_fatal(_("unable to parse version script file %s"), script_name);
- return ret;
+ if (!read_commandline_script(arg, cmdline))
+ gold::gold_fatal(_("unable to parse script file %s"), arg);
}
-// Handle the special --start-group option.
-
-int
-start_group(int, char**, char* arg, bool, gold::Command_line* cmdline)
+void
+General_options::parse_version_script(const char*, const char* arg,
+ Command_line* cmdline)
{
- cmdline->start_group(arg);
- return 1;
+ if (!read_version_script(arg, cmdline))
+ gold::gold_fatal(_("unable to parse version script file %s"), arg);
}
-// Handle the special --end-group option.
+void
+General_options::parse_start_group(const char*, const char*,
+ Command_line* cmdline)
+{
+ cmdline->inputs().start_group();
+}
-int
-end_group(int, char**, char* arg, bool, gold::Command_line* cmdline)
+void
+General_options::parse_end_group(const char*, const char*,
+ Command_line* cmdline)
{
- cmdline->end_group(arg);
- return 1;
+ cmdline->inputs().end_group();
}
-// Report usage information for ld --help, and exit.
+} // End namespace gold.
-int
-help(int, char**, char*, bool, gold::Command_line*)
+namespace
{
- printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name);
- const int options_size = gold::options::Command_line_options::options_size;
- const gold::options::One_option* options =
- gold::options::Command_line_options::options;
- for (int i = 0; i < options_size; ++i)
- {
- if (options[i].doc == NULL)
- continue;
-
- printf(" ");
- int len = 2;
- bool comma = false;
-
- int j = i;
- do
- {
- if (options[j].help_output != NULL)
- {
- if (comma)
- {
- printf(", ");
- len += 2;
- }
- printf(options[j].help_output);
- len += std::strlen(options[j].help_output);
- comma = true;
- }
- else
- {
- if (options[j].short_option != '\0')
- {
- if (comma)
- {
- printf(", ");
- len += 2;
- }
- printf("-%c", options[j].short_option);
- len += 2;
- comma = true;
- }
-
- if (options[j].long_option != NULL)
- {
- if (comma)
- {
- printf(", ");
- len += 2;
- }
- if (options[j].dash == gold::options::One_option::ONE_DASH)
- {
- printf("-");
- ++len;
- }
- else
- {
- printf("--");
- len += 2;
- }
- printf("%s", options[j].long_option);
- len += std::strlen(options[j].long_option);
- comma = true;
- }
- }
- ++j;
- }
- while (j < options_size && options[j].doc == NULL);
-
- if (len >= 30)
- {
- printf("\n");
- len = 0;
- }
- for (; len < 30; ++len)
- std::putchar(' ');
-
- std::puts(options[i].doc);
- }
-
- ::exit(EXIT_SUCCESS);
+void
+usage()
+{
+ fprintf(stderr,
+ _("%s: use the --help option for usage information\n"),
+ gold::program_name);
+ ::exit(EXIT_FAILURE);
+}
- return 0;
+void
+usage(const char* msg, const char *opt)
+{
+ fprintf(stderr,
+ _("%s: %s: %s\n"),
+ gold::program_name, opt, msg);
+ usage();
}
-// Report version information.
+// Recognize input and output target names. The GNU linker accepts
+// these with --format and --oformat. This code is intended to be
+// minimally compatible. In practice for an ELF target this would be
+// the same target as the input files; that name always start with
+// "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex",
+// "binary", "ihex".
-int
-version(int, char**, char* opt, bool, gold::Command_line*)
+gold::General_options::Object_format
+string_to_object_format(const char* arg)
{
- gold::print_version(opt[0] == 'v' && opt[1] == '\0');
- ::exit(EXIT_SUCCESS);
- return 0;
+ if (strncmp(arg, "elf", 3) == 0)
+ return gold::General_options::OBJECT_FORMAT_ELF;
+ else if (strcmp(arg, "binary") == 0)
+ return gold::General_options::OBJECT_FORMAT_BINARY;
+ else
+ {
+ gold::gold_error(_("format '%s' not supported "
+ "(supported formats: elf, binary)"),
+ arg);
+ return gold::General_options::OBJECT_FORMAT_ELF;
+ }
}
// If the default sysroot is relocatable, try relocating it based on
get_relative_sysroot(const char* from)
{
char* path = make_relative_prefix(gold::program_name, from,
- TARGET_SYSTEM_ROOT);
+ TARGET_SYSTEM_ROOT);
if (path != NULL)
{
struct stat s;
if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode))
- return path;
+ return path;
free(path);
}
}
// Return the default sysroot. This is set by the --with-sysroot
-// option to configure.
+// option to configure. Note we do not free the return value of
+// get_relative_sysroot, which is a small memory leak, but is
+// necessary since we store this pointer directly in General_options.
-std::string
+const char*
get_default_sysroot()
{
const char* sysroot = TARGET_SYSTEM_ROOT;
if (*sysroot == '\0')
- return "";
+ return NULL;
if (TARGET_SYSTEM_ROOT_RELOCATABLE)
{
- char* path = get_relative_sysroot (BINDIR);
+ char* path = get_relative_sysroot(BINDIR);
if (path == NULL)
- path = get_relative_sysroot (TOOLBINDIR);
+ path = get_relative_sysroot(TOOLBINDIR);
if (path != NULL)
- {
- std::string ret = path;
- free(path);
- return ret;
- }
+ return path;
}
return sysroot;
}
-} // End anonymous namespace.
-
-namespace gold
+// Parse a long option. Such options have the form
+// <-|--><option>[=arg]. If "=arg" is not present but the option
+// takes an argument, the next word is taken to the be the argument.
+// If equals_only is set, then only the <option>=<arg> form is
+// accepted, not the <option><space><arg> form. Returns a One_option
+// struct or NULL if argv[i] cannot be parsed as a long option. In
+// the not-NULL case, *arg is set to the option's argument (NULL if
+// the option takes no argument), and *i is advanced past this option.
+// NOTE: it is safe for argv and arg to point to the same place.
+gold::options::One_option*
+parse_long_option(int argc, const char** argv, bool equals_only,
+ const char** arg, int* i)
{
+ const char* const this_argv = argv[*i];
-// Helper macros used to specify the options. We could also do this
-// using constructors, but then g++ would generate code to initialize
-// the array. We want the array to be initialized statically so that
-// we get better startup time.
-
-#define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \
- { short_option, long_option, doc, help, options::One_option::dash, \
- NULL, func, NULL, NULL, NULL }
-#define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \
- { short_option, long_option, doc, help, options::One_option::dash, \
- NULL, NULL, func, NULL, NULL }
-#define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \
- { short_option, long_option, doc, help, options::One_option::dash, \
- NULL, NULL, NULL, func, NULL }
-#define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \
- { short_option, long_option, doc, help, options::One_option::dash, \
- NULL, NULL, NULL, NULL, func }
-#define SPECIAL(short_option, long_option, doc, help, dash, func) \
- { short_option, long_option, doc, help, options::One_option::dash, \
- func, NULL, NULL, NULL, NULL }
-
-// Here is the actual list of options which we accept.
-
-const options::One_option
-options::Command_line_options::options[] =
-{
- GENERAL_NOARG('\0', "allow-shlib-undefined",
- N_("Allow unresolved references in shared libraries"),
- NULL, TWO_DASHES,
- &General_options::set_allow_shlib_undefined),
- GENERAL_NOARG('\0', "no-allow-shlib-undefined",
- N_("Do not allow unresolved references in shared libraries"),
- NULL, TWO_DASHES,
- &General_options::set_no_allow_shlib_undefined),
- POSDEP_NOARG('\0', "as-needed",
- N_("Only set DT_NEEDED for dynamic libs if used"),
- NULL, TWO_DASHES, &Position_dependent_options::set_as_needed),
- POSDEP_NOARG('\0', "no-as-needed",
- N_("Always DT_NEEDED for dynamic libs (default)"),
- NULL, TWO_DASHES, &Position_dependent_options::set_no_as_needed),
- POSDEP_NOARG('\0', "Bdynamic",
- N_("-l searches for shared libraries"),
- NULL, ONE_DASH,
- &Position_dependent_options::set_Bdynamic),
- POSDEP_NOARG('\0', "Bstatic",
- N_("-l does not search for shared libraries"),
- NULL, ONE_DASH,
- &Position_dependent_options::set_Bstatic),
- GENERAL_NOARG('\0', "Bsymbolic", N_("Bind defined symbols locally"),
- NULL, ONE_DASH, &General_options::set_Bsymbolic),
- POSDEP_ARG('b', "format", N_("Set input format (elf, binary)"),
- N_("-b FORMAT, --format FORMAT"), TWO_DASHES,
- &Position_dependent_options::set_format),
-#ifdef HAVE_ZLIB_H
-# define ZLIB_STR ",zlib"
-#else
-# define ZLIB_STR ""
-#endif
- GENERAL_ARG('\0', "compress-debug-sections",
- N_("Compress .debug_* sections in the output file "
- "(default is none)"),
- N_("--compress-debug-sections=[none" ZLIB_STR "]"),
- TWO_DASHES,
- &General_options::set_compress_debug_sections),
- GENERAL_NOARG('d', "define-common", N_("Define common symbols"),
- NULL, TWO_DASHES, &General_options::set_define_common),
- GENERAL_NOARG('\0', "dc", NULL, NULL, ONE_DASH,
- &General_options::set_define_common),
- GENERAL_NOARG('\0', "dp", NULL, NULL, ONE_DASH,
- &General_options::set_define_common),
- GENERAL_NOARG('\0', "no-define-common", N_("Do not define common symbols"),
- NULL, TWO_DASHES, &General_options::set_no_define_common),
- SPECIAL('\0', "defsym", N_("Define a symbol"),
- N_("--defsym SYMBOL=EXPRESSION"), TWO_DASHES,
- &add_to_defsym),
- GENERAL_NOARG('\0', "demangle", N_("Demangle C++ symbols in log messages"),
- NULL, TWO_DASHES, &General_options::set_demangle),
- GENERAL_NOARG('\0', "no-demangle",
- N_("Do not demangle C++ symbols in log messages"),
- NULL, TWO_DASHES, &General_options::set_no_demangle),
- GENERAL_NOARG('\0', "detect-odr-violations",
- N_("Try to detect violations of the One Definition Rule"),
- NULL, TWO_DASHES, &General_options::set_detect_odr_violations),
- GENERAL_ARG('e', "entry", N_("Set program start address"),
- N_("-e ADDRESS, --entry ADDRESS"), TWO_DASHES,
- &General_options::set_entry),
- GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"),
- NULL, TWO_DASHES, &General_options::set_export_dynamic),
- GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"),
- NULL, TWO_DASHES, &General_options::set_eh_frame_hdr),
- GENERAL_ARG('h', "soname", N_("Set shared library name"),
- N_("-h FILENAME, -soname FILENAME"), ONE_DASH,
- &General_options::set_soname),
- GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"),
- N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES,
- &General_options::set_dynamic_linker),
- SPECIAL('l', "library", N_("Search for library LIBNAME"),
- N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES,
- &library),
- GENERAL_ARG('L', "library-path", N_("Add directory to search path"),
- N_("-L DIR, --library-path DIR"), TWO_DASHES,
- &General_options::add_to_search_path),
- GENERAL_ARG('m', NULL, N_("Ignored for compatibility"), NULL, ONE_DASH,
- &General_options::ignore),
- GENERAL_ARG('o', "output", N_("Set output file name"),
- N_("-o FILE, --output FILE"), TWO_DASHES,
- &General_options::set_output),
- GENERAL_ARG('O', "optimize", N_("Optimize output file size"),
- N_("-O level"), ONE_DASH,
- &General_options::set_optimize),
- GENERAL_ARG('\0', "oformat", N_("Set output format (only binary supported)"),
- N_("--oformat FORMAT"), EXACTLY_TWO_DASHES,
- &General_options::set_oformat),
- GENERAL_NOARG('q', "emit-relocs", N_("Generate relocations in output"),
- NULL, TWO_DASHES, &General_options::set_emit_relocs),
- GENERAL_NOARG('r', "relocatable", N_("Generate relocatable output"), NULL,
- TWO_DASHES, &General_options::set_relocatable),
- // -R really means -rpath, but can mean --just-symbols for
- // compatibility with GNU ld. -rpath is always -rpath, so we list
- // it separately.
- SPECIAL('R', NULL, N_("Add DIR to runtime search path"),
- N_("-R DIR"), ONE_DASH, &handle_r_option),
- GENERAL_ARG('\0', "rpath", NULL, N_("-rpath DIR"), ONE_DASH,
- &General_options::add_to_rpath),
- SPECIAL('\0', "just-symbols", N_("Read only symbol values from file"),
- N_("-R FILE, --just-symbols FILE"), TWO_DASHES,
- &handle_just_symbols_option),
- GENERAL_ARG('\0', "rpath-link",
- N_("Add DIR to link time shared library search path"),
- N_("--rpath-link DIR"), TWO_DASHES,
- &General_options::add_to_rpath_link),
- GENERAL_NOARG('s', "strip-all", N_("Strip all symbols"), NULL,
- TWO_DASHES, &General_options::set_strip_all),
- GENERAL_NOARG('\0', "strip-debug-gdb",
- N_("Strip debug symbols that are unused by gdb "
- "(at least versions <= 6.7)"),
- NULL, TWO_DASHES, &General_options::set_strip_debug_gdb),
- // This must come after -Sdebug since it's a prefix of it.
- GENERAL_NOARG('S', "strip-debug", N_("Strip debugging information"), NULL,
- TWO_DASHES, &General_options::set_strip_debug),
- GENERAL_NOARG('\0', "shared", N_("Generate shared library"),
- NULL, ONE_DASH, &General_options::set_shared),
- GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"),
- NULL, ONE_DASH, &General_options::set_static),
- GENERAL_NOARG('\0', "stats", N_("Print resource usage statistics"),
- NULL, TWO_DASHES, &General_options::set_stats),
- GENERAL_ARG('\0', "sysroot", N_("Set target system root directory"),
- N_("--sysroot DIR"), TWO_DASHES, &General_options::set_sysroot),
- GENERAL_ARG('\0', "Tbss", N_("Set the address of the bss segment"),
- N_("-Tbss ADDRESS"), ONE_DASH,
- &General_options::set_Tbss),
- GENERAL_ARG('\0', "Tdata", N_("Set the address of the data segment"),
- N_("-Tdata ADDRESS"), ONE_DASH,
- &General_options::set_Tdata),
- GENERAL_ARG('\0', "Ttext", N_("Set the address of the text segment"),
- N_("-Ttext ADDRESS"), ONE_DASH,
- &General_options::set_Ttext),
- // This must come after -Ttext and friends since it's a prefix of
- // them.
- SPECIAL('T', "script", N_("Read linker script"),
- N_("-T FILE, --script FILE"), TWO_DASHES,
- &invoke_script),
- SPECIAL('\0', "version-script", N_("Read version script"),
- N_("--version-script FILE"), TWO_DASHES,
- &invoke_version_script),
- GENERAL_NOARG('\0', "threads", N_("Run the linker multi-threaded"),
- NULL, TWO_DASHES, &General_options::set_threads),
- GENERAL_NOARG('\0', "no-threads", N_("Do not run the linker multi-threaded"),
- NULL, TWO_DASHES, &General_options::set_no_threads),
- GENERAL_ARG('\0', "thread-count", N_("Number of threads to use"),
- N_("--thread-count COUNT"), TWO_DASHES,
- &General_options::set_thread_count),
- GENERAL_ARG('\0', "thread-count-initial",
- N_("Number of threads to use in initial pass"),
- N_("--thread-count-initial COUNT"), TWO_DASHES,
- &General_options::set_thread_count_initial),
- GENERAL_ARG('\0', "thread-count-middle",
- N_("Number of threads to use in middle pass"),
- N_("--thread-count-middle COUNT"), TWO_DASHES,
- &General_options::set_thread_count_middle),
- GENERAL_ARG('\0', "thread-count-final",
- N_("Number of threads to use in final pass"),
- N_("--thread-count-final COUNT"), TWO_DASHES,
- &General_options::set_thread_count_final),
- POSDEP_NOARG('\0', "whole-archive",
- N_("Include all archive contents"),
- NULL, TWO_DASHES,
- &Position_dependent_options::set_whole_archive),
- POSDEP_NOARG('\0', "no-whole-archive",
- N_("Include only needed archive contents"),
- NULL, TWO_DASHES,
- &Position_dependent_options::set_no_whole_archive),
-
- GENERAL_ARG('z', NULL,
- N_("Subcommands as follows:\n\
- -z execstack Mark output as requiring executable stack\n\
- -z noexecstack Mark output as not requiring executable stack\n\
- -z max-page-size=SIZE Set maximum page size to SIZE\n\
- -z common-page-size=SIZE Set common page size to SIZE"),
- N_("-z SUBCOMMAND"), ONE_DASH,
- &General_options::handle_z_option),
-
- SPECIAL('(', "start-group", N_("Start a library search group"), NULL,
- TWO_DASHES, &start_group),
- SPECIAL(')', "end-group", N_("End a library search group"), NULL,
- TWO_DASHES, &end_group),
- SPECIAL('\0', "help", N_("Report usage information"), NULL,
- TWO_DASHES, &help),
- SPECIAL('v', "version", N_("Report version information"), NULL,
- TWO_DASHES, &version),
- GENERAL_ARG('\0', "debug", N_("Turn on debugging (all,task,script)"),
- N_("--debug=TYPE"), TWO_DASHES,
- &General_options::handle_debug_option)
-};
-
-const int options::Command_line_options::options_size =
- sizeof (options) / sizeof (options[0]);
-
-// The -z options.
-
-const options::One_z_option
-options::Command_line_options::z_options[] =
-{
- { "execstack", &General_options::set_execstack, NULL },
- { "noexecstack", &General_options::set_noexecstack, NULL },
- { "max-page-size", NULL, &General_options::set_max_page_size },
- { "common-page-size", NULL, &General_options::set_common_page_size }
-};
+ const char* equals = strchr(this_argv, '=');
+ const char* option_start = this_argv + strspn(this_argv, "-");
+ std::string option(option_start,
+ equals ? equals - option_start : strlen(option_start));
-const int options::Command_line_options::z_options_size =
- sizeof(z_options) / sizeof(z_options[0]);
+ gold::options::Option_map::iterator it
+ = gold::options::long_options->find(option);
+ if (it == gold::options::long_options->end())
+ return NULL;
-// The --debug options.
+ gold::options::One_option* retval = it->second;
-const options::One_debug_option
-options::Command_line_options::debug_options[] =
-{
- { "all", DEBUG_ALL },
- { "task", DEBUG_TASK },
- { "script", DEBUG_SCRIPT }
-};
-
-const int options::Command_line_options::debug_options_size =
- sizeof(debug_options) / sizeof(debug_options[0]);
-
-// The default values for the general options.
+ // If the dash-count doesn't match, we fail.
+ if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>"
+ {
+ if (retval->dashes != gold::options::DASH_Z)
+ return NULL;
+ }
+ else if (this_argv[1] != '-') // one dash
+ {
+ if (retval->dashes != gold::options::ONE_DASH
+ && retval->dashes != gold::options::EXACTLY_ONE_DASH
+ && retval->dashes != gold::options::TWO_DASHES)
+ return NULL;
+ }
+ else // two dashes (or more!)
+ {
+ if (retval->dashes != gold::options::TWO_DASHES
+ && retval->dashes != gold::options::EXACTLY_TWO_DASHES
+ && retval->dashes != gold::options::ONE_DASH)
+ return NULL;
+ }
-General_options::General_options()
- : define_common_(false),
- user_set_define_common_(false),
- entry_(NULL),
- export_dynamic_(false),
- soname_(NULL),
- dynamic_linker_(NULL),
- search_path_(),
- optimization_level_(0),
- output_file_name_("a.out"),
- oformat_(OBJECT_FORMAT_ELF),
- oformat_string_(NULL),
- emit_relocs_(false),
- is_relocatable_(false),
- strip_(STRIP_NONE),
- allow_shlib_undefined_(false),
- symbolic_(false),
- compress_debug_sections_(NO_COMPRESSION),
- detect_odr_violations_(false),
- create_eh_frame_hdr_(false),
- rpath_(),
- rpath_link_(),
- is_shared_(false),
- is_static_(false),
- print_stats_(false),
- sysroot_(),
- bss_segment_address_(-1U), // -1 indicates value not set by user
- data_segment_address_(-1U),
- text_segment_address_(-1U),
- threads_(false),
- thread_count_initial_(0),
- thread_count_middle_(0),
- thread_count_final_(0),
- execstack_(EXECSTACK_FROM_INPUT),
- max_page_size_(0),
- common_page_size_(0),
- debug_(0)
-{
- // We initialize demangle_ based on the environment variable
- // COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
- // output of the linker, unless COLLECT_NO_DEMANGLE is set in the
- // environment. Acting the same way here lets us provide the same
- // interface by default.
- this->demangle_ = getenv("COLLECT_NO_DEMANGLE") == NULL;
-}
+ // Now that we know the option is good (or else bad in a way that
+ // will cause us to die), increment i to point past this argv.
+ ++(*i);
-// Handle the --oformat option.
+ // Figure out the option's argument, if any.
+ if (!retval->takes_argument())
+ {
+ if (equals)
+ usage(_("unexpected argument"), this_argv);
+ else
+ *arg = NULL;
+ }
+ else
+ {
+ if (equals)
+ *arg = equals + 1;
+ else if (*i < argc && !equals_only)
+ *arg = argv[(*i)++];
+ else
+ usage(_("missing argument"), this_argv);
+ }
-void
-General_options::set_oformat(const char* arg)
-{
- this->oformat_string_ = arg;
- this->oformat_ = string_to_object_format(arg);
-}
+ return retval;
+}
+
+// Parse a short option. Such options have the form -<option>[arg].
+// If "arg" is not present but the option takes an argument, the next
+// word is taken to the be the argument. If the option does not take
+// an argument, it may be followed by another short option. Returns a
+// One_option struct or NULL if argv[i] cannot be parsed as a short
+// option. In the not-NULL case, *arg is set to the option's argument
+// (NULL if the option takes no argument), and *i is advanced past
+// this option. This function keeps *i the same if we parsed a short
+// option that does not take an argument, that looks to be followed by
+// another short option in the same word.
+gold::options::One_option*
+parse_short_option(int argc, const char** argv, int pos_in_argv_i,
+ const char** arg, int* i)
+{
+ const char* const this_argv = argv[*i];
+
+ if (this_argv[0] != '-')
+ return NULL;
+
+ // We handle -z as a special case.
+ static gold::options::One_option dash_z("", gold::options::DASH_Z,
+ 'z', "", "-z", "Z-OPTION", NULL);
+ gold::options::One_option* retval = NULL;
+ if (this_argv[pos_in_argv_i] == 'z')
+ retval = &dash_z;
+ else
+ {
+ const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]);
+ if (char_as_int > 0 && char_as_int < 128)
+ retval = gold::options::short_options[char_as_int];
+ }
-// Handle the -z option.
+ if (retval == NULL)
+ return NULL;
-void
-General_options::handle_z_option(const char* arg)
-{
- // ARG may be a word, like "noexec", or it may be an option in its
- // own right, like "max-page-size=SIZE".
- const char* argarg = strchr(arg, '='); // the argument to the -z argument
- int arglen;
- if (argarg)
+ // Figure out the option's argument, if any.
+ if (!retval->takes_argument())
{
- arglen = argarg - arg;
- argarg++;
+ *arg = NULL;
+ // We only advance past this argument if it's the only one in argv.
+ if (this_argv[pos_in_argv_i + 1] == '\0')
+ ++(*i);
}
else
- arglen = strlen(arg);
+ {
+ // If we take an argument, we'll eat up this entire argv entry.
+ ++(*i);
+ if (this_argv[pos_in_argv_i + 1] != '\0')
+ *arg = this_argv + pos_in_argv_i + 1;
+ else if (*i < argc)
+ *arg = argv[(*i)++];
+ else
+ usage(_("missing argument"), this_argv);
+ }
- const int z_options_size = options::Command_line_options::z_options_size;
- const gold::options::One_z_option* z_options =
- gold::options::Command_line_options::z_options;
- for (int i = 0; i < z_options_size; ++i)
+ // If we're a -z option, we need to parse our argument as a
+ // long-option, e.g. "-z stacksize=8192".
+ if (retval == &dash_z)
{
- if (memcmp(arg, z_options[i].name, arglen) == 0
- && z_options[i].name[arglen] == '\0')
- {
- if (z_options[i].set_noarg && argarg)
- gold::gold_fatal(_("-z subcommand does not take an argument: %s\n"),
- z_options[i].name);
- else if (z_options[i].set_arg && !argarg)
- gold::gold_fatal(_("-z subcommand requires an argument: %s\n"),
- z_options[i].name);
- else if (z_options[i].set_arg)
- (this->*(z_options[i].set_arg))(argarg);
- else
- (this->*(z_options[i].set_noarg))(true);
- return;
- }
+ int dummy_i = 0;
+ const char* dash_z_arg = *arg;
+ retval = parse_long_option(1, arg, true, arg, &dummy_i);
+ if (retval == NULL)
+ usage(_("unknown -z option"), dash_z_arg);
}
- gold::gold_fatal(_("%s: unrecognized -z subcommand: %s\n"),
- program_name, arg);
+ return retval;
}
-// Handle the --debug option.
+} // End anonymous namespace.
-void
-General_options::handle_debug_option(const char* arg)
+namespace gold
{
- const int debug_options_size =
- options::Command_line_options::debug_options_size;
- const gold::options::One_debug_option* debug_options =
- options::Command_line_options::debug_options;
- for (int i = 0; i < debug_options_size; ++i)
- {
- if (strcmp(arg, debug_options[i].name) == 0)
- {
- this->set_debug(debug_options[i].debug_flags);
- return;
- }
- }
- fprintf(stderr, _("%s: unrecognized --debug subcommand: %s\n"),
- program_name, arg);
- ::exit(EXIT_FAILURE);
+General_options::General_options()
+ : execstack_status_(General_options::EXECSTACK_FROM_INPUT), static_(false)
+{
+}
+
+General_options::Object_format
+General_options::format_enum() const
+{
+ return string_to_object_format(this->format());
+}
+
+General_options::Object_format
+General_options::oformat_enum() const
+{
+ return string_to_object_format(this->oformat());
}
// Add the sysroot, if any, to the search paths.
void
General_options::add_sysroot()
{
- if (this->sysroot_.empty())
+ if (this->sysroot() == NULL || this->sysroot()[0] == '\0')
{
- this->sysroot_ = get_default_sysroot();
- if (this->sysroot_.empty())
- return;
+ this->set_sysroot(get_default_sysroot());
+ if (this->sysroot() == NULL || this->sysroot()[0] == '\0')
+ return;
}
- const char* sysroot = this->sysroot_.c_str();
- char* canonical_sysroot = lrealpath(sysroot);
+ char* canonical_sysroot = lrealpath(this->sysroot());
- for (Dir_list::iterator p = this->search_path_.begin();
- p != this->search_path_.end();
+ for (Dir_list::iterator p = this->library_path_.value.begin();
+ p != this->library_path_.value.end();
++p)
- p->add_sysroot(sysroot, canonical_sysroot);
+ p->add_sysroot(this->sysroot(), canonical_sysroot);
free(canonical_sysroot);
}
-// The default values for the position dependent options.
+// Set up variables and other state that isn't set up automatically by
+// the parse routine, and ensure options don't contradict each other
+// and are otherwise kosher.
-Position_dependent_options::Position_dependent_options()
- : do_static_search_(false),
- as_needed_(false),
- include_whole_archive_(false),
- input_format_(General_options::OBJECT_FORMAT_ELF)
+void
+General_options::finalize()
{
-}
+ // Normalize the strip modifiers. They have a total order:
+ // strip_all > strip_debug > strip_debug_gdb. If one is true, set
+ // all beneath it to true as well.
+ if (this->strip_all())
+ this->set_strip_debug(true);
+ if (this->strip_debug())
+ this->set_strip_debug_gdb(true);
-// Set the input format.
+ // If the user specifies both -s and -r, convert the -s to -S.
+ // -r requires us to keep externally visible symbols!
+ if (this->strip_all() && this->relocatable())
+ {
+ this->set_strip_all(false);
+ gold_assert(this->strip_debug());
+ }
-void
-Position_dependent_options::set_format(const char* arg)
-{
- this->input_format_ = string_to_object_format(arg);
+ // For us, -dc and -dp are synonyms for --define-common.
+ if (this->dc())
+ this->set_define_common(true);
+ if (this->dp())
+ this->set_define_common(true);
+
+ // We also set --define-common if we're not relocatable, as long as
+ // the user didn't explicitly ask for something different.
+ if (!this->user_set_define_common())
+ this->set_define_common(!this->relocatable());
+
+ // execstack_status_ is a three-state variable; update it based on
+ // -z [no]execstack.
+ if (this->execstack())
+ this->set_execstack_status(EXECSTACK_YES);
+ else if (this->noexecstack())
+ this->set_execstack_status(EXECSTACK_NO);
+
+ // If --thread_count is specified, it applies to
+ // --thread-count-{initial,middle,final}, though it doesn't override
+ // them.
+ if (this->thread_count() > 0 && this->thread_count_initial() == 0)
+ this->set_thread_count_initial(this->thread_count());
+ if (this->thread_count() > 0 && this->thread_count_middle() == 0)
+ this->set_thread_count_middle(this->thread_count());
+ if (this->thread_count() > 0 && this->thread_count_final() == 0)
+ this->set_thread_count_final(this->thread_count());
+
+ // Even if they don't specify it, we add -L /lib and -L /usr/lib.
+ // FIXME: We should only do this when configured in native mode.
+ this->add_to_library_path_with_sysroot("/lib");
+ this->add_to_library_path_with_sysroot("/usr/lib");
+
+ // Normalize library_path() by adding the sysroot to all directories
+ // in the path, as appropriate.
+ this->add_sysroot();
+
+ // Now that we've normalized the options, check for contradictory ones.
+ if (this->shared() && this->relocatable())
+ gold_fatal(_("-shared and -r are incompatible"));
+
+ if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF
+ && (this->shared() || this->relocatable()))
+ gold_fatal(_("binary output format not compatible with -shared or -r"));
+
+ // FIXME: we can/should be doing a lot more sanity checking here.
}
// Search_directory methods.
void
Search_directory::add_sysroot(const char* sysroot,
- const char* canonical_sysroot)
+ const char* canonical_sysroot)
{
gold_assert(*sysroot != '\0');
if (this->put_in_sysroot_)
{
if (!IS_DIR_SEPARATOR(this->name_[0])
- && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1]))
- this->name_ = '/' + this->name_;
+ && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1]))
+ this->name_ = '/' + this->name_;
this->name_ = sysroot + this->name_;
this->is_in_sysroot_ = true;
}
int canonical_name_len = strlen(canonical_name);
int canonical_sysroot_len = strlen(canonical_sysroot);
if (canonical_name_len > canonical_sysroot_len
- && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len]))
- {
- canonical_name[canonical_sysroot_len] = '\0';
- if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0)
- this->is_in_sysroot_ = true;
- }
+ && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len]))
+ {
+ canonical_name[canonical_sysroot_len] = '\0';
+ if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0)
+ this->is_in_sysroot_ = true;
+ }
free(canonical_name);
}
}
void
Input_arguments::start_group()
{
- gold_assert(!this->in_group_);
+ if (this->in_group_)
+ gold_fatal(_("May not nest groups"));
Input_file_group* group = new Input_file_group();
this->input_argument_list_.push_back(Input_argument(group));
this->in_group_ = true;
void
Input_arguments::end_group()
{
- gold_assert(this->in_group_);
+ if (!this->in_group_)
+ gold_fatal(_("Group end without group start"));
this->in_group_ = false;
}
// Command_line options.
Command_line::Command_line()
- : options_(), position_options_(), script_options_(), inputs_()
{
}
-// Process the command line options. For process_one_option,
-// i is the index of argv to process next, and the return value
-// is the index of the next option to process (i+1 or i+2, or argc
-// to indicate processing is done). no_more_options is set to true
-// if (and when) "--" is seen as an option.
+// Process the command line options. For process_one_option, i is the
+// index of argv to process next, and must be an option (that is,
+// start with a dash). The return value is the index of the next
+// option to process (i+1 or i+2, or argc to indicate processing is
+// done). no_more_options is set to true if (and when) "--" is seen
+// as an option.
int
-Command_line::process_one_option(int argc, char** argv, int i,
+Command_line::process_one_option(int argc, const char** argv, int i,
bool* no_more_options)
{
- const int options_size = options::Command_line_options::options_size;
- const options::One_option* options = options::Command_line_options::options;
- gold_assert(i < argc);
+ gold_assert(argv[i][0] == '-' && !(*no_more_options));
- if (argv[i][0] != '-' || *no_more_options)
+ // If we are reading "--", then just set no_more_options and return.
+ if (argv[i][1] == '-' && argv[i][2] == '\0')
{
- this->add_file(argv[i], false);
+ *no_more_options = true;
return i + 1;
}
- // Option starting with '-'.
- int dashes = 1;
- if (argv[i][1] == '-')
- {
- dashes = 2;
- if (argv[i][2] == '\0')
- {
- *no_more_options = true;
- return i + 1;
- }
- }
+ int new_i = i;
+ options::One_option* option = NULL;
+ const char* arg = NULL;
- // Look for a long option match.
- char* opt = argv[i] + dashes;
- char first = opt[0];
- int skiparg = 0;
- char* arg = strchr(opt, '=');
- bool argument_with_equals = arg != NULL;
- if (arg != NULL)
- {
- *arg = '\0';
- ++arg;
- }
- else if (i + 1 < argc)
+ // First, try to process argv as a long option.
+ option = parse_long_option(argc, argv, false, &arg, &new_i);
+ if (option)
{
- arg = argv[i + 1];
- skiparg = 1;
+ option->reader->parse_to_value(argv[i], arg, this, &this->options_);
+ return new_i;
}
- int j;
- for (j = 0; j < options_size; ++j)
+ // Now, try to process argv as a short option. Since several short
+ // options can be combined in one argv, we may have to parse a lot
+ // until we're done reading this argv.
+ int pos_in_argv_i = 1;
+ while (new_i == i)
{
- if (options[j].long_option != NULL
- && (dashes == 2
- || (options[j].dash
- != options::One_option::EXACTLY_TWO_DASHES))
- && first == options[j].long_option[0]
- && strcmp(opt, options[j].long_option) == 0)
- {
- if (options[j].special)
- {
- // Restore the '=' we clobbered above.
- if (arg != NULL && skiparg == 0)
- arg[-1] = '=';
- i += options[j].special(argc - i, argv + i, opt, true, this);
- }
- else
- {
- if (!options[j].takes_argument())
- {
- if (argument_with_equals)
- this->usage(_("unexpected argument"), argv[i]);
- arg = NULL;
- skiparg = 0;
- }
- else
- {
- if (arg == NULL)
- this->usage(_("missing argument"), argv[i]);
- }
- this->apply_option(options[j], arg);
- i += skiparg + 1;
- }
- break;
- }
+ option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i);
+ if (!option)
+ break;
+ option->reader->parse_to_value(argv[i], arg, this, &this->options_);
+ ++pos_in_argv_i;
}
- if (j < options_size)
- return i;
-
- // If we saw two dashes, we needed to have seen a long option.
- if (dashes == 2)
- this->usage(_("unknown option"), argv[i]);
-
- // Look for a short option match. There may be more than one
- // short option in a given argument.
- bool done = false;
- char* s = argv[i] + 1;
- ++i;
- while (*s != '\0' && !done)
- {
- char opt = *s;
- int j;
- for (j = 0; j < options_size; ++j)
- {
- if (options[j].short_option == opt)
- {
- if (options[j].special)
- {
- // Undo the argument skip done above.
- --i;
- i += options[j].special(argc - i, argv + i, s, false,
- this);
- done = true;
- }
- else
- {
- arg = NULL;
- if (options[j].takes_argument())
- {
- if (s[1] != '\0')
- {
- arg = s + 1;
- done = true;
- }
- else if (i < argc)
- {
- arg = argv[i];
- ++i;
- }
- else
- this->usage(_("missing argument"), opt);
- }
- this->apply_option(options[j], arg);
- }
- break;
- }
- }
+ if (option)
+ return new_i;
- if (j >= options_size)
- this->usage(_("unknown option"), *s);
-
- ++s;
- }
- return i;
+ // I guess it's neither a long option nor a short option.
+ usage(_("unknown option"), argv[i]);
+ return argc;
}
void
-Command_line::process(int argc, char** argv)
+Command_line::process(int argc, const char** argv)
{
bool no_more_options = false;
int i = 0;
while (i < argc)
- i = process_one_option(argc, argv, i, &no_more_options);
-
- if (this->inputs_.in_group())
{
- fprintf(stderr, _("%s: missing group end\n"), program_name);
- this->usage();
- }
-
- // FIXME: We should only do this when configured in native mode.
- this->options_.add_to_search_path_with_sysroot("/lib");
- this->options_.add_to_search_path_with_sysroot("/usr/lib");
-
- this->options_.add_sysroot();
-
- // Ensure options don't contradict each other and are otherwise kosher.
- this->normalize_options();
-}
-
-// Extract an option argument for a special option. LONGNAME is the
-// long name of the option. This sets *PRET to the return value for
-// the special function handler to skip to the next option.
-
-const char*
-Command_line::get_special_argument(const char* longname, int argc, char** argv,
- const char* arg, bool long_option,
- int *pret)
-{
- if (long_option)
- {
- size_t longlen = strlen(longname);
- gold_assert(strncmp(arg, longname, longlen) == 0);
- arg += longlen;
- if (*arg == '=')
- {
- *pret = 1;
- return arg + 1;
- }
- else if (argc > 1)
- {
- gold_assert(*arg == '\0');
- *pret = 2;
- return argv[1];
- }
- }
- else
- {
- if (arg[1] != '\0')
- {
- *pret = 1;
- return arg + 1;
- }
- else if (argc > 1)
- {
- *pret = 2;
- return argv[1];
- }
- }
-
- this->usage(_("missing argument"), arg);
-}
-
-// Ensure options don't contradict each other and are otherwise kosher.
-
-void
-Command_line::normalize_options()
-{
- if (this->options_.shared() && this->options_.relocatable())
- gold_fatal(_("-shared and -r are incompatible"));
-
- if (this->options_.oformat_enum() != General_options::OBJECT_FORMAT_ELF
- && (this->options_.shared() || this->options_.relocatable()))
- gold_fatal(_("binary output format not compatible with -shared or -r"));
-
- // If the user specifies both -s and -r, convert the -s as -S.
- // -r requires us to keep externally visible symbols!
- if (this->options_.strip_all() && this->options_.relocatable())
- {
- // Clears the strip_all() status, replacing it with strip_debug().
- this->options_.set_strip_debug(true);
- }
-
- // Set default value for define_common.
- if (!this->options_.user_set_define_common())
- this->options_.set_define_common(!this->options_.relocatable());
-
- // FIXME: we can/should be doing a lot more sanity checking here.
-}
-
-
-// Apply a command line option.
-
-void
-Command_line::apply_option(const options::One_option& opt,
- const char* arg)
-{
- if (arg == NULL)
- {
- if (opt.general_noarg)
- (this->options_.*(opt.general_noarg))(true);
- else if (opt.dependent_noarg)
- (this->position_options_.*(opt.dependent_noarg))(true);
- else
- gold_unreachable();
- }
- else
- {
- if (opt.general_arg)
- (this->options_.*(opt.general_arg))(arg);
- else if (opt.dependent_arg)
- (this->position_options_.*(opt.dependent_arg))(arg);
+ this->position_options_.copy_from_options(this->options());
+ if (no_more_options || argv[i][0] != '-')
+ {
+ Input_file_argument file(argv[i], false, "", false,
+ this->position_options_);
+ this->inputs_.add_file(file);
+ ++i;
+ }
else
- gold_unreachable();
+ i = process_one_option(argc, argv, i, &no_more_options);
}
-}
-// Add an input file or library.
-
-void
-Command_line::add_file(const char* name, bool is_lib)
-{
- Input_file_argument file(name, is_lib, "", false, this->position_options_);
- this->inputs_.add_file(file);
-}
-
-// Handle the -l option, which requires special treatment.
-
-int
-Command_line::process_l_option(int argc, char** argv, char* arg,
- bool long_option)
-{
- int ret;
- const char* libname = this->get_special_argument("library", argc, argv, arg,
- long_option, &ret);
- this->add_file(libname, true);
- return ret;
-}
-
-// Handle the --start-group option.
-
-void
-Command_line::start_group(const char* arg)
-{
if (this->inputs_.in_group())
- this->usage(_("may not nest groups"), arg);
- this->inputs_.start_group();
-}
-
-// Handle the --end-group option.
-
-void
-Command_line::end_group(const char* arg)
-{
- if (!this->inputs_.in_group())
- this->usage(_("group end without group start"), arg);
- this->inputs_.end_group();
-}
-
-// Report a usage error. */
-
-void
-Command_line::usage()
-{
- fprintf(stderr,
- _("%s: use the --help option for usage information\n"),
- program_name);
- ::exit(EXIT_FAILURE);
-}
-
-void
-Command_line::usage(const char* msg, const char *opt)
-{
- fprintf(stderr,
- _("%s: %s: %s\n"),
- program_name, opt, msg);
- this->usage();
-}
+ {
+ fprintf(stderr, _("%s: missing group end\n"), program_name);
+ usage();
+ }
-void
-Command_line::usage(const char* msg, char opt)
-{
- fprintf(stderr,
- _("%s: -%c: %s\n"),
- program_name, opt, msg);
- this->usage();
+ // Normalize the options and ensure they don't contradict each other.
+ this->options_.finalize();
}
} // End namespace gold.
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
-// Command_line
-// Holds everything we get from the command line.
// General_options (from Command_line::options())
-// Options which are not position dependent.
+// All the options (a.k.a. command-line flags)
// Input_argument (from Command_line::inputs())
// The list of input files, including -l options.
-// Position_dependent_options (from Input_argument::options())
-// Position dependent options which apply to this argument.
+// Command_line
+// Everything we get from the command line -- the General_options
+// plus the Input_arguments.
+//
+// There are also some smaller classes, such as
+// Position_dependent_options which hold a subset of General_options
+// that change as options are parsed (as opposed to the usual behavior
+// of the last instance of that option specified on the commandline wins).
#ifndef GOLD_OPTIONS_H
#define GOLD_OPTIONS_H
{
class Command_line;
+class General_options;
+class Search_directory;
class Input_file_group;
class Position_dependent_options;
class Target;
+// The nested namespace is to contain all the global variables and
+// structs that need to be defined in the .h file, but do not need to
+// be used outside this class.
namespace options
{
+typedef std::vector<Search_directory> Dir_list;
+
+// These routines convert from a string option to various types.
+// Each gives a fatal error if it cannot parse the argument.
+
+extern void
+parse_bool(const char* option_name, const char* arg, bool* retval);
+
+extern void
+parse_uint(const char* option_name, const char* arg, int* retval);
+
+extern void
+parse_uint64(const char* option_name, const char* arg, uint64_t *retval);
+
+extern void
+parse_string(const char* option_name, const char* arg, const char** retval);
+
+extern void
+parse_dirlist(const char* option_name, const char* arg, Dir_list* retval);
+
+extern void
+parse_choices(const char* option_name, const char* arg, const char** retval,
+ const char* choices[], int num_choices);
+
+struct Struct_var;
+
+// Most options have both a shortname (one letter) and a longname.
+// This enum controls how many dashes are expected for longname access
+// -- shortnames always use one dash. Most longnames will accept
+// either one dash or two; the only difference between ONE_DASH and
+// TWO_DASHES is how we print the option in --help. However, some
+// longnames require two dashes, and some require only one. The
+// special value DASH_Z means that the option is preceded by "-z".
+enum Dashes
+{
+ ONE_DASH, TWO_DASHES, EXACTLY_ONE_DASH, EXACTLY_TWO_DASHES, DASH_Z
+};
+
+// LONGNAME is the long-name of the option with dashes converted to
+// underscores, or else the short-name if the option has no long-name.
+// It is never the empty string.
+// DASHES is an instance of the Dashes enum: ONE_DASH, TWO_DASHES, etc.
+// SHORTNAME is the short-name of the option, as a char, or '\0' if the
+// option has no short-name. If the option has no long-name, you
+// should specify the short-name in *both* VARNAME and here.
+// DEFAULT_VALUE is the value of the option if not specified on the
+// commandline, as a string.
+// HELPSTRING is the descriptive text used with the option via --help
+// HELPARG is how you define the argument to the option.
+// --help output is "-shortname HELPARG, --longname HELPARG: HELPSTRING"
+// HELPARG should be NULL iff the option is a bool and takes no arg.
+// READER provides parse_to_value, which is a function that will convert
+// a char* argument into the proper type and store it in some variable.
+// A One_option struct initializes itself with the global list of options
+// at constructor time, so be careful making one of these.
+struct One_option
+{
+ std::string longname;
+ Dashes dashes;
+ char shortname;
+ const char* default_value;
+ const char* helpstring;
+ const char* helparg;
+ Struct_var* reader;
+
+ One_option(const char* ln, Dashes d, char sn, const char* dv,
+ const char* hs, const char* ha, Struct_var* r)
+ : longname(ln), dashes(d), shortname(sn), default_value(dv ? dv : ""),
+ helpstring(hs), helparg(ha), reader(r)
+ {
+ // In longname, we convert all underscores to dashes, since GNU
+ // style uses dashes in option names. longname is likely to have
+ // underscores in it because it's also used to declare a C++
+ // function.
+ const char* pos = strchr(this->longname.c_str(), '_');
+ for (; pos; pos = strchr(pos, '_'))
+ this->longname[pos - this->longname.c_str()] = '-';
+
+ // We only register ourselves if our helpstring is not NULL. This
+ // is to support the "no-VAR" boolean variables, which we
+ // conditionally turn on by defining "no-VAR" help text.
+ if (this->helpstring)
+ this->register_option();
+ }
+
+ // This option takes an argument iff helparg is not NULL.
+ bool
+ takes_argument() const
+ { return this->helparg != NULL; }
+
+ // Register this option with the global list of options.
+ void
+ register_option();
+
+ // Print this option to stdout (used with --help).
+ void
+ print() const;
+};
+
+// All options have a Struct_##varname that inherits from this and
+// actually implements parse_to_value for that option.
+struct Struct_var
+{
+ // OPTION: the name of the option as specified on the commandline,
+ // including leading dashes, and any text following the option:
+ // "-O", "--defsym=mysym=0x1000", etc.
+ // ARG: the arg associated with this option, or NULL if the option
+ // takes no argument: "2", "mysym=0x1000", etc.
+ // CMDLINE: the global Command_line object. Used by DEFINE_special.
+ // OPTIONS: the global General_options object. Used by DEFINE_special.
+ virtual void
+ parse_to_value(const char* option, const char* arg,
+ Command_line* cmdline, General_options* options) = 0;
+ virtual
+ ~Struct_var() // To make gcc happy.
+ { }
+};
-class Command_line_options;
-struct One_option;
-struct One_z_option;
-struct One_debug_option;
+// This is for "special" options that aren't of any predefined type.
+struct Struct_special : public Struct_var
+{
+ // If you change this, change the parse-fn in DEFINE_special as well.
+ typedef void (General_options::*Parse_function)(const char*, const char*,
+ Command_line*);
+ Struct_special(const char* varname, Dashes dashes, char shortname,
+ Parse_function parse_function,
+ const char* helpstring, const char* helparg)
+ : option(varname, dashes, shortname, "", helpstring, helparg, this),
+ parse(parse_function)
+ { }
+
+ void parse_to_value(const char* option, const char* arg,
+ Command_line* cmdline, General_options* options)
+ { (options->*(this->parse))(option, arg, cmdline); }
+
+ One_option option;
+ Parse_function parse;
+};
+
+} // End namespace options.
+
+
+// These are helper macros use by DEFINE_uint64/etc below.
+// This macro is used inside the General_options_ class, so defines
+// var() and set_var() as General_options methods. Arguments as are
+// for the constructor for One_option. param_type__ is the same as
+// type__ for built-in types, and "const type__ &" otherwise.
+#define DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ default_value_as_string__, helpstring__, helparg__, \
+ type__, param_type__, parse_fn__) \
+ public: \
+ param_type__ \
+ varname__() const \
+ { return this->varname__##_.value; } \
+ \
+ bool \
+ user_set_##varname__() const \
+ { return this->varname__##_.user_set_via_option; } \
+ \
+ private: \
+ struct Struct_##varname__ : public options::Struct_var \
+ { \
+ Struct_##varname__() \
+ : option(#varname__, dashes__, shortname__, default_value_as_string__, \
+ helpstring__, helparg__, this), \
+ user_set_via_option(false), value(default_value__) \
+ { } \
+ \
+ void \
+ parse_to_value(const char* option_name, const char* arg, \
+ Command_line*, General_options*) \
+ { \
+ parse_fn__(option_name, arg, &this->value); \
+ this->user_set_via_option = true; \
+ } \
+ \
+ options::One_option option; \
+ bool user_set_via_option; \
+ type__ value; \
+ }; \
+ Struct_##varname__ varname__##_; \
+ void \
+ set_##varname__(param_type__ value) \
+ { this->varname__##_.value = value; }
+
+// These macros allow for easy addition of a new commandline option.
+
+// If no_helpstring__ is not NULL, then in addition to creating
+// VARNAME, we also create an option called no-VARNAME.
+#define DEFINE_bool(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, no_helpstring__) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ default_value__ ? "true" : "false", helpstring__, NULL, \
+ bool, bool, options::parse_bool) \
+ struct Struct_no_##varname__ : public options::Struct_var \
+ { \
+ Struct_no_##varname__() : option("no-" #varname__, dashes__, '\0', \
+ default_value__ ? "false" : "true", \
+ no_helpstring__, NULL, this) \
+ { } \
+ \
+ void \
+ parse_to_value(const char*, const char*, \
+ Command_line*, General_options* options) \
+ { options->set_##varname__(false); } \
+ \
+ options::One_option option; \
+ }; \
+ Struct_no_##varname__ no_##varname__##_initializer_
+
+#define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, helparg__) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ #default_value__, helpstring__, helparg__, \
+ int, int, options::parse_uint)
+
+#define DEFINE_uint64(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, helparg__) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ #default_value__, helpstring__, helparg__, \
+ uint64_t, uint64_t, options::parse_uint64)
+
+#define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, helparg__) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ default_value__, helpstring__, helparg__, \
+ const char*, const char*, options::parse_string)
+
+// This is like DEFINE_string, but we convert each occurrence to a
+// Search_directory and store it in a vector. Thus we also have the
+// add_to_VARNAME() method, to append to the vector.
+#define DEFINE_dirlist(varname__, dashes__, shortname__, \
+ helpstring__, helparg__) \
+ DEFINE_var(varname__, dashes__, shortname__, , \
+ "", helpstring__, helparg__, options::Dir_list, \
+ const options::Dir_list&, options::parse_dirlist) \
+ void \
+ add_to_##varname__(const char* new_value) \
+ { options::parse_dirlist(NULL, new_value, &this->varname__##_.value); } \
+ void \
+ add_search_directory_to_##varname__(const Search_directory& dir) \
+ { this->varname__##_.value.push_back(dir); }
+
+// When you have a list of possible values (expressed as string)
+// After helparg__ should come an initializer list, like
+// {"foo", "bar", "baz"}
+#define DEFINE_enum(varname__, dashes__, shortname__, default_value__, \
+ helpstring__, helparg__, ...) \
+ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
+ default_value__, helpstring__, helparg__, \
+ const char*, const char*, parse_choices_##varname__) \
+ private: \
+ static void parse_choices_##varname__(const char* option_name, \
+ const char* arg, \
+ const char** retval) { \
+ const char* choices[] = __VA_ARGS__; \
+ options::parse_choices(option_name, arg, retval, \
+ choices, sizeof(choices) / sizeof(*choices)); \
+ }
+
+// This is used for non-standard flags. It defines no functions; it
+// just calls General_options::parse_VARNAME whenever the flag is
+// seen. We declare parse_VARNAME as a static member of
+// General_options; you are responsible for defining it there.
+// helparg__ should be NULL iff this special-option is a boolean.
+#define DEFINE_special(varname__, dashes__, shortname__, \
+ helpstring__, helparg__) \
+ private: \
+ void parse_##varname__(const char* option, const char* arg, \
+ Command_line* inputs); \
+ struct Struct_##varname__ : public options::Struct_special \
+ { \
+ Struct_##varname__() \
+ : options::Struct_special(#varname__, dashes__, shortname__, \
+ &General_options::parse_##varname__, \
+ helpstring__, helparg__) \
+ { } \
+ }; \
+ Struct_##varname__ varname__##_initializer_
-} // End namespace gold::options.
// A directory to search. For each directory we record whether it is
// in the sysroot. We need to know this so that, if a linker script
bool is_in_sysroot_;
};
-// The position independent options which apply to the whole link.
-// There are a lot of them.
-
class General_options
{
- public:
- enum Object_format
- {
- // Ordinary ELF.
- OBJECT_FORMAT_ELF,
- // Straight binary format.
- OBJECT_FORMAT_BINARY
- };
-
- General_options();
+ private:
+ // NOTE: For every option that you add here, also consider if you
+ // should add it to Position_dependent_options.
+ DEFINE_special(help, options::TWO_DASHES, '\0',
+ _("Report usage information"), NULL);
+ DEFINE_special(version, options::TWO_DASHES, 'v',
+ _("Report version information"), NULL);
+
+ DEFINE_bool(allow_shlib_undefined, options::TWO_DASHES, '\0', false,
+ _("Allow unresolved references in shared libraries"),
+ _("Do not allow unresolved references in shared libraries"));
+
+ DEFINE_bool(as_needed, options::TWO_DASHES, '\0', false,
+ _("Only set DT_NEEDED for dynamic libs if used"),
+ _("Always DT_NEEDED for dynamic libs"));
+
+ DEFINE_bool(Bdynamic, options::ONE_DASH, '\0', true,
+ _("-l searches for shared libraries"), NULL);
+ // Bstatic affects the same variable as Bdynamic, so we have to use
+ // the "special" macro to make that happen.
+ DEFINE_special(Bstatic, options::ONE_DASH, '\0',
+ _("-l does not search for shared libraries"), NULL);
+
+ DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false,
+ _("Bind defined symbols locally"), NULL);
+
+ DEFINE_enum(format, options::TWO_DASHES, 'b', "elf",
+ _("Set input format"), _("[elf,binary]"),
+ {"elf", "binary",
+ "elf32-i386", "elf32-little", "elf32-big",
+ "elf64-x86_64", "elf64-little", "elf64-big"});
- // -d: define common symbols.
- bool
- define_common() const
- { return this->define_common_; }
+#ifdef HAVE_ZLIB_H
+ DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none",
+ _("Compress .debug_* sections in the output file"),
+ _("[none,zlib]"),
+ {"none", "zlib"});
+#else
+ DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none",
+ _("Compress .debug_* sections in the output file"),
+ _("[none]"),
+ {"none"});
+#endif
- // -e: set entry address.
- const char*
- entry() const
- { return this->entry_; }
+ DEFINE_bool(define_common, options::TWO_DASHES, 'd', false,
+ _("Define common symbols"),
+ _("Do not define common symbols"));
+ DEFINE_bool(dc, options::ONE_DASH, '\0', false,
+ _("Alias for -d"), NULL);
+ DEFINE_bool(dp, options::ONE_DASH, '\0', false,
+ _("Alias for -d"), NULL);
- // -E: export dynamic symbols.
- bool
- export_dynamic() const
- { return this->export_dynamic_; }
+ DEFINE_special(defsym, options::TWO_DASHES, '\0',
+ _("Define a symbol"), _("SYMBOL=EXPRESSION"));
- // -h: shared library name.
- const char*
- soname() const
- { return this->soname_; }
+ DEFINE_bool(demangle, options::TWO_DASHES, '\0',
+ getenv("COLLECT_NO_DEMANGLE") == NULL,
+ _("Demangle C++ symbols in log messages"),
+ _("Do not demangle C++ symbols in log messages"));
- // -I: dynamic linker name.
- const char*
- dynamic_linker() const
- { return this->dynamic_linker_; }
+ DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false,
+ _("Try to detect violations of the One Definition Rule"),
+ NULL);
+
+ DEFINE_string(entry, options::TWO_DASHES, 'e', NULL,
+ _("Set program start address"), _("ADDRESS"));
+
+ DEFINE_bool(export_dynamic, options::TWO_DASHES, 'E', false,
+ _("Export all dynamic symbols"), NULL);
- // -L: Library search path.
- typedef std::vector<Search_directory> Dir_list;
+ DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
+ _("Create exception frame header"), NULL);
+
+ DEFINE_string(soname, options::ONE_DASH, 'h', NULL,
+ _("Set shared library name"), _("FILENAME"));
+
+ DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL,
+ _("Set dynamic linker path"), _("PROGRAM"));
+
+ DEFINE_special(library, options::TWO_DASHES, 'l',
+ _("Search for library LIBNAME"), _("LIBNAME"));
- const Dir_list&
- library_path() const
- { return this->search_path_; }
+ DEFINE_dirlist(library_path, options::TWO_DASHES, 'L',
+ _("Add directory to search path"), _("DIR"));
+
+ DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
+ _("Ignored for compatibility"), _("EMULATION"));
+
+ DEFINE_string(output, options::TWO_DASHES, 'o', "a.out",
+ _("Set output file name"), _("FILE"));
+
+ DEFINE_uint(optimize, options::EXACTLY_ONE_DASH, 'O', 0,
+ _("Optimize output file size"), _("LEVEL"));
+
+ DEFINE_enum(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf",
+ _("Set output format"), _("[binary]"),
+ {"elf", "binary"});
+
+ DEFINE_bool(emit_relocs, options::TWO_DASHES, 'q', false,
+ _("Generate relocations in output"), NULL);
+
+ DEFINE_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false,
+ _("Generate relocatable output"), NULL);
+
+ // -R really means -rpath, but can mean --just-symbols for
+ // compatibility with GNU ld. -rpath is always -rpath, so we list
+ // it separately.
+ DEFINE_special(R, options::EXACTLY_ONE_DASH, 'R',
+ _("Add DIR to runtime search path"), _("DIR"));
+
+ DEFINE_dirlist(rpath, options::ONE_DASH, '\0',
+ _("Add DIR to runtime search path"), _("DIR"));
+
+ DEFINE_special(just_symbols, options::TWO_DASHES, '\0',
+ _("Read only symbol values from FILE"), _("FILE"));
+
+ DEFINE_dirlist(rpath_link, options::TWO_DASHES, '\0',
+ _("Add DIR to link time shared library search path"),
+ _("DIR"));
+
+ DEFINE_bool(strip_all, options::TWO_DASHES, 's', false,
+ _("Strip all symbols"), NULL);
+ DEFINE_bool(strip_debug_gdb, options::TWO_DASHES, '\0', false,
+ _("Strip debug symbols that are unused by gdb "
+ "(at least versions <= 6.7)"), NULL);
+ DEFINE_bool(strip_debug, options::TWO_DASHES, 'S', false,
+ _("Strip debugging information"), NULL);
+
+ DEFINE_bool(shared, options::ONE_DASH, '\0', false,
+ _("Generate shared library"), NULL);
+
+ // This is not actually special in any way, but I need to give it
+ // a non-standard accessor-function name because 'static' is a keyword.
+ DEFINE_special(static, options::ONE_DASH, '\0',
+ _("Do not link against shared libraries"), NULL);
+
+ DEFINE_bool(stats, options::TWO_DASHES, '\0', false,
+ _("Print resource usage statistics"), NULL);
+
+ DEFINE_string(sysroot, options::TWO_DASHES, '\0', "",
+ _("Set target system root directory"), _("DIR"));
+
+ DEFINE_uint64(Tbss, options::ONE_DASH, '\0', -1U,
+ _("Set the address of the bss segment"), _("ADDRESS"));
+ DEFINE_uint64(Tdata, options::ONE_DASH, '\0', -1U,
+ _("Set the address of the data segment"), _("ADDRESS"));
+ DEFINE_uint64(Ttext, options::ONE_DASH, '\0', -1U,
+ _("Set the address of the text segment"), _("ADDRESS"));
+
+ DEFINE_special(script, options::TWO_DASHES, 'T',
+ _("Read linker script"), _("FILE"));
+ DEFINE_special(version_script, options::TWO_DASHES, '\0',
+ _("Read version script"), _("FILE"));
+
+ DEFINE_bool(threads, options::TWO_DASHES, '\0', false,
+ _("Run the linker multi-threaded"),
+ _("Do not run the linker multi-threaded"));
+ DEFINE_uint(thread_count, options::TWO_DASHES, '\0', 0,
+ _("Number of threads to use"), _("COUNT"));
+ DEFINE_uint(thread_count_initial, options::TWO_DASHES, '\0', 0,
+ _("Number of threads to use in initial pass"), _("COUNT"));
+ DEFINE_uint(thread_count_middle, options::TWO_DASHES, '\0', 0,
+ _("Number of threads to use in middle pass"), _("COUNT"));
+ DEFINE_uint(thread_count_final, options::TWO_DASHES, '\0', 0,
+ _("Number of threads to use in final pass"), _("COUNT"));
+
+ DEFINE_bool(whole_archive, options::TWO_DASHES, '\0', false,
+ _("Include all archive contents"),
+ _("Include only needed archive contents"));
+
+ DEFINE_special(start_group, options::TWO_DASHES, '(',
+ _("Start a library search group"), NULL);
+ DEFINE_special(end_group, options::TWO_DASHES, ')',
+ _("End a library search group"), NULL);
+
+ DEFINE_string(debug, options::TWO_DASHES, '\0', "",
+ _("Turn on debugging"), _("[task,script,all][,...]"));
+
+ // The -z flags.
+
+ // Both execstack and noexecstack differ from the default execstack_
+ // value, so we need to use different variables for them.
+ DEFINE_bool(execstack, options::DASH_Z, '\0', false,
+ _("Mark output as requiring executable stack"), NULL);
+ DEFINE_bool(noexecstack, options::DASH_Z, '\0', false,
+ _("Mark output as not requiring executable stack"), NULL);
+ DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0,
+ _("Set maximum page size to SIZE"), _("SIZE"));
+ DEFINE_uint64(common_page_size, options::DASH_Z, '\0', 0,
+ _("Set common page size to SIZE"), _("SIZE"));
- // -O: optimization level (0: don't try to optimize output size).
- int
- optimize() const
- { return this->optimization_level_; }
+ public:
+ typedef options::Dir_list Dir_list;
- // -o: Output file name.
- const char*
- output_file_name() const
- { return this->output_file_name_; }
+ General_options();
- // --oformat: Output format.
- Object_format
- oformat_enum() const
- { return this->oformat_; }
+ // Does post-processing on flags, making sure they all have
+ // non-conflicting values. Also converts some flags from their
+ // "standard" types (string, etc), to another type (enum, DirList),
+ // which can be accessed via a separate method. Dies if it notices
+ // any problems.
+ void finalize();
+ // The macro defines output() (based on --output), but that's a
+ // generic name. Provide this alternative name, which is clearer.
const char*
- oformat() const
- { return this->oformat_string_; }
-
- // Return the default target.
- Target*
- default_target() const;
-
- // -q: Whether to emit relocations.
- bool
- emit_relocs() const
- { return this->emit_relocs_; }
-
- // -r: Whether we are doing a relocatable link.
- bool
- relocatable() const
- { return this->is_relocatable_; }
-
- // -s: Strip all symbols.
- bool
- strip_all() const
- { return this->strip_ == STRIP_ALL; }
-
- // -S: Strip debugging information.
- bool
- strip_debug() const
- { return this->strip_ == STRIP_ALL || this->strip_ == STRIP_DEBUG; }
-
- // --strip-debug-gdb: strip only debugging information that's not
- // used by gdb (at least, for gdb versions <= 6.7).
- bool
- strip_debug_gdb() const
- { return this->strip_debug() || this->strip_ == STRIP_DEBUG_UNUSED_BY_GDB; }
-
- // --allow-shlib-undefined: do not warn about unresolved symbols in
- // --shared libraries.
- bool
- allow_shlib_undefined() const
- { return this->allow_shlib_undefined_; }
-
- // -Bsymbolic: bind defined symbols locally.
- bool
- Bsymbolic() const
- { return this->symbolic_; }
-
- // --compress-debug-sections: compress .debug_* sections in the
- // output file using the given compression method. This is useful
- // when the tools (such as gdb) support compressed sections.
- bool
- compress_debug_sections() const
- { return this->compress_debug_sections_ != NO_COMPRESSION; }
-
- bool
- zlib_compress_debug_sections() const
- { return this->compress_debug_sections_ == ZLIB_COMPRESSION; }
-
- // --demangle: demangle C++ symbols in our log messages.
- bool
- demangle() const
- { return this->demangle_; }
-
- // --detect-odr-violations: Whether to search for One Defn Rule violations.
- bool
- detect_odr_violations() const
- { return this->detect_odr_violations_; }
-
- // --eh-frame-hdr: Whether to generate an exception frame header.
- bool
- eh_frame_hdr() const
- { return this->create_eh_frame_hdr_; }
-
- // --rpath: The runtime search path.
- const Dir_list&
- rpath() const
- { return this->rpath_; }
-
- // --rpath-link: The link time search patch for shared libraries.
- const Dir_list&
- rpath_link() const
- { return this->rpath_link_; }
-
- // --shared: Whether generating a shared object.
- bool
- shared() const
- { return this->is_shared_; }
+ output_file_name() const
+ { return this->output(); }
// This is not defined via a flag, but combines flags to say whether
// the output is position-independent or not.
output_is_position_independent() const
{ return this->shared(); }
- // --static: Whether doing a static link.
+ // This would normally be static(), and defined automatically, but
+ // since static is a keyword, we need to come up with our own name.
bool
is_static() const
- { return this->is_static_; }
-
- // --stats: Print resource usage statistics.
- bool
- stats() const
- { return this->print_stats_; }
-
- // --sysroot: The system root of a cross-linker.
- const std::string&
- sysroot() const
- { return this->sysroot_; }
-
- // -Tbss: The address of the BSS segment
- uint64_t
- Tbss() const
- { return this->bss_segment_address_; }
+ { return static_; }
- // Whether -Tbss was used.
- bool
- user_set_Tbss() const
- { return this->bss_segment_address_ != -1U; }
-
- // -Tdata: The address of the data segment
- uint64_t
- Tdata() const
- { return this->data_segment_address_; }
-
- // Whether -Tdata was used.
- bool
- user_set_Tdata() const
- { return this->data_segment_address_ != -1U; }
-
- // -Ttext: The address of the .text section
- uint64_t
- Ttext() const
- { return this->text_segment_address_; }
-
- // Whether -Ttext was used.
- bool
- user_set_Ttext() const
- { return this->text_segment_address_ != -1U; }
-
- // --threads: Whether to use threads.
- bool
- threads() const
- { return this->threads_; }
-
- // --thread-count-initial: Threads to use in initial pass.
- int
- thread_count_initial() const
- { return this->thread_count_initial_; }
-
- // --thread-count-middle: Threads to use in middle pass.
- int
- thread_count_middle() const
- { return this->thread_count_middle_; }
+ // In addition to getting the input and output formats as a string
+ // (via format() and oformat()), we also give access as an enum.
+ enum Object_format
+ {
+ // Ordinary ELF.
+ OBJECT_FORMAT_ELF,
+ // Straight binary format.
+ OBJECT_FORMAT_BINARY
+ };
- // --thread-count-final: Threads to use in final pass.
- int
- thread_count_final() const
- { return this->thread_count_final_; }
+ // Note: these functions are not very fast.
+ Object_format format_enum() const;
+ Object_format oformat_enum() const;
- // -z execstack, -z noexecstack
+ // These are the best way to get access to the execstack state,
+ // not execstack() and noexecstack() which are hard to use properly.
bool
is_execstack_set() const
- { return this->execstack_ != EXECSTACK_FROM_INPUT; }
+ { return this->execstack_status_ != EXECSTACK_FROM_INPUT; }
bool
is_stack_executable() const
- { return this->execstack_ == EXECSTACK_YES; }
-
- // -z max-page-size
- uint64_t
- max_page_size() const
- { return this->max_page_size_; }
-
- // -z common-page-size
- uint64_t
- common_page_size() const
- { return this->common_page_size_; }
-
- // --debug
- unsigned int
- debug() const
- { return this->debug_; }
+ { return this->execstack_status_ == EXECSTACK_YES; }
private:
// Don't copy this structure.
General_options(const General_options&);
General_options& operator=(const General_options&);
- friend class Command_line;
- friend class options::Command_line_options;
-
- // Which symbols to strip.
- enum Strip
- {
- // Don't strip any symbols.
- STRIP_NONE,
- // Strip all symbols.
- STRIP_ALL,
- // Strip debugging information.
- STRIP_DEBUG,
- // Strip debugging information that's not used by gdb (at least <= 6.7)
- STRIP_DEBUG_UNUSED_BY_GDB
- };
-
// Whether to mark the stack as executable.
enum Execstack
{
// Not set on command line.
EXECSTACK_FROM_INPUT,
- // Mark the stack as executable.
+ // Mark the stack as executable (-z execstack).
EXECSTACK_YES,
- // Mark the stack as not executable.
+ // Mark the stack as not executable (-z noexecstack).
EXECSTACK_NO
};
- // What compression method to use
- enum CompressionMethod
- {
- NO_COMPRESSION,
- ZLIB_COMPRESSION,
- };
-
- void
- set_define_common(bool value)
- {
- this->define_common_ = value;
- this->user_set_define_common_ = true;
- }
-
- void
- set_no_define_common(bool value)
- { this->set_define_common(!value); }
-
- bool
- user_set_define_common() const
- { return this->user_set_define_common_; }
-
- void
- set_entry(const char* arg)
- { this->entry_ = arg; }
-
- void
- set_export_dynamic(bool value)
- { this->export_dynamic_ = value; }
-
- void
- set_soname(const char* arg)
- { this->soname_ = arg; }
-
- void
- set_dynamic_linker(const char* arg)
- { this->dynamic_linker_ = arg; }
-
- void
- add_to_search_path(const char* arg)
- { this->search_path_.push_back(Search_directory(arg, false)); }
-
- void
- add_to_search_path_with_sysroot(const char* arg)
- { this->search_path_.push_back(Search_directory(arg, true)); }
-
- void
- set_optimize(const char* arg)
- {
- char* endptr;
- this->optimization_level_ = strtol(arg, &endptr, 0);
- if (*endptr != '\0' || this->optimization_level_ < 0)
- gold_fatal(_("invalid optimization level: %s"), arg);
- }
-
- void
- set_output(const char* arg)
- { this->output_file_name_ = arg; }
-
- void
- set_oformat(const char*);
-
- void
- set_emit_relocs(bool value)
- { this->emit_relocs_ = value; }
-
- void
- set_relocatable(bool value)
- { this->is_relocatable_ = value; }
-
- void
- set_strip_all(bool)
- { this->strip_ = STRIP_ALL; }
-
- // Note: normalize_options() depends on the fact that this turns off
- // STRIP_ALL if it were already set.
- void
- set_strip_debug(bool)
- { this->strip_ = STRIP_DEBUG; }
-
- void
- set_strip_debug_gdb(bool)
- { this->strip_ = STRIP_DEBUG_UNUSED_BY_GDB; }
-
- void
- set_allow_shlib_undefined(bool value)
- { this->allow_shlib_undefined_ = value; }
-
- void
- set_no_allow_shlib_undefined(bool value)
- { this->set_allow_shlib_undefined(!value); }
-
- void
- set_Bsymbolic(bool value)
- { this->symbolic_ = value; }
-
- void set_compress_debug_sections(const char* arg)
- {
- if (strcmp(arg, "none") == 0)
- this->compress_debug_sections_ = NO_COMPRESSION;
-#ifdef HAVE_ZLIB_H
- else if (strcmp(arg, "zlib") == 0)
- this->compress_debug_sections_ = ZLIB_COMPRESSION;
-#endif
- else
- gold_fatal(_("unsupported argument to --compress-debug-sections: %s"),
- arg);
- }
-
- void
- add_to_defsym(const char* arg);
-
- void
- set_demangle(bool value)
- { this->demangle_ = value; }
-
- void
- set_no_demangle(bool value)
- { this->set_demangle(!value); }
-
- void
- set_detect_odr_violations(bool value)
- { this->detect_odr_violations_ = value; }
-
- void
- set_eh_frame_hdr(bool value)
- { this->create_eh_frame_hdr_ = value; }
-
- void
- add_to_rpath(const char* arg)
- { this->rpath_.push_back(Search_directory(arg, false)); }
-
- void
- add_to_rpath_link(const char* arg)
- { this->rpath_link_.push_back(Search_directory(arg, false)); }
-
+ Execstack execstack_status_;
void
- set_shared(bool value)
- { this->is_shared_ = value; }
+ set_execstack_status(Execstack value)
+ { execstack_status_ = value; }
+ bool static_;
void
set_static(bool value)
- { this->is_static_ = value; }
-
- void
- set_stats(bool value)
- { this->print_stats_ = value; }
-
- void
- set_sysroot(const char* arg)
- { this->sysroot_ = arg; }
-
- void
- set_segment_address(const char* name, const char* arg, uint64_t* val)
- {
- char* endptr;
- *val = strtoull(arg, &endptr, 0);
- if (*endptr != '\0' || *val == -1U)
- gold_fatal(_("invalid argument to %s: %s"), name, arg);
- }
-
- void
- set_Tbss(const char* arg)
- { this->set_segment_address("-Tbss", arg, &this->bss_segment_address_); }
-
- void
- set_Tdata(const char* arg)
- { this->set_segment_address("-Tdata", arg, &this->data_segment_address_); }
-
- void
- set_Ttext(const char* arg)
- { this->set_segment_address("-Ttext", arg, &this->text_segment_address_); }
-
- int
- parse_thread_count(const char* arg)
- {
- char* endptr;
- const int count = strtol(arg, &endptr, 0);
- if (*endptr != '\0' || count < 0)
- gold_fatal(_("invalid thread count: %s"), arg);
- return count;
- }
-
- void
- set_threads(bool value)
- {
-#ifndef ENABLE_THREADS
- if (value)
- gold_fatal(_("--threads not supported"));
-#endif
- this->threads_ = value;
- }
-
- void
- set_no_threads(bool value)
- { this->set_threads(!value); }
-
- void
- set_thread_count(const char* arg)
- {
- int count = this->parse_thread_count(arg);
- this->thread_count_initial_ = count;
- this->thread_count_middle_ = count;
- this->thread_count_final_ = count;
- }
-
- void
- set_thread_count_initial(const char* arg)
- { this->thread_count_initial_ = this->parse_thread_count(arg); }
-
- void
- set_thread_count_middle(const char* arg)
- { this->thread_count_middle_ = this->parse_thread_count(arg); }
-
- void
- set_thread_count_final(const char* arg)
- { this->thread_count_final_ = this->parse_thread_count(arg); }
-
- void
- ignore(const char*)
- { }
+ { static_ = value; }
+ // These are called by finalize() to set up the search-path correctly.
void
- set_execstack(bool)
- { this->execstack_ = EXECSTACK_YES; }
-
- void
- set_noexecstack(bool)
- { this->execstack_ = EXECSTACK_NO; }
-
- void
- set_max_page_size(const char* arg)
- {
- char* endptr;
- this->max_page_size_ = strtoull(arg, &endptr, 0);
- if (*endptr != '\0' || this->max_page_size_ == 0)
- gold_fatal(_("invalid max-page-size: %s"), arg);
- }
-
- void
- set_common_page_size(const char* arg)
- {
- char* endptr;
- this->common_page_size_ = strtoull(arg, &endptr, 0);
- if (*endptr != '\0' || this->common_page_size_ == 0)
- gold_fatal(_("invalid common-page-size: %s"), arg);
- }
-
- void
- set_debug(unsigned int flags)
- { this->debug_ = flags; }
-
- // Handle the -z option.
- void
- handle_z_option(const char*);
-
- // Handle the --debug option.
- void
- handle_debug_option(const char*);
+ add_to_library_path_with_sysroot(const char* arg)
+ { this->add_search_directory_to_library_path(Search_directory(arg, true)); }
// Apply any sysroot to the directory lists.
void
add_sysroot();
-
- bool define_common_;
- bool user_set_define_common_;
- const char* entry_;
- bool export_dynamic_;
- const char* soname_;
- const char* dynamic_linker_;
- Dir_list search_path_;
- int optimization_level_;
- const char* output_file_name_;
- Object_format oformat_;
- const char* oformat_string_;
- bool emit_relocs_;
- bool is_relocatable_;
- Strip strip_;
- bool allow_shlib_undefined_;
- bool symbolic_;
- CompressionMethod compress_debug_sections_;
- bool demangle_;
- bool detect_odr_violations_;
- bool create_eh_frame_hdr_;
- Dir_list rpath_;
- Dir_list rpath_link_;
- bool is_shared_;
- bool is_static_;
- bool print_stats_;
- std::string sysroot_;
- uint64_t bss_segment_address_;
- uint64_t data_segment_address_;
- uint64_t text_segment_address_;
- bool threads_;
- int thread_count_initial_;
- int thread_count_middle_;
- int thread_count_final_;
- Execstack execstack_;
- uint64_t max_page_size_;
- uint64_t common_page_size_;
- unsigned int debug_;
};
-// The current state of the position dependent options.
+// The position-dependent options. We use this to store the state of
+// the commandline at a particular point in parsing for later
+// reference. For instance, if we see "ld --whole-archive foo.a
+// --no-whole-archive," we want to store the whole-archive option with
+// foo.a, so when the time comes to parse foo.a we know we should do
+// it in whole-archive mode. We could store all of General_options,
+// but that's big, so we just pick the subset of flags that actually
+// change in a position-dependent way.
+
+#define DEFINE_posdep(varname__, type__) \
+ public: \
+ type__ \
+ varname__() const \
+ { return this->varname__##_; } \
+ \
+ void \
+ set_##varname__(type__ value) \
+ { this->varname__##_ = value; } \
+ private: \
+ type__ varname__##_
class Position_dependent_options
{
public:
- typedef General_options::Object_format Object_format;
-
- Position_dependent_options();
-
- // -Bdynamic/-Bstatic: Whether we are searching for a static archive
- // -rather than a shared object.
- bool
- Bdynamic() const
- { return !this->do_static_search_; }
-
- // --as-needed: Whether to add a DT_NEEDED argument only if the
- // dynamic object is used.
- bool
- as_needed() const
- { return this->as_needed_; }
-
- // --whole-archive: Whether to include the entire contents of an
- // --archive.
- bool
- whole_archive() const
- { return this->include_whole_archive_; }
-
- // --format: The format of the input file.
- Object_format
- format_enum() const
- { return this->input_format_; }
-
- void
- set_Bstatic(bool value)
- { this->do_static_search_ = value; }
-
- void
- set_Bdynamic(bool value)
- { this->set_Bstatic(!value); }
+ Position_dependent_options(const General_options& options
+ = Position_dependent_options::default_options_)
+ { copy_from_options(options); }
- void
- set_as_needed(bool value)
- { this->as_needed_ = value; }
-
- void
- set_no_as_needed(bool value)
- { this->set_as_needed(!value); }
-
- void
- set_whole_archive(bool value)
- { this->include_whole_archive_ = value; }
-
- void
- set_no_whole_archive(bool value)
- { this->set_whole_archive(!value); }
-
- void
- set_format(const char*);
+ void copy_from_options(const General_options& options)
+ {
+ this->set_as_needed(options.as_needed());
+ this->set_Bdynamic(options.Bdynamic());
+ this->set_format_enum(options.format_enum());
+ this->set_whole_archive(options.whole_archive());
+ }
- void
- set_format_enum(Object_format value)
- { this->input_format_ = value; }
+ DEFINE_posdep(as_needed, bool);
+ DEFINE_posdep(Bdynamic, bool);
+ DEFINE_posdep(format_enum, General_options::Object_format);
+ DEFINE_posdep(whole_archive, bool);
private:
- bool do_static_search_;
- bool as_needed_;
- bool include_whole_archive_;
- Object_format input_format_;
+ // This is a General_options with everything set to its default
+ // value. A Position_dependent_options created with no argument
+ // will take its values from here.
+ static General_options default_options_;
};
+
// A single file or library argument from the command line.
class Input_file_argument
Input_file_argument(const char* name, bool is_lib,
const char* extra_search_path,
- bool just_symbols,
- const Position_dependent_options& options)
+ bool just_symbols,
+ const Position_dependent_options& options)
+ : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path),
+ just_symbols_(just_symbols), options_(options)
+ { }
+
+ // You can also pass in a General_options instance instead of a
+ // Position_dependent_options. In that case, we extract the
+ // position-independent vars from the General_options and only store
+ // those.
+ Input_file_argument(const char* name, bool is_lib,
+ const char* extra_search_path,
+ bool just_symbols,
+ const General_options& options)
: name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path),
just_symbols_(just_symbols), options_(options)
{ }
{
return (this->extra_search_path_.empty()
? NULL
- : this->extra_search_path_.c_str());
+ : this->extra_search_path_.c_str());
}
// Return whether we should only read symbols from this file.
bool in_group_;
};
-// All the information read from the command line.
+
+// All the information read from the command line. These are held in
+// three separate structs: one to hold the options (--foo), one to
+// hold the filenames listed on the commandline, and one to hold
+// linker script information. This third is not a subset of the other
+// two because linker scripts can be specified either as options (via
+// -T) or as a file.
class Command_line
{
// Process the command line options. This will exit with an
// appropriate error message if an unrecognized option is seen.
void
- process(int argc, char** argv);
+ process(int argc, const char** argv);
// Process one command-line option. This takes the index of argv to
- // process, and returns the index for the next option.
- int
- process_one_option(int argc, char** argv, int i, bool* no_more_options);
-
- // Handle a -l option.
+ // process, and returns the index for the next option. no_more_options
+ // is set to true if argv[i] is "--".
int
- process_l_option(int, char**, char*, bool);
-
- // Handle a -R option when it means --rpath.
- void
- add_to_rpath(const char* arg)
- { this->options_.add_to_rpath(arg); }
-
- // Add a file for which we just read the symbols.
- void
- add_just_symbols_file(const char* arg)
- {
- this->inputs_.add_file(Input_file_argument(arg, false, "", true,
- this->position_options_));
- }
-
- // Handle a --start-group option.
- void
- start_group(const char* arg);
-
- // Handle a --end-group option.
- void
- end_group(const char* arg);
-
- // Get an option argument--a helper function for special processing.
- const char*
- get_special_argument(const char* longname, int argc, char** argv,
- const char* arg, bool long_option,
- int *pret);
+ process_one_option(int argc, const char** argv, int i,
+ bool* no_more_options);
// Get the general options.
const General_options&
version_script() const
{ return *this->script_options_.version_script_info(); }
+ // Get the input files.
+ Input_arguments&
+ inputs()
+ { return this->inputs_; }
+
// The number of input files.
int
number_of_input_files() const
Command_line(const Command_line&);
Command_line& operator=(const Command_line&);
- // Report usage error.
- void
- usage() ATTRIBUTE_NORETURN;
- void
- usage(const char* msg, const char* opt) ATTRIBUTE_NORETURN;
- void
- usage(const char* msg, char opt) ATTRIBUTE_NORETURN;
-
- // Apply a command line option.
- void
- apply_option(const gold::options::One_option&, const char*);
-
- // Add a file.
- void
- add_file(const char* name, bool is_lib);
-
- // Examine the result of processing the command-line, and verify
- // the flags do not contradict each other or are otherwise illegal.
- void
- normalize_options();
-
General_options options_;
Position_dependent_options position_options_;
Script_options script_options_;
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