// options.c -- handle command line options for gold
-#include <iostream>
+// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
#include "gold.h"
+
+#include <cstdlib>
+#include <iostream>
+#include <sys/stat.h>
+#include "filenames.h"
+#include "libiberty.h"
+
+#include "debug.h"
+#include "script.h"
+#include "target-select.h"
#include "options.h"
namespace gold
// 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, Command_line*);
+ 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.
- void (General_options::*general_noarg)();
+ // 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.
- void (Position_dependent_options::*dependent_noarg)();
+ // 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.
{ return this->general_arg != NULL || this->dependent_arg != NULL; }
};
+// We have a separate table for -z options.
+
+struct options::One_z_option
+{
+ // The name of the option.
+ const char* name;
+
+ // The member function in General_options called to record an option
+ // which does not take an argument.
+ void (General_options::*set_noarg)(bool);
+
+ // The member function in General_options called to record an option
+ // which does take an argument.
+ void (General_options::*set_arg)(const char*);
+};
+
+// We have a separate table for --debug options.
+
+struct options::One_debug_option
+{
+ // The name of the option.
+ const char* name;
+
+ // The flags to turn on.
+ unsigned int debug_flags;
+};
+
class options::Command_line_options
{
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;
};
} // End namespace gold.
namespace
{
+// 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.
+
+gold::General_options::Object_format
+string_to_object_format(const char* arg)
+{
+ 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;
+ }
+}
+
+// Handle the special -defsym option, which defines a symbol.
+
+int
+add_to_defsym(int argc, char** argv, char* arg, bool long_option,
+ gold::Command_line* cmdline)
+{
+ int ret;
+ const char* val = cmdline->get_special_argument("defsym", argc, argv, arg,
+ long_option, &ret);
+ cmdline->script_options().define_symbol(val);
+ return ret;
+}
+
// Handle the special -l option, which adds an input file.
int
-library(int argc, char** argv, char* arg, gold::Command_line* cmdline)
+library(int argc, char** argv, char* arg, bool long_option,
+ gold::Command_line* cmdline)
+{
+ return cmdline->process_l_option(argc, argv, arg, long_option);
+}
+
+// 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.
+
+int
+handle_r_option(int argc, char** argv, char* arg, bool long_option,
+ gold::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);
+ else
+ cmdline->add_just_symbols_file(val);
+ return ret;
+}
+
+// Handle the --just-symbols option.
+
+int
+handle_just_symbols_option(int argc, char** argv, char* arg,
+ bool long_option, gold::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;
+}
+
+// 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)
{
- return cmdline->process_l_option(argc, argv, arg);
+ 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;
+}
+
+// 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)
+{
+ 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;
}
// Handle the special --start-group option.
int
-start_group(int, char**, char* arg, gold::Command_line* cmdline)
+start_group(int, char**, char* arg, bool, gold::Command_line* cmdline)
{
cmdline->start_group(arg);
return 1;
// Handle the special --end-group option.
int
-end_group(int, char**, char* arg, gold::Command_line* cmdline)
+end_group(int, char**, char* arg, bool, gold::Command_line* cmdline)
{
cmdline->end_group(arg);
return 1;
// Report usage information for ld --help, and exit.
int
-help(int, char**, char*, gold::Command_line*)
+help(int, char**, char*, bool, gold::Command_line*)
{
printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name);
len += 2;
}
printf(options[j].help_output);
- len += std::strlen(options[i].help_output);
+ len += std::strlen(options[j].help_output);
+ comma = true;
}
else
{
}
printf("-%c", options[j].short_option);
len += 2;
+ comma = true;
}
if (options[j].long_option != NULL)
}
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)
+ if (len >= 30)
{
printf("\n");
len = 0;
std::puts(options[i].doc);
}
- gold::gold_exit(true);
+ ::exit(EXIT_SUCCESS);
return 0;
}
+// Report version information.
+
+int
+version(int, char**, char* opt, bool, gold::Command_line*)
+{
+ gold::print_version(opt[0] == 'v' && opt[1] == '\0');
+ ::exit(EXIT_SUCCESS);
+ return 0;
+}
+
+// If the default sysroot is relocatable, try relocating it based on
+// the prefix FROM.
+
+char*
+get_relative_sysroot(const char* from)
+{
+ char* path = make_relative_prefix(gold::program_name, from,
+ TARGET_SYSTEM_ROOT);
+ if (path != NULL)
+ {
+ struct stat s;
+ if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode))
+ return path;
+ free(path);
+ }
+
+ return NULL;
+}
+
+// Return the default sysroot. This is set by the --with-sysroot
+// option to configure.
+
+std::string
+get_default_sysroot()
+{
+ const char* sysroot = TARGET_SYSTEM_ROOT;
+ if (*sysroot == '\0')
+ return "";
+
+ if (TARGET_SYSTEM_ROOT_RELOCATABLE)
+ {
+ char* path = get_relative_sysroot (BINDIR);
+ if (path == NULL)
+ path = get_relative_sysroot (TOOLBINDIR);
+ if (path != NULL)
+ {
+ std::string ret = path;
+ free(path);
+ return ret;
+ }
+ }
+
+ return sysroot;
+}
+
} // End anonymous namespace.
namespace gold
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),
+ 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,
+ N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES,
&library),
- 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),
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_file_name),
- GENERAL_NOARG('r', NULL, N_("Generate relocatable output"), NULL,
+ &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('r', "relocatable", N_("Generate relocatable output"), NULL,
ONE_DASH, &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)
+ 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 int options::Command_line_options::z_options_size =
+ sizeof(z_options) / sizeof(z_options[0]);
+
+// The --debug options.
+
+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.
General_options::General_options()
- : search_path_(),
+ : 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),
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)
+ 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;
+}
+
+// Handle the --oformat option.
+
+void
+General_options::set_oformat(const char* arg)
+{
+ this->oformat_string_ = arg;
+ this->oformat_ = string_to_object_format(arg);
+}
+
+// The x86_64 kernel build converts a binary file to an object file
+// using -r --format binary --oformat elf32-i386 foo.o. In order to
+// support that for gold we support determining the default target
+// choice from the output format. We recognize names that the GNU
+// linker uses.
+
+Target*
+General_options::default_target() const
+{
+ if (this->oformat_string_ != NULL)
+ {
+ Target* target = select_target_by_name(this->oformat_string_);
+ if (target != NULL)
+ return target;
+
+ gold_error(_("unrecognized output format %s"),
+ this->oformat_string_);
+ }
+
+ // The GOLD_DEFAULT_xx macros are defined by the configure script.
+ Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE,
+ GOLD_DEFAULT_SIZE,
+ GOLD_DEFAULT_BIG_ENDIAN,
+ 0, 0);
+ gold_assert(target != NULL);
+ return target;
+}
+
+// Handle the -z option.
+
+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)
+ {
+ arglen = argarg - arg;
+ argarg++;
+ }
+ else
+ arglen = strlen(arg);
+
+ 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 (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;
+ }
+ }
+
+ gold::gold_fatal(_("%s: unrecognized -z subcommand: %s\n"),
+ program_name, arg);
+}
+
+// Handle the --debug option.
+
+void
+General_options::handle_debug_option(const char* arg)
+{
+ 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);
+}
+
+// Add the sysroot, if any, to the search paths.
+
+void
+General_options::add_sysroot()
{
+ if (this->sysroot_.empty())
+ {
+ this->sysroot_ = get_default_sysroot();
+ if (this->sysroot_.empty())
+ return;
+ }
+
+ const char* sysroot = this->sysroot_.c_str();
+ char* canonical_sysroot = lrealpath(sysroot);
+
+ for (Dir_list::iterator p = this->search_path_.begin();
+ p != this->search_path_.end();
+ ++p)
+ p->add_sysroot(sysroot, canonical_sysroot);
+
+ free(canonical_sysroot);
}
// The default values for the position dependent options.
Position_dependent_options::Position_dependent_options()
- : do_static_search_(false)
+ : do_static_search_(false),
+ as_needed_(false),
+ include_whole_archive_(false),
+ input_format_(General_options::OBJECT_FORMAT_ELF)
+{
+}
+
+// Set the input format.
+
+void
+Position_dependent_options::set_format(const char* arg)
+{
+ this->input_format_ = string_to_object_format(arg);
+}
+
+// Search_directory methods.
+
+// This is called if we have a sysroot. Apply the sysroot if
+// appropriate. Record whether the directory is in the sysroot.
+
+void
+Search_directory::add_sysroot(const char* 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_;
+ this->name_ = sysroot + this->name_;
+ this->is_in_sysroot_ = true;
+ }
+ else
+ {
+ // Check whether this entry is in the sysroot. To do this
+ // correctly, we need to use canonical names. Otherwise we will
+ // get confused by the ../../.. paths that gcc tends to use.
+ char* canonical_name = lrealpath(this->name_.c_str());
+ 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;
+ }
+ free(canonical_name);
+ }
+}
+
+// Input_arguments methods.
+
+// Add a file to the list.
+
+void
+Input_arguments::add_file(const Input_file_argument& file)
+{
+ if (!this->in_group_)
+ this->input_argument_list_.push_back(Input_argument(file));
+ else
+ {
+ gold_assert(!this->input_argument_list_.empty());
+ gold_assert(this->input_argument_list_.back().is_group());
+ this->input_argument_list_.back().group()->add_file(file);
+ }
+}
+
+// Start a group.
+
+void
+Input_arguments::start_group()
+{
+ gold_assert(!this->in_group_);
+ Input_file_group* group = new Input_file_group();
+ this->input_argument_list_.push_back(Input_argument(group));
+ this->in_group_ = true;
+}
+
+// End a group.
+
+void
+Input_arguments::end_group()
{
+ gold_assert(this->in_group_);
+ this->in_group_ = false;
}
// Command_line options.
Command_line::Command_line()
- : options_(), position_options_(), inputs_(), in_group_(false)
+ : options_(), position_options_(), script_options_(), inputs_()
{
}
-// Process the command line options.
+// 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.
+
+int
+Command_line::process_one_option(int argc, 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);
+
+ if (argv[i][0] != '-' || *no_more_options)
+ {
+ this->add_file(argv[i], false);
+ 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;
+ }
+ }
+
+ // 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)
+ {
+ arg = argv[i + 1];
+ skiparg = 1;
+ }
+
+ int j;
+ for (j = 0; j < options_size; ++j)
+ {
+ 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;
+ }
+ }
+ 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 (j >= options_size)
+ this->usage(_("unknown option"), *s);
+
+ ++s;
+ }
+ return i;
+}
+
void
Command_line::process(int argc, char** argv)
{
- const int options_size = options::Command_line_options::options_size;
- const options::One_option* options =
- options::Command_line_options::options;
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)
{
- if (argv[i][0] != '-' || no_more_options)
+ size_t longlen = strlen(longname);
+ gold_assert(strncmp(arg, longname, longlen) == 0);
+ arg += longlen;
+ if (*arg == '=')
{
- this->add_file(argv[i], false);
- ++i;
- continue;
+ *pret = 1;
+ return arg + 1;
}
-
- // Option starting with '-'.
- int dashes = 1;
- if (argv[i][1] == '-')
+ else if (argc > 1)
{
- dashes = 2;
- if (argv[i][2] == '\0')
- {
- no_more_options = true;
- continue;
- }
+ gold_assert(*arg == '\0');
+ *pret = 2;
+ return argv[1];
}
-
- // Look for a long option match.
- char* opt = argv[i] + dashes;
- char first = opt[0];
- int skiparg = 0;
- char* arg = strchr(opt, '=');
- if (arg != NULL)
- *arg = '\0';
- else if (i + 1 < argc)
+ }
+ else
+ {
+ if (arg[1] != '\0')
{
- arg = argv[i + 1];
- skiparg = 1;
+ *pret = 1;
+ return arg + 1;
}
-
- int j;
- for (j = 0; j < options_size; ++j)
+ else if (argc > 1)
{
- 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)
- i += options[j].special(argc - 1, argv + i, opt, this);
- else
- {
- if (!options[j].takes_argument())
- {
- arg = NULL;
- skiparg = 0;
- }
- else
- {
- if (arg == NULL)
- this->usage(_("missing argument"), argv[i]);
- }
- this->apply_option(options[j], arg);
- i += skiparg + 1;
- }
- break;
- }
+ *pret = 2;
+ return argv[1];
}
- if (j < options_size)
- continue;
+ }
- // If we saw two dashes, we need to see a long option.
- if (dashes == 2)
- this->usage(_("unknown option"), argv[i]);
+ this->usage(_("missing argument"), arg);
+}
- // 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, 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;
- }
- }
+// Ensure options don't contradict each other and are otherwise kosher.
- if (j >= options_size)
- this->usage(_("unknown option"), *s);
+void
+Command_line::normalize_options()
+{
+ if (this->options_.shared() && this->options_.relocatable())
+ gold_fatal(_("-shared and -r are incompatible"));
- ++s;
- }
- }
+ if (this->options_.oformat() != General_options::OBJECT_FORMAT_ELF
+ && (this->options_.shared() || this->options_.relocatable()))
+ gold_fatal(_("binary output format not compatible with -shared or -r"));
- if (this->in_group_)
+ // 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())
{
- fprintf(stderr, _("%s: missing group end"), program_name);
- this->usage();
+ // Clears the strip_all() status, replacing it with strip_debug().
+ this->options_.set_strip_debug(true);
}
- // FIXME: We should only do this when configured in native mode.
- this->options_.add_to_search_path("/lib");
- this->options_.add_to_search_path("/usr/lib");
+ // FIXME: we can/should be doing a lot more sanity checking here.
}
+
// Apply a command line option.
void
if (arg == NULL)
{
if (opt.general_noarg)
- (this->options_.*(opt.general_noarg))();
+ (this->options_.*(opt.general_noarg))(true);
else if (opt.dependent_noarg)
- (this->position_options_.*(opt.dependent_noarg))();
+ (this->position_options_.*(opt.dependent_noarg))(true);
else
gold_unreachable();
}
void
Command_line::add_file(const char* name, bool is_lib)
{
- Input_file_argument file(name, is_lib, this->position_options_);
- if (!this->in_group_)
- this->inputs_.push_back(Input_argument(file));
- else
- {
- assert(!this->inputs_.empty());
- assert(this->inputs_.back().is_group());
- this->inputs_.back().group()->add_file(file);
- }
+ 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)
+Command_line::process_l_option(int argc, char** argv, char* arg,
+ bool long_option)
{
int ret;
- const char* libname;
- if (arg[1] != '\0')
- {
- ret = 1;
- libname = arg + 1;
- }
- else if (argc > 1)
- {
- ret = 2;
- libname = argv[argc + 1];
- }
- else
- this->usage(_("missing argument"), arg);
-
+ const char* libname = this->get_special_argument("library", argc, argv, arg,
+ long_option, &ret);
this->add_file(libname, true);
-
return ret;
}
void
Command_line::start_group(const char* arg)
{
- if (this->in_group_)
+ if (this->inputs_.in_group())
this->usage(_("may not nest groups"), arg);
-
- // This object is leaked.
- Input_file_group* group = new Input_file_group();
- this->inputs_.push_back(Input_argument(group));
-
- this->in_group_ = true;
+ this->inputs_.start_group();
}
// Handle the --end-group option.
void
Command_line::end_group(const char* arg)
{
- if (!this->in_group_)
+ if (!this->inputs_.in_group())
this->usage(_("group end without group start"), arg);
- this->in_group_ = false;
+ this->inputs_.end_group();
}
// Report a usage error. */
fprintf(stderr,
_("%s: use the --help option for usage information\n"),
program_name);
- gold_exit(false);
+ ::exit(EXIT_FAILURE);
}
void
projects / deliverable / binutils-gdb.git / blobdiff