// options.c -- handle command line options for gold
-#include <iostream>
+// Copyright 2006, 2007 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 <iostream>
+#include <sys/stat.h>
+#include "filenames.h"
+#include "libiberty.h"
+
#include "options.h"
namespace gold
std::puts(options[i].doc);
}
- gold::gold_exit(true);
+ ::exit(0);
+
+ return 0;
+}
+
+// Report version information.
+int
+version(int, char**, char* opt, gold::Command_line*)
+{
+ gold::print_version(opt[0] == 'v' && opt[1] == '\0');
+ ::exit(0);
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[] =
{
- SPECIAL('l', "library", N_("Search for library LIBNAME"),
- 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),
+ 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::clear_as_needed),
+ POSDEP_NOARG('\0', "Bdynamic",
+ N_("-l searches for shared libraries"),
+ NULL, ONE_DASH,
+ &Position_dependent_options::set_dynamic_search),
+ POSDEP_NOARG('\0', "Bstatic",
+ N_("-l does not search for shared libraries"),
+ NULL, ONE_DASH,
+ &Position_dependent_options::set_static_search),
+ GENERAL_NOARG('\0', "Bsymbolic", N_("Bind defined symbols locally"),
+ NULL, ONE_DASH, &General_options::set_symbolic),
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_create_eh_frame_hdr),
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', NULL, N_("Optimize output file size"),
- N_("-O level"), ONE_DASH,
- &General_options::set_optimization_level),
GENERAL_ARG('o', "output", N_("Set output file name"),
N_("-o FILE, --output FILE"), TWO_DASHES,
&General_options::set_output_file_name),
+ GENERAL_ARG('O', NULL, N_("Optimize output file size"),
+ N_("-O level"), ONE_DASH,
+ &General_options::set_optimization_level),
GENERAL_NOARG('r', NULL, N_("Generate relocatable output"), NULL,
ONE_DASH, &General_options::set_relocatable),
GENERAL_ARG('R', "rpath", N_("Add DIR to runtime search path"),
N_("-R DIR, -rpath DIR"), ONE_DASH,
&General_options::add_to_rpath),
- GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"),
- NULL, TWO_DASHES, &General_options::set_create_eh_frame_hdr),
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('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),
- 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::clear_as_needed),
+ 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', "Ttext", N_("Set the address of the .text section"),
+ N_("-Ttext ADDRESS"), ONE_DASH,
+ &General_options::set_text_segment_address),
+ 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::clear_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,
N_("Include only needed archive contents"),
NULL, TWO_DASHES,
&Position_dependent_options::clear_whole_archive),
+ 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)
};
const int options::Command_line_options::options_size =
optimization_level_(0),
output_file_name_("a.out"),
is_relocatable_(false),
+ strip_(STRIP_NONE),
+ symbolic_(false),
create_eh_frame_hdr_(false),
rpath_(),
rpath_link_(),
is_shared_(false),
- is_static_(false)
+ is_static_(false),
+ print_stats_(false),
+ sysroot_(),
+ text_segment_address_(-1U), // -1 indicates value not set by user
+ threads_(false),
+ thread_count_initial_(0),
+ thread_count_middle_(0),
+ thread_count_final_(0)
{
}
{
}
+// 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);
+}
+
+// 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.
char first = opt[0];
int skiparg = 0;
char* arg = strchr(opt, '=');
+ bool argument_with_equals = arg != NULL;
if (arg != NULL)
- *arg = '\0';
+ {
+ *arg = '\0';
+ ++arg;
+ }
else if (i + 1 < argc)
{
arg = argv[i + 1];
{
if (!options[j].takes_argument())
{
+ if (argument_with_equals)
+ this->usage(_("unexpected argument"), argv[i]);
arg = NULL;
skiparg = 0;
}
}
// 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");
+ 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();
+}
+
+// Ensure options don't contradict each other and are otherwise kosher.
+
+void
+Command_line::normalize_options()
+{
+ // 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_.is_relocatable())
+ {
+ // Clears the strip_all() status, replacing it with strip_debug().
+ this->options_.set_strip_debug();
+ }
+
+ // FIXME: we can/should be doing a lot more sanity checking here.
}
+
// Apply a command line option.
void
void
Command_line::add_file(const char* name, bool is_lib)
{
- Input_file_argument file(name, is_lib, this->position_options_);
+ Input_file_argument file(name, is_lib, "", this->position_options_);
this->inputs_.add_file(file);
}
fprintf(stderr,
_("%s: use the --help option for usage information\n"),
program_name);
- gold_exit(false);
+ ::exit(1);
}
void
projects / deliverable / binutils-gdb.git / blobdiff