/* Parse options for the GNU linker. Copyright (C) 1991, 92, 93, 94, 1995 Free Software Foundation, Inc. This file is part of GLD, the Gnu Linker. GLD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GLD 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 GLD; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "bfd.h" #include "sysdep.h" #include #include #include #include "getopt.h" #include "bfdlink.h" #include "ld.h" #include "ldmain.h" #include "ldmisc.h" #include "ldexp.h" #include "ldlang.h" #include "ldgram.h" #include "ldlex.h" #include "ldfile.h" #include "ldver.h" #include "ldemul.h" /* Somewhere above, sys/stat.h got included . . . . */ #if !defined(S_ISDIR) && defined(S_IFDIR) #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) #endif /* Omit args to avoid the possibility of clashing with a system header that might disagree about consts. */ unsigned long strtoul (); static void set_default_dirlist PARAMS ((char *dirlist_ptr)); static void set_section_start PARAMS ((char *sect, char *valstr)); void parse_args (argc, argv) int argc; char **argv; { int i; int ingroup = 0; char *default_dirlist = NULL; /* Starting the short option string with '-' is for programs that expect options and other ARGV-elements in any order and that care about the ordering of the two. We describe each non-option ARGV-element as if it were the argument of an option with character code 1. */ const char *shortopts = "-a:A:B::b:c:de:F::G:gh:iL:l:Mm:NnO:o:R:rSsT:tu:VvXxY:y:z:()"; /* 150 isn't special; it's just an arbitrary non-ASCII char value. */ #define OPTION_ASSERT 150 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1) #define OPTION_DEFSYM (OPTION_CALL_SHARED + 1) #define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1) #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1) #define OPTION_EL (OPTION_EB + 1) #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1) #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1) #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1) #define OPTION_IGNORE (OPTION_HELP + 1) #define OPTION_MAP (OPTION_IGNORE + 1) #define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1) #define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1) #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1) #define OPTION_OFORMAT (OPTION_NON_SHARED + 1) #define OPTION_RELAX (OPTION_OFORMAT + 1) #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1) #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1) #define OPTION_SHARED (OPTION_RPATH + 1) #define OPTION_SONAME (OPTION_SHARED + 1) #define OPTION_SORT_COMMON (OPTION_SONAME + 1) #define OPTION_STATS (OPTION_SORT_COMMON + 1) #define OPTION_SYMBOLIC (OPTION_STATS + 1) #define OPTION_TBSS (OPTION_SYMBOLIC + 1) #define OPTION_TDATA (OPTION_TBSS + 1) #define OPTION_TTEXT (OPTION_TDATA + 1) #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1) #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1) #define OPTION_VERBOSE (OPTION_UR + 1) #define OPTION_VERSION (OPTION_VERBOSE + 1) #define OPTION_WARN_COMMON (OPTION_VERSION + 1) #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1) #define OPTION_WARN_ONCE (OPTION_WARN_CONSTRUCTORS + 1) #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1) #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1) #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1) static struct option longopts[] = { /* Sorted alphabeticaly, except for the PE options grouped at the end. */ {"assert", required_argument, NULL, OPTION_ASSERT}, {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, {"dc", no_argument, NULL, 'd'}, {"defsym", required_argument, NULL, OPTION_DEFSYM}, {"dll-verbose", no_argument, NULL, OPTION_VERSION}, /* Linux. */ {"dn", no_argument, NULL, OPTION_NON_SHARED}, {"dp", no_argument, NULL, 'd'}, {"dy", no_argument, NULL, OPTION_CALL_SHARED}, {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, {"EB", no_argument, NULL, OPTION_EB}, {"EL", no_argument, NULL, OPTION_EL}, {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, {"end-group", no_argument, NULL, ')'}, {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC}, {"format", required_argument, NULL, 'b'}, {"help", no_argument, NULL, OPTION_HELP}, {"Map", required_argument, NULL, OPTION_MAP}, {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY}, {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC}, {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, {"oformat", required_argument, NULL, OPTION_OFORMAT}, {"Qy", no_argument, NULL, OPTION_IGNORE}, {"qmagic", no_argument, NULL, OPTION_IGNORE}, /* Linux compatibility. */ {"relax", no_argument, NULL, OPTION_RELAX}, {"retain-symbols-file", required_argument, NULL, OPTION_RETAIN_SYMBOLS_FILE}, {"rpath", required_argument, NULL, OPTION_RPATH}, {"shared", no_argument, NULL, OPTION_SHARED}, {"soname", required_argument, NULL, OPTION_SONAME}, {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, {"start-group", no_argument, NULL, '('}, {"stats", no_argument, NULL, OPTION_STATS}, {"static", no_argument, NULL, OPTION_NON_SHARED}, {"Tbss", required_argument, NULL, OPTION_TBSS}, {"Tdata", required_argument, NULL, OPTION_TDATA}, {"Ttext", required_argument, NULL, OPTION_TTEXT}, {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, {"Ur", no_argument, NULL, OPTION_UR}, {"verbose", no_argument, NULL, OPTION_VERBOSE}, {"version", no_argument, NULL, OPTION_VERSION}, {"warn-common", no_argument, NULL, OPTION_WARN_COMMON}, {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS}, {"warn-once", no_argument, NULL, OPTION_WARN_ONCE}, {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC}, {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE}, {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE}, {NULL, no_argument, NULL, 0} }; /* The -G option is ambiguous on different platforms. Sometimes it specifies the largest data size to put into the small data section. Sometimes it is equivalent to --shared. Unfortunately, the first form takes an argument, while the second does not. We need to permit the --shared form because on some platforms, such as Solaris, gcc -shared will pass -G to the linker. To permit either usage, we look through the argument list. If we find -G not followed by a number, we change it into --shared. This will work for most normal cases. */ for (i = 1; i < argc; i++) if (strcmp (argv[i], "-G") == 0 && (i + 1 >= argc || ! isdigit (argv[i + 1][0]))) argv[i] = (char *) "--shared"; while (1) { /* getopt_long_only is like getopt_long, but '-' as well as '--' can indicate a long option. */ int longind; int optc; if (ldemul_parse_args (argc, argv)) continue; optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); if (optc == -1) break; switch (optc) { default: xexit (1); case 1: /* File name. */ lang_add_input_file (optarg, lang_input_file_is_file_enum, (char *) NULL); break; case OPTION_IGNORE: break; case 'a': /* For HP/UX compatibility. Actually -a shared should mean ``use only shared libraries'' but, then, we don't currently support shared libraries on HP/UX anyhow. */ if (strcmp (optarg, "archive") == 0) config.dynamic_link = false; else if (strcmp (optarg, "shared") == 0 || strcmp (optarg, "default") == 0) config.dynamic_link = true; else einfo ("%P%F: unrecognized -a option `%s'\n", optarg); break; case OPTION_ASSERT: /* FIXME: We just ignore these, except for pure-text, but we should handle them. */ if (strcmp (optarg, "definitions") == 0) ; else if (strcmp (optarg, "nodefinitions") == 0) ; else if (strcmp (optarg, "nosymbolic") == 0) ; else if (strcmp (optarg, "pure-text") == 0) { /* FIXME: This is wrong. We do it this way as a hack to support SunOS4, on which gcc -shared will pass -assert pure-text to the linker. The SunOS linker will automatically create a shared library if there are any undefined symbols, but our linker does not know how to do that (it seems to require an extra pass over the relocs). */ link_info.shared = true; } else einfo ("%P%F: unrecognized -assert option `%s'\n", optarg); break; case 'A': ldfile_add_arch (optarg); break; case 'b': lang_add_target (optarg); break; case 'c': ldfile_open_command_file (optarg); parser_input = input_mri_script; yyparse (); break; case OPTION_CALL_SHARED: config.dynamic_link = true; break; case OPTION_NON_SHARED: config.dynamic_link = false; break; case 'd': command_line.force_common_definition = true; break; case OPTION_DEFSYM: lex_redirect (optarg); parser_input = input_defsym; yyparse (); break; case OPTION_DYNAMIC_LINKER: command_line.interpreter = optarg; break; case OPTION_EB: command_line.endian = ENDIAN_BIG; break; case OPTION_EL: command_line.endian = ENDIAN_LITTLE; break; case OPTION_EMBEDDED_RELOCS: command_line.embedded_relocs = true; break; case OPTION_EXPORT_DYNAMIC: command_line.export_dynamic = true; break; case 'e': lang_add_entry (optarg, 1); break; case 'F': /* Ignore. */ break; case 'G': { char *end; g_switch_value = strtoul (optarg, &end, 0); if (*end) einfo ("%P%F: invalid number `%s'\n", optarg); } break; case 'g': /* Ignore. */ break; case OPTION_HELP: help (); xexit (0); break; case 'L': ldfile_add_library_path (optarg, true); break; case 'l': lang_add_input_file (optarg, lang_input_file_is_l_enum, (char *) NULL); break; case 'M': config.map_filename = "-"; break; case 'm': /* Ignore. Was handled in a pre-parse. */ break; case OPTION_MAP: config.map_filename = optarg; break; case 'N': config.text_read_only = false; config.magic_demand_paged = false; break; case 'n': config.magic_demand_paged = false; break; case OPTION_NO_KEEP_MEMORY: link_info.keep_memory = false; break; case OPTION_NOINHIBIT_EXEC: force_make_executable = true; break; case 'O': /* FIXME "-O " used to set the address of section . Was this for compatibility with something, or can we create a new option to do that (with a syntax similar to -defsym)? getopt can't handle two args to an option without kludges. */ break; case 'o': lang_add_output (optarg, 0); break; case OPTION_OFORMAT: lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0); break; case 'i': case 'r': link_info.relocateable = true; config.build_constructors = false; config.magic_demand_paged = false; config.text_read_only = false; config.dynamic_link = false; break; case 'R': /* The GNU linker traditionally uses -R to mean to include only the symbols from a file. The Solaris linker uses -R to set the path used by the runtime linker to find libraries. This is the GNU linker -rpath argument. We try to support both simultaneously by checking the file named. If it is a directory, rather than a regular file, we assume -rpath was meant. */ { struct stat s; if (stat (optarg, &s) >= 0 && ! S_ISDIR (s.st_mode)) { lang_add_input_file (optarg, lang_input_file_is_symbols_only_enum, (char *) NULL); break; } } /* Fall through. */ case OPTION_RPATH: if (command_line.rpath == NULL) command_line.rpath = buystring (optarg); else { char *buf; buf = xmalloc (strlen (command_line.rpath) + strlen (optarg) + 2); sprintf (buf, "%s:%s", command_line.rpath, optarg); free (command_line.rpath); command_line.rpath = buf; } break; case OPTION_RELAX: command_line.relax = true; break; case OPTION_RETAIN_SYMBOLS_FILE: add_keepsyms_file (optarg); break; case 'S': link_info.strip = strip_debugger; break; case 's': link_info.strip = strip_all; break; case OPTION_SHARED: link_info.shared = true; break; case 'h': /* Used on Solaris. */ case OPTION_SONAME: command_line.soname = optarg; break; case OPTION_SORT_COMMON: config.sort_common = true; break; case OPTION_STATS: config.stats = true; break; case OPTION_SYMBOLIC: link_info.symbolic = true; break; case 't': trace_files = true; break; case 'T': ldfile_open_command_file (optarg); parser_input = input_script; yyparse (); break; case OPTION_TBSS: set_section_start (".bss", optarg); break; case OPTION_TDATA: set_section_start (".data", optarg); break; case OPTION_TTEXT: set_section_start (".text", optarg); break; case OPTION_TRADITIONAL_FORMAT: config.traditional_format = true; break; case OPTION_UR: link_info.relocateable = true; config.build_constructors = true; config.magic_demand_paged = false; config.text_read_only = false; config.dynamic_link = false; break; case 'u': ldlang_add_undef (optarg); break; case OPTION_VERBOSE: ldversion (1); version_printed = true; trace_file_tries = true; break; case 'v': ldversion (0); version_printed = true; break; case 'V': ldversion (1); version_printed = true; break; case OPTION_VERSION: ldversion (0); version_printed = true; break; case OPTION_WARN_COMMON: config.warn_common = true; break; case OPTION_WARN_CONSTRUCTORS: config.warn_constructors = true; break; case OPTION_WARN_ONCE: config.warn_once = true; break; case OPTION_WHOLE_ARCHIVE: whole_archive = true; break; case 'X': link_info.discard = discard_l; break; case 'x': link_info.discard = discard_all; break; case 'Y': if (strncmp (optarg, "P,", 2) == 0) optarg += 2; default_dirlist = optarg; break; case 'y': add_ysym (optarg); break; case 'z': /* We accept and ignore this option for Solaris compatibility. Actually, on Solaris, optarg is not ignored. Someday we should handle it correctly. FIXME. */ break; case OPTION_SPLIT_BY_RELOC: config.split_by_reloc = atoi (optarg); break; case OPTION_SPLIT_BY_FILE: config.split_by_file = true; break; case '(': if (ingroup) { fprintf (stderr, "%s: may not nest groups (--help for usage)\n", program_name); xexit (1); } lang_enter_group (); ingroup = 1; break; case ')': if (! ingroup) { fprintf (stderr, "%s: group ended before it began (--help for usage)\n", program_name); xexit (1); } lang_leave_group (); ingroup = 0; break; } } if (ingroup) lang_leave_group (); if (default_dirlist != NULL) set_default_dirlist (default_dirlist); } /* Add the (colon-separated) elements of DIRLIST_PTR to the library search path. */ static void set_default_dirlist (dirlist_ptr) char *dirlist_ptr; { char *p; while (1) { p = strchr (dirlist_ptr, ':'); if (p != NULL) *p = 0; if (*dirlist_ptr) ldfile_add_library_path (dirlist_ptr, true); if (p == NULL) break; *p = ':'; dirlist_ptr = p + 1; } } static void set_section_start (sect, valstr) char *sect, *valstr; { char *end; unsigned long val = strtoul (valstr, &end, 16); if (*end) einfo ("%P%F: invalid hex number `%s'\n", valstr); lang_section_start (sect, exp_intop (val)); }