diff options
Diffstat (limited to 'gcc-4.7/gcc/collect2.c')
| -rw-r--r-- | gcc-4.7/gcc/collect2.c | 115 |
1 files changed, 104 insertions, 11 deletions
diff --git a/gcc-4.7/gcc/collect2.c b/gcc-4.7/gcc/collect2.c index a44b2e7bc..7429309ac 100644 --- a/gcc-4.7/gcc/collect2.c +++ b/gcc-4.7/gcc/collect2.c @@ -1021,6 +1021,8 @@ int main (int argc, char **argv) { static const char *const ld_suffix = "ld"; + static const char *const gold_suffix = "ld.gold"; + static const char *const bfd_ld_suffix = "ld.bfd"; static const char *const plugin_ld_suffix = PLUGIN_LD; static const char *const real_ld_suffix = "real-ld"; static const char *const collect_ld_suffix = "collect-ld"; @@ -1040,6 +1042,10 @@ main (int argc, char **argv) const char *const full_ld_suffix = concat(target_machine, "-", ld_suffix, NULL); + const char *const full_gold_suffix = + concat (target_machine, "-", gold_suffix, NULL); + const char *const full_bfd_ld_suffix = + concat (target_machine, "-", bfd_ld_suffix, NULL); const char *const full_plugin_ld_suffix = concat(target_machine, "-", plugin_ld_suffix, NULL); const char *const full_nm_suffix = @@ -1056,6 +1062,8 @@ main (int argc, char **argv) concat (target_machine, "-", gstrip_suffix, NULL); #else const char *const full_ld_suffix = ld_suffix; + const char *const full_gold_suffix = gold_suffix; + const char *const full_bfd_ld_suffix = bfd_ld_suffix; const char *const full_plugin_ld_suffix = plugin_ld_suffix; const char *const full_nm_suffix = nm_suffix; const char *const full_gnm_suffix = gnm_suffix; @@ -1077,7 +1085,13 @@ main (int argc, char **argv) const char **c_ptr; char **ld1_argv; const char **ld1; - bool use_plugin = false; + enum linker_select + { + DFLT_LINKER, + PLUGIN_LINKER, + GOLD_LINKER, + BFD_LINKER + } selected_linker = DFLT_LINKER; /* The kinds of symbols we will have to consider when scanning the outcome of a first pass link. This is ALL to start with, then might @@ -1168,15 +1182,21 @@ main (int argc, char **argv) else if (! strcmp (argv[i], "-flto-partition=none")) no_partition = true; else if ((! strncmp (argv[i], "-flto=", 6) - || ! strcmp (argv[i], "-flto")) && ! use_plugin) + || ! strcmp (argv[i], "-flto")) + && selected_linker != PLUGIN_LINKER) lto_mode = LTO_MODE_WHOPR; else if (!strncmp (argv[i], "-fno-lto", 8)) lto_mode = LTO_MODE_NONE; else if (! strcmp (argv[i], "-plugin")) { - use_plugin = true; + selected_linker = PLUGIN_LINKER; lto_mode = LTO_MODE_NONE; } + else if (! strcmp (argv[i], "-use-gold")) + selected_linker = GOLD_LINKER; + else if (! strcmp (argv[i], "-use-ld")) + selected_linker = BFD_LINKER; + #ifdef COLLECT_EXPORT_LIST /* since -brtl, -bexport, -b64 are not position dependent also check for them here */ @@ -1276,17 +1296,90 @@ main (int argc, char **argv) /* Search the compiler directories for `ld'. We have protection against recursive calls in find_a_file. */ if (ld_file_name == 0) - ld_file_name = find_a_file (&cpath, - use_plugin - ? plugin_ld_suffix - : ld_suffix); + switch (selected_linker) + { + default: + case DFLT_LINKER: + ld_file_name = find_a_file (&cpath, ld_suffix); + break; + case PLUGIN_LINKER: + ld_file_name = find_a_file (&cpath, plugin_ld_suffix); + break; + case GOLD_LINKER: + ld_file_name = find_a_file (&cpath, gold_suffix); + break; + case BFD_LINKER: + ld_file_name = find_a_file (&cpath, bfd_ld_suffix); + break; + } /* Search the ordinary system bin directories for `ld' (if native linking) or `TARGET-ld' (if cross). */ if (ld_file_name == 0) - ld_file_name = find_a_file (&path, - use_plugin - ? full_plugin_ld_suffix - : full_ld_suffix); + switch (selected_linker) + { + default: + case DFLT_LINKER: + ld_file_name = find_a_file (&path, full_ld_suffix); + break; + case PLUGIN_LINKER: + ld_file_name = find_a_file (&path, full_plugin_ld_suffix); + break; + case GOLD_LINKER: + ld_file_name = find_a_file (&path, full_gold_suffix); + break; + case BFD_LINKER: + ld_file_name = find_a_file (&path, full_bfd_ld_suffix); + break; + } + /* If we failed to find a plugin-capable linker, try the ordinary one. */ + if (ld_file_name == 0 && selected_linker == PLUGIN_LINKER) + ld_file_name = find_a_file (&cpath, ld_suffix); + + if ((vflag || debug) && ld_file_name == 0) + { + struct prefix_list * p; + const char * s; + + notice ("collect2: warning: unable to find linker.\n"); + +#ifdef DEFAULT_LINKER + notice (" Searched for this absolute executable:\n"); + notice (" %s\n", DEFAULT_LINKER); +#endif + + notice (" Searched in these paths:\n"); + for (p = cpath.plist; p != NULL; p = p->next) + notice (" %s\n", p->prefix); + notice (" For these executables:\n"); + notice (" %s\n", real_ld_suffix); + notice (" %s\n", collect_ld_suffix); + switch (selected_linker) + { + default: + case DFLT_LINKER: s = ld_suffix; break; + case PLUGIN_LINKER: s = plugin_ld_suffix; break; + case GOLD_LINKER: s = gold_suffix; break; + case BFD_LINKER: s = bfd_ld_suffix; break; + } + notice (" %s\n", s); + + notice (" And searched in these paths:\n"); + for (p = path.plist; p != NULL; p = p->next) + notice (" %s\n", p->prefix); + notice (" For these executables:\n"); +#ifdef REAL_LD_FILE_NAME + notice (" %s\n", REAL_LD_FILE_NAME); +#endif + switch (selected_linker) + { + default: + case DFLT_LINKER: s = full_ld_suffix; break; + case PLUGIN_LINKER: s = full_plugin_ld_suffix; break; + case GOLD_LINKER: s = full_gold_suffix; break; + case BFD_LINKER: s = full_bfd_ld_suffix; break; + } + notice (" %s\n", s); + } #ifdef REAL_NM_FILE_NAME nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME); |