gcc/gcc-ar.c

   1 /* Wrapper for ar/ranlib/nm to pass the LTO plugin.
   2    Copyright (C) 2011, 2012 Free Software Foundation, Inc.
   3    Contributed by Andi Kleen.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "libiberty.h"
  24
  25 #ifndef PERSONALITY
  26 #error "Please set personality"
  27 #endif
  28
  29 static const char standard_libexec_prefix[] = STANDARD_LIBEXEC_PREFIX;
  30 static const char standard_bin_prefix[] = STANDARD_BINDIR_PREFIX;
  31 static const char *const target_machine = TARGET_MACHINE;
  32
  33 static const char dir_separator[] = { DIR_SEPARATOR, 0 };
  34
  35 int
  36 main(int ac, char **av)
  37 {
  38   const char *nprefix;
  39   const char *exe_name;
  40   char *plugin;
  41   int k, status, err;
  42   const char *err_msg;
  43   const char **nargv;
  44   bool is_ar = !strcmp (PERSONALITY, "ar");
  45   int exit_code = FATAL_EXIT_CODE;
  46
  47   exe_name = PERSONALITY;
  48 #ifdef CROSS_DIRECTORY_STRUCTURE
  49   exe_name = concat (target_machine, "-", exe_name, NULL);
  50 #endif
  51
  52   /* Find plugin */
  53   /* XXX implement more magic from gcc.c? */
  54   nprefix = getenv ("GCC_EXEC_PREFIX");
  55   if (!nprefix)
  56     nprefix = av[0];
  57   else
  58     nprefix = concat (nprefix, "gcc-" PERSONALITY, NULL);
  59
  60   nprefix = make_relative_prefix (nprefix,
  61                                   standard_bin_prefix,
  62                                   standard_libexec_prefix);
  63   if (nprefix == NULL)
  64     nprefix = standard_libexec_prefix;
  65
  66   plugin = concat (nprefix,
  67                    dir_separator,
  68                    DEFAULT_TARGET_MACHINE,
  69                    dir_separator,
  70                    DEFAULT_TARGET_VERSION,
  71                    dir_separator,
  72                    LTOPLUGINSONAME,
  73                    NULL);
  74   if (access (plugin, R_OK))
  75     {
  76       fprintf (stderr, "%s: Cannot find plugin %s\n", av[0], plugin);
  77       exit (1);
  78     }
  79
  80   /* Create new command line with plugin */
  81   nargv = XCNEWVEC (const char *, ac + 4);
  82   nargv[0] = exe_name;
  83   nargv[1] = "--plugin";
  84   nargv[2] = plugin;
  85   if (is_ar && av[1] && av[1][0] != '-')
  86     av[1] = concat("-", av[1], NULL);
  87   for (k = 1; k < ac; k++)
  88     nargv[2 + k] = av[k];
  89   nargv[2 + k] = NULL;
  90
  91   /* Run utility */
  92   /* ??? the const is misplaced in pex_one's argv? */
  93   err_msg = pex_one (PEX_LAST|PEX_SEARCH,
  94                      exe_name,
  95                      CONST_CAST2 (char * const *, const char **, nargv),
  96                      concat("gcc-", exe_name, NULL),
  97                      NULL,NULL,  &status, &err);
  98   if (err_msg)
  99     fprintf(stderr, "Error running %s: %s\n", exe_name, err_msg);
 100   else if (status)
 101     {
 102       if (WIFSIGNALED (status))
 103         {
 104           int sig = WTERMSIG (status);
 105           fprintf (stderr, "%s terminated with signal %d [%s]%s\n",
 106                    exe_name, sig, strsignal(sig),
 107                    WCOREDUMP(status) ? ", core dumped" : "");
 108         }
 109       else if (WIFEXITED (status))
 110         exit_code = WEXITSTATUS (status);
 111     }
 112   else
 113     exit_code = SUCCESS_EXIT_CODE;
 114
 115   return exit_code;
 116 }