PR tree-optimization/37662

[pf3gnuchains/gcc-fork.git] / gcc / gcc.c

diff --git a/gcc/gcc.c b/gcc/gcc.c
index 3da40a8..75dc67d 100644 (file)
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -155,6 +155,8 @@ static const char *print_prog_name = NULL;
 
 static int print_multi_directory;
 
+static int print_sysroot;
+
 /* Flag saying to print the relative path we'd use to
    find OS libraries given the current compiler flags.  */
 
@@ -817,7 +819,7 @@ static const char *cpp_unique_options =
    in turn cause preprocessor symbols to be defined specially.  */
 static const char *cpp_options =
 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
- %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
+ %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
  %{undef} %{save-temps:-fpch-preprocess}";
 
 /* This contains cpp options which are not passed when the preprocessor
@@ -1162,6 +1164,7 @@ static const struct option_map option_map[] =
    {"--print-multi-directory", "-print-multi-directory", 0},
    {"--print-multi-os-directory", "-print-multi-os-directory", 0},
    {"--print-prog-name", "-print-prog-name=", "aj"},
+   {"--print-sysroot", "-print-sysroot", 0},
    {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
    {"--profile", "-p", 0},
    {"--profile-blocks", "-a", 0},
@@ -2973,7 +2976,7 @@ execute (void)
       for (argc = 0; commands[i].argv[argc] != NULL; argc++)
        ;
 
-      argv = alloca ((argc + 3) * sizeof (char *));
+      argv = XALLOCAVEC (const char *, argc + 3);
 
       argv[0] = VALGRIND_PATH;
       argv[1] = "-q";
@@ -3244,6 +3247,7 @@ display_help (void)
   -print-multi-lib         Display the mapping between command line options and\n\
                            multiple library search directories\n"), stdout);
   fputs (_("  -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
+  fputs (_("  -print-sysroot           Display the target libraries directory\n"), stdout);
   fputs (_("  -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
   fputs (_("  -Wa,<options>            Pass comma-separated <options> on to the assembler\n"), stdout);
   fputs (_("  -Wp,<options>            Pass comma-separated <options> on to the preprocessor\n"), stdout);
@@ -3686,6 +3690,8 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"
        print_multi_lib = 1;
       else if (! strcmp (argv[i], "-print-multi-directory"))
        print_multi_directory = 1;
+      else if (! strcmp (argv[i], "-print-sysroot"))
+       print_sysroot = 1;
       else if (! strcmp (argv[i], "-print-multi-os-directory"))
        print_multi_os_directory = 1;
       else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
@@ -4126,6 +4132,8 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"
        ;
       else if (! strcmp (argv[i], "-print-multi-directory"))
        ;
+      else if (! strcmp (argv[i], "-print-sysroot"))
+       ;
       else if (! strcmp (argv[i], "-print-multi-os-directory"))
        ;
       else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
@@ -6529,6 +6537,18 @@ main (int argc, char **argv)
       return (0);
     }
 
+  if (print_sysroot)
+    {
+      if (target_system_root)
+       {
+          if (target_sysroot_suffix)
+           printf ("%s%s\n", target_system_root, target_sysroot_suffix);
+          else
+           printf ("%s\n", target_system_root);
+       }
+      return (0);
+    }
+
   if (print_multi_os_directory)
     {
       if (multilib_os_dir == NULL)
@@ -8024,7 +8044,7 @@ include_spec_function (int argc, const char **argv)
   if (argc != 1)
     abort ();
 
-  file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
+  file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
   read_specs (file ? file : argv[0], FALSE);
 
   return NULL;