+/* Display the command line switches accepted by gcc. */
+static void
+display_help ()
+{
+ printf ("Usage: %s [options] file...\n", programname);
+ printf ("Options:\n");
+
+ printf (" --help Display this information\n");
+ if (! verbose_flag)
+ printf (" (Use '-v --help' to display command line options of sub-processes)\n");
+ printf (" -dumpspecs Display all of the built in spec strings\n");
+ printf (" -dumpversion Display the version of the compiler\n");
+ printf (" -dumpmachine Display the compiler's target processor\n");
+ printf (" -print-search-dirs Display the directories in the compiler's search path\n");
+ printf (" -print-libgcc-file-name Display the name of the compiler's companion library\n");
+ printf (" -print-file-name=<lib> Display the full path to library <lib>\n");
+ printf (" -print-prog-name=<prog> Display the full path to compiler component <prog>\n");
+ printf (" -print-multi-directory Display the root directory for versions of libgcc\n");
+ printf (" -print-multi-lib Display the mapping between command line options and\n");
+ printf (" multiple library search directories\n");
+ printf (" -Wa,<options> Pass comma-separated <options> on to the assembler\n");
+ printf (" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n");
+ printf (" -Wl,<options> Pass comma-separated <options> on to the linker\n");
+ printf (" -Xlinker <arg> Pass <arg> on to the linker\n");
+ printf (" -save-temps Do not delete intermediate files\n");
+ printf (" -pipe Use pipes rather than intermediate files\n");
+ printf (" -specs=<file> Override builtin specs with the contents of <file>\n");
+ printf (" -B <directory> Add <directory> to the compiler's search paths\n");
+ printf (" -b <machine> Run gcc for target <machine>, if installed\n");
+ printf (" -V <version> Run gcc version number <version>, if installed\n");
+ printf (" -v Display the programs invoked by the compiler\n");
+ printf (" -E Preprocess only; do not compile, assemble or link\n");
+ printf (" -S Compile only; do not assemble or link\n");
+ printf (" -c Compile and assemble, but do not link\n");
+ printf (" -o <file> Place the output into <file>\n");
+ printf (" -x <language> Specify the language of the following input files\n");
+ printf (" Permissable languages include: c c++ assembler none\n");
+ printf (" 'none' means revert to the default behaviour of\n");
+ printf (" guessing the language based on the file's extension\n");
+
+ printf ("\nOptions starting with -g, -f, -m, -O or -W are automatically passed on to\n");
+ printf ("the various sub-processes invoked by %s. In order to pass other options\n",
+ programname);
+ printf ("on to these processes the -W<letter> options must be used.\n");
+
+ /* The rest of the options are displayed by invocations of the various
+ sub-processes. */
+}
+
+static void
+add_preprocessor_option (option, len)
+ char * option;
+ int len;
+{
+ n_preprocessor_options++;
+
+ if (! preprocessor_options)
+ preprocessor_options
+ = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
+ else
+ preprocessor_options
+ = (char **) xrealloc (preprocessor_options,
+ n_preprocessor_options * sizeof (char *));
+
+ preprocessor_options [n_preprocessor_options - 1] = save_string (option, len);
+}
+
+static void
+add_assembler_option (option, len)
+ char * option;
+ int len;
+{
+ n_assembler_options++;
+
+ if (! assembler_options)
+ assembler_options
+ = (char **) xmalloc (n_assembler_options * sizeof (char *));
+ else
+ assembler_options
+ = (char **) xrealloc (assembler_options,
+ n_assembler_options * sizeof (char *));
+
+ assembler_options [n_assembler_options - 1] = save_string (option, len);
+}
+
+static void
+add_linker_option (option, len)
+ char * option;
+ int len;
+{
+ n_linker_options++;
+
+ if (! linker_options)
+ linker_options
+ = (char **) xmalloc (n_linker_options * sizeof (char *));
+ else
+ linker_options
+ = (char **) xrealloc (linker_options,
+ n_linker_options * sizeof (char *));
+
+ linker_options [n_linker_options - 1] = save_string (option, len);
+}
+\f
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