CbC/CbC_gcc: gcc/gcc.c comparison

comparison gcc/gcc.c @ 145:1830386684a0

gcc-9.2.0

author	anatofuz
date	Thu, 13 Feb 2020 11:34:05 +0900
parents	84e7813d76e9
children	351920fa3827

comparison

equal deleted inserted replaced

-:84e7813d76e9
+:1830386684a0
 /* Compiler driver program that can handle many languages.
-Copyright (C) 1987-2018 Free Software Foundation, Inc.
+Copyright (C) 1987-2020 Free Software Foundation, Inc.
 This file is part of GCC.
 GCC 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
 #include "opt-suggestions.h"
 #include "gcc.h"
 #include "diagnostic.h"
 #include "flags.h"
 #include "opts.h"
-#include "params.h"
 #include "filenames.h"
 #include "spellcheck.h"
 env.getenv ();
 and
 getenv ();
 Hence we need to use "get" for the accessor method, not "getenv".  */
-class env_manager
+struct env_manager
 {
 public:
 void init (bool can_restore, bool debug);
 const char *get (const char *name);
 void xput (const char *string);
 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
 static const char *pass_through_libs_spec_func (int, const char **);
 static const char *replace_extension_spec_func (int, const char **);
 static const char *greater_than_spec_func (int, const char **);
 static const char *debug_level_greater_than_spec_func (int, const char **);
+static const char *find_fortran_preinclude_file (int, const char **);
 static char *convert_white_space (char *);
 /* The Specs Language
 Specs are strings containing lines, each of which (if not blank)
 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
 {".r", "#Ratfor", 0, 0, 0},
 {".go", "#Go", 0, 1, 0},
+{".d", "#D", 0, 1, 0}, {".dd", "#D", 0, 1, 0}, {".di", "#D", 0, 1, 0},
 /* Next come the entries for C.  */
 {".c", "@c", 0, 0, 1},
 {"@c",
 /* cc1 has an integrated ISO C preprocessor.  We should invoke the
 external preprocessor if -save-temps is given.  */
 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
 { "pass-through-libs",	pass_through_libs_spec_func },
 { "replace-extension",	replace_extension_spec_func },
 { "gt",			greater_than_spec_func },
 { "debug-level-gt",		debug_level_greater_than_spec_func },
+{ "fortran-preinclude-file",	find_fortran_preinclude_file},
 #ifdef EXTRA_SPEC_FUNCTIONS
 EXTRA_SPEC_FUNCTIONS
 #endif
 { 0, 0 }
 };
 }
 add_prefix (pprefix, prefix, component, priority,
 	      require_machine_suffix, os_multilib);
 }
+/* Same as add_prefix, but prepending target_sysroot_hdrs_suffix to prefix.  */
+static void
+add_sysrooted_hdrs_prefix (struct path_prefix *pprefix, const char *prefix,
+			   const char *component,
+			   /* enum prefix_priority */ int priority,
+			   int require_machine_suffix, int os_multilib)
+{
+if (!IS_ABSOLUTE_PATH (prefix))
+fatal_error (input_location, "system path %qs is not absolute", prefix);
+if (target_system_root)
+{
+char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root);
+size_t sysroot_len = strlen (target_system_root);
+if (sysroot_len > 0
+	  && target_system_root[sysroot_len - 1] == DIR_SEPARATOR)
+	sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0';
+if (target_sysroot_hdrs_suffix)
+	prefix = concat (sysroot_no_trailing_dir_separator,
+			 target_sysroot_hdrs_suffix, prefix, NULL);
+else
+	prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL);
+free (sysroot_no_trailing_dir_separator);
+/* We have to override this because GCC's notion of sysroot
+	 moves along with GCC.  */
+component = "GCC";
+}
+add_prefix (pprefix, prefix, component, priority,
+	      require_machine_suffix, os_multilib);
+}
 /* Execute the command specified by the arguments on the current line of spec.
 When using pipes, this includes several piped-together commands
 with `|' between them.
 commands[0].argv = argbuf.address ();
 if (!wrapper_string)
 {
 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
-commands[0].argv[0] = (string) ? string : commands[0].argv[0];
+if (string)
+	commands[0].argv[0] = string;
 }
 for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++)
 if (arg && strcmp (arg, "|") == 0)
 {				/* each command.  */
 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
-	fatal_error (input_location, "-pipe not supported");
+	fatal_error (input_location, "%<-pipe%> not supported");
 #endif
-	argbuf[i] = 0; /* Termination of
+	argbuf[i] = 0; /* Termination of command args.  */
-						     command args.  */
 	commands[n_commands].prog = argbuf[i + 1];
 	commands[n_commands].argv
 	  = &(argbuf.address ())[i + 1];
 	string = find_a_file (&exec_prefixes, commands[n_commands].prog,
 			      X_OK, false);
 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
 				   ? PEX_RECORD_TIMES : 0),
 		  progname, temp_filename);
 if (pex == NULL)
-fatal_error (input_location, "pex_init failed: %m");
+fatal_error (input_location, "%<pex_init%> failed: %m");
 for (i = 0; i < n_commands; i++)
 {
 const char *errmsg;
 int err;
 compilers proper are treated just like completely unknown
 options.  */
 const struct cl_option *option = &cl_options[decoded->opt_index];
 if (option->cl_reject_driver)
-error ("unrecognized command line option %qs",
+error ("unrecognized command-line option %qs",
 	   decoded->orig_option_with_args_text);
 else
 save_switch (decoded->canonical_option[0],
 		 decoded->canonical_option_num_elements - 1,
 		 &decoded->canonical_option[1], false, true);
 case OPT_fdiagnostics_color_:
 diagnostic_color_init (dc, value);
 break;
+case OPT_fdiagnostics_urls_:
+diagnostic_urls_init (dc, value);
+break;
+case OPT_fdiagnostics_format_:
+diagnostic_output_format_init (dc,
+				     (enum diagnostics_output_format)value);
+break;
 case OPT_Wa_:
 {
 	int prev, j;
 	/* Pass the rest of this option to the assembler.  */
 	save_temps_flag = SAVE_TEMPS_CWD;
 else if (strcmp (arg, "obj") == 0
 	       || strcmp (arg, "object") == 0)
 	save_temps_flag = SAVE_TEMPS_OBJ;
 else
-	fatal_error (input_location, "%qs is an unknown -save-temps option",
+	fatal_error (input_location, "%qs is an unknown %<-save-temps%> option",
 		     decoded->orig_option_with_args_text);
 break;
 case OPT_no_canonical_prefixes:
 /* Already handled as a special case, so ignored here.  */
 if (save_temps_flag && use_pipes)
 {
 /* -save-temps overrides -pipe, so that temp files are produced */
 if (save_temps_flag)
-	warning (0, "-pipe ignored because -save-temps specified");
+	warning (0, "%<-pipe%> ignored because %<-save-temps%> specified");
 use_pipes = 0;
 }
 if (!compare_debug)
 {
 #endif
 /* More prefixes are enabled in main, after we read the specs file
 and determine whether this is cross-compilation or not.  */
-if (n_infiles == last_language_n_infiles && spec_lang != 0)
+if (n_infiles != 0 && n_infiles == last_language_n_infiles && spec_lang != 0)
 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
 environment variable.  */
 if (compare_debug == 2 || compare_debug == 3)
 save_switch (opt, 0, NULL, false, true);
 compare_debug = 1;
 }
 /* Ensure we only invoke each subprocess once.  */
-if (print_subprocess_help || print_help_list || print_version)
+if (n_infiles == 0
-{
+&& (print_subprocess_help || print_help_list || print_version))
-n_infiles = 0;
+{
 /* Create a dummy input file, so that we can pass
 	 the help option on to the various sub-processes.  */
 add_infile ("help-dummy", "c");
 }
 /* Create a new spec processing context, and build the function
 arguments.  */
 alloc_args ();
 if (do_spec_2 (args, soft_matched_part) < 0)
-fatal_error (input_location, "error in args to spec function %qs", func);
+fatal_error (input_location, "error in arguments to spec function %qs",
+		 func);
 /* argbuf_index is an index for the next argument to be inserted, and
 so contains the count of the args already inserted.  */
 funcval = (*sf->func) (argbuf.length (),
 #else
 thrmod = thread_model;
 #endif
 fnotice (file, "Thread model: %s\n", thrmod);
+fnotice (file, "Supported LTO compression algorithms: zlib");
+#ifdef HAVE_ZSTD_H
+fnotice (file, " zstd");
+#endif
+fnotice (file, "\n");
 /* compiler_version is truncated at the first space when initialized
 from version string, so truncate version_string at the first space
 before comparing.  */
 for (n = 0; version_string[n]; n++)
 if (append)
 pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND;
 pex = pex_init (PEX_USE_PIPES, new_argv[0], NULL);
 if (!pex)
-fatal_error (input_location, "pex_init failed: %m");
+fatal_error (input_location, "%<pex_init%> failed: %m");
 errmsg = pex_run (pex, pex_flags, new_argv[0],
-		    CONST_CAST2 (char *const *, const char **, &new_argv[1]), out_temp,
+		    CONST_CAST2 (char *const *, const char **, &new_argv[1]),
-		    err_temp, &err);
+		    out_temp, err_temp, &err);
 if (errmsg != NULL)
 {
 errno = err;
 fatal_error (input_location,
 		   err ? G_ ("cannot execute %qs: %s: %m")
 	length[i] = st.st_size;
 }
 if (!ret && length[0] != length[1])
 {
-	error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
+	error ("%s: %<-fcompare-debug%> failure (length)", gcc_input_filename);
 	ret = 1;
 }
 if (!ret)
 for (i = 0; i < 2; i++)
 if (!ret)
 {
 	if (memcmp (map[0], map[1], length[0]) != 0)
 	  {
-	    error ("%s: -fcompare-debug failure", gcc_input_filename);
+	    error ("%s: %<-fcompare-debug%> failure", gcc_input_filename);
 	    ret = 1;
 	  }
 }
 for (i = 0; i < 2; i++)
 	c0 = fgetc (temp[0]);
 	c1 = fgetc (temp[1]);
 	if (c0 != c1)
 	  {
-	    error ("%s: -fcompare-debug failure",
+	    error ("%s: %<-fcompare-debug%> failure",
 		   gcc_input_filename);
 	    ret = 1;
 	    break;
 	  }
 decoded_options array.  */
 void
 driver::decode_argv (int argc, const char **argv)
 {
-/* Register the language-independent parameters.  */
-global_init_params ();
-finish_params ();
 init_opts_obstack ();
 init_options_struct (&global_options, &global_options_set);
 decode_cmdline_options_to_array (argc, argv,
 				   CL_DRIVER,
 gcc_init_libintl ();
 diagnostic_initialize (global_dc, 0);
 diagnostic_color_init (global_dc);
+diagnostic_urls_init (global_dc);
 #ifdef GCC_DRIVER_HOST_INITIALIZATION
 /* Perform host dependent initialization when needed.  */
 GCC_DRIVER_HOST_INITIALIZATION;
 #endif
 if (*sysroot_suffix_spec != 0
 && !no_sysroot_suffix
 && do_spec_2 (sysroot_suffix_spec, NULL) == 0)
 {
 if (argbuf.length () > 1)
-error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
+	error ("spec failure: more than one argument to "
+	       "%<SYSROOT_SUFFIX_SPEC%>");
 else if (argbuf.length () == 1)
 target_sysroot_suffix = xstrdup (argbuf.last ());
 }
 #ifdef HAVE_LD_SYSROOT
 if (*sysroot_hdrs_suffix_spec != 0
 && !no_sysroot_suffix
 && do_spec_2 (sysroot_hdrs_suffix_spec, NULL) == 0)
 {
 if (argbuf.length () > 1)
-error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
+	error ("spec failure: more than one argument "
+	       "to %<SYSROOT_HEADERS_SUFFIX_SPEC%>");
 else if (argbuf.length () == 1)
 target_sysroot_hdrs_suffix = xstrdup (argbuf.last ());
 }
 /* Look for startfiles in the standard places.  */
 for (size_t i = 0; (int) i < n_switches; i++)
 if (! switches[i].validated)
 {
 	const char *hint = m_option_proposer.suggest_option (switches[i].part1);
 	if (hint)
-	  error ("unrecognized command line option %<-%s%>;"
+	  error ("unrecognized command-line option %<-%s%>;"
 		 " did you mean %<-%s%>?",
 		 switches[i].part1, hint);
 	else
-	  error ("unrecognized command line option %<-%s%>",
+	  error ("unrecognized command-line option %<-%s%>",
 		 switches[i].part1);
 }
 }
 /* Handle the various -print-* options, returning 0 if the driver
 if (print_version)
 {
 printf (_("%s %s%s\n"), progname, pkgversion_string,
 	      version_string);
-printf ("Copyright %s 2018 Free Software Foundation, Inc.\n",
+printf ("Copyright %s 2020 Free Software Foundation, Inc.\n",
 	      _("(C)"));
 fputs (_("This is free software; see the source for copying conditions.  There is NO\n\
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
 	     stdout);
 if (! verbose_flag)
 infiles[i].preprocessed = false;
 }
 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
 fatal_error (input_location,
-		 "cannot specify -o with -c, -S or -E with multiple files");
+		 "cannot specify %<-o%> with %<-c%>, %<-S%> or %<-E%> "
+		 "with multiple files");
 /* No early exit needed from main; we can continue.  */
 return false;
 }
 		this_file_error = 1;
 	      else if (compare_debug && debug_check_temp_file[0])
 		{
 		  if (verbose_flag)
 		    inform (UNKNOWN_LOCATION,
-			    "recompiling with -fcompare-debug");
+			    "recompiling with %<-fcompare-debug%>");
 		  compare_debug = -compare_debug;
 		  n_switches = n_switches_debug_check[1];
 		  n_switches_alloc = n_switches_alloc_debug_check[1];
 		  switches = switches_debug_check[1];
 		  n_switches_alloc = n_switches_alloc_debug_check[0];
 		  switches = switches_debug_check[0];
 		  if (value < 0)
 		    {
-		      error ("during -fcompare-debug recompilation");
+		      error ("during %<-fcompare-debug%> recompilation");
 		      this_file_error = 1;
 		    }
 		  gcc_assert (debug_check_temp_file[1]
 			      && filename_cmp (debug_check_temp_file[0],
 /* Run ld to link all the compiler output files.  */
 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
 {
 int tmp = execution_count;
+detect_jobserver ();
 if (! have_c)
 	{
 #if HAVE_LTO_PLUGIN > 0
 #if HAVE_LTO_PLUGIN == 2
 	      char *temp_spec = find_a_file (&exec_prefixes,
 					     LTOPLUGINSONAME, R_OK,
 					     false);
 	      if (!temp_spec)
 		fatal_error (input_location,
-			     "-fuse-linker-plugin, but %s not found",
+			     "%<-fuse-linker-plugin%>, but %s not found",
 			     LTOPLUGINSONAME);
 	      linker_plugin_file_spec = convert_white_space (temp_spec);
 	    }
 #endif
 	  lto_gcc_spec = argv0;
 if (print_help_list)
 {
 printf (("\nFor bug reporting instructions, please see:\n"));
 printf ("%s\n", bug_report_url);
+}
+}
+/* Detect whether jobserver is active and working.  If not drop
+--jobserver-auth from MAKEFLAGS.  */
+void
+driver::detect_jobserver () const
+{
+/* Detect jobserver and drop it if it's not working.  */
+const char *makeflags = env.get ("MAKEFLAGS");
+if (makeflags != NULL)
+{
+const char *needle = "--jobserver-auth=";
+const char *n = strstr (makeflags, needle);
+if (n != NULL)
+	{
+	  int rfd = -1;
+	  int wfd = -1;
+	  bool jobserver
+	    = (sscanf (n + strlen (needle), "%d,%d", &rfd, &wfd) == 2
+	       && rfd > 0
+	       && wfd > 0
+	       && is_valid_fd (rfd)
+	       && is_valid_fd (wfd));
+	  /* Drop the jobserver if it's not working now.  */
+	  if (!jobserver)
+	    {
+	      unsigned offset = n - makeflags;
+	      char *dup = xstrdup (makeflags);
+	      dup[offset] = '\0';
+	      const char *space = strchr (makeflags + offset, ' ');
+	      if (space != NULL)
+		strcpy (dup + offset, space);
+	      xputenv (concat ("MAKEFLAGS=", dup, NULL));
+	    }
+	}
 }
 }
 /* Determine what the exit code of the driver should be.  */
 static int n_mdswitches;
 /* Check whether a particular argument was used.  The first time we
 canonicalize the switches to keep only the ones we care about.  */
-class used_arg_t
+struct used_arg_t
 {
 public:
 int operator () (const char *p, int len);
 void finalize ();
 return NULL;
 len = strlen (argv[0]);
 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
 fatal_error (input_location, "argument to %%:compare-debug-auxbase-opt "
-		 "does not end in .gk");
+		 "does not end in %<.gk%>");
 if (debug_auxbase_opt)
 return debug_auxbase_opt;
 #define OPT "-auxbase "
 return "";
 return NULL;
 }
+static void
+path_prefix_reset (path_prefix *prefix)
+{
+struct prefix_list *iter, *next;
+iter = prefix->plist;
+while (iter)
+{
+next = iter->next;
+free (const_cast <char *> (iter->prefix));
+XDELETE (iter);
+iter = next;
+}
+prefix->plist = 0;
+prefix->max_len = 0;
+}
+/* The function takes 3 arguments: OPTION name, file name and location
+where we search for Fortran modules.
+When the FILE is found by find_file, return OPTION=path_to_file.  */
+static const char *
+find_fortran_preinclude_file (int argc, const char **argv)
+{
+char *result = NULL;
+if (argc != 3)
+return NULL;
+struct path_prefix prefixes = { 0, 0, "preinclude" };
+/* Search first for 'finclude' folder location for a header file
+installed by the compiler (similar to omp_lib.h).  */
+add_prefix (&prefixes, argv[2], NULL, 0, 0, 0);
+#ifdef TOOL_INCLUDE_DIR
+/* Then search: <prefix>/<target>/<include>/finclude */
+add_prefix (&prefixes, TOOL_INCLUDE_DIR "/finclude/",
+	      NULL, 0, 0, 0);
+#endif
+#ifdef NATIVE_SYSTEM_HEADER_DIR
+/* Then search: <sysroot>/usr/include/finclude/<multilib> */
+add_sysrooted_hdrs_prefix (&prefixes, NATIVE_SYSTEM_HEADER_DIR "/finclude/",
+			     NULL, 0, 0, 0);
+#endif
+const char *path = find_a_file (&include_prefixes, argv[1], R_OK, false);
+if (path != NULL)
+result = concat (argv[0], path, NULL);
+else
+{
+path = find_a_file (&prefixes, argv[1], R_OK, false);
+if (path != NULL)
+	result = concat (argv[0], path, NULL);
+}
+path_prefix_reset (&prefixes);
+return result;
+}
 /* Insert backslash before spaces in ORIG (usually a file path), to
 avoid being broken by spec parser.
 This function is needed as do_spec_1 treats white space (' ' and '\t')
 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
 }
 else
 return orig;
 }
-static void
-path_prefix_reset (path_prefix *prefix)
-{
-struct prefix_list *iter, *next;
-iter = prefix->plist;
-while (iter)
-{
-next = iter->next;
-free (const_cast <char *> (iter->prefix));
-XDELETE (iter);
-iter = next;
-}
-prefix->plist = 0;
-prefix->max_len = 0;
-}
 /* Restore all state within gcc.c to the initial state, so that the driver
 code can be safely re-run in-process.
 Many const char * variables are referenced by static specs (see
 INIT_STATIC_SPEC above).  These variables are restored to their default
 void
 driver::finalize ()
 {
 env.restore ();
-params_c_finalize ();
 diagnostic_finish (global_dc);
 is_cpp_driver = 0;
 at_file_supplied = 0;
 print_help_list = 0;
 save_temps_flag = SAVE_TEMPS_NONE;
 save_temps_prefix = 0;
 save_temps_length = 0;
 spec_machine = DEFAULT_TARGET_MACHINE;
 greatest_status = 1;
-finalize_options_struct (&global_options);
-finalize_options_struct (&global_options_set);
 obstack_free (&obstack, NULL);
 obstack_free (&opts_obstack, NULL); /* in opts.c */
 obstack_free (&collect_obstack, NULL);

Mercurial > hg > CbC > CbC_gcc

comparison gcc/gcc.c @ 145:1830386684a0