Tarball conversion

1 files changed, 374 insertions, 0 deletions

diff --git a/gcc/cp/g++spec.c b/gcc/cp/g++spec.c
new file mode 100644
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+++ b/gcc/cp/g++spec.c
@@ -0,0 +1,374 @@
+/* Specific flags and argument handling of the C++ front end.
+   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+   2007, 2008, 2009, 2010, 2011 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 Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "gcc.h"
+#include "opts.h"
+
+/* This bit is set if we saw a `-xfoo' language specification.  */
+#define LANGSPEC	(1<<1)
+/* This bit is set if they did `-lm' or `-lmath'.  */
+#define MATHLIB		(1<<2)
+/* This bit is set if they did `-lc'.  */
+#define WITHLIBC	(1<<3)
+/* Skip this option.  */
+#define SKIPOPT		(1<<4)
+
+#ifndef MATH_LIBRARY
+#define MATH_LIBRARY "m"
+#endif
+#ifndef MATH_LIBRARY_PROFILE
+#define MATH_LIBRARY_PROFILE MATH_LIBRARY
+#endif
+
+#ifndef LIBSTDCXX
+#define LIBSTDCXX "stdc++"
+#endif
+#ifndef LIBSTDCXX_PROFILE
+#define LIBSTDCXX_PROFILE LIBSTDCXX
+#endif
+#ifndef LIBSTDCXX_STATIC
+#define LIBSTDCXX_STATIC NULL
+#endif
+
+void
+lang_specific_driver (struct cl_decoded_option **in_decoded_options,
+		      unsigned int *in_decoded_options_count,
+		      int *in_added_libraries)
+{
+  unsigned int i, j;
+
+  /* If nonzero, the user gave us the `-p' or `-pg' flag.  */
+  int saw_profile_flag = 0;
+
+  /* What do with libstdc++:
+     -1 means we should not link in libstdc++
+     0  means we should link in libstdc++ if it is needed
+     1  means libstdc++ is needed and should be linked in.
+     2  means libstdc++ is needed and should be linked statically.  */
+  int library = 0;
+
+  /* The number of arguments being added to what's in argv, other than
+     libraries.  We use this to track the number of times we've inserted
+     -xc++/-xnone.  */
+  int added = 0;
+
+  /* The new argument list will be contained in this.  */
+  struct cl_decoded_option *new_decoded_options;
+
+  /* Nonzero if we saw a `-xfoo' language specification on the
+     command line.  Used to avoid adding our own -xc++ if the user
+     already gave a language for the file.  */
+  int saw_speclang = 0;
+
+  /* "-lm" or "-lmath" if it appears on the command line.  */
+  const struct cl_decoded_option *saw_math = NULL;
+
+  /* "-lc" if it appears on the command line.  */
+  const struct cl_decoded_option *saw_libc = NULL;
+
+  /* An array used to flag each argument that needs a bit set for
+     LANGSPEC, MATHLIB, or WITHLIBC.  */
+  int *args;
+
+  /* By default, we throw on the math library if we have one.  */
+  int need_math = (MATH_LIBRARY[0] != '\0');
+
+  /* True if we saw -static.  */
+  int static_link = 0;
+
+  /* True if we should add -shared-libgcc to the command-line.  */
+  int shared_libgcc = 1;
+
+  /* The total number of arguments with the new stuff.  */
+  unsigned int argc;
+
+  /* The argument list.  */
+  struct cl_decoded_option *decoded_options;
+
+  /* The number of libraries added in.  */
+  int added_libraries;
+
+  /* The total number of arguments with the new stuff.  */
+  unsigned int num_args = 1;
+
+  argc = *in_decoded_options_count;
+  decoded_options = *in_decoded_options;
+  added_libraries = *in_added_libraries;
+
+  args = XCNEWVEC (int, argc);
+
+  for (i = 1; i < argc; i++)
+    {
+      const char *arg = decoded_options[i].arg;
+      if (decoded_options[i].errors & CL_ERR_MISSING_ARG)
+	continue; /* Avoid examining arguments of options missing them.  */
+
+      switch (decoded_options[i].opt_index)
+	{
+	case OPT_nostdlib:
+	case OPT_nodefaultlibs:
+	  library = -1;
+	  break;
+
+	case OPT_l:
+	  if (strcmp (arg, MATH_LIBRARY) == 0)
+	    {
+	      args[i] |= MATHLIB;
+	      need_math = 0;
+	    }
+	  else if (strcmp (arg, "c") == 0)
+	    args[i] |= WITHLIBC;
+	  else
+	    /* Unrecognized libraries (e.g. -lfoo) may require libstdc++.  */
+	    library = (library == 0) ? 1 : library;
+	  break;
+
+	case OPT_pg:
+	case OPT_p:
+	  saw_profile_flag++;
+	  break;
+
+	case OPT_x:
+	  if (library == 0
+	      && (strcmp (arg, "c++") == 0
+		  || strcmp (arg, "c++-cpp-output") == 0
+		  || strcmp (arg, "objective-c++") == 0
+		  || strcmp (arg, "objective-c++-cpp-output") == 0))
+	    library = 1;
+		
+	  saw_speclang = 1;
+	  break;
+
+	case OPT_Xlinker:
+	case OPT_Wl_:
+	  /* Arguments that go directly to the linker might be .o files,
+	     or something, and so might cause libstdc++ to be needed.  */
+	  if (library == 0)
+	    library = 1;
+	  break;
+
+	case OPT_c:
+	case OPT_S:
+	case OPT_E:
+	case OPT_M:
+	case OPT_MM:
+	case OPT_fsyntax_only:
+	  /* Don't specify libraries if we won't link, since that would
+	     cause a warning.  */
+	  library = -1;
+	  break;
+
+	case OPT_static:
+	  static_link = 1;
+	  break;
+
+	case OPT_static_libgcc:
+	  shared_libgcc = 0;
+	  break;
+
+	case OPT_static_libstdc__:
+	  library = library >= 0 ? 2 : library;
+	  args[i] |= SKIPOPT;
+	  break;
+
+	case OPT_SPECIAL_input_file:
+	  {
+	    int len;
+
+	    /* We don't do this anymore, since we don't get them with minus
+	       signs on them.  */
+	    if (arg[0] == '\0' || arg[1] == '\0')
+	      continue;
+
+	    if (saw_speclang)
+	      {
+		saw_speclang = 0;
+		continue;
+	      }
+
+	    /* If the filename ends in .[chi], put options around it.
+	       But not if a specified -x option is currently active.  */
+	    len = strlen (arg);
+	    if (len > 2
+		&& (arg[len - 1] == 'c'
+		    || arg[len - 1] == 'i'
+		    || arg[len - 1] == 'h')
+		&& arg[len - 2] == '.')
+	      {
+		args[i] |= LANGSPEC;
+		added += 2;
+	      }
+
+	    /* If we don't know that this is a header file, we might
+	       need to be linking in the libraries.  */
+	    if (library == 0)
+	      {
+		if ((len <= 2 || strcmp (arg + (len - 2), ".H") != 0)
+		    && (len <= 2 || strcmp (arg + (len - 2), ".h") != 0)
+		    && (len <= 4 || strcmp (arg + (len - 4), ".hpp") != 0)
+		    && (len <= 3 || strcmp (arg + (len - 3), ".hp") != 0)
+		    && (len <= 4 || strcmp (arg + (len - 4), ".hxx") != 0)
+		    && (len <= 4 || strcmp (arg + (len - 4), ".h++") != 0)
+		    && (len <= 4 || strcmp (arg + (len - 4), ".HPP") != 0)
+		    && (len <= 4 || strcmp (arg + (len - 4), ".tcc") != 0)
+		    && (len <= 3 || strcmp (arg + (len - 3), ".hh") != 0))
+		  library = 1;
+	      }
+	  }
+	  break;
+	}
+    }
+
+  /* There's no point adding -shared-libgcc if we don't have a shared
+     libgcc.  */
+#ifndef ENABLE_SHARED_LIBGCC
+  shared_libgcc = 0;
+#endif
+
+  /* Add one for shared_libgcc or extra static library.  */
+  num_args = argc + added + need_math + (library > 0) * 4 + 1;
+  new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args);
+
+  i = 0;
+  j = 0;
+
+  /* Copy the 0th argument, i.e., the name of the program itself.  */
+  new_decoded_options[j++] = decoded_options[i++];
+
+  /* NOTE: We start at 1 now, not 0.  */
+  while (i < argc)
+    {
+      new_decoded_options[j] = decoded_options[i];
+
+      /* Make sure -lstdc++ is before the math library, since libstdc++
+	 itself uses those math routines.  */
+      if (!saw_math && (args[i] & MATHLIB) && library > 0)
+	{
+	  --j;
+	  saw_math = &decoded_options[i];
+	}
+
+      if (!saw_libc && (args[i] & WITHLIBC) && library > 0)
+	{
+	  --j;
+	  saw_libc = &decoded_options[i];
+	}
+
+      /* Wrap foo.[chi] files in a language specification to
+	 force the gcc compiler driver to run cc1plus on them.  */
+      if (args[i] & LANGSPEC)
+	{
+	  const char *arg = decoded_options[i].arg;
+	  int len = strlen (arg);
+	  switch (arg[len - 1])
+	    {
+	    case 'c':
+	      generate_option (OPT_x, "c++", 1, CL_DRIVER,
+			       &new_decoded_options[j++]);
+	      break;
+	    case 'i':
+	      generate_option (OPT_x, "c++-cpp-output", 1, CL_DRIVER,
+			       &new_decoded_options[j++]);
+	      break;
+	    case 'h':
+	      generate_option (OPT_x, "c++-header", 1, CL_DRIVER,
+			       &new_decoded_options[j++]);
+	      break;
+	    default:
+	      gcc_unreachable ();
+	    }
+	  new_decoded_options[j++] = decoded_options[i];
+	  generate_option (OPT_x, "none", 1, CL_DRIVER,
+			   &new_decoded_options[j]);
+	}
+
+      if ((args[i] & SKIPOPT) != 0)
+	--j;
+
+      i++;
+      j++;
+    }
+
+  /* Add `-lstdc++' if we haven't already done so.  */
+  if (library > 0)
+    {
+#ifdef HAVE_LD_STATIC_DYNAMIC
+      if (library > 1 && !static_link)
+	{
+	  generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER,
+			   &new_decoded_options[j]);
+	  j++;
+	}
+#endif
+      generate_option (OPT_l,
+		       saw_profile_flag ? LIBSTDCXX_PROFILE : LIBSTDCXX, 1,
+		       CL_DRIVER, &new_decoded_options[j]);
+      added_libraries++;
+      j++;
+      /* Add target-dependent static library, if necessary.  */
+      if ((static_link || library > 1) && LIBSTDCXX_STATIC != NULL)
+	{
+	  generate_option (OPT_l, LIBSTDCXX_STATIC, 1,
+			   CL_DRIVER, &new_decoded_options[j]);
+	  added_libraries++;
+	  j++;
+	}
+#ifdef HAVE_LD_STATIC_DYNAMIC
+      if (library > 1 && !static_link)
+	{
+	  generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER,
+			   &new_decoded_options[j]);
+	  j++;
+	}
+#endif
+    }
+  if (saw_math)
+    new_decoded_options[j++] = *saw_math;
+  else if (library > 0 && need_math)
+    {
+      generate_option (OPT_l,
+		       saw_profile_flag ? MATH_LIBRARY_PROFILE : MATH_LIBRARY,
+		       1, CL_DRIVER, &new_decoded_options[j]);
+      added_libraries++;
+      j++;
+    }
+  if (saw_libc)
+    new_decoded_options[j++] = *saw_libc;
+  if (shared_libgcc && !static_link)
+    generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
+		     &new_decoded_options[j++]);
+
+  *in_decoded_options_count = j;
+  *in_decoded_options = new_decoded_options;
+  *in_added_libraries = added_libraries;
+}
+
+/* Called before linking.  Returns 0 on success and -1 on failure.  */
+int lang_specific_pre_link (void)  /* Not used for C++.  */
+{
+  return 0;
+}
+
+/* Number of extra output files that lang_specific_pre_link may generate.  */
+int lang_specific_extra_outfiles = 0;  /* Not used for C++.  */