configure.ac: Skip C if explicitly selected.

toplevel/
	* configure.ac: Skip C if explicitly selected.
	* configure: Regenerate.

gcc/
	* configure.ac: Remove special gtfiles case for C.
	* configure: Regenerate.
	* Makefile.in: Remove C front-end hooks and build hooks that
	will be picked up from c/Make-lang.in now.
	Add tree-mudflap to C_COMMON_OBJS.
	* gengtype.c (files_rules): Adjust gt-files for c/c-decl.c.
	* config/vms/vms.c: Look for c-tree.h in c/.
	* doc/gty.texi: Remove reference to c-config-lang.in.
	* doc/sourcebuild.texi: Document the c/ subdirectory.

c/
	* Make-lang.in: New file, rules migrated from gcc/Makefile.in
	and add language Makefile hooks.
	* config-lang.in: New file.
	* c-config-lang.in: Moved from gcc/config-lang.in to here, and
	add the required "normal" config-lang.in rules.
	* c-lang.h: Moved from gcc/ to here.
	* c-tree.h: Likewise.
	* c-objc-common.c: Likewise.
	* c-objc-common.h: Likewise.
	* c-typeck.c: Likewise.
	* c-convert.c: Likewise.
	* c-lang.c: Likewise.
	* c-aux-info.c: Likewise.
	* c-errors.c: Likewise.
	* gccspec.c: Likewise.
	* c-decl.c: Likewise.  Include gt-c-c-decl.h, not gt-c-decl.h.
	* c-parser.c: Likewise.  Include gt-c-c-parser.h, not gt-c-parser.h.

c-family/
	* cppspec.c: Moved from gcc/ to here.

objc/
	* Make-ang.in: Adjust for move of C front-end files.
	* config-lang.in: Likewise.
	* objc-encoding.c: Look for cp-tree.h in cp/, and for c-tree.h
	and c-lang.h in c/.
	* objc-runtime-shared-support.c: Likewise.
	* objc-next-runtime-abi-01.c: Likewise.
	* objc-next-runtime-abi-02.c: Likewise.
	* objc-gnu-runtime-abi-01.c: Likewise.
	* objc-act.c: Likewise.
	* objc-lang.c: Likewise.

cp/
	* Make-lang.in: Remove tree-mudflap.o from CXX_AND_OBJCXX_OBJS.

From-SVN: r189080

1 files changed, 108 insertions, 0 deletions

diff --git a/gcc/c/gccspec.c b/gcc/c/gccspec.c
new file mode 100644
index 0000000..e161359
--- /dev/null
+++ b/gcc/c/gccspec.c
@@ -0,0 +1,108 @@
+/* Specific flags and argument handling of the C front-end.
+   Copyright (C) 1999, 2001, 2003, 2007, 2010 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"
+
+/* Filter command line before processing by the gcc driver proper.  */
+void
+lang_specific_driver (struct cl_decoded_option **in_decoded_options ATTRIBUTE_UNUSED,
+		      unsigned int *in_decoded_options_count ATTRIBUTE_UNUSED,
+		      int *in_added_libraries ATTRIBUTE_UNUSED)
+{
+  /* Systems which use the NeXT runtime by default should arrange
+     for the shared libgcc to be used when -fgnu-runtime is passed
+     through specs.  */
+#if defined(ENABLE_SHARED_LIBGCC) && ! NEXT_OBJC_RUNTIME
+  unsigned int i;
+
+  /* The new argument list will be contained in this.  */
+  struct cl_decoded_option *new_decoded_options;
+
+  /* True if we should add -shared-libgcc to the command-line.  */
+  int shared_libgcc = 0;
+
+  /* The total number of arguments with the new stuff.  */
+  unsigned int argc;
+
+  /* The argument list.  */
+  struct cl_decoded_option *decoded_options;
+
+  argc = *in_decoded_options_count;
+  decoded_options = *in_decoded_options;
+
+  for (i = 1; i < argc; i++)
+    {
+      switch (decoded_options[i].opt_index)
+	{
+	case OPT_static_libgcc:
+	case OPT_static:
+	  return;
+
+	case OPT_SPECIAL_input_file:
+	  {
+	    const char *file = decoded_options[i].arg;
+	    int len;
+
+	    /* If the filename ends in .m or .mi, we are compiling
+	       ObjC and want to pass -shared-libgcc.  */
+	    len = strlen (file);
+	    if ((len > 2 && file[len - 2] == '.' && file[len - 1] == 'm')
+		||  (len > 3 && file[len - 3] == '.' && file[len - 2] == 'm'
+		     && file[len - 1] == 'i'))
+	      shared_libgcc = 1;
+	  }
+	  break;
+	}
+    }
+
+  if  (shared_libgcc)
+    {
+      new_decoded_options = XNEWVEC (struct cl_decoded_option, argc + 1);
+
+      i = 0;
+      do
+	{
+	  new_decoded_options[i] = decoded_options[i];
+	  i++;
+	}
+      while (i < argc);
+
+      generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
+		       &new_decoded_options[i++]);
+
+      *in_decoded_options_count = i;
+      *in_decoded_options = new_decoded_options;
+    }
+#endif
+}
+
+/* Called before linking.  Returns 0 on success and -1 on failure.  */
+int
+lang_specific_pre_link (void)
+{
+  return 0;  /* Not used for C.  */
+}
+
+/* Number of extra output files that lang_specific_pre_link may generate.  */
+int lang_specific_extra_outfiles = 0;  /* Not used for C.  */