protoize.c: Conditionally include unistd.h.

2000-01-06  Mumit Khan  <khan@xraylith.wisc.edu>

	* protoize.c: Conditionally include unistd.h.
	(IS_SAME_PATH_CHAR): New macro.
	(IS_SAME_PATH): New macro.
	(CPLUS_FILE_SUFFIX): New macro.
	(cplus_suffix): New static variable.
	(is_abspath): New static function.
	(in_system_include_dir): Handle DOS style pathnames.
	(file_could_be_converted): Likewise.
	(file_normally_convertible): Likewise.
	(directory_specified_p): Likewise.
	(file_excluded_p): Likewise.
	(abspath): Likewise.
	(shortpath): Likewise.
	(referenced_file_is_newer): Likewise.
	(save_def_or_dec): Likewise.
	(do_processing): Likewise.
	(main): Likewise.
	(edit_file): Likewise. Use rename instead of link.
	(rename_c_file): Likewise. Don't rename syscalls file.
	(munge_compile_params): Define null device for DOS based systems.
	(process_aux_info_file): Use binary mode if appliable.
	(edit_file): Likewise.
	* invoke.texi (Running Protoize): Document C++ suffixes used.

From-SVN: r31265

gcc/ChangeLog

 2000-01-06  Mumit Khan  <khan@xraylith.wisc.edu>
 
+	* protoize.c: Conditionally include unistd.h.
+	(IS_SAME_PATH_CHAR): New macro.
+	(IS_SAME_PATH): New macro.
+	(CPLUS_FILE_SUFFIX): New macro.
+	(cplus_suffix): New static variable.
+	(is_abspath): New static function.
+	(in_system_include_dir): Handle DOS style pathnames.
+	(file_could_be_converted): Likewise.
+	(file_normally_convertible): Likewise.
+	(directory_specified_p): Likewise.
+	(file_excluded_p): Likewise.
+	(abspath): Likewise.
+	(shortpath): Likewise.
+	(referenced_file_is_newer): Likewise.
+	(save_def_or_dec): Likewise.
+	(do_processing): Likewise.
+	(main): Likewise.
+	(edit_file): Likewise. Use rename instead of link.
+	(rename_c_file): Likewise. Don't rename syscalls file.
+	(munge_compile_params): Define null device for DOS based systems.
+	(process_aux_info_file): Use binary mode if appliable.
+	(edit_file): Likewise.
+	* invoke.texi (Running Protoize): Document C++ suffixes used. 
+  
 	* cccp.c: Delete PATH_SEPARATOR, DIR_SEPARATOR and
 	IS_DIR_SEPARATOR macros.
 	* collect2.c: Likewise.

gcc/invoke.texi

@@ -7429,9 +7429,9 @@ would produce the wrong kind of output.  These include @samp{-g},
 the @var{compilation-options}, they are ignored.
 
 @item -C
-Rename files to end in @samp{.C} instead of @samp{.c}.
-This is convenient if you are converting a C program to C++.
-This option applies only to @code{protoize}.
+Rename files to end in @samp{.C}, or @samp{.cc} for DOS-based file
+systems, instead of @samp{.c}.  This is convenient if you are converting 
+a C program to C++.  This option applies only to @code{protoize}.
 
 @item -g
 Add explicit global declarations.  This means inserting explicit