cppfiles.c (_cpp_read_file): Add to dependencies if requested.

* cppfiles.c (_cpp_read_file): Add to dependencies if requested.
	* cppinit.c (cpp_start_read): Remove deps_add_dep call.
	* tradcpp.c (main): Add -imacros or -include'd dependencies
	for -M*.
	* cpp.texi (-M, -MM): Document -M -include behaviour.

From-SVN: r39240

gcc/ChangeLog

@@ -1,3 +1,11 @@
+2001-01-24  Jakub Jelinek  <jakub@redhat.com>
+
+	* cppfiles.c (_cpp_read_file): Add to dependencies if requested.
+	* cppinit.c (cpp_start_read): Remove deps_add_dep call.
+	* tradcpp.c (main): Add -imacros or -include'd dependencies
+	for -M*.
+	* cpp.texi (-M, -MM): Document -M -include behaviour.
+
 2001-01-24  Roger Collins <roger@ProProject.com>
 	  
         * config/i386/xm-i386.h: Make __i386__ a boolean macro.

gcc/cpp.texi

@@ -3453,14 +3453,16 @@ Instead of outputting the result of preprocessing, output a rule
 suitable for @code{make} describing the dependencies of the main source
 file.  The preprocessor outputs one @code{make} rule containing the
 object file name for that source file, a colon, and the names of all the
-included files.  If there are many included files then the rule is split
+included files, including those coming from @samp{-include} or
-into several lines using @samp{\}-newline.
+@samp{-imacros} command line options.  If there are many included files
+then the rule is split into several lines using @samp{\}-newline.
 
 @item -MM
 @findex -MM
 Like @samp{-M}, but mention only the files included with @samp{#include
-"@var{file}"}.  System header files included with @samp{#include
+"@var{file}"} or with @samp{-include} or @samp{-imacros} command line
-<@var{file}>} are omitted.
+options.  System header files included with @samp{#include <@var{file}>}
+are omitted.
 
 @item -MF @var{file}
 @findex -MF

gcc/cppfiles.c

@@ -765,6 +765,9 @@ _cpp_read_file (pfile, fname)
       return 0;
     }
 
+  if (CPP_OPTION (pfile, print_deps))
+    deps_add_dep (pfile->deps, f->name);
+
   stack_include_file (pfile, f);
   return 1;
 }

gcc/cppinit.c

@@ -911,13 +911,8 @@ cpp_start_read (pfile, fname)
     CPP_OPTION (pfile, out_fname) = "";
 
   if (CPP_OPTION (pfile, print_deps))
-    {
+    /* Set the default target (if there is none already).  */
-      /* Set the default target (if there is none already), and
+    deps_add_default_target (pfile->deps, CPP_OPTION (pfile, in_fname));
-	 the dependency on the main file.  */
-      deps_add_default_target (pfile->deps, CPP_OPTION (pfile, in_fname));
-
-      deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
-    }
 
   /* Open the main input file.  This must be done early, so we have a
      buffer to stand on.  */

gcc/tradcpp.c

@@ -848,6 +848,11 @@ main (argc, argv)
 	    perror_with_name (pend[i].arg);
 	    return FATAL_EXIT_CODE;
 	  }
+
+	/* For -M, add this file to the dependencies.  */
+	if (print_deps)
+	  deps_add_dep (deps, pend[i].arg);
+
 	finclude (fd, pend[i].arg, &outbuf);
       }
   indepth--;