This patch add the support for --debug=c and --debug=e to make

this option when activated will trace in stdout the activity of $(call and $(eval in the Makefile

The trace use the format:

 ### xxx -->

 ### xxx <--

the number of space before ### is at least 1 and increase with the nesting of eval/call

usage: make --debug=c,e

diff -r -u make-3.82/debug.h make-3.82-lo_trace/debug.h

--- make-3.82/debug.h	2010-07-12 20:20:38.000000000 -0500

+++ make-3.82-lo_trace/debug.h	2011-06-22 12:06:37.000000000 -0500

@@ -21,6 +21,8 @@

 #define DB_JOBS         (0x004)

 #define DB_IMPLICIT     (0x008)

 #define DB_MAKEFILES    (0x100)

+#define DB_CALL       (0x01000)

+#define DB_EVAL       (0x02000)

 #define DB_ALL          (0xfff)

diff -r -u make-3.82/function.c make-3.82-lo_trace/function.c

--- make-3.82/function.c	2011-06-23 01:01:35.000000000 -0500

+++ make-3.82-lo_trace/function.c	2011-06-23 01:40:05.000000000 -0500

@@ -28,6 +28,8 @@

 #include "amiga.h"

 #endif

+static int depth = 0;

+

 struct function_table_entry

   {

@@ -1371,7 +1373,12 @@

   install_variable_buffer (&buf, &len;;

+  depth += 1;

+  DBS( DB_EVAL, ("### eval -->\n"));

+  DB( DB_EVAL, ("%s\n", argv[0]));

   eval_buffer (argv[0]);

+  DBS( DB_EVAL, ("### eval <--\n"));

+  depth -= 1;

   restore_variable_buffer (buf, len);

@@ -2338,6 +2345,7 @@

   if (v == 0 || *v->value == '\0')

     return o;

+  depth += 1;

   body = alloca (flen + 4);

   body[0] = '$';

   body[1] = '(';

@@ -2345,6 +2353,7 @@

   body[flen+2] = ')';

   body[flen+3] = '\0';

+  DBS(DB_CALL, ("### call %s -->\n", body));

   /* Set up arguments $(1) .. $(N).  $(0) is the function name.  */

   push_new_variable_scope ();

@@ -2354,6 +2363,7 @@

       char num[11];

       sprintf (num, "%d", i);

+      DBS(DB_CALL, ("### arg %i for call %s is '%s'\n", i, body, *argv));

       define_variable (num, strlen (num), *argv, o_automatic, 0);

     }

@@ -2367,6 +2377,7 @@

       char num[11];

       sprintf (num, "%d", i);

+      DBS(DB_CALL, ("### arg %i for call %s is implicit\n", i, body));

       define_variable (num, strlen (num), "", o_automatic, 0);

     }

@@ -2377,7 +2388,14 @@

   saved_args = max_args;

   max_args = i;

+

   o = variable_expand_string (o, body, flen+3);

+  DBS(DB_CALL, ("### call to %s expended into\n", body));

+  DB(DB_CALL, ("%s\n", o));

+  DBS(DB_CALL, ("### call %s <--\n", body));

+

+  depth -= 1;

+

   max_args = saved_args;

   v->exp_count = 0;

diff -r -u make-3.82/main.c make-3.82-lo_trace/main.c

--- make-3.82/main.c	2010-07-19 02:10:53.000000000 -0500

+++ make-3.82-lo_trace/main.c	2011-06-22 11:46:39.000000000 -0500

@@ -634,6 +634,12 @@

             case 'b':

               db_level |= DB_BASIC;

               break;

+            case 'c':

+              db_level |= DB_CALL;

+              break;

+            case 'e':

+              db_level |= DB_EVAL;

+              break;

             case 'i':

               db_level |= DB_BASIC | DB_IMPLICIT;

               break;