From fb6410f43583a9e0b457d675e1bc2d1ed5ba279b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@kolpackov.net>
Date: Tue, 28 Sep 2004 18:13:55 +0000
Subject: Implemented dontcare flag inheritance when rebuilding makefiles.

---
 ChangeLog                      |  5 +++++
 remake.c                       | 31 +++++++++++++++++++++++++++++++
 tests/ChangeLog                |  5 +++++
 tests/scripts/features/include | 12 +++++++++++-
 4 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 7ad0ab8..53fa8df 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-28  Boris Kolpackov  <boris@kolpackov.net>
+
+	* remake.c (update_file_1): When rebuilding makefiles inherit
+	dontcare flag from a target that triggered update.
+
 2004-09-27  Boris Kolpackov  <boris@kolpackov.net>
 
 	* variable.c (initialize_file_variables): Mark pattern-specific
diff --git a/remake.c b/remake.c
index b0c76dc..70acad3 100644
--- a/remake.c
+++ b/remake.c
@@ -468,6 +468,7 @@ update_file_1 (struct file *file, unsigned int depth)
     {
       FILE_TIMESTAMP mtime;
       int maybe_make;
+      int dontcare = 0;
 
       check_renamed (d->file);
 
@@ -491,7 +492,21 @@ update_file_1 (struct file *file, unsigned int depth)
 
       d->file->parent = file;
       maybe_make = must_make;
+
+      /* Inherit dontcare flag from our parent. */
+      if (rebuilding_makefiles)
+        {
+          dontcare = d->file->dontcare;
+          d->file->dontcare = file->dontcare;
+        }
+
+
       dep_status |= check_dep (d->file, depth, this_mtime, &maybe_make);
+
+      /* Restore original dontcare flag. */
+      if (rebuilding_makefiles)
+        d->file->dontcare = dontcare;
+
       if (! d->ignore_mtime)
         must_make = maybe_make;
 
@@ -528,10 +543,26 @@ update_file_1 (struct file *file, unsigned int depth)
       for (d = file->deps; d != 0; d = d->next)
 	if (d->file->intermediate)
 	  {
+            int dontcare = 0;
+
 	    FILE_TIMESTAMP mtime = file_mtime (d->file);
 	    check_renamed (d->file);
 	    d->file->parent = file;
+
+            /* Inherit dontcare flag from our parent. */
+            if (rebuilding_makefiles)
+              {
+                dontcare = d->file->dontcare;
+                d->file->dontcare = file->dontcare;
+              }
+
+
 	    dep_status |= update_file (d->file, depth);
+
+            /* Restore original dontcare flag. */
+            if (rebuilding_makefiles)
+              d->file->dontcare = dontcare;
+
 	    check_renamed (d->file);
 
 	    {
diff --git a/tests/ChangeLog b/tests/ChangeLog
index 8420705..87c64d5 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-28  Boris Kolpackov  <boris@kolpackov.net>
+
+	* scripts/features/include: Test dontcare flag inheritance
+	when rebuilding makefiles.
+
 2004-09-27  Boris Kolpackov  <boris@kolpackov.net>
 
 	* scripts/features/patspecific_vars: Test exported variables.
diff --git a/tests/scripts/features/include b/tests/scripts/features/include
index 5f20ad8..f48cbd3 100644
--- a/tests/scripts/features/include
+++ b/tests/scripts/features/include
@@ -16,7 +16,7 @@ open(MAKEFILE,"> $makefile");
 
 print MAKEFILE <<EOF;
 \#Extra space at the end of the following file name
-include $makefile2                  
+include $makefile2
 all: ; \@echo There should be no errors for this makefile.
 
 -include nonexistent.mk
@@ -78,5 +78,15 @@ hello: ; @echo hello
    "hello\n"
   );
 
+# Test inheritance of dontcare flag when rebuilding makefiles.
+#
+run_make_test('
+.PHONY: all
+all: ; @:
+
+-include foo
+
+foo: bar; @:
+', '', '');
 
 1;
-- 
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