[bug #18622] regression cannot turn off implicit rules for %.c and %.tex in 3.81

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?18622>

                 Summary: regression cannot turn off implicit rules for %.c
and %.tex in 3.81
                 Project: make
            Submitted by: None
            Submitted on: Thursday 12/28/2006 at 22:26 UTC
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 3.81
        Operating System: Any
           Fixed Release: None

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Details:

makefile
--start--
all: fred

fred: foo

foo:
        touch fred

#goal to get equivalent of gmake --no-builtin-rules functionality
.SUFFIXES:
#shutoff  implicit rules
(%): %
%.out: %
%:: %,v
%:: RCS/%,v
%:: RCS/%
%:: s.%
%:: SCCS/s.%
%.c: %.w %.ch
%.tex: %.w %.ch
--end makefile--

repro steps:
gmake -p -f makefile.9 > file
in verbose output find section (about line 862)
that starts with # Implicit rules
defect is that the implicit rules for CTANGLE and CWEAVE are not disabled
using gmake 3.81

output from gmake 3.81
...
 
# Implicit Rules

(%): %

%.out: %

%:: %,v

%:: RCS/%,v

%:: RCS/%

%:: s.%

%:: SCCS/s.%

%.c: %.w %.ch

%.tex: %.w %.ch

%.c: %.w %.ch
#  commands to execute (built-in):
        $(CTANGLE) $^ $@

%.tex: %.w %.ch 
#  commands to execute (built-in):
        $(CWEAVE) $^ $@

# 11 implicit rules, 5 (45.5%) terminal.


--end output --
correct out from gmake 3.80
...
# Implicit Rules

(%): %

%.out: %

%:: %,v

%:: RCS/%,v

%:: RCS/%

%:: s.%

%:: SCCS/s.%

%.c: %.w %.ch

%.tex: %.w %.ch

# 9 implicit rules, 5 (55.6%) terminal.
--end 3.80 output--
gmake -v output
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

This program built for x86_64-unknown-linux-gnu

for additional information contact address@hidden



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File Attachments:


-------------------------------------------------------
Date: Thursday 12/28/2006 at 22:26 UTC  Name: makefile.9  Size: 241B   By:
None
makefile.9 is attached 
<http://savannah.gnu.org/bugs/download.php?file_id=11619>

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