[bug #45949] MAKEFLAGS += -r has no effect for current Makefile

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?45949>

                 Summary: MAKEFLAGS += -r has no effect for current Makefile
                 Project: make
            Submitted by: None
            Submitted on: Sun 13 Sep 2015 07:45:04 AM UTC
                Severity: 3 - Normal
              Item Group: Documentation
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 4.1
        Operating System: POSIX-Based
           Fixed Release: None
           Triage Status: None

    _______________________________________________________

Details:

The 5.7.3 section of the documentation states that:

_The MAKEFLAGS variable can also be useful if you want to have certain
options, such as ‘-k’ (see Summary of Options), set each time you run
make. You simply put a value for MAKEFLAGS in your environment. You can also
set MAKEFLAGS in a makefile, to specify additional flags that should also be
in effect for that makefile._

This does not seams to be true, at least for the -r flag. Example makefile:


MAKEFLAGS += -r
foo.c:
    touch $@


Apparently, _MAKEFLAGS += -r_ does not force make to ignore all implicit rules
for the current makefile:


$ rm foo.* ; make foo.o
touch foo.c
cc    -c -o foo.o foo.c


While:


$ rm foo.* ; make -r foo.o
make: *** No rule to make target `foo.o'.  Stop.






    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?45949>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/