%% Laird Kevin-QKL001 <[EMAIL PROTECTED]> writes:
lk> It is desirable to turn off the use of built-in implicit rules
lk> when running make. I have been successful in doing this via
lk> command line option '-r' or with a MAKEFLAGS environment variable
lk> set to '-r'. However, I would like to simply use the makefile. I
lk> have put a MAKEFLAGS variable in my makefile and I can see that it
lk> works for the '-n' option. However, it does nothing when I use the
lk> '-r' option instead.
Correct. It would be nice if this worked, but it doesn't. There are
some issues with the startup sequence of GNU make which make this a bit
difficult to manage, although it could certainly be done.
lk> What's the proper syntax, or what is the best way to disable the
lk> built-in implicit rules from within the makefile, preferably
lk> within employing a sub-make?
I usually do the following: first, use:
.SUFFIXES:
to disable all the suffix rules; that will actually get most of them.
Then, for pattern rules that aren't disabled, you can turn them off
explicitly. Use "make -p" to get a complete listing of all the rules
make knows about, to know which ones to disable. I typically get rid of
the RCS and SCCS builtins and leave it at that.
--
-------------------------------------------------------------------------------
Paul D. Smith <[EMAIL PROTECTED]> Find some GNU make tips at:
http://www.gnu.org http://www.paulandlesley.org/gmake/
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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