[bug #29885] MAKEFLAGS doen't pass commandline varaibles to sub-make

[Bill Cox]

URL:
  <http://savannah.gnu.org/bugs/?29885>

                 Summary: MAKEFLAGS doen't pass commandline varaibles to
sub-make
                 Project: make
            Submitted by: llib_xoc
            Submitted on: Fri 14 May 2010 09:28:40 PM GMT
                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: POSIX-Based
           Fixed Release: None
           Triage Status: None

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Details:

The documentation says:

The special variable MAKEFLAGS is always exported (unless you unexport it).
MAKEFILES is exported if you set it to anything.

make automatically passes down variable values that were defined on the
command line, by putting them in the MAKEFLAGS variable. See
Options/Recursion. 

Here's what I see with 3.81 on Linux,

bash-3.2$ make CPU=gcc -f makefile -b DEBUG=1 clean
make DEBUG=1 CPU=gcc -f makefile_aacmch_dec_lib clean
make[1]: Entering directory
`/fac/vol6/software/bcox/audio3/hf2/tie/aac/CTEnhancedAACMultiChannelDecoder/build'
makefile_aacmch_dec_lib:23: MAKE_RESTARTS=
makefile_aacmch_dec_lib:24: MAKE_VERSION=3.81
makefile_aacmch_dec_lib:25: MAKECMDGOALS=clean
makefile_aacmch_dec_lib:26: MAKEFILE_LIST= makefile_aacmch_dec_lib
makefile_aacmch_dec_lib:27: MAKEFILES=
makefile_aacmch_dec_lib:28: MAKEFLAGS=w
makefile_aacmch_dec_lib:29: MAKEINFO=makeinfo
makefile_aacmch_dec_lib:30: MAKELEVEL=1
makefile_aacmch_dec_lib:31: MAKEOVERRIDES=CPU=gcc DEBUG=1
makefile_aacmch_dec_lib:32: MAKESHELL=

The above $(warning)s are the first non-comment lines in
makefile_aacmch_dec_lib.  As you can see from the attached makefile, I not
unexport'ed MAKEFLAGS.

I remember the behavior used to work just as documented.  Am I missing
something?




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