Re: MAKEFLAGS

[Oleksandr Gavenko]

On 2012-11-21, Warlich, Christof wrote:

> But with the following Makefile, the --include-dir or -I flags are ignored in 
> MAKEFLAGS (and in MFLAGS):
>
> $(info MAKEFLAGS=$(MAKEFLAGS))
> $(info MLAGS=$(MFLAGS))
> all: ;
>
> $ make --include-dir=/home -ks -I /
> MAKEFLAGS=sk
> MLAGS=-sk
>
> Is there any way to get access to the include path from within my Makefile?

I found that it update your example with:

  all: ; echo $(MAKEFLAGS)

it print '$(MAKEFLAGS)' from command:

  $ make -I subdir:

  MAKEFLAGS=sk sk
  MLAGS=-sk
  skI /home -I /

Also I develop such examples:

**Makefile**

  include test.mk
  all:
      echo hello "$(MAKEFLAGS)"
      $(MAKE) -C subproj

**subproj/Makefile**

  include test.mk
  all:
      echo hello again "$(MAKEFLAGS)"

**subdir/test.mk**

  $(info Found by $(MAKEFILE_LIST)!!)

See how it work:

  $ make -I subdir/

  Found by  Makefile subdir/test.mk!!
  echo hello "I subdir/"
  hello I subdir/
  make -C subproj
  make[1]: Entering directory `/home/user/devel/tmp/mk/subproj'
  Makefile:2: test.mk: No such file or directory
  make[1]: *** No rule to make target `test.mk'.  Stop.
  make[1]: Leaving directory `/home/user/devel/tmp/mk/subproj'
  make: *** [all] Error 2

But if I call with *full* path all OK:

  $ make -I $PWD/subdir/

  Found by  Makefile /home/user/devel/tmp/mk/subdir/test.mk!!
  echo hello "I /home/user/devel/tmp/mk/subdir/"
  hello I /home/user/devel/tmp/mk/subdir/
  make -C subproj
  Found by  Makefile /home/user/devel/tmp/mk/subdir/test.mk!!
  make[1]: Entering directory `/home/user/devel/tmp/mk/subproj'
  echo hello again "wI /home/user/devel/tmp/mk/subdir/"
  hello again wI /home/user/devel/tmp/mk/subdir/
  make[1]: Leaving directory `/home/user/devel/tmp/mk/subproj'

I recommend implement own inclusion mechanics:

**Makefile**

  dirs := a  b/c  non-existent
  MK_DIRS := $(foreach dir,$(dirs),$(realpath $(dir)))
  $(info $(MK_DIRS))

  files := a.mk c.mk
  MK_FILES := $(foreach file,$(files),$(foreach dir,$(dirs),$(wildcard 
$(dir)/$(file))))
  $(info $(MK_FILES))

  include $(MK_FILES)

**a/a.mk**

  $(info "$(lastword $(MAKEFILE_LIST))" was included)

**b/c/c.mk**

  $(info "$(lastword $(MAKEFILE_LIST))" was included)

Full working example clone at:

  https://sourceforge.net/u/gavenkoa/exp/ci/tip/tree/make/include-dirs/

If you run:

  $ make

  /home/user/devel/my-devel/exp/make/include-dirs/a 
/home/user/devel/my-devel/exp/make/include-dirs/b/c
  a/a.mk    b/c/c.mk
  "a/a.mk" was included
  "b/c/c.mk" was included
  make: *** No targets.  Stop.

Hope this help to you. Any suggestion welcome to help-make...

-- 
Best regards!