Re: .INCLUDE_DIRS question

[Philip Guenther]

On 5/4/06, Martin d'Anjou <address@hidden> wrote:
...
> $(shell mkdir -p m && echo VAR=Hello > m/m.mk)
> .INCLUDE_DIRS=m
> include m.mk
> all:
>         echo $(VAR)
>
> % make
> Makefile:4: m.mk: No such file or directory
> make: *** No rule to make target `m.mk'.  Stop.

The .INCLUDE_DIRS variable only permits inspection of the list of
directories, not alteration of it.  To alter the list of directories
use the -I or --include-dir option on the command line.

(While section 5.7.3 of the info pages seem to imply that setting the
MAKEFLAGS variable in a Makefile should cause the listed option to be
parsed immediately, it appears that it really is restricted to
affecting recursive invocations of make.  So, there's no way for a
Makefile to modify the include path used in its own parsing except by
recursively invoking itself.)


Philip Guenther