[lug] How do you setup a recursive make?

[Brad Doctor]

It is done within Make, but with some shell calls.  I've included the full 
example, with it's expected output.  Also, should you add a sub component 
to your tree, you can use the same method as used here, so it will also 
recurse.

For this, you need sed as a system utility (Uwin, Cygwin, etc.) and 
possibly echo -- not sure how it will behave on windows.  Of course, you 
need 'test', or have it as a builtin for your shell.  Now that I think 
about it, this is pretty Unixish, however it should be adaptable.

SUBDIRS = lib server client docs

METHODS = all clean

   default-recursive:
         @set fnord $(MAKEFLAGS); amf=$$2; \
         dot_seen=no; \
         target=`echo $@ | sed s/-recursive//`; \
         list='$(SUBDIRS)'; for subdir in $$list; do \
           echo "Making $$target in $$subdir"; \
           if test "$$subdir" = "."; then \
             dot_seen=yes; \
             local_target="$$target-am"; \
           else \
             local_target="$$target"; \
           fi; \
           (cd $$subdir && $(MAKE) $(LOC_MAKEFLAGS) $$local_target) \
            || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; 
esac; \
         done; \

    test:
         @set fnord $(MAKEFILAGS); \
         mylist='$(METHODS)'; for method in $$mylist; do \
           echo "Making $$method"; \
           touch $$method; \
         done;

---------

make
---------
Making default in lib
make[1]: Entering directory `/export/home/bdoctor/t/lib'
make[1]: `default' is up to date.
make[1]: Leaving directory `/export/home/bdoctor/t/lib'
Making default in server
make[1]: Entering directory `/export/home/bdoctor/t/server'
make[1]: `default' is up to date.
make[1]: Leaving directory `/export/home/bdoctor/t/server'
Making default in client
make[1]: Entering directory `/export/home/bdoctor/t/client'
make[1]: `default' is up to date.
make[1]: Leaving directory `/export/home/bdoctor/t/client'
Making default in docs
make[1]: Entering directory `/export/home/bdoctor/t/docs'
make[1]: Nothing to be done for `default'.
make[1]: Leaving directory `/export/home/bdoctor/t/docs'
---------
make test
---------
Making all
Making clean
---------

-brad

At 04:29 PM 7/23/2001 -0600, Holshouser, David wrote:
>is make sending this scripting to the shell or is it handled within make?
>is this sh syntax specific?
>where do I look for info on for loops?
>
>FYI, using gcc make from Tornado2 on an NT box, so if this is passed through
>to the shell, I'm in trouble.