Add --without-$subsystem support in toplevel configure/Makefile

Hi guys,

the patch in attachment allows to disable the build/install targets for each specific subsystem in the tree.

thanks also to Joel Becker for a bunch of filter-out hints.

Please apply or ACK and I will apply.
Fabio

I'm going to make him an offer he can't refuse.
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I'd like to see $USERLAND and $SUBDIRS made one variable. You
shouldn't need individual targets for each binary, etc. But perhaps that's a later pass.

Joel

"Gone to plant a weeping willow
 On the bank's green edge it will roll, roll, roll.
 Sing a lulaby beside the waters.
 Lovers come and go, the river roll, roll, rolls."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127

This can be done.

I keep them separated because I can express dependencies (not all subsystems need all subsystems) and it let make -j work (something that was not working with the old style makefiles).

Fabio

I'm going to make him an offer he can't refuse.

Try this. The only tricky part is the patsubst converting cman-lib to cman/lib.

USERLAND = cman-lib ccs cman dlm group fence gfs gfs2 gnbd rgmanager
all: $(USERLAND)

$(USERLAND):

	[ -n "${without_$@}" || ${MAKE} -C $(patsubst -,/,$@) all

cman-lib:
ccs: cman-lib
cman: ccs
dlm:
group: ccs dlm
fence: group dlm
gfs:
gfs2:
gnbd: cman-lib
rgmanager: ccs dlm

Life's Little Instruction Book #30

	"Never buy a house without a fireplace."

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127