How to use install-data-local conditionally with automake-1.6.3

[Steffen DETTMER]

Hi,

I hope I don't ask a FAQ, but I didn't find the answer in the web
so I decided to ask here :)

If there is a complex installation thing `foo', like extracting
some archive:
  tar xzf $(srcdir)/$(requiredfiles) -C "$(DESTDIR)$(requiredfilesdir)"/FILES
and a conditional complex `feature', someone could write the
following invalid Makefile.am:

------------------------------------------------------------------->8=======
install-data-local: myinstbase

uninstall-local: myuninstbase

myinstbase:
        mkdir -p $(DESTDIR)$(prefix)
        touch $(DESTDIR)$(prefix)/foo
myuninstbase:
        rm -f $(DESTDIR)$(prefix)/foo
        -rmdir -p $(DESTDIR)$(prefix)

# these rules could be in some include `featureinst.mak':
if FEATURE
install-data-local: myinstfeature
uninstall-local: myuninstfeature
myinstfeature:
        mkdir -p $(DESTDIR)$(prefix)
        touch $(DESTDIR)$(prefix)/feature
myuninstfeature:
        rm -f $(DESTDIR)$(prefix)/feature
        -rmdir -p $(DESTDIR)$(prefix)
endif
=======8<-------------------------------------------------------------------

automake-1.6.3 tells:

------------------------------------------------------------------->8=======
test/Makefile.am:1: install-data-local defined both conditionally and 
unconditionally
test/Makefile.am:3: uninstall-local defined both conditionally and 
unconditionally
make: *** [Makefile.in] Error 1
=======8<-------------------------------------------------------------------

but it does create Makefile (BTW, isn't this a bug?) and it seems
to work correctly.

Could someone please tell why automake explicitely catches this
up and how to do this correctly?

Ideally myinstfeature would be defined in some feature.mak (to
allow to reuse it across several Makefile.am):

------------------------------------------------------------------->8=======
install-data-local: myinstbase

uninstall-local: myuninstbase

myinstbase:
        mkdir -p $(DESTDIR)$(prefix)
        touch $(DESTDIR)$(prefix)/foo
myuninstbase:
        rm -f $(DESTDIR)$(prefix)/foo
        -rmdir -p $(DESTDIR)$(prefix)

include feature.mak
if FEATURE
# enable by polling deps:
install-data-local: myinstfeature
uninstall-local: myuninstfeature
endif
=======8<-------------------------------------------------------------------


feature.mak:
------------------------------------------------------------------->8=======
myinstfeature:
        mkdir -p $(DESTDIR)$(prefix)
        touch $(DESTDIR)$(prefix)/feature
myuninstfeature:
        rm -f $(DESTDIR)$(prefix)/feature
        -rmdir -p $(DESTDIR)$(prefix)
=======8<-------------------------------------------------------------------

How to approach this correctly?

oki,

Steffen


 
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