#  $HeadURL$ $LastChangedRevision$

#  Functions
define check_var_logical
ifeq ($$(origin $(1)),undefined)
    $$(error $(1): not set)
else ifeq ($$($(1)),false)
else ifeq ($$($(1)),true)
else
    $$(error $$($(1)): invalid value for $(1))
endif
endef

#  $(foreach ...) outputs its list separated by spaces, as normal. The problem
#  with this is that even if I embed $(NEWLINE) after each string, there is of
#  course still a space after the newline. If I then change the newline+space
#  for a newline, then that just leaves one undesired trailing newline at the
#  end that results in a double empty line, but we can change that as well.
#  To make things clearer, I don't put a newline in with the $(foreach ...),
#  instead I put in the *text* 'NEWLINE_PLACEHOLDER', and then substitute that
#  out as described.
define NEWLINE


endef
define check_var_against_list
ifeq ($$(origin $(1)),undefined)
    $$(error $(1): not set)
$(subst NEWLINE_PLACEHOLDER,,$(subst NEWLINE_PLACEHOLDER ,$(NEWLINE),$(foreach POSSIBLE_VAL,$(2),else ifeq '$$($(1))' '$(POSSIBLE_VAL)'NEWLINE_PLACEHOLDER)))
else
    $$(error $$($(1)): invalid value for $(1))
endif
endef

define check_var_set
ifeq ($$(origin $(1)),undefined)
    $$(error $(1): not set)
endif
endef

#  Variables
SHELL = /bin/bash
$(eval $(call check_var_set,SITE_CONFIG_DIR))
$(eval $(call check_var_set,PCMS_SHARE_PREFIX))
$(eval $(call check_var_set,PCMS_STATE_PREFIX))
OSID = $(shell lsb_release -i -r -s | tr -d '\n' | tr '[A-Z]' '[a-z]')
ifndef HOSTNAME
    HOSTNAME = $(shell uname -n)
endif

#  Make makes facilities; facilities require files and files require methods. 
#  Therefore this one rule (which is also first and therefore default) should
#  be enough.
ifeq ($(PCMS_PASS_NUM),3)
all.facility: 

clean.facility: 

else ifeq ($(PCMS_PASS_NUM),2)
all.facility: 

clean.facility: 

else ifeq ($(PCMS_PASS_NUM),1)
all.facility: 

clean.facility: 

else ifeq ($(PCMS_PASS_NUM),0)
all.facility:
	touch $@

clean.facility:
	$(RM) *.facility
endif

#  A recipe that deliberately does not create its target, thus ensuring
#  that anything that depends on it will have its recipe run.
force-execution-each-time:

#  Includes
include $(PCMS_STATE_PREFIX)/makefiles/facility-local.mk
#  Take the list of module- and config-module- provided facilities, strip their
#  leading directories and include them. Note that:
#  1) we strip the leading directories so that the include directory will load
#     then from the first-mentioned '-I' directory (which puts config-module
#     ahead of module)
#  2) we don't bother deduplicating the list because all files should have
#     reinclusion protection.
include $(notdir $(wildcard $(SITE_CONFIG_DIR)/makefiles/facilities/facility-*.mk $(PCMS_SHARE_PREFIX)/makefiles/facilities/facility-*.mk))

.SUFFIXES: