_ := $(MAKEFILE_LIST)
d := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))

generate := $(generate) $d/interface_backend.go $d/func_handlerequest.go $d/util/struct_null_backend.go
secondary := $d/requests.txt

ifeq (,$(filter clean,$(MAKECMDGOALS)))
-include $d/enumerator-list.mk
endif

ifeq (1,$(words $_))

all: generate
.PHONY: all

generate: $(generate)
.PHONY: generate

clean:
	rm -f -- $(generate) $(secondary)
.PHONY: clean

.DELETE_ON_ERROR:
.SECONDARY:

endif

$d/requests.txt: $d/nslcd_h.go $d/Makefile
	< $< grep -Eo '\btype Request_([^_ ]+)(_\S+)?' | sed 's/^type Request_//' > $@

%.go: %.go.sh
	./$^ > $@

$d/interface_backend.go: $d/requests.txt
$d/func_handlerequest.go: $d/requests.txt
$d/util/struct_null_backend.go: $d/interface_backend.go