
.PHONY: all install clean compiler_name

version=1.9
prefix := /usr/local
libdir := $(prefix)/lib
localstatedir := $(prefix)/lib

mylibdir := $(libdir)/haskell-utils

COMPILER := $(firstword $(shell bash -c "type -p ghc6 ghc hugs"))
COMPILER_NAME := $(notdir $(COMPILER))

GHC_FLAGS := -O -Wall -Werror
GHC_FLAGS += -package regex-base -package regex-posix -package Cabal

USER_PROGRAMS=update-haskell-control update-debian-haskell-files
SYSTEM_PROGRAMS=haskell-utils
PROGRAMS=$(USER_PROGRAMS) $(SYSTEM_PROGRAMS)
SOURCES=$(addsuffix .lhs,$(PROGRAMS))
MANPAGES=$(addsuffix .1,$(USER_PROGRAMS)) $(addsuffix .8,$(SYSTEM_PROGRAMS))

SCRIPT_VERSION=$(shell cd scripts && ls -1 | sort -rn | head -n 1 )

all: $(PROGRAMS) $(MANPAGES)

$(PROGRAMS): %: %.lhs
ifeq "$(COMPILER_NAME)" "hugs"
	(echo "#!/usr/bin/runhugs +l"; cat $<) > $@
	chmod +x $@
else
	$(COMPILER) $(GHC_FLAGS) $< -o $@
endif

$(SOURCES) $(MANPAGES): %: %.in
	sed -e "s@^#line.*@@" \
	    -e "s#@version@#$(version)#g" \
	    -e "s#@libdir@#$(libdir)#g" \
	    -e "s#@localstatedir@#$(localstatedir)#g" \
	 < $< > $@

install: $(PROGRAMS)
	install -d $(prefix)/sbin/
	install -d $(prefix)/bin/
	install -m 755 $(USER_PROGRAMS)   $(prefix)/bin/
	install -m 755 $(SYSTEM_PROGRAMS) $(prefix)/sbin/
	install -d $(mylibdir)/
	install -d $(localstatedir)/haskell-utils/
	install -d $(mylibdir)/varfiles/
	install -m 644 haskell-utils-common_varfile $(mylibdir)/varfiles/
	install -d $(mylibdir)/scripts
	set -e; for i in scripts/*; do install -d $(mylibdir)/$$i; done
	set -e; for i in scripts/*/*; do install -m 755 $$i $(mylibdir)/$$i; done
	ln -s $(SCRIPT_VERSION) $(mylibdir)/scripts/current

clean:
	rm -f *.o *.hi $(PROGRAMS) $(MANPAGES) $(SOURCES)

compiler_name:
	@echo $(COMPILER_NAME)

