VERSION_STRING = 0.47

TARGETS	= cyclictest signaltest classic_pi pi_stress hwlatdetect
FLAGS	= -Wall -Wno-nonnull -O2
LIBS 	= -lpthread -lrt
DESTDIR	?=
prefix  ?= /usr/local
bindir  ?= $(prefix)/bin
mandir	?= $(prefix)/share/man/man8

all: $(TARGETS)

cyclictest: src/cyclictest/cyclictest.c
	$(CC) $(FLAGS) -D VERSION_STRING=$(VERSION_STRING) $^ -o $@ $(LIBS)

signaltest: src/signaltest/signaltest.c
	$(CC) $(FLAGS) -D VERSION_STRING=$(VERSION_STRING) $^ -o $@ $(LIBS)

classic_pi: src/pi_tests/classic_pi.c
	$(CC) $(FLAGS) -D_GNU_SOURCE -D VERSION_STRING=\"$(VERSION_STRING)\" $^ -o $@ $(LIBS)

pi_stress:  src/pi_tests/pi_stress.c
	$(CC) $(FLAGS) -D_GNU_SOURCE -D VERSION_STRING=\"$(VERSION_STRING)\" $^ -o $@ $(LIBS)

hwlatdetect:  src/hwlatdetect/hwlatdetect.py
	chmod +x src/hwlatdetect/hwlatdetect.py
	ln -s src/hwlatdetect/hwlatdetect.py hwlatdetect

CLEANUP  = $(TARGETS) *.o .depend *.*~ *.orig *.rej rt-tests.spec
CLEANUP += $(if $(wildcard .git), ChangeLog)

clean:
	for F in $(CLEANUP); do find -type f -name $$F | xargs rm -f; done
	rm -f hwlatdetect

distclean: clean
	rm -rf BUILD RPMS SRPMS releases *.tar.gz rt-tests.spec

changelog:
	git log >ChangeLog

install: all
	mkdir -p "$(DESTDIR)$(bindir)" "$(DESTDIR)$(mandir)"
	cp $(TARGETS) "$(DESTDIR)$(bindir)"
	gzip src/cyclictest/cyclictest.8 -c >"$(DESTDIR)$(mandir)/cyclictest.8.gz"
	gzip src/pi_tests/pi_stress.8 -c >"$(DESTDIR)$(mandir)/pi_stress.8.gz"
	gzip src/hwlatdetect/hwlatdetect.8 -c >"$(DESTDIR)$(mandir)/hwlatdetect.8.gz"

release: clean changelog
	mkdir -p releases
	rm -rf tmp && mkdir -p tmp/rt-tests
	cp -r Makefile COPYING ChangeLog src tmp/rt-tests
	tar -C tmp -czf rt-tests-$(VERSION_STRING).tar.gz rt-tests
	rm -f ChangeLog
	cp rt-tests-$(VERSION_STRING).tar.gz releases

rt-tests.spec: Makefile rt-tests.spec-in
	sed s/__VERSION__/$(VERSION_STRING)/ <$@-in >$@

HERE	:=	$(shell pwd)
RPMARGS	:=	--define "_topdir $(HERE)" 	\
		--define "_sourcedir $(HERE)/releases" 	\
		--define "_builddir $(HERE)/BUILD" 	\

rpm:	rpmdirs release rt-tests.spec
	rpmbuild -ba $(RPMARGS) rt-tests.spec

rpmdirs:
	@[ -d BUILD ]  || mkdir BUILD
	@[ -d RPMS ]   || mkdir RPMS
	@[ -d SRPMS ]  || mkdir SRPMS

help:
	@echo ""
	@echo " rt-tests useful Makefile targets:"
	@echo ""
	@echo "    all       :  build all tests (default"
	@echo "    install   :  install tests to local filesystem"
	@echo "    release   :  build source tarfile"
	@echo "    rpm       :  build RPM package"
	@echo "    clean     :  remove object files"
	@echo "    distclean :  remove all generated files"
	@echo "    help      :  print this message"