# SPDX-License-Identifier: GPL-2.0
include ../scripts/Makefile.include

bindir ?= /usr/bin

ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
endif

# Do not use make's built-in rules
# (this improves performance and avoids hard-to-debug behaviour);
MAKEFLAGS += -r

CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include

ALL_TARGETS := pcitest
ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))

SCRIPTS := pcitest.sh

all: $(ALL_PROGRAMS)

export srctree OUTPUT CC LD CFLAGS
include $(srctree)/tools/build/Makefile.include

#
# We need the following to be outside of kernel tree
#
$(OUTPUT)include/linux/: ../../include/uapi/linux/
	mkdir -p $(OUTPUT)include/linux/ 2>&1 || true
	ln -sf $(CURDIR)/../../include/uapi/linux/pcitest.h $@

prepare: $(OUTPUT)include/linux/

PCITEST_IN := $(OUTPUT)pcitest-in.o
$(PCITEST_IN): prepare FORCE
	$(Q)$(MAKE) $(build)=pcitest
$(OUTPUT)pcitest: $(PCITEST_IN)
	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@

clean:
	rm -f $(ALL_PROGRAMS)
	rm -rf $(OUTPUT)include/
	find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete

install: $(ALL_PROGRAMS)
	install -d -m 755 $(DESTDIR)$(bindir);		\
	for program in $(ALL_PROGRAMS); do		\
		install $$program $(DESTDIR)$(bindir);	\
	done;						\
	for script in $(SCRIPTS); do			\
		install $$script $(DESTDIR)$(bindir);	\
	done

FORCE:

.PHONY: all install clean FORCE prepare