TARGET = x86_64-w64-mingw32

CC = $(TARGET)-gcc
RC = $(TARGET)-windres

ifdef prefix
PREFIX = $(prefix)
else
PREFIX = /usr/$(TARGET)
endif

CFLAGS = -Wall -Wpedantic -DNDEBUG -I$(PREFIX)/include/ddk -O0 -std=c2x
LDFLAGS = -Wl,--subsystem,native \
  -Wl,--image-base,0x10000 \
  -Wl,--file-alignment,0x1000 \
  -Wl,--section-alignment,0x1000 \
  -Wl,--entry,DriverEntry@8 \
  -mdll -nostartfiles -nostdlib

VERSION = $(shell git describe --tags --dirty | sed 's/^v//' 2> /dev/null)

ifneq ($(VERSION),)
  CFLAGS += -DEVEN_VERSION=\"$(VERSION)\"
  RCFLAGS += -DEVEN_VERSION=\\\"$(VERSION)\\\"
endif

# Kernel-mode libs:
#   libntoskrnl = basic kernel-mode environment
#   libhal = WRITE_PORT_UCHAR et al.
#KRNLIBS = -lntoskrnl -lhal
KRNLIBS = -lntoskrnl

LDFLAGS += $(KRNLIBS)

.SUFFIXES: .sys

.PHONY: clean third_party docker dist

all: even.sys

even.o: even_names.h even_ioctl.h even_peb.h third_party/utlist.h

%.res.o: %.rc
	$(RC) -i $< -o $@ $(RCFLAGS)

%.sys: %.o %.res.o
	$(CC) $^ -o $@ $(LDFLAGS) -Wl,--pdb,$*.pdb -s

clean:
	$(RM) *.o *.sys *.pdb

third_party/utlist.h: .peru/lastimports

third_party: .peru/lastimports
	peru reup --force

.peru/lastimports: peru.yaml
	peru sync || :

dist/:
	mkdir -p $@

docker: Dockerfile .dockerignore dist/
	docker build -t even --build-arg VERSION="$(VERSION)" .
	docker create --name even-build even
	docker export even-build | tar x -C dist
	docker rm -f even-build