Makefile

# SPDX-License-Identifier: GPL-2.0-only
# Top-level build orchestration.
#
#   make            build everything
#   make module     build kernel/krw.ko
#   make client     build the memflow-krw crate
#   make tests      build the C correctness tests
#   make bench      build the C benchmarks
#   make check      fmt + clippy on the crate
#   make vm         build everything and run the suite in a throwaway VM
#   make clean      remove build products
#
# Nothing here loads the module. Use `make vm`; see README.

CC      ?= cc
CFLAGS  ?= -O2 -Wall -Wextra
KDIR    ?= /lib/modules/$(shell uname -r)/build

TESTS := tests/test_krw tests/test_cow tests/helper
BENCH := bench/baseline bench/bench_krw

.PHONY: all module client tests bench check vm clean

all: module client tests bench

module:
	$(MAKE) -C kernel KDIR=$(KDIR)

client:
	cargo build --release

tests: $(TESTS)

bench: $(BENCH)

# Statically linked: the VM runs these against a rootfs we don't control.
tests/% bench/%: %.c
	$(CC) $(CFLAGS) -static -o $@ $<

tests/test_krw: tests/test_krw.c include/krw.h
	$(CC) $(CFLAGS) -static -o $@ $<

tests/test_cow: tests/test_cow.c include/krw.h
	$(CC) $(CFLAGS) -static -o $@ $<

tests/helper: tests/helper.c
	$(CC) $(CFLAGS) -static -o $@ $<

bench/baseline: bench/baseline.c
	$(CC) $(CFLAGS) -static -o $@ $<

bench/bench_krw: bench/bench_krw.c include/krw.h
	$(CC) $(CFLAGS) -static -o $@ $<

check:
	cargo fmt --all -- --check
	cargo clippy --release --all-targets -- -D warnings

vm:
	./vm/run.sh

clean:
	$(MAKE) -C kernel KDIR=$(KDIR) clean
	cargo clean
	rm -f $(TESTS) $(BENCH)