Makefile

# Written to build LeMon for use on Linux-based systems.
#
# To obtain a list of targets and what each one builds, you can enter 'make list'.
#
# WARNING: the libbpf library on your system MUST be >= v1.5.0. If your package maintainer
# does not offer this version, the install script will attempt to install it for you, but you should
# look at their instructions on how to build and install it from source if in doubt.
# Last updated: 11/5/25

vpath %.c src
vpath %.h include
vpath %.o object_files 

CC = clang
CFLAGS = -O3 -o LeMon -I include
LDFLAGS = -L/usr/lib -lbpf 

all: clean LeMon docs

.PHONY: list
list:
	@echo "LIST OF POSSIBLE MAKE TARGETS:\ninstall - installs all dependencies needed to run LeMon.\nLeMon - builds LeMon's user and kernel space components.\ndocs - builds LeMon's documentation using doxygen.\nclean - removes all built binaries, objects and documentation."

.PHONY: install
install:
	@chmod +x install
	@./install

.PHONY: docs
docs:
	@if [ -d "docs" ]; then rm -rf docs; fi
	@doxygen
	@cp -r assets docs/html

.PHONY: clean
clean:
	@if [ -d "object_files" ]; then rm -rf object_files; fi
	@if [ -d "docs" ]; then rm -rf docs; fi
	@if [ -f "LeMon" ]; then rm LeMon; fi

CPPFLAGS = --target=aarch64-linux-gnu -O2 -I include -L/usr/lib -lbpf 

LeMon: LeMon.c eBPFInKernelAndUserspace.h LeMon_Wired.o LeMon_Wireless.o
	$(CC) $(CPPFLAGS) $< -o $@
	@chmod u+x LeMon

CFLAGS = -D__TARGET_ARCH_arm64 -target bpf -Wall -O2 -c -g -I include

LeMon_Wired.o: LeMon_Wired.bpf.c
	if [ ! -d "object_files" ]; then mkdir object_files; fi
	$(CC) -c $(CFLAGS) $^ -o $@
	mv $@ object_files

LeMon_Wireless.o: LeMon_Wireless.bpf.c
	$(CC) -c $(CFLAGS) $^ -o $@
	mv $@ object_files