CC = gcc
CFLAGS = -O2 -g -Wall

# Check if sys/sdt.h is available
SDT_CHECK := $(shell echo '\#include <sys/sdt.h>' | $(CC) -E - >/dev/null 2>&1 && echo yes)

ifeq ($(SDT_CHECK),yes)
    CFLAGS += -DHAVE_SDT
    SDT_STATUS = "USDT probes ENABLED"
else
    SDT_STATUS = "USDT probes DISABLED (install systemtap-sdt-dev)"
endif

all: server
	@echo $(SDT_STATUS)

server: server.c
	$(CC) $(CFLAGS) -o $@ $<

# List the probes embedded in the binary
list-probes: server
	@echo "Probes in binary (requires USDT support):"
	readelf -n server 2>/dev/null | grep -A2 "stapsdt" || echo "No probes found"

# Alternative: use perf to list probes
perf-list: server
	perf probe -x ./server --list 2>/dev/null || echo "No probes found or perf not supported"

clean:
	rm -f server

install-deps:
	sudo apt install systemtap-sdt-dev bpftrace

.PHONY: all clean list-probes perf-list install-deps