# SPDX-License-Identifier: GPL-2.0+ OR MIT

ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
CLANG_FLAGS += -no-integrated-as
endif

top_srcdir = ../../../..
include $(top_srcdir)/scripts/subarch.include
ARCH ?= $(SUBARCH)
LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include

CFLAGS += -O2 -Wall -g -I./ $(KHDR_INCLUDES) -L$(OUTPUT) -Wl,-rpath=./ \
	  $(CLANG_FLAGS) -I$(top_srcdir)/tools/include \
	  -I$(LINUX_TOOL_ARCH_INCLUDE)
LDLIBS += -lpthread -ldl

# Own dependencies because we only want to build against 1st prerequisite, but
# still track changes to header files and depend on shared object.
OVERRIDE_TARGETS = 1

TEST_GEN_PROGS = basic_test basic_percpu_ops_test basic_percpu_ops_mm_cid_test \
		 param_test_benchmark param_test_mm_cid_benchmark

TEST_GEN_PROGS_EXTENDED = librseq.so \
	param_test \
	param_test_compare_twice \
	param_test_mm_cid \
	param_test_mm_cid_compare_twice \
	syscall_errors_test \
	legacy_check \
	slice_test \
	check_optimized

TEST_PROGS = run_param_test.sh run_syscall_errors_test.sh run_legacy_check.sh run_timeslice_test.sh

TEST_FILES := settings

include ../lib.mk

$(OUTPUT)/librseq.so: rseq.c rseq.h rseq-*.h
	$(CC) $(CFLAGS) -shared -fPIC $< $(LDLIBS) -o $@

$(OUTPUT)/%: %.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h
	$(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/basic_percpu_ops_mm_cid_test: basic_percpu_ops_test.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h
	$(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/param_test_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
					rseq.h rseq-*.h
	$(CC) $(CFLAGS) -DBENCHMARK $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/param_test_compare_twice: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
					rseq.h rseq-*.h
	$(CC) $(CFLAGS) -DRSEQ_COMPARE_TWICE $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/param_test_mm_cid: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
					rseq.h rseq-*.h
	$(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/param_test_mm_cid_benchmark: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
					rseq.h rseq-*.h
	$(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID -DBENCHMARK $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/param_test_mm_cid_compare_twice: param_test.c $(TEST_GEN_PROGS_EXTENDED) \
					rseq.h rseq-*.h
	$(CC) $(CFLAGS) -DBUILDOPT_RSEQ_PERCPU_MM_CID -DRSEQ_COMPARE_TWICE $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/syscall_errors_test: syscall_errors_test.c $(TEST_GEN_PROGS_EXTENDED) \
					rseq.h rseq-*.h
	$(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/slice_test: slice_test.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h
	$(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -o $@

$(OUTPUT)/check_optimized: check_optimized.c $(TEST_GEN_PROGS_EXTENDED) rseq.h rseq-*.h
	$(CC) $(CFLAGS) $< $(LDLIBS) -lrseq -o $@