# THIS MAKEFILE IS ONLY INTENDED FOR OPENBENCH
# BUILD WITH CMAKE PER THE INSTRUCTIONS IN THE README

EXE = midnight

SOURCES := src/move_generation/position.cpp src/move_generation/tables.cpp src/move_generation/types.cpp src/move_search/tables/transposition_table.cpp src/move_search/tables/pv_table.h src/utils/helpers.cpp src/utils/clock.cpp src/move_search/tables/history_table.cpp src/move_search/tables/lmr_table.cpp src/move_search/move_ordering/move_ordering.cpp src/engine.cpp src/move_search/reductions.cpp src/move_search/search.cpp src/move_search/types.cpp move_search/pvs.cpp



SUFFIX :=

CXX := clang++
CXXFLAGS := -std=c++20 -O3 -flto -march=native -DNDEBUG -DPS_NATIVE -DPS_VERSION=$(shell git rev-parse --short HEAD)

LDFLAGS :=

ifeq ($(OS), Windows_NT)
	DETECTED_OS := Windows
	SUFFIX := .exe
# don't support gcc on windows, too much of a pain for now
	ifeq (,$(findstring clang,$(shell $(CXX) --version)))
		$(error GCC and MSVC unsupported on Windows)
	endif
	LDFLAGS += -fuse-ld=lld
else
	DETECTED_OS := $(shell uname -s)
	SUFFIX :=
	ifneq (,$(findstring clang,$(shell $(CXX) --version)))
		ifneq ($(DETECTED_OS),Darwin)
			LDFLAGS += -fuse-ld=lld
		endif
	endif
	LDFLAGS += -lpthread
# don't ask
ifdef IS_COSMO
    CXXFLAGS += -stdlib=libc++
endif
endif

OUT := $(EXE)$(SUFFIX)

all: $(EXE)

$(EXE): $(SOURCES)
	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o $(OUT) $^

clean: