include vars.mk

ifeq ($(OS), Windows_NT)
	EXE_SUFFIX = .exe
else
	UNAME_S = $(shell uname -s)
	EXE_SUFFIX =
	PREFIX = /usr/local
	BINDIR = ${PREFIX}/bin
endif

COMMON_DIR := $(or $(COMMON_DIR),.)
DATA_DIR := $(or $(DATA_DIR),.)
PLUGIN_DIR := $(or $(PLUGIN_DIR),src)

CC = gcc
CXX = g++

CFLAGS = -O3 -Wall -Wpedantic -Wextra
CFLAGS_ALL = -I${DATA_DIR}/src -I${PLUGIN_DIR} -I${TINYWAV_DIR} -I${MIDI_PARSER_DIR}/include -fPIC ${CFLAGS} ${CFLAGS_EXTRA}

LDFLAGS =
LDFLAGS_ALL = ${LDFLAGS} ${LDFLAGS_EXTRA}

CXXFLAGS = ${CFLAGS}
CXXFLAGS_ALL = -I${DATA_DIR}/src -I${PLUGIN_DIR} -I${TINYWAV_DIR} -I${MIDI_PARSER_DIR}/include -fPIC ${CXXFLAGS} ${CXXFLAGS_EXTRA}

ifeq ($(UNAME_S), Darwin)
CFLAGS_ALL := ${CFLAGS_ALL} -arch arm64 -arch x86_64
LDFLAGS_ALL := ${LDFLAGS_ALL} -arch arm64 -arch x86_64
CXXFLAGS_ALL := ${CXXFLAGS_ALL} -arch arm64 -arch x86_64
endif

PROGRAM = ${BUNDLE_NAME}${EXE_SUFFIX}

C_SRCS = ${COMMON_DIR}/src/main.c ${MIDI_PARSER_DIR}/src/midi-parser.c ${C_SRCS_EXTRA}
C_OBJS = $(addprefix build/obj/, $(notdir $(C_SRCS:.c=.o)))

CXX_SRCS = ${CXX_SRCS_EXTRA}
CXX_OBJS = $(addprefix build/obj/, $(notdir $(CXX_SRCS:.cpp=.o)))

all: build/${PROGRAM}

ifeq ($(CXX_OBJS),)
build/${PROGRAM}: ${C_OBJS} build/obj/tinywav.o | build
	${CC} $^ -o $@ ${CFLAGS_ALL} ${LDFLAGS_ALL}
else
build/${PROGRAM}: ${C_OBJS} ${CXX_OBJS} build/obj/tinywav.o | build
	${CXX} $^ -o $@ ${CFLAGS_ALL} ${CXXFLAGS_ALL} ${LDFLAGS_ALL}
endif

build build/obj:
	mkdir -p $@

clean:
	rm -fr build

ifeq ($(OS), Windows_NT)
.PHONY: all clean
else
install: all
	mkdir -p -m 0755 ${BINDIR}
	install -m 0755 build/${PROGRAM} ${BINDIR}

.PHONY: all clean install
endif

.SECONDEXPANSION:

PERCENT := %

build/obj/tinywav.o: ${TINYWAV_DIR}/tinywav.c
	${CC} $^ -o $@ -c ${CFLAGS_ALL} -Wno-unused-result

$(C_OBJS): build/obj/%.o: $$(filter $$(PERCENT)/$$(basename $$(notdir $$@)).c,$$(C_SRCS)) | build/obj
	${CC} $^ -o $@ -c ${CFLAGS_ALL}

$(CXX_OBJS): build/obj/%.o: $$(filter $$(PERCENT)/$$(basename $$(notdir $$@)).cpp,$$(CXX_SRCS)) | build/obj
	${CXX} $^ -o $@ -c ${CXXFLAGS_ALL}