# PureScript to native binary (via C++) Makefile
#
# Run 'make' or 'make release' to build an optimized release build
# Run 'make debug' to build a non-optimized build suitable for debugging
#
# You can also perform a parallel build with 'make -jN', where N is the
# number of cores to use.
#
# PCC, PURESCRIPT_PKGS, OUTPUT, and BIN can all be overridden with the
# command itself. For example: 'make PURESCRIPT_PKGS=../gitpackages BIN=myexe'
#
# Flags can be added to either the codegen or native build phases.
# For example: 'make PCCFLAGS=--no-tco CXXFLAGS=-DDEBUG LDFLAGS=lobjc'
#
# You can also edit the generated version of this file directly.
#
PCC             := {bin/pcc} # example: /usr/local/bin/pcc
PURESCRIPT_PKGS := packages  # example: bower_components
PURESCRIPT_SRC  := src
OUTPUT          := output
BIN             := main

override PCCFLAGS += --comments
override CXXFLAGS += -std=c++11
override LDFLAGS  +=

ifeq ($(USE_GC),yes)
  override CXXFLAGS += -DUSE_GC
  override LDFLAGS += -lgc
endif

DEBUG := "-DDEBUG -g"
RELEASE := "-O3 -flto"

PURESCRIPT_PKG_SRCS := $(shell find $(PURESCRIPT_PKGS) -name '*.purs' | grep -v \/test\/ | grep -v \/example\/ | grep -v \/examples\/)
PURESCRIPT_SRCS := $(shell find $(PURESCRIPT_SRC) -name '*.purs')

INCLUDES := -I $(OUTPUT)
BIN_DIR := $(OUTPUT)/bin

release: codegen
	@$(MAKE) $(BIN) CXXFLAGS+=$(RELEASE)

debug: codegen
	@$(MAKE) $(BIN) CXXFLAGS+=$(DEBUG)

codegen:
	@$(PCC) $(PCCFLAGS) --output $(OUTPUT) $(PURESCRIPT_PKG_SRCS) $(PURESCRIPT_SRCS)

SRCS := $(shell find $(OUTPUT) 2>/dev/null -name '*.cc')

OBJS = $(SRCS:.cc=.o)
DEPS = $(SRCS:.cc=.d)

$(BIN): $(OBJS)
	@echo "Linking" $(BIN_DIR)/$(BIN)
	@mkdir -p $(BIN_DIR)
	@$(CXX) $(LDFLAGS) $^ -o $(BIN_DIR)/$@

-include $(DEPS)

%.o: %.cc
	@echo "Creating" $@
	@$(CXX) $(CXXFLAGS) $(INCLUDES) -MMD -MP -c $< -o $@

.PHONY: clean
clean:
	@-rm -rf $(OUTPUT)