Makefile.emscripten

CC := emcc
CXX := em++
DEBUG ?= 0

ifeq ($(DEBUG),1)
	OPTFLAGS := -O0 -g3 -flto
	ASSERTIONS := 2
	DEBUG_EMFLAGS := -s SAFE_HEAP=1
else
	OPTFLAGS := -O3 -flto
	ASSERTIONS := 0
	DEBUG_EMFLAGS :=
endif

# Emscripten stuff
EMFLAGS := --bind -s WASM=1 -s MODULARIZE=1 -s EXPORT_ES6=1 -s EXPORT_NAME="'TIVarsLib'" -s NO_EXIT_RUNTIME=1 -s ASSERTIONS=$(ASSERTIONS) -s DISABLE_EXCEPTION_CATCHING=0 -s EXPORTED_RUNTIME_METHODS="['FS','getExceptionMessage','decrementExceptionRefcount']" $(DEBUG_EMFLAGS)

CXXFLAGS := $(OPTFLAGS) -std=c++2a -DTH_GDB_SUPPORT=1 -Ivendor/pugixml -W -Wall -Wextra -fexceptions
CFLAGS := $(OPTFLAGS) -std=c2x -W -Wall -Wextra
LFLAGS := $(OPTFLAGS) $(EMFLAGS)

SOURCES := $(wildcard src/*.cpp) $(wildcard src/TypeHandlers/*.cpp) $(wildcard src/TypeHandlers/*.c) vendor/pugixml/pugixml.cpp

OBJS = $(patsubst %.c, %.bc, $(patsubst %.cpp, %.bc, $(SOURCES)))

OUTPUT := TIVarsLib
TEST_OUTPUT := tivars_tests_wasm

wasm:  $(OUTPUT).js

all: wasm

wasm-tests: $(TEST_OUTPUT).js
	node --no-warnings scripts/run_wasm_tests.mjs

%.bc: %.cpp
	$(CXX) $(CXXFLAGS) -c $< -o $@

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

$(OUTPUT).js: $(OBJS)
	$(CXX) $(CXXFLAGS) $(LFLAGS) $^ -o $@

tests_wasm.bc: tests.cpp
	$(CXX) $(CXXFLAGS) -Dmain=tivars_tests_main -c $< -o $@

scripts/wasm_tests_main.bc: scripts/wasm_tests_main.cpp
	$(CXX) $(CXXFLAGS) -c $< -o $@

$(TEST_OUTPUT).js: $(filter-out src/main_emscripten.bc,$(OBJS)) tests_wasm.bc scripts/wasm_tests_main.bc
	$(CXX) $(CXXFLAGS) $(OPTFLAGS) --bind -s WASM=1 -s MODULARIZE=1 -s EXPORT_ES6=1 -s EXPORT_NAME="'TIVarsTests'" -s NODERAWFS=1 -s EXIT_RUNTIME=1 -s ASSERTIONS=$(ASSERTIONS) -s DISABLE_EXCEPTION_CATCHING=0 -s ALLOW_MEMORY_GROWTH=1 -s EXPORTED_RUNTIME_METHODS="['callMain','getExceptionMessage','decrementExceptionRefcount']" $^ -o $@

clean:
	$(RM) -f $(OBJS) tests_wasm.bc scripts/wasm_tests_main.bc $(OUTPUT).js* $(OUTPUT).was* $(TEST_OUTPUT).js* $(TEST_OUTPUT).was*

.PHONY: all clean wasm wasm-tests