Makefile

PREFIX=emsd
FILES=emsnudown.c snudown/src/*.c # snudown/html/*.c included in Python.h
INC=-Isnudown -Isnudown/html -Isnudown/src -Iinclude
EMCC=../emscripten/emcc
EMFLAGS=-s EXPORTED_FUNCTIONS="['_main','_render','_sanitise']" --pre-js js/preJs.js --post-js js/postJs.js --js-library js/pylib.js
# First general optimisation, then disable maths stuff,
# then memory reduction, then advanced optimisation
# TODO: chk: -s CHECK_SIGNS=1, opt: -s CORRECT_SIGNS=0
# -s CORRECT_OVERFLOWS=0 overridden by asm.js generation
OPTFLAGS=\
          -O2\
          --llvm-opts 3\
          --llvm-lto 1\
          --closure 1\
          -s PRECISE_I32_MUL=0\
          -s DOUBLE_MODE=0\
          -s PRECISE_I64_MATH=0\
          -s TOTAL_MEMORY=4194304\
          -s TOTAL_STACK=2097152\
          -s CLOSURE_ANNOTATIONS=1\
          -s RELOOP=1\
          -s CORRECT_ROUNDINGS=0
          #-s FORCE_ALIGNED_MEMORY=1  # breaks things
          #-s ASM_JS=0 # slightly smaller file
CHKFLAGS=
          -s ASSSERTIONS=2\
          -s SAFE_HEAP=1\
          -s CHECK_HEAP_ALIGN=1\
          -s CHECK_OVERFLOWS=1\
          -s CHECK_SIGNED_OVERFLOWS=1

.PHONY: all clean js html chk.js chk.html opt.js opt.html

all: js html chk.js chk.html opt.js opt.html

.SECONDEXPANSION:
js html chk.js chk.html opt.js opt.html: build/$(PREFIX).$$@

clean:
	rm -f build/*

build/$(PREFIX).html build/$(PREFIX).js: $(FILES)
	$(EMCC) $(FILES) $(INC) $(EMFLAGS) -o $@
build/$(PREFIX).chk.html build/$(PREFIX).chk.js: $(FILES)
	$(EMCC) $(FILES) $(INC) $(EMFLAGS) $(CHKFLAGS) -o $@
build/$(PREFIX).opt.js build/$(PREFIX).opt.html: $(FILES)
	$(EMCC) $(FILES) $(INC) $(EMFLAGS) $(OPTFLAGS) -o $@

# I don't think I should have to touch the file to make this work
emsnudown.c: include/Python.h js/*.js
	touch emsnudown.c