##################################################
#Desc:   Web Build System
#Author: Mihrtec LLC
#Date:   2016
##################################################
#Compile Overrides for web
##################################################
#EMCC compiles with llvm
CARCH   := llvm
#EMCC outputs to javascript
APPSUF  := .js
#Place JS binary output in dist/js
CBINDIR := $(DISTDIR)/js
#Object files are in LLVM bitcode format
COBJSUF := .bc
#Expand the list of plain-text functions into what emcc expects
EXPORT_FUNCS := $(patsubst %,'_%',$(EXPORT_FUNCS))
EXPORT_LIST := $(shell echo "$(EXPORT_FUNCS)" | sed -e 's@ @, @g')
#Override the linker sed script to find our string
LDSED := sed -e 's!.*rary \"\([a-zA-Z0-9\.]*\)\".*!\1!g'
##################################################
#Emscripten Ports
#To be replaced.  Emscripten's ports are not
#maintained well.
##################################################
EMPORTS := SDL2 SDL2_image SDL2_ttf
ifdef EMPORTS
#Remove EMPORTS from the linker
CLIBS := $(filter-out $(EMPORTS), $(CLIBS))
#Add supported ports to CFLAGS
CFLAGS  += -s USE_SDL=2 -s USE_SDL_IMAGE=2 -s USE_SDL_TTF=2
endif

#Override Automake vars (for building libs)
AMGEN  := emconfigure ./autogen.sh
AMCONF := emconfigure ./configure
AMMAKE := emmake

#Set up emscripten APPFLAGS
APPFLAGS += --separate-asm
APPFLAGS += -s ALLOW_MEMORY_GROWTH=1
APPFLAGS += -s FORCE_FILESYSTEM=1
#APPLFAGS += --pre-js pre.js

#Set up emscripten flags for CC
CFLAGS   += -s EXPORTED_FUNCTIONS="[$(EXPORT_LIST)]"