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#Desc:   Web Build System
#Author: Mihrtec LLC
#Date:   2016
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#Compile Overrides for web
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#redefine EXE directory for web platform
EXEDIR    := $(BINDIR)/web/js
APPSUFFIX := .js
#Override targets to make .bc files
LIBS     := $(filter-out SDL2 SDL2_image SDL2_ttf, $(LIBS))
CLIBS    := $(patsubst %,-l%,$(LIBS))
CTARG    := $(CTARG:.o=.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')
#Mark all libs "missing" since they need to be built for emcc
MISSINGLIBS := $(LIBS)
#Set XTLibDir to one for bytecodes
XTLIBDIR := $(XTLIBDIR)/bc
#Override Automake vars
AMGEN  := emconfigure $(AMGEN)
AMCONF := emconfigure $(AMCONF)
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="[$(EXPORT_LIST)]"
CFLAGS   += -I$(XTDIR) -s USE_SDL=2 -s USE_SDL_IMAGE=2 -s USE_SDL_TTF=2

#Directory structure for web targets
#Dirs for source files
HTSRCDIR := $(REPOROOT)/html
JSSRCDIR := $(HTSRCDIR)/js
#Dirs for targets
HTDIR    := $(EXEDIR)
JSDIR    := $(HTDIR)/js

#Discover each type of object supported
HTSRC   := $(wildcard $(HTSRCDIR)/*.html)
JSSRC   := $(wildcard $(JSSRCDIR)/*.js)
WEBSRC  := $(HTSRC) $(JSSRC)

#Translate sources into their required targets in APPDIR
WEBTARG := $(patsubst $(HTSRCDIR)/%,$(HTDIR)/%,$(WEBSRC))

#Add APPDEPS for all web objects so they must be created
#at build time, before compilation of the main executable
APPDEPS += $(WEBOBJ)

#Later, we will use WEBTARG to define rules for "making"
#these targets (with a cp action) and cleaning (with rm)