src/.make/buildc_emcc.mk

   1 ##################################################
   2 #Desc:   Web Build System
   3 #Author: Mihrtec LLC
   4 #Date:   2016
   5 ##################################################
   6 #Compile Overrides for web
   7 ##################################################
   8 #redefine EXE directory for web platform
   9 EXEDIR    := $(BINDIR)/web/js
  10 #EMCC targets .js "executables"
  11 APPSUFFIX := .js
  12 #EMCC provides ports of each of these, so remove them
  13 #and recalculate CLIBS
  14 LIBS     := $(filter-out SDL2 SDL2_image SDL2_ttf, $(LIBS))
  15 CLIBS    := $(patsubst %,-l%,$(LIBS))
  16 #Override targets to make .bc files
  17 CTARG    := $(CTARG:.o=.bc)
  18 #Expand the list of plain-text functions into what emcc expects
  19 EXPORT_FUNCS := $(patsubst %,'_%',$(EXPORT_FUNCS))
  20 EXPORT_LIST := $(shell echo "$(EXPORT_FUNCS)" | sed -e 's@ @, @g')
  21 #Mark all remaining libs "missing" since they need to be built for emcc
  22 MISSINGLIBS := $(LIBS)
  23 #Set XTLibDir to one for bytecodes
  24 XTLIBDIR := $(XTLIBDIR)/bc
  25 #Override Automake vars
  26 AMGEN  := emconfigure $(AMGEN)
  27 AMCONF := emconfigure $(AMCONF)
  28 AMMAKE := emmake
  29
  30 #Set up emscripten APPFLAGS
  31 APPFLAGS += --separate-asm
  32 APPFLAGS += -s ALLOW_MEMORY_GROWTH=1
  33 APPFLAGS += -s FORCE_FILESYSTEM=1
  34 #APPLFAGS += --pre-js pre.js
  35
  36 #Set up emscripten flags for CC
  37 CFLAGS   += -s EXPORTED_FUNCTIONS="[$(EXPORT_LIST)]"
  38 CFLAGS   += -I$(XTDIR) -s USE_SDL=2 -s USE_SDL_IMAGE=2 -s USE_SDL_TTF=2
  39
  40 #Directory structure for web targets
  41 #Dirs for source files
  42 HTSRCDIR := $(REPOROOT)/html
  43 JSSRCDIR := $(HTSRCDIR)/js
  44 #Dirs for targets
  45 HTDIR    := $(EXEDIR)
  46 JSDIR    := $(HTDIR)/js
  47
  48 #Discover each type of object supported
  49 HTSRC   := $(wildcard $(HTSRCDIR)/*.html)
  50 JSSRC   := $(wildcard $(JSSRCDIR)/*.js)
  51 WEBSRC  := $(HTSRC) $(JSSRC)
  52
  53 #Translate sources into their required targets in APPDIR
  54 WEBTARG := $(patsubst $(HTSRCDIR)/%,$(HTDIR)/%,$(WEBSRC))
  55
  56 #Add APPDEPS for all web objects so they must be created
  57 #at build time, before compilation of the main executable
  58 APPDEPS += $(WEBOBJ)
  59
  60 #Later, we will use WEBTARG to define rules for "making"
  61 #these targets (with a cp action) and cleaning (with rm)
  62