Makefile

   1 ################################################################################
   2 # Desc:   Web Cross Compiler
   3 # Author: ksg
   4 # Date:   2016
   5 ################################################################################
   6 # This makefile manages a build environment targeting native platforms with gcc
   7 # and web platforms with either emscripten or binaryen (js or wasm).
   8 ################################################################################
   9 # Each .c file is automatically compiled into an environment-dependent object
  10 # file of compiler-specific format (.o for gcc, .bc for llvm/emcc/em++).
  11 ################################################################################
  12 # webcc's root
  13 ROOT_DIR    := .
  14 # source directory to find compilable language files in
  15 SRC_DIR     := $(ROOT_DIR)/src
  16 # directory where files with 'main' functions live (can be in SRC_DIR)
  17 DRIVER_DIR  := $(SRC_DIR)/bin
  18 # make configuration directory
  19 CONF_DIR    := $(ROOT_DIR)/make
  20 # include initialization variables
  21 include $(CONF_DIR)/init.mk
  22 # Include the make libraries
  23 include $(CONF_DIR)/lib/*.mk
  24
  25 # The default rule to be built if none specified
  26 default: all
  27
  28 # If available, invoke the premake system
  29 ifdef PREMAKE_SOURCE_COMPILER
  30 $(eval $(call PREMAKE_SOURCE_COMPILER,))
  31 else
  32 $(info No premake system found, source-to-source languages (e.g. ragel) not functional)
  33 endif
  34
  35 # Backup the CVS password and CVSROOT environment vars in case we change them
  36 # during lib downloading
  37 $(if $(wildcard ~/.cvspass),\
  38 $(eval CVSPASS_BAK := $(file <~/.cvspass)))
  39 $(if $(CVSROOT),\
  40 $(eval CVSROOT_BAK := $(CVSROOT)))
  41
  42 # Initialize each language, look for its source files, and generate rules
  43 ifdef LANG_INIT
  44 $(foreach lang,$(LANGS),\
  45 $(eval $(call LANG_INIT,$(lang)))\
  46 )
  47 else
  48 $(error No LANG_INIT available, no languages can be compiled)
  49 endif
  50
  51 # Create module object rules for each module
  52 $(foreach module,$(MODULES),\
  53 $(eval $(call MODULE_ARCRULE,$(module)))\
  54 )
  55 $(if $(c_DBG),$(eval MAKE_DIRS += .$(c_DBG)/))
  56
  57 # Create lang-specific rules for producing final (linked) targets
  58 $(foreach lang,$(LANGS),\
  59 $(foreach drvsrc,$($(lang)_DRV_SRC),\
  60 $(eval $(call SRC_LANG_DRVRULE,$(drvsrc),$(lang)))\
  61 ))
  62
  63 # Create driver rules for each driver we found, let users call make specifying
  64 # the basename of the driver file, and just route to the correct linking rule
  65 $(foreach drvsrc,$(DRV_SRC),\
  66 $(eval $(call DRVSRC_DRIVERPHONY,$(drvsrc)))\
  67 )
  68
  69 .PHONY: all
  70 all: $(PH_TARGS)
  71
  72 # Rule to make any dirs that we're in charge of
  73 $(sort $(MAKE_DIRS)):
  74         @mkdir -p $@
  75
  76 # Cleaning rules.
  77 # Clean destroys all object files and internal module archives.
  78 CLEAN_TARGETS := $(sort $(foreach mtarg,$(MAKE_TARGETS),$(if $(wildcard $(mtarg)),$(mtarg))))
  79 clean: $(BUILTLIBS:%=clean_%)
  80         $(if $(CLEAN_TARGETS),rm $(CLEAN_TARGETS))
  81
  82 # Scrub destroys all distributable binaries
  83 SCRUB_TARGETS := $(sort $(foreach starg,$(SCRUB_TARGETS),$(if $(wildcard $(starg)),$(starg))))
  84 scrub: clean
  85         $(if $(SCRUB_TARGETS),rm $(SCRUB_TARGETS))
  86
  87 # Purge destroys all distributables created by a distributable binary
  88 # (e.g. assets)
  89
  90 # Uninstall destroys all objects and directories that can be recreated by this
  91 # make file
  92 uninstall: scrub
  93         rm -Rf $(MAKE_DIRS)