--- /dev/null
+################################################################################
+# Desc: Web Cross Compiler
+# Author: Ken Grimes
+# Date: 2016
+################################################################################
+# This makefile manages a build environment targeting native platforms with gcc
+# and web platforms with either emscripten or binaryen (js or wasm).
+################################################################################
+# Each .c file is automatically compiled into an environment-dependent object
+# file of compiler-specific format (.o for gcc, .bc for llvm/emcc/em++).
+################################################################################
+# The default rule to be built if none specified
+default: all
+# Base directories
+# webcc's root
+ROOT_DIR := .
+# source directory to find compilable language files in
+SRC_DIR := $(ROOT_DIR)/src
+# directory where files with 'main' functions live (can be in SRC_DIR)
+DRIVER_DIR := $(SRC_DIR)/bin
+# make configuration directory
+CONF_DIR := $(ROOT_DIR)/.make
+# Source languages handled by this build system. These languages are capable of
+# being compiled to an intermediary format for binary output by one of the
+# provided compilersfor each language
+LANGS := c cpp go
+# Source-to-source languages handled by this build system
+SLANGS := y rl
+# Language-specific compilers and flags passed in from environment
+c_C := $(strip $(notdir $(CC)))
+c_FLAGS := $(strip $(CFLAGS)) -I$(SRC_DIR)
+c_LIBS := SDL2 wolfssl
+c_SRCL := y
+cpp_C := $(strip $(notdir $(CXX)))
+cpp_FLAGS := $(strip $(CXXFLAGS)) $(c_FLAGS)
+cpp_LIBS := $(c_LIBS)
+go_C := gccgo
+go_FLAGS := $(c_FLAGS)
+# Source to source languages
+# Bison
+y_C := bison
+y_FLAGS := -d
+y_STEM := tab
+y_TRG := c h
+# Ragel
+rl_C := ragel
+rl_FLAGS := -C
+rl_TRG := c
+# Compiler-specific associations. Each compiler has a binary object suffix
+# (OBJ), an archiver (AR), and an archiver object suffix (AROBJ). Each compiler
+# may optionally have defined a linker (LD), and a binary output suffix (OUT).
+cc_OBJ := o
+cc_LD := $(LD)
+cc_AR := $(AR)
+cc_AROBJ := a
+cc_DBG := gdb
+$(cpp_C)_LD := $(cc_LD)
+gcc_OBJ := $(cc_OBJ)
+gcc_LD := $(cc_LD)
+ngcc_AR := $(cc_AR)
+gcc_AROBJ := $(cc_AROBJ)
+gcc_DBG := $(cc_DBG)
+emcc_OBJ := bc
+emcc_AR := emar
+emcc_AROBJ := $(emcc_OBJ) #emar is just a python script that reparses shit for emcc
+emcc_OUT := .js
+g++_OBJ := $(cc_OBJ)
+em++_OBJ := $(emcc_OBJ)
+em++_AR := $(emcc_AR)
+em++_AROBJ := $(emcc_AROBJ)
+em++_OUT := $(emcc_OUT)
+gccgo_OBJ := o
+gccgo_LD := $(cc_LD)
+gccgo_AR := $(cc_AR)
+gccgo_AROBJ := $(cc_AROBJ)
+# Shell functions to determine what libraries can be linked by the compiler
+cc_LDLIBS := $(shell ls /usr/lib | grep ".o" | sed -e 's@^.*lib\([_\+a-zA-Z0-9\-]*\)\..*@\1@g')
+gcc_LDLIBS := $(cc_LDLIBS)
+emcc_LDLIBS :=
+g++_LDLIBS := $(cc_LDLIBS)
+em++_LDLIBS :=
+go_LDLIBS := $(cc_LDLIBS)
+# location to build cross-compilation libraries in, not intended to be installed
+# in the host system
+LIB_DIR := $(ROOT_DIR)/lib$(shell uname -m)/$($(c_C)_OBJ)
+LIBDL_DIR := $(LIB_DIR)/.cache
+LIBINC_DIR := $(ROOT_DIR)/include
+# The makefile MUST be capable of generating these directories and all of their
+# contents. These directories are removed during the 'scrub' rule
+MAKE_DIRS := $(LIB_DIR) $(LIBDL_DIR)
+# Set up lib inclusions, and scan for built libs
+c_FLAGS += -I$(LIBINC_DIR)
+c_OBJ := $($(c_C)_OBJ)
+# Modules are any directories other than 'DRIVER_MODULE' in 'SRC_DIR' and
+# produce a single archive in 'SRC_DIR' containing all of the module's symbols
+MODULES := $(patsubst $(SRC_DIR)/%/,%,$(filter-out $(DRIVER_DIR)/%,$(shell ls -d $(SRC_DIR)/*/)))
+
+#AWK_REVERSE_SQUASH##############################################################
+# The following awk program reverses the order of a list while also removing
+# duplicate entries. The effect of this when run on the dependency tree is that
+# it will remove duplicates occurring in reverse order, allowing the most deeply
+# nested libraries to be built, and linked, first. ##############################
+define AWK_REVERSE_SQUASH =
+awk \
+'
+{ for(i=NF;i>0;i--)
+ printf (!a[$$i]++) ? $$i FS : "";
+ i=split("",a);
+ print ""
+}
+'
+#/AWK_REVERSE_SQUASH#############################################################
+endef
+
+#PREMAKE_SOURCE_COMPILER#########################################################
+# Compile any source-to-source languages before executing the majority of make ##
+#################################################################################
+define PREMAKE_SOURCE_COMPILER =
+# Find the sources for each source-to-source language
+$(foreach slang,$(SLANGS),
+$(eval SLANG_SRC := $(shell find $(SRC_DIR) -name "*.$(slang)" -not -name ".*"))
+# Foreach target type in the source-to-source language, add this source's
+# targets to the list of the current source-to-source language targets
+$(eval undefine SLANG_TRG)
+$(foreach trg,$($(slang)_TRG),
+$(eval SLANG_TRG += $(SLANG_SRC:%.$(slang)=%.$(if $($(slang)_STEM),$($(slang)_STEM).)$(trg))))
+# Stat the source file's last-modified time to the var SRC_TIME
+$(foreach src,$(SLANG_SRC),
+# Establish a command to run for compiling this file
+$(eval SHELL_CMD := cd $(dir $(src)) && $($(slang)_C) $($(slang)_FLAGS) $(notdir $(src)))
+# Evaluate missing targets
+$(eval FOUND_TRG := $(shell find $(dir $(src)) -name "$(basename $(notdir $(src))).*" -not -name ".*"))
+$(eval MISSING_TRG := $(filter-out $(FOUND_TRG), $(SLANG_TRG)))
+# Check timings of existing files
+$(eval SRC_TIME := $(shell stat -c %Y $(src)))
+# For each of the targets created by this source language, evaluate the
+# last-modified times of each potential target. If the file does not exist, set
+# the time to '0', otherwise set it to the -c %Y result from statting the file.
+$(foreach srctrg,$(filter $(basename $(src))%, $(SLANG_TRG)),
+$(eval TRG_TIMES += $(if $(wildcard $(srctrg)),$(shell stat -c %Y $(srctrg)),0)==$(srctrg)))
+# Sort TRG_TIMES, which will produce a list of oldest-first files and timestamps
+# of the form [last-modified-deltatime]==[filename]
+$(eval TRG_TIMES := $(shell echo $(sort $(TRG_TIMES)) | $(call AWK_REVERSE_SQUASH)))
+# Evaluate the newest time from our ordered list by splitting the word up by its
+# '==' connectors and looking at the first word
+$(eval NEWEST_TRG_TIME := $(word 1,$(subst ==, ,$(TRG_TIMES))))
+# Find the older of the two times (between SRC_TIME and NEWEST_TRG_TIME)
+$(eval OLDER_TIME := $(firstword $(sort $(NEWEST_TRG_TIME) $(SRC_TIME))))
+# If the older of the two times is the newest target time found, then we need to
+# rebuild, but only if our build rule intends to actually make something. If it
+# instead does not intend to actually make a target, drop a functional rule that
+# could hypothetically make the target for debugging and analysis purposes
+$(if $(MAKECMDGOALS),
+$(eval BUILDGOALS := $(filter-out clean scrub purge uninstall,$(MAKECMDGOALS))),
+$(eval BUILDGOALS := all))
+$(if $(and $(BUILDGOALS),$(or $(MISSING_TRG), $(filter $(OLDER_TIME),$(NEWEST_TRG_TIME)))),
+$(if $(findstring n,$(MAKEFLAGS)),
+$(SLANG_TRG):
+ $(SHELL_CMD)
+,
+$(info $(SHELL_CMD) $(eval $(shell $(SHELL_CMD)))))
+))
+# Put these targets on the MAKE_TARGETS list to be removed during "clean",
+# regardless of whether or not they were built just now.
+$(eval MAKE_TARGETS += $(SLANG_TRG))
+)
+#/PREMAKE_SOURCE_COMPILER########################################################
+endef
+# Compile a source language to a language that compiles to binary, but only if
+# our build rule intends to build some kind of target
+$(eval $(call PREMAKE_SOURCE_COMPILER,))
+
+
+# Backup the CVS password and CVSROOT environment vars in case we change them
+$(if $(wildcard ~/.cvspass),\
+$(eval CVSPASS_BAK := $(file <~/.cvspass)))
+$(if $(CVSROOT),\
+$(eval CVSROOT_BAK := $(CVSROOT)))
+
+# A long function definition to grab deps from the source's compiler and route
+# errors to /dev/null if the rule generator expresses bogus errors
+define SRC_LANG_FLAGS_OPT_DEPS =
+$(filter-out \ %:,$(shell $($2_C) $3 $4 -MG $1 2> /dev/null))
+endef
+
+#SRC_LANG_RULE###################################################################
+# Given a source and a language, generate a rule to make the object. The second
+# invocation of gcc per file lists only its local includes, and filters out
+# anything already caught. Anything remaining should be considered to be
+# available in the current working directory of the source file(i.e. if you
+# '#include "something.h"' in 'mymodule/horseradish.c', you would expect to
+# include 'mymodule/something.h'. this check lets that happen), otherwise it is
+# some kind of user error #######################################################
+define SRC_LANG_RULE =
+$(if $($1),,$(eval $1 := t)\
+$(eval MOD := $(filter $(MODULES),$(firstword $(subst /, ,$(subst $(SRC_DIR),,$(dir $1))))))\
+$(eval FLG := $(MOD:%=-I% ))\
+$(if $(wildcard $1),
+$(eval DEPS := $(filter-out \ %:,$(shell $($2_C) $(FLG) -M -MG $1)))\
+$(eval DDEPS := $(filter $(DRIVER_DIR:$(SRC_DIR)/%=%/%),$(DEPS)))\
+$(eval MDEPS := $(filter $(MODULES:%=%/%),$(DEPS)))\
+$(eval DEPS := $(filter-out $(DDEPS) $(MDEPS),$(DEPS)))\
+$(eval MDEPS := $(MDEPS:%=$(SRC_DIR)/%))\
+$(eval DDEPS := $(DDEPS:%=$(SRC_DIR)/%))\
+$(eval LOST := $(filter-out \ %: $(DRIVER_DIR:./%=%)/% $(MODULES:%=$(SRC_DIR:./%=%)/%/%),$(shell $($2_C) $(FLG) -MM -MG $1)))\
+$(eval MDEPS += $(LOST:%=$(dir $1)%))\
+$(eval MDEPS := $(shell echo $(MDEPS) | sed -e 's@[a-zA-Z0-9\-\+/]*\.\./include@$(LIBINC_DIR)@g'))\
+$(eval ALLDEPS := $(DDEPS) $(MDEPS) $(DEPS)),\
+$(error Cannot generate deps for: $1, file not found))\
+$(eval SRC_OBJ := $(basename $1).$($2_OBJ))\
+$(eval MAKE_TARGETS += $(SRC_OBJ))
+# Assume that lost dependencies are in the folder with the source
+$(foreach lost,$(LOST),
+$(eval ALLDEPS := $(subst $(lost), $(dir $1)$(lost),$(ALLDEPS))))
+
+# Find any deps that aren't built yet, which the compiler has flagged
+# as missing, but which we know the expected location of libs for
+# this language should have their includes in 'LIBINC_DIR'
+$(eval BUILDDEPS := $(filter $($2_LIBS:%=%/%),$(ALLDEPS)))
+$(eval ALLDEPS := $(filter-out $(BUILDDEPS),$(ALLDEPS)) $(BUILDDEPS:%=$(LIBINC_DIR)/%))
+# Object for $1
+$(SRC_OBJ): $(ALLDEPS)
+ $($2_C) $$($2_FLAGS) $(FLG) -c -o $$@ $1
+$(if $($2_DBG),\
+$(eval DBG_OBJ := $(dir $1).$($2_DBG)/$(basename $(notdir $1)).$($2_OBJ))\
+$(if $(findstring $(dir $(DBG_OBJ)),$(MAKE_DIRS)),,\
+$(eval MAKE_DIRS += $(dir $(DBG_OBJ))))
+$(eval MAKE_TARGETS += $(DBG_OBJ))
+# Object for $1 with $($2_DBG) symbols
+$(DBG_OBJ): $(ALLDEPS) | $(dir $(DBG_OBJ))
+ $($2_C) $$($2_FLAGS) $(FLG) -Og -g$($2_DBG) -c -o $$@ $1
+))
+#/SRC_LANG_RULE##################################################################
+endef
+
+#SRC_LANG_DRVRULE################################################################
+# establish a build and link rule given a source driver and language ############
+define SRC_LANG_DRVRULE =
+$(eval DRIVER_NAME := $(basename $(notdir $1)))
+$(eval DRIVER_TARG := $(1:$(SRC_DIR)/%.$2=$(ROOT_DIR)/%$($2_OUT)))
+$(eval DRIVER_SOB := $(basename $1).$($2_OBJ))
+
+# Generate a rule for the driver object
+$(eval $(call SRC_LANG_RULE,$1,$2))
+
+# Modules can be implicitly specified by a driver if its dependencies include
+# ANY files from any module directory. The 'MDEPS' var is set by SRC_LANG_RULE
+# and expresses the dependencies required to build the object file only.
+$(foreach module_dep,$(MDEPS),
+$(eval DRIVER_MODULES += $(firstword $(subst /, ,$(module_dep))))
+)
+$(eval DRIVER_MODULES := $(filter-out $(DRIVER_DIR) . ..,$(sort $(DRIVER_MODULES))))
+
+# In the event that the driver developer does not wish to include a header to
+# any internal modules, the developer may instead create a file with the same
+# basename as the driver, but with the '.ld' suffix, which contains a space
+# separated list of internal modules to link together during compilation
+$(eval DRIVER_LDVALS := $(file <$(1:%.$2=%.ld)))
+$(eval DRIVER_LFLAGS := $(filter -l%,$(DRIVER_LDVALS)))
+$(eval DRIVER_MODULES += $(filter-out -l%,$(DRIVER_LDVALS)))
+
+# List of module archives to link together during compilation
+$(eval DRIVER_ARCHIVES := $(DRIVER_MODULES:%=$(SRC_DIR)/%.$($2_AROBJ)))
+$(eval DRIVER_DEPS := $(DRIVER_SOB) $(DRIVER_ARCHIVES))
+$(eval DRIVER_DBGARCHIVES := $(DRIVER_MODULES:%=$(SRC_DIR)/.$($2_DBG)/%.$($2_AROBJ)))
+$(eval DRIVER_DBGDEPS := $(dir $(DRIVER_SOB)).$($2_DBG)/$(notdir $(DRIVER_SOB)))
+$(eval DRIVER_DBGDEPS += $(DRIVER_DBGARCHIVES))
+
+# If the compiler supports linking, distinguish static from dynamic links,
+# otherwise set all libraries to static
+$(if $($($2_C)_LD),\
+$(eval STLIBS := $(filter-out $($($2_C)_LDLIBS),$($2_LIBS)))\
+$(eval DLIBS := $(filter-out $(STLIBS),$($2_LIBS))),\
+$(eval STLIBS := $($2_LIBS)))
+
+# Directory setup
+$(eval DRIVER_TARG_DIR := $(dir $(1:$(SRC_DIR)/%.$2=$(ROOT_DIR)/%)))
+$(eval MAKE_DIRS += $(DRIVER_TARG_DIR))
+$(if $($2_DBG),$(eval MAKE_DIRS += $(DRIVER_TARG_DIR).$($2_DBG)))
+
+# Setup the sources for this object. A driver build rule does not include any
+# compile steps at all, and so should not contain any sources that are,
+# themselves, traditional "source files" like a language-compiled 'c' file. The
+# driver depends on the existence of its equivalent object file (created through
+# compilation), which is expected to contain a 'main' function (or entry for
+# '_start'). This driver object is then simply linked to its libraries and
+# module archives to create an executable binary in the output folder.
+# ORDER MATTERS HERE, this is for the linker:
+$(eval DRIVER_SRC := $(DRIVER_LFLAGS) $(DRIVER_DEPS))
+$(eval DRIVER_DBGSRC := $(DRIVER_LFLAGS) $(DRIVER_DBGDEPS))
+# Iterate through the list of libraries in our language and stack commands from
+# left to right in the "sources" section of the LD command (or LD section of the
+# commandline for the compiler), to preserve ordering and also ensure that it is
+# linked correctly IN THAT ORDER (static vs dynamic).
+$(foreach lib,$($2_LIBS),\
+$(if $(findstring $(lib),$(STLIBS)),
+# Evaluate static lib $(lib) and add it to the dependencies and sources of the rules we built
+$(eval STATIC_SRC := $(LIB_DIR)/lib$(lib).$($2_AROBJ))\
+$(eval STATIC_DBGSRC := $(LIB_DIR)/.$($2_DBG)/lib$(lib).$($2_AROBJ))\
+$(eval DRIVER_SRC := $(STATIC_SRC) $(DRIVER_SRC))\
+$(eval DRIVER_DBGSRC := $(STATIC_DBGSRC) $(DRIVER_DBGSRC))\
+$(eval DRIVER_DEPS += $(STATIC_SRC))\
+$(eval DRIVER_DBGDEPS += $(STATIC_DBGSRC)),
+# Add dynamic lib to the sources with a link flag, in its correct ordering
+$(eval DRIVER_SRC := -l$(lib) $(DRIVER_SRC))\
+$(eval DRIVER_DBGSRC := -l$(lib) $(DRIVER_DBGSRC))\
+))
+
+# Add the driver target to this language's targets for cleaning
+$(eval SCRUB_TARGETS += $(DRIVER_TARG))
+$(DRIVER_TARG): $(DRIVER_DEPS) | $(DRIVER_TARG_DIR)
+ $($2_C) $($2_FLAGS) $(DRIVER_SRC) -o $$@
+# Output a rule for building with debug flags
+$(eval DRIVER_DBGTARG := $(DRIVER_TARG_DIR)$(basename $(notdir $(DRIVER_TARG)))-d$($2_OUT))
+$(eval SCRUB_TARGETS += $(DRIVER_DBGTARG))
+$(eval MAKE_DIRS += $(DRIVER_TARG_DIR).$($2_DBG)/)
+$(DRIVER_DBGTARG): $(DRIVER_DBGDEPS) | $(DRIVER_TARG_DIR)
+ $($2_C) $($2_FLAGS) $(DRIVER_DBGSRC) -o $$@
+# Make a rule to run this driver after building
+$(DRIVER_NAME)-run: $(DRIVER_TARG)
+ $(DRIVER_TARG)
+$(DRIVER_NAME)-d: $(DRIVER_DBGTARG)
+
+#/SRC_LANG_DRVRULE###############################################################
+endef
+
+#MODULE_ARCRULE##################################################################
+# generate rule for turning an entire module's collection of binary objects into
+# a single locally-linked (no external -L libs) object (for simplified linking
+# modules as static libs).#######################################################
+define MODULE_ARCRULE =
+$(eval ARCDEPS := $(filter $1/%.$(c_OBJ),$(foreach lang,$(LANGS),$($(lang)_MOD_TRG))))\
+$(eval MAKE_TARGETS+= $1.$(c_AROBJ))\
+
+$(SRC_DIR)/$1.$(c_AROBJ): $(ARCDEPS)
+ $(c_AR) cr $$@ $$^
+$(if $(c_DBG),
+$(eval undefine DBGARCDEPS)
+$(foreach arcdep,$(ARCDEPS),$(eval DBGARCDEPS += $(dir $(arcdep)).$(c_DBG)/$(notdir $(arcdep))))
+$(eval MAKE_TARGETS+= .$(c_DBG)/$1.$(c_AROBJ))\
+
+$(SRC_DIR)/.$(c_DBG)/$1.$(c_AROBJ): $(DBGARCDEPS) | .$(c_DBG)/
+ $(c_AR) cr $$@ $$^
+)
+#/MODULE_ARCRULE#################################################################
+endef
+
+# LANG_LIB_PARENT_BUILDRULE######################################################
+# define rules for creating unknown libraries in the local build environment for
+# either binary or bytecode representation given a library name and, optionally,
+# a parent lib that included it for error reporting #############################
+define LANG_LIB_PARENT_BUILDRULE =
+$(eval CONF_FLAG := --prefix=$(abspath $(LIB_DIR)).trash)
+$(eval CONF_FLAG += --includedir=$(abspath $(LIBINC_DIR)))
+# Setup installation rule steps for this lib
+$(eval
+BUILDSTEPS := $(if $(AUTOGEN),$(AUTOGEN) && )
+BUILDSTEPS += $(if $(CONFIGURE),$(CONFIGURE) $(CONF_FLAG) --libdir=$(abspath $(LIB_DIR)) && )
+$(if $(MKCMD),\
+BUILDSTEPS += $(MKCMD),
+$(error $2.mk requires a valid MKCMD definition))
+$(if $(MKINSTALL),\
+INSTALLCMD := $(MKINSTALL),\
+$(error $2.mk requires a valid MKINSTALL definition))
+CLEANCMD := $(MKCLEAN)
+)
+# Construct the download method, or error if there isn't a valid one
+$(if $(GITADDR),$(eval LIBDL := git clone $(GITADDR) $2),\
+$(if $(HGADDR),$(eval LIBDL := hg clone $(HGADDR) $2),\
+$(if $(CVSADDR),\
+$(eval LIBDL := export CVSROOT=$(CVSADDR))\
+$(eval LIBDL += && echo '$(CVSPASS)' > ~/.cvspass)\
+$(eval LIBDL += && cvs $($2_CVSGET))
+$(eval LIBDL += && $(if $(CVSPASS_BAK),echo $(CVSPASS_BAK) > ~/.cvspass,rm ~/.cvspass)),\
+$(if $(WEBADDR),$(eval LIBDL := wget -O $(WEBTARG) $(WEBADDR)),\
+$(eval $(error No way to download $2 needed by $3 for $1 language ))))))
+# '$2' Download Rule
+$(LIBDL_DIR)/$2:
+ mkdir -p $$@
+ cd $(LIBDL_DIR) && $(LIBDL) $(if $(WEBINIT),&& $(WEBINIT))
+# '$2' Make and install rule, and ensure it isn't marked "clean"
+$(LIB_DIR)/lib$2.$($1_AROBJ): $(LIBDEPS:%=$(LIB_DIR)/lib%.$($1_AROBJ)) | $(LIBDL_DIR)/$2
+ @mkdir -p $(LIB_DIR)
+ cd $(LIBDL_DIR)/$2 && export LD_RUN_PATH=$(LIBLDPATH) && $(BUILDSTEPS)
+ cd $(LIBDL_DIR)/$2 && $(INSTALLCMD)
+ @rm -f $(LIBDL_DIR)/$2.clean
+
+# '$2' Rule for building under debug mode
+$(if $($1_DBG),\
+$(eval LIBDBG_DIR := $(LIB_DIR)/.$($1_DBG))\
+$(eval $(if $(findstring $(LIBDBG_DIR),$(MAKE_DIRS)),,MAKE_DIRS += $(LIBDBG_DIR)))\
+$(eval LIBDBG_TARG := $(LIBDBG_DIR)/lib$2.$($1_AROBJ))\
+$(eval LIBDBG_DEPS := $(LIBDEPS:%=$(LIB_DIR)/.$($1_DBG)/lib%.$($1_AROBJ)))\
+$(eval DBGBUILDSTEPS := $(if $(AUTOGEN),$(if $(AUTOGENDBG),$(AUTOGENDBG),$(AUTOGEN)) && ))\
+$(eval DBGBUILDSTEPS += $(if $(CONFIGURE),$(if $(CONFIGUREDBG),$(CONFIGUREDBG),$(CONFIGURE)) $(CONF_FLAG) --libdir=$(abspath $(LIB_DIR))/.$($1_DBG)))\
+$(eval DBGBUILDSTEPS += $(if $(MKDBGCMD),$(MKDBGCDM),$(MKCMD)))\
+
+# '$2' Make and install rule for debugging
+$(LIBDBG_TARG): $(LIBDBG_DEPS) | $(LIBDL_DIR)
+ @mkdir -p $(LIBDBG_DIR)
+ cd $(LIBDL_DIR)/$2 && export LD_RUN_PATH=$(LIBLDPATH:$(LIB_DIR)%=$(LIBDBG_DIR)) && $(DBGBUILDSTEPS)
+ cd $(LIBDL_DIR)/$2 && $(INSTALLCMD)
+ @rm -f $(LIBDL_DIR)/$2.clean
+)
+
+# '$2' Clean rule - drop a marker in the directory so we don't bother cleaning
+# things that are clean... by default there is no real way of tracking this in a
+# makefile
+clean_$2:
+ $$(if $$(wildcard $(LIBDL_DIR)/$2),$$(if $$(wildcard $(LIBDL_DIR)/$2.clean),,\
+ cd $(LIBDL_DIR)/$2 && $(CLEANCMD) && touch $(abspath $(LIBDL_DIR))/$2.clean))
+
+#/LANG_LIB_PARENT_BUILDRULE######################################################
+endef
+
+
+#LANG_LIB_INIT###################################################################
+# For every library in this language, we need to determine how, and if, to link
+# its data. This could potentially be done recursively as libraries have
+# dependencies upon each other. We call a recursive macro here to expand out
+# all the libs for this language, and then flatten the tree by removing
+# duplicates with shell commands. We can't use make's 'sort' function because
+# we actually care about the ordering so that interdependent libraries can link
+# back up the tree ##############################################################
+define LANG_LIB_INIT =
+# Initialize per-library data, then import data from an accompanying file that
+# can overwrite these vars
+$(eval
+# Implicit defaults for lib.mk files
+AUTOGEN := ./autogen.sh
+AUTOGENDBG := ./autogen.sh --enable-debug
+CONFIGURE := ./configure
+MKCMD := make -k
+MKINSTALL := make -k install
+MKCLEAN := make clean
+MKDBGCMD := make -k
+LIBDEPS :=
+LIBLANGS := c cpp go
+LIBLDPATH := $(if $($($1_C)_LD),$(if $(LD_LIBRARY_PATH),$(LD_LIBRARY_PATH):,/usr/lib:)$(abspath $(LIB_DIR)))
+# One of these must be defined in the .mk file imported
+$(foreach var, GITADDR WEBADDR HGADDR CVSADDR,\
+$(eval undefine $(var)))
+# Other, optional, variables to clear
+$(foreach var, WEBTARG WEBINIT CVSGET CVSPASS CONFIGUREDBG,
+$(eval undefine $(var)))
+)
+# If there is a .mk file for this lib, import it. Otherwise, we'll try to link
+# it later, unless there is no linker for the language's compiler.
+$(if $(wildcard $(CONF_DIR)/$2.mk),$(eval $(file <$(CONF_DIR)/$2.mk)),\
+$(if $($($1_C)_LD),\
+$(warning No $2.mk for lib$2, attempting to link from the system),\
+$(error No $2.mk for lib$2 and '$($1_C)' is not configured for linking)))\
+
+# Add dependencies we found (potentially recursively, ignore repeats until later
+# so we can preserve ordering information for interdependency build ordering)
+$(if $(LIBDEPS),\
+$(eval $1_LIBS += $(LIBDEPS)))
+# languages that can link this library (typically any lang that shares the
+# object format (ELF by default, but this is compiler-dependent (e.g. emcc uses
+# llvm bitcode, which is just an intermediary representation of data that can
+# link to anything else statically, or as an archive)))
+$(if $(findstring $1,$(LIBLANGS)),,\
+$(error $2.mk must specifically set LIBLANGS := $1 if it is compatible with $1))
+# Mark this lib as available for all its other compatible languages. This list
+# is assumed to be sorted later, so we will ignore repeats for speed
+$(foreach lang,$(LIBLANGS),\
+$(if $(findstring $2,$($(lang)_LIBS)),,\
+$(eval $(lang)_LIBS += $2)))
+# Generate a build rule for this lib, unless it's already built
+$(if $(findstring $2,$(BUILTLIBS)),,\
+$(eval $(call LANG_LIB_PARENT_BUILDRULE,$1,$2,$3))\
+$(eval BUILTLIBS += $2))
+# Recurse this function for every libdep encountered
+$(foreach libdep,$(LIBDEPS),\
+$(call LANG_LIB_INIT,$1,$(libdep),$2))
+#/LANG_LIB_INIT#################################################################
+endef
+
+# Initialize data for supported lanaguages ######################################
+define LANG_INIT =
+$(eval
+$1_OBJ := $($($1_C)_OBJ)
+$1_OUT := $($($1_C)_OUT)
+$1_AROBJ := $($($1_C)_AROBJ)
+$1_SOURCES := $(shell find $(SRC_DIR) -name "*.$1" -not -name ".*")
+$1_DBG := $($($1_C)_DBG)
+$1_AR := $($($1_C)_AR)
+)
+# Find save language-specific driver and module sources and targets
+$(eval $1_DRV_SRC := $(filter $(DRIVER_DIR)/%,$($1_SOURCES)))
+$(eval $1_DRV_TRG := $(patsubst $(SRC_DIR)/%.$1,$(ROOT_DIR)/%$($1_OUT),$($1_DRV_SRC)))
+$(eval $1_MOD_SRC := $(filter-out $(DRIVER_DIR)/%,$($1_SOURCES)))
+$(eval $1_MOD_TRG := $(addsuffix .$($1_OBJ),$(basename $($1_MOD_SRC))))
+# Add those sources and targets to a language-irreverant var
+$(eval
+DRV_SRC += $($1_DRV_SRC)
+DRV_TRG += $($1_DRV_TRG)
+MOD_SRC += $($1_MOD_SRC)
+MOD_TRG += $($1_MOD_TRG)
+)\
+# First, initialize language-module, module, and language relative data. Then,
+# filter out each source file from the module and generate Dependency Rules and
+# Module Object Rules for each of them.
+$(foreach module,$(MODULES),
+# Evaluate the module sources for this language
+$(eval $(module)_$1_SRC := $(filter $(SRC_DIR)/$(module)/%,$($1_MOD_SRC)))
+# Evaluate module targets for this language
+$(eval $(module)_$1_TRG := $($(module)_$1_SRC:%.$1=%.$($1_OBJ)))
+# Add these language-specific sources and targets to the module's src/targs
+$(eval
+$(module)_SRC += $($(module)_$1_SRC)
+$(module)_TRG += $($(module)_$1_TRG)
+)
+# For every source file, create a build rule for it for our language
+$(foreach src,$(filter $(SRC_DIR)/$(module)/%,$($1_MOD_SRC)),\
+$(eval $(call SRC_LANG_RULE,$(src),$1))\
+))
+# For all the listed libraries, initialize the library, which will set up all of
+# its local ($1_LIBS, etc) data
+$(foreach lib,$($1_LIBS),\
+$(eval $(call LANG_LIB_INIT,$1,$(lib),$1)))
+# The initializer produces an ordered list of interlinked dependencies in groups
+# by depth, so when reading backwards and compressing repeats we are left with a
+# reliable build order for library interlinking. this awk program just looks
+# through a list of space separated words backwards failing to print when it
+# encounters a repeat
+$1_LIBS := $(shell echo "$($1_LIBS)" | $(call AWK_REVERSE_SQUASH))
+#/LANG_INIT######################################################################
+endef
+
+# The recursive library dependecy traversal constructs a tree ordered by nested
+# dependency depth. when linking, this order is reversed.
+# Initialize each language and look for its files
+$(eval $(foreach lang,$(LANGS),\
+$(eval $(call LANG_INIT,$(lang)))\
+$(eval $(lang)_LIBS := $(shell echo $($(lang)_LIBS) | $(call AWK_REVERSE_SQUASH)))\
+))
+
+# Create module object rules for each module
+$(foreach module,$(MODULES),\
+$(eval $(call MODULE_ARCRULE,$(module)))\
+)
+$(if $(c_DBG),$(eval MAKE_DIRS += .$(c_DBG)/))
+
+# Create lang-specific rules for producing final (linked) targets
+$(foreach lang,$(LANGS),\
+$(foreach drvsrc,$($(lang)_DRV_SRC),\
+$(eval $(call SRC_LANG_DRVRULE,$(drvsrc),$(lang)))\
+))
+
+# Create driver rules for each driver we found, let users call make specifying
+# the basename of the driver file, and just route to the correct linkrule we
+# made in the last paragraph
+DRV_FNAMES := $(notdir $(DRV_SRC))
+.PHONY: all $(basename $(DRV_NAMES))
+$(foreach fname,$(DRV_FNAMES),\
+$(eval $(basename $(fname)): \
+$(filter %/$(basename $(fname))$($(lastword $(subst ., ,$(fname))_OUT)),$(DRV_TRG)))\
+)
+all: $(basename $(DRV_FNAMES))
+ @echo Build Complete
+
+# Rule to make any dirs that we're in charge of
+$(sort $(MAKE_DIRS)):
+ @mkdir -p $@
+
+# Cleaning rules.
+# Clean destroys all object files and internal module archives.
+CLEAN_TARGETS := $(sort $(foreach mtarg,$(MAKE_TARGETS),$(if $(wildcard $(mtarg)),$(mtarg))))
+clean: $(BUILTLIBS:%=clean_%)
+ $(if $(CLEAN_TARGETS),rm $(CLEAN_TARGETS))
+
+# Scrub destroys all distributable binaries
+SCRUB_TARGETS := $(sort $(foreach starg,$(SCRUB_TARGETS),$(if $(wildcard $(starg)),$(starg))))
+scrub: clean
+ $(if $(SCRUB_TARGETS),rm $(SCRUB_TARGETS))
+
+# Purge destroys all distributables created by a distributable binary
+# (e.g. assets)
+
+# Uninstall destroys all objects and directories that cannot be recreated by
+# this make file
+uninstall: scrub
+ rm -Rf $(MAKE_DIRS)
projects / henge / webcc.git / commitdiff