src/Makefile

   1 ################################################################################
   2 # Desc:   Mihrtec Standard Transpilation Makefile
   3 # Author: Mihrtec LLC
   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 autopresidential debate california timematically compiled into an environment-dependent object
  10 # file of compiler-specific format (.o for gcc, .bc for llvm/emcc/em++).
  11 ################################################################################
  12 default: all
  13 # Source languages handled by this build system
  14 LANGS      := c cpp go
  15 # Source-to-source languages handled by this build system
  16 SLANGS     := y rl
  17 # Language-specific compilers and flags passed in from environment
  18 c_C        := $(strip $(notdir $(CC)))
  19 c_FLAGS    := $(strip $(CFLAGS)) -I.
  20 c_LIBS     := SDL2 wolfssl
  21 c_SRCL     := y
  22 cpp_C      := $(strip $(notdir $(CXX)))
  23 cpp_FLAGS  := $(strip $(CXXFLAGS)) $(c_FLAGS)
  24 cpp_LIBS   := $(c_LIBS)
  25 go_C       := gccgo
  26 go_FLAGS   := $(c_FLAGS)
  27 # Source to source languages
  28 # Bison
  29 y_C        := bison
  30 y_FLAGS    := -d
  31 y_STEM     := tab
  32 y_TRG      := c h
  33 # Ragel
  34 rl_C        := ragel
  35 rl_FLAGS    := -C
  36 rl_TRG      := c
  37 # Compiler-specific associations.  Each compiler has a binary object suffix
  38 # (OBJ), an archiver (AR), and an archiver object suffix (AROBJ).  Each compiler
  39 # may optionally have defined a linker (LD), and a binary output suffix (OUT).
  40 cc_OBJ     := o
  41 cc_LD      := $(LD)
  42 cc_AR      := $(AR)
  43 cc_AROBJ   := a
  44 cc_DBG     := gdb
  45 $(cpp_C)_LD := $(cc_LD)
  46 gcc_OBJ    := $(cc_OBJ)
  47 gcc_LD     := $(cc_LD)
  48 ngcc_AR     := $(cc_AR)
  49 gcc_AROBJ  := $(cc_AROBJ)
  50 gcc_DBG    := $(cc_DBG)
  51 emcc_OBJ   := bc
  52 emcc_AR    := emar
  53 emcc_AROBJ := $(emcc_OBJ) #emar is just a python script that reparses shit for emcc
  54 emcc_OUT   := .js
  55 g++_OBJ    := $(cc_OBJ)
  56 em++_OBJ   := $(emcc_OBJ)
  57 em++_AR    := $(emcc_AR)
  58 em++_AROBJ := $(emcc_AROBJ)
  59 em++_OUT   := $(emcc_OUT)
  60 gccgo_OBJ  := o
  61 gccgo_LD   := $(cc_LD)
  62 gccgo_AR   := $(cc_AR)
  63 gccgo_AROBJ := $(cc_AROBJ)
  64 # Shell functions to determine what libraries can be linked by the compiler
  65 cc_LDLIBS   := $(shell ls /usr/lib | grep ".o" | sed -e 's@^.*lib\([_\+a-zA-Z0-9\-]*\)\..*@\1@g')
  66 gcc_LDLIBS  := $(cc_LDLIBS)
  67 emcc_LDLIBS :=
  68 g++_LDLIBS  := $(cc_LDLIBS)
  69 em++_LDLIBS :=
  70 go_LDLIBS   := $(cc_LDLIBS)
  71 # Directories
  72 # The directory in './' containing app drivers and compilation info
  73 DRIVER_DIR := bin
  74 ROOT_DIR   := ..
  75 LIB_DIR    := $(ROOT_DIR)/lib$(shell uname -m)/$($(c_C)_OBJ)
  76 LIBDL_DIR  := $(LIB_DIR)/.cache
  77 LIBINC_DIR := $(ROOT_DIR)/include
  78 # The makefile MUST be capable of generating these directories and all of their
  79 # contents.  These directories are removed during the 'scrub' rule
  80 MAKE_DIRS  := $(LIB_DIR) $(LIBDL_DIR) $(LCLLIB_DIR)
  81 # Set up lib inclusions, and scan for built libs
  82 c_FLAGS    += -I$(LIBINC_DIR)
  83 c_OBJ      := $($(c_C)_OBJ)
  84 # Modules are any directories other than 'DRIVER_MODULE' in './' and produce a
  85 # single object file in './' containing all of the module's symbols and
  86 # binaries.
  87 MODULES    := $(filter-out $(DRIVER_DIR),$(subst /,,$(shell ls -d */)))
  88
  89 # The following awk program reverses the order of a list while also removing
  90 # duplicate entries.  The effect of this when run on the dependency tree is that
  91 # it will remove duplicates occurring in reverse order, allowing the most deeply
  92 # nested libraries to be built, and linked, first.
  93 define AWK_REVERSE_SQUASH =
  94 awk \
  95 '
  96 { for(i=NF;i>0;i--)
  97     printf (!a[$$i]++) ? $$i FS : "";
  98   i=split("",a);
  99   print ""
 100 }
 101 '
 102 endef
 103
 104 # Compile any source-to-source languages before executing the majority of make
 105 define PREMAKE_SOURCE_COMPILER =
 106 # Find the sources for each source-to-source language
 107 $(foreach slang,$(SLANGS),
 108 $(eval SLANG_SRC := $(patsubst ./%,%,$(shell find -name "*.$(slang)")))
 109 # Foreach target type in the source-to-source language, add this source's
 110 # targets to the list of the current source-to-source language targets
 111 $(foreach trg,$($(slang)_TRG),
 112 $(eval SLANG_TRG += $(SLANG_SRC:%.$(slang)=%.$($(slang)_STEM:%=%.)$(trg))))
 113 # Stat the source file's last-modified time to the var SRC_TIME
 114 $(foreach src,$(SLANG_SRC),
 115 $(eval SRC_TIME := $(shell stat -c %Y $(src)))
 116 # For each of the targets created by this source language, evaluate the
 117 # last-modified times of each potential target.  If the file does not exist, set
 118 # the time to '0', otherwise set it to the -c %Y result from statting the file.
 119 $(foreach srctrg,$(filter $(basename $(src))%, $(SLANG_TRG)),
 120 $(eval TRG_TIMES += $(if $(wildcard $(srctrg)),$(shell stat -c %Y $(srctrg)),0)==$(srctrg)))
 121 # Sort TRG_TIMES, which will produce a list of oldest-first files and timestamps
 122 # of the form [last-modified-deltatime]==[filename]
 123 $(eval TRG_TIMES := $(shell echo $(sort $(TRG_TIMES)) | $(call AWK_REVERSE_SQUASH)))
 124 # Evaluate the newest time from our ordered list by splitting the word up by its
 125 # '==' connectors and looking at the first word
 126 $(eval NEWEST_TRG_TIME := $(word 1,$(subst ==, ,$(TRG_TIMES))))
 127 # Find the older of the two times (between SRC_TIME and NEWEST_TRG_TIME)
 128 $(eval OLDER_TIME := $(firstword $(sort $(NEWEST_TRG_TIME) $(SRC_TIME))))
 129 # If the older of the two times is the newest target time found, then we need to
 130 # rebuild, but only if our build rule intends to actually make something
 131 $(if $(MAKECMDGOALS),
 132 $(eval BUILDGOALS := $(filter-out clean scrub purge uninstall,$(MAKECMDGOALS))),
 133 $(eval BUILDGOALS := all))
 134 $(if $(and $(BUILDGOALS),$(filter $(OLDER_TIME),$(NEWEST_TRG_TIME))),
 135 $(eval SHELL_CMD := cd $(dir $(src)) && $($(slang)_C) $($(slang)_FLAGS) $(notdir $(src)))
 136 $(info $(SHELL_CMD) $(shell $(SHELL_CMD)))
 137 )
 138 # Put these targets on the MAKE_TARGETS list to be removed during "clean",
 139 # regardless of whether or not they were built just now.
 140 $(eval MAKE_TARGETS += $(SLANG_TRG))
 141 ))
 142 endef
 143 # Compile a source language to a language that compiles to binary, but only if
 144 # our build rule intends to build some kind of target
 145 $(eval $(call PREMAKE_SOURCE_COMPILER,))
 146
 147
 148 # Backup the CVS password and CVSROOT environment vars in case we change them
 149 $(if $(wildcard ~/.cvspass),\
 150 $(eval CVSPASS_BAK := $(file <~/.cvspass)))
 151 $(if $(CVSROOT),\
 152 $(eval CVSROOT_BAK := $(CVSROOT)))
 153
 154 # A long function definition to grab deps from the source's compiler and route
 155 # errors to /dev/null if the rule generator expresses bogus errors
 156 define SRC_LANG_FLAGS_OPT_DEPS =
 157 $(filter-out \ %:,$(shell $($2_C) $3 $4 -MG $1 2> /dev/null))
 158 endef
 159
 160 # Given a source and a language, generate a rule to make the object.  The second
 161 # invocation of gcc per file lists only its local includes, and filters out
 162 # anything already caught.  Anything remaining should be considered to be
 163 # available in the current working directory of the source file(i.e. if you
 164 # '#include "something.h"' in 'mymodule/horseradish.c', you would expect to
 165 # include 'mymodule/something.h'.  this check lets that happen), otherwise it is
 166 # some kind of user error
 167 define SRC_LANG_RULE =
 168 $(if $($1),,$(eval $1 := t)\
 169 $(eval MOD  := $(filter $(MODULES),$(firstword $(subst /, ,$(dir $1)))))\
 170 $(eval FLG  := $($2_FLAGS) $(MOD:%=-I% ))\
 171 $(if $(wildcard $1),
 172 $(eval DEPS := $(filter-out \ %:,$(shell $($2_C) $(FLG) -M -MG $1)))\
 173 $(eval MDEPS := $(filter $(MODULES:%=%/%),$(DEPS)))\
 174 $(eval LOST := $(filter-out \ %: $(DRIVER_DIR)/% $(MODULES:%=%/%),$(shell $($2_C) $(FLG) -MM -MG $1)))\
 175 $(eval MDEPS += $(LOST:%=$(dir $1)%))\
 176 $(eval MDEPS := $(shell echo $(MDEPS) | sed -e 's@[a-zA-Z0-9\-\+/]*\.\./include@../include@g'))\
 177 $(eval ALLDEPS := $(MDEPS) $(DEPS)),\
 178 $(error Cannot generate deps for: $1, file not found))\
 179 $(eval SRC_OBJ    := $(basename $1).$($2_OBJ))\
 180 $(eval MAKE_TARGETS += $(SRC_OBJ))\
 181
 182 # Object for $1
 183 $(SRC_OBJ): $(ALLDEPS)
 184         $($2_C) $$($2_FLAGS) $(FLG) -c -o $$@ $1
 185 $(if $($2_DBG),\
 186 $(eval DBG_OBJ    := $(dir $1).$($2_DBG)/$(basename $(notdir $1)).$($2_OBJ))\
 187 $(if $(findstring $(dir $(DBG_OBJ)),$(MAKE_DIRS)),,\
 188 $(eval MAKE_DIRS += $(dir $(DBG_OBJ))))
 189 # Object for $1 with $($2_DBG) symbols
 190 $(DBG_OBJ): $(ALLDEPS) | $(dir $(DBG_OBJ))
 191         $($2_C) $$($2_FLAGS) $(FLG) -Og -g$($2_DBG) -c -o $$@ $1
 192 ))
 193 endef
 194
 195 # establish a build and link rule given a source driver and language ############
 196 define SRC_LANG_DRVRULE =
 197 $(eval DRIVER_NAME  := $(basename $(notdir $1)))
 198 $(eval DRIVER_TARG  := $(1:%.$2=$(ROOT_DIR)/%$($2_OUT)))
 199 $(eval DRIVER_SOB   := $(basename $1).$($2_OBJ))
 200
 201 # Generate a rule for the driver object
 202 $(eval $(call SRC_LANG_RULE,$1,$2))
 203
 204 # Modules can be implicitly specified by a driver if its dependencies include
 205 # ANY files from any module directory.  The 'MDEPS' var is set by SRC_LANG_RULE
 206 # and expresses the dependencies required to build the object file only.
 207 $(foreach module_dep,$(MDEPS),
 208 $(eval DRIVER_MODULES += $(firstword $(subst /, ,$(module_dep))))
 209 )
 210 $(eval DRIVER_MODULES := $(filter-out $(DRIVER_DIR) ..,$(sort $(DRIVER_MODULES))))
 211
 212 # In the event that the driver developer does not wish to include a header to
 213 # any internal modules, the developer may instead create a file with the same
 214 # basename as the driver, but with the '.ld' suffix, which contains a space
 215 # separated list of internal modules to link together during compilation
 216 $(eval DRIVER_MODULES += $(file <$(1:%.$2=%.ld)))
 217
 218 # List of module archives to link together during compilation
 219 $(eval DRIVER_ARCHIVES    := $(DRIVER_MODULES:%=%.$($2_AROBJ)))
 220 $(eval DRIVER_DEPS        := $(DRIVER_SOB) $(DRIVER_ARCHIVES))
 221 $(eval DRIVER_DBGARCHIVES := $(DRIVER_MODULES:%=.$($2_DBG)/%.$($2_AROBJ)))
 222 $(eval DRIVER_DBGDEPS     := $(dir $(DRIVER_SOB)).$($2_DBG)/$(notdir $(DRIVER_SOB)))
 223 $(eval DRIVER_DBGDEPS     += $(DRIVER_DBGARCHIVES))
 224
 225 # If the compiler supports linking, distinguish static from dynamic links,
 226 # otherwise set all libraries to static
 227 $(if $($($2_C)_LD),\
 228 $(eval STLIBS   := $(filter-out $($($2_C)_LDLIBS),$($2_LIBS)))\
 229 $(eval DLIBS    := $(filter-out $(STLIBS),$($2_LIBS))),\
 230 $(eval STLIBS   := $($2_LIBS)))
 231
 232 # Directory setup
 233 $(eval DRIVER_TARG_DIR := $(dir $(1:%.$2=$(ROOT_DIR)/%)))
 234 $(eval MAKE_DIRS       += $(DRIVER_TARG_DIR))
 235 $(if $($2_DBG),$(eval MAKE_DIRS += $(DRIVER_TARG_DIR).$($2_DBG)))
 236
 237 # Setup the sources for this object.  A driver build rule does not include any
 238 # compile steps at all, and so should not contain any sources that are,
 239 # themselves, traditional "source files" like a language-compiled 'c' file.  The
 240 # driver depends on the existence of its equivalent object file (created through
 241 # compilation), which is expected to contain a 'main' function (or entry for
 242 # '_start').  This driver object is then simply linked to its libraries and
 243 # module archives to create an executable binary in the output folder.
 244 # ORDER MATTERS HERE, this is for the linker:
 245 $(eval DRIVER_SRC  := $(DRIVER_DEPS))
 246 $(eval DRIVER_DBGSRC := $(DRIVER_DBGDEPS))
 247 # Iterate through the list of libraries in our language and stack commands from
 248 # left to right in the "sources" section of the LD command (or LD section of the
 249 # commandline for the compiler), to preserve ordering and also ensure that it is
 250 # linked correctly IN THAT ORDER (static vs dynamic).
 251 $(foreach lib,$($2_LIBS),\
 252 $(if $(findstring $(lib),$(STLIBS)),
 253 # Evaluate static lib $(lib) and add it to the dependencies and sources of the rules we built
 254 $(eval STATIC_SRC      := $(LIB_DIR)/lib$(lib).$($2_AROBJ))\
 255 $(eval STATIC_DBGSRC   := $(LIB_DIR)/.$($2_DBG)/lib$(lib).$($2_AROBJ))\
 256 $(eval DRIVER_SRC      := $(STATIC_SRC) $(DRIVER_SRC))\
 257 $(eval DRIVER_DBGSRC   := $(STATIC_DBGSRC) $(DRIVER_DBGSRC))\
 258 $(eval DRIVER_DEPS     += $(STATIC_SRC))\
 259 $(eval DRIVER_DBGDEPS  += $(STATIC_DBGSRC)),
 260 # Add dynamic lib to the sources with a link flag, in its correct ordering
 261 $(eval DRIVER_SRC := -l$(lib) $(DRIVER_SRC))\
 262 $(eval DRIVER_DBGSRC := -l$(lib) $(DRIVER_DBGSRC))\
 263 ))
 264
 265 # Add the driver target to this language's targets for cleaning
 266 $(eval SCRUB_TARGETS  += $(DRIVER_TARG))
 267 $(DRIVER_TARG): $(DRIVER_DEPS) | $(DRIVER_TARG_DIR)
 268         $($2_C) $($2_FLAGS) $(DRIVER_SRC) -o $$@
 269 # Output a rule for building with debug flags
 270 $(eval DRIVER_DBGTARG := $(DRIVER_TARG_DIR)$(basename $(notdir $(DRIVER_TARG)))-d$($2_OUT))
 271 $(eval SCRUB_TARGETS  += $(DRIVER_DBGTARG))
 272 $(eval MAKE_DIRS += $(DRIVER_TARG_DIR).$($2_DBG)/)
 273 $(DRIVER_DBGTARG): $(DRIVER_DBGDEPS) | $(DRIVER_TARG_DIR)
 274         $($2_C) $($2_FLAGS) $(DRIVER_DBGSRC) -o $$@
 275 # Make a rule to run this driver after building
 276 $(DRIVER_NAME)-run: $(DRIVER_TARG)
 277         $(DRIVER_TARG)
 278 $(DRIVER_NAME)-d: $(DRIVER_DBGTARG)
 279
 280 #/SRC_LANG_DRVRULE##############################################################
 281 endef
 282
 283 # generate rule for turning an entire module's collection of binary objects into
 284 # a single locally-linked (no external -L libs) object (for simplified linking
 285 # modules as static libs).
 286 define MODULE_ARCRULE =
 287 $(eval ARCDEPS := $(filter $1/%.$(c_OBJ),$(foreach lang,$(LANGS),$($(lang)_MOD_TRG))))\
 288 $(eval MAKE_TARGETS += $1.$(c_AROBJ))\
 289 $1.$(c_AROBJ): $(ARCDEPS)
 290         $(c_AR) cr $$@ $$^
 291 $(if $(c_DBG),
 292 $(eval undefine DBGARCDEPS)
 293 $(foreach arcdep,$(ARCDEPS),$(eval DBGARCDEPS += $(dir $(arcdep)).$(c_DBG)/$(notdir $(arcdep))))
 294 $(eval MAKE_TARGETS += .$(c_DBG)/$1.$(c_AROBJ))\
 295
 296 .$(c_DBG)/$1.$(c_AROBJ): $(DBGARCDEPS) | .$(c_DBG)/
 297         $(c_AR) cr $$@ $$^
 298 )
 299 endef
 300
 301 # LANG_LIB_PARENT_BUILDRULE######################################################
 302 # define rules for creating unknown libraries in the local build environment for
 303 # either binary or bytecode representation given a library name and, optionally,
 304 # a parent lib that included it for error reporting #############################
 305 define LANG_LIB_PARENT_BUILDRULE =
 306 $(eval CONF_FLAG := --prefix=$(abspath $(LIB_DIR)).trash)
 307 $(eval CONF_FLAG += --includedir=$(abspath $(LIBINC_DIR)))
 308 # Setup installation rule steps for this lib
 309 $(eval
 310 BUILDSTEPS := $(if $(AUTOGEN),$(AUTOGEN) && )
 311 BUILDSTEPS += $(if $(CONFIGURE),$(CONFIGURE) $(CONF_FLAG) --libdir=$(abspath $(LIB_DIR)) && )
 312 $(if $(MKCMD),\
 313 BUILDSTEPS += $(MKCMD),
 314 $(error $2.mk requires a valid MKCMD definition))
 315 $(if $(MKINSTALL),\
 316 INSTALLCMD := $(MKINSTALL),\
 317 $(error $2.mk requires a valid MKINSTALL definition))
 318 CLEANCMD   := $(MKCLEAN)
 319 )
 320 # Construct the download method, or error if there isn't a valid one
 321 $(if $(GITADDR),$(eval LIBDL := git clone $(GITADDR) $2),\
 322 $(if $(HGADDR),$(eval LIBDL  := hg clone $(HGADDR) $2),\
 323 $(if $(CVSADDR),\
 324 $(eval LIBDL := export CVSROOT=$(CVSADDR))\
 325 $(eval LIBDL += && echo '$(CVSPASS)' > ~/.cvspass)\
 326 $(eval LIBDL += && cvs $($2_CVSGET))
 327 $(eval LIBDL += && $(if $(CVSPASS_BAK),echo $(CVSPASS_BAK) > ~/.cvspass,rm ~/.cvspass)),\
 328 $(if $(WEBADDR),$(eval LIBDL := wget -O $(WEBTARG) $(WEBADDR)),\
 329 $(eval $(error No way to download $2 needed by $3 for $1 language ))))))
 330 # '$2' Download Rule
 331 $(LIBDL_DIR)/$2:
 332         mkdir -p $$@
 333         cd $(LIBDL_DIR) && $(LIBDL) $(if $(WEBINIT),&& $(WEBINIT))
 334 # '$2' Make and install rule, and ensure it isn't marked "clean"
 335 $(LIB_DIR)/lib$2.$($1_AROBJ): $(LIBDEPS:%=$(LIB_DIR)/lib%.$($1_AROBJ)) | $(LIBDL_DIR)/$2
 336         @mkdir -p $(LIB_DIR)
 337         cd $(LIBDL_DIR)/$2 && export LD_RUN_PATH=$(LIBLDPATH) && $(BUILDSTEPS)
 338         cd $(LIBDL_DIR)/$2 && $(INSTALLCMD)
 339         @rm -f $(LIBDL_DIR)/$2.clean
 340
 341 # '$2' Rule for building under debug mode
 342 $(if $($1_DBG),\
 343 $(eval LIBDBG_DIR := $(LIB_DIR)/.$($1_DBG))\
 344 $(eval $(if $(findstring $(LIBDBG_DIR),$(MAKE_DIRS)),,MAKE_DIRS += $(LIBDBG_DIR)))\
 345 $(eval LIBDBG_TARG := $(LIBDBG_DIR)/lib$2.$($1_AROBJ))\
 346 $(eval LIBDBG_DEPS := $(LIBDEPS:%=$(LIB_DIR)/.$($1_DBG)/lib%.$($1_AROBJ)))\
 347 $(eval DBGBUILDSTEPS := $(if $(AUTOGEN),$(if $(AUTOGENDBG),$(AUTOGENDBG),$(AUTOGEN)) && ))\
 348 $(eval DBGBUILDSTEPS += $(if $(CONFIGURE),$(if $(CONFIGUREDBG),$(CONFIGUREDBG),$(CONFIGURE)) $(CONF_FLAG) --libdir=$(abspath $(LIB_DIR))/.$($1_DBG)))\
 349 $(eval DBGBUILDSTEPS += $(if $(MKDBGCMD),$(MKDBGCDM),$(MKCMD)))\
 350
 351 # '$2' Make and install rule for debugging
 352 $(LIBDBG_TARG): $(LIBDBG_DEPS) | $(LIBDL_DIR)
 353         @mkdir -p $(LIBDBG_DIR)
 354         cd $(LIBDL_DIR)/$2 && export LD_RUN_PATH=$(LIBLDPATH:$(LIB_DIR)%=$(LIBDBG_DIR)) && $(DBGBUILDSTEPS)
 355         cd $(LIBDL_DIR)/$2 && $(INSTALLCMD)
 356         @rm -f $(LIBDL_DIR)/$2.clean
 357 )
 358
 359 # '$2' Clean rule - drop a marker in the directory so we don't bother cleaning
 360 # things that are clean... by default there is no real way of tracking this in a
 361 # makefile
 362 clean_$2:
 363         $$(if $$(wildcard $(LIBDL_DIR)/$2),$$(if $$(wildcard $(LIBDL_DIR)/$2.clean),,\
 364         cd $(LIBDL_DIR)/$2 && $(CLEANCMD) && touch $(abspath $(LIBDL_DIR))/$2.clean))
 365
 366 #/LANG_LIB_PARENT_BUILDRULE######################################################
 367 endef
 368
 369
 370 #LANG_LIB_INIT###################################################################
 371 # For every library in this language, we need to determine how, and if, to link
 372 # its data.  This could potentially be done recursively as libraries have
 373 # dependencies upon each other.  We call a recursive macro here to expand out
 374 # all the libs for this language, and then flatten the tree by removing
 375 # duplicates with shell commands.  We can't use make's 'sort' function because
 376 # we actually care about the ordering so that interdependent libraries can link
 377 # back up the tree ##############################################################
 378 define LANG_LIB_INIT =
 379 # Initialize per-library data, then import data from an accompanying file that
 380 # can overwrite these vars
 381 $(eval
 382 # Implicit defaults for lib.mk files
 383 AUTOGEN    := ./autogen.sh
 384 AUTOGENDBG := ./autogen.sh --enable-debug
 385 CONFIGURE  := ./configure
 386 MKCMD      := make -k
 387 MKINSTALL  := make -k install
 388 MKCLEAN    := make clean
 389 MKDBGCMD   := make -k
 390 LIBDEPS    :=
 391 LIBLANGS   := c cpp go
 392 LIBLDPATH  := $(if $($($1_C)_LD),$(if $(LD_LIBRARY_PATH),$(LD_LIBRARY_PATH):,/usr/lib:)$(abspath $(LIB_DIR)))
 393 # One of these must be defined in the .mk file imported
 394 $(foreach var, GITADDR WEBADDR HGADDR CVSADDR,\
 395 $(eval undefine $(var)))
 396 # Other, optional, variables to clear
 397 $(foreach var, WEBTARG WEBINIT CVSGET CVSPASS CONFIGUREDBG,
 398 $(eval undefine $(var)))
 399 )
 400 # Include and evaluate such that it may be called and evaluated for immediate
 401 # evaluation of its contents
 402 define EVALINCLUDE =
 403 $(eval include $2.mk)
 404 endef
 405 # If there is a .mk file for this lib, import it.  Otherwise, we'll try to link
 406 # it later, unless there is no linker for the language's compiler.
 407 $(if $(wildcard $2.mk),$(eval $(file <$2.mk)),\
 408 $(if $($($1_C)_LD),\
 409 $(warning No $2.mk for lib$2, attempting to link from the system),\
 410 $(error No $2.mk for lib$2 and '$($1_C)' is not configured for linking)))\
 411
 412 # Add dependencies we found (potentially recursively, ignore repeats until later
 413 # so we can preserve ordering information for interdependency build ordering)
 414 $(if $(LIBDEPS),\
 415 $(eval $1_LIBS += $(LIBDEPS)))
 416 # languages that can link this library (typically any lang that shares the
 417 # object format (ELF by default, but this is compiler-dependent (e.g. emcc uses
 418 # llvm bitcode, which is just an intermediary representation of data that can
 419 # link to anything else statically, or as an archive)))
 420 $(if $(findstring $1,$(LIBLANGS)),,\
 421 $(error $2.mk must specifically set LIBLANGS := $1 if it is compatible with $1))
 422 # Mark this lib as available for all its other compatible languages.  This list
 423 # is assumed to be sorted later, so we will ignore repeats for speed
 424 $(foreach lang,$(LIBLANGS),\
 425 $(if $(findstring $2,$($(lang)_LIBS)),,\
 426 $(eval $(lang)_LIBS += $2)))
 427 # Generate a build rule for this lib, unless it's already built
 428 $(if $(findstring $2,$(BUILTLIBS)),,\
 429 $(eval $(call LANG_LIB_PARENT_BUILDRULE,$1,$2,$3))\
 430 $(eval BUILTLIBS += $2))
 431 # Recurse this function for every libdep encountered
 432 $(foreach libdep,$(LIBDEPS),\
 433 $(call LANG_LIB_INIT,$1,$(libdep),$2))
 434 #/LANG_LIB_INIT#################################################################
 435 endef
 436
 437 # Initialize data for supported lanaguages ######################################
 438 define LANG_INIT =
 439 $(eval
 440 $1_OBJ     := $($($1_C)_OBJ)
 441 $1_OUT     := $($($1_C)_OUT)
 442 $1_AROBJ   := $($($1_C)_AROBJ)
 443 $1_SOURCES := $(subst ./,,$(shell find -name "*.$1"))
 444 $1_DBG     := $($($1_C)_DBG)
 445 $1_AR      := $($($1_C)_AR)
 446 )
 447 # Find save language-specific driver and module sources and targets
 448 $(eval $1_DRV_SRC := $(filter $(DRIVER_DIR)/%,$($1_SOURCES)))
 449 $(eval $1_DRV_TRG := $(patsubst %.$1,$(ROOT_DIR)/%$($1_OUT),$($1_DRV_SRC)))
 450 $(eval $1_MOD_SRC := $(filter-out $(DRIVER_DIR)/%,$($1_SOURCES)))
 451 $(eval $1_MOD_TRG := $(subst .$1,.$($1_OBJ),$($1_MOD_SRC)))
 452 # Add those sources and targets to a language-irreverant var
 453 $(eval
 454 DRV_SRC    += $($1_DRV_SRC)
 455 DRV_TRG    += $($1_DRV_TRG)
 456 MOD_SRC    += $($1_MOD_SRC)
 457 MOD_TRG    += $($1_MOD_TRG)
 458 )\
 459 # First, initialize language-module, module, and language relative data.  Then,
 460 # filter out each source file from the module and generate Dependency Rules and
 461 # Module Object Rules for each of them.
 462 $(foreach module,$(MODULES),
 463 # Evaluate the module sources for this language
 464 $(eval $(module)_$1_SRC := $(filter $(module)/%,$($1_MOD_SRC)))
 465 # Evaluate module targets for this language
 466 $(eval $(module)_$1_TRG := $($(module)_$1_SRC:%.$1=%.$($1_OBJ)))
 467 # Add these language-specific sources and targets to the module's src/targs
 468 $(eval
 469 $(module)_SRC += $($(module)_$1_SRC)
 470 $(module)_TRG += $($(module)_$1_TRG)
 471 )
 472 # For every source file, create a build rule for it for our language
 473 $(foreach src,$(filter $(module)/%,$($1_MOD_SRC)),\
 474 $(eval $(call SRC_LANG_RULE,$(src),$1))\
 475 ))
 476 # For all the listed libraries, initialize the library, which will set up all of
 477 # its local ($1_LIBS, etc) data
 478 $(foreach lib,$($1_LIBS),\
 479 $(eval $(call LANG_LIB_INIT,$1,$(lib),$1)))
 480 # The initializer produces an ordered list of interlinked dependencies in groups
 481 # by depth, so when reading backwards and compressing repeats we are left with a
 482 # reliable build order for library interlinking.  this awk program just looks
 483 # through a list of space separated words backwards failing to print when it
 484 # encounters a repeat
 485 $1_LIBS := $(shell echo "$($1_LIBS)" | $(call AWK_REVERSE_SQUASH))
 486 #/LANG_INIT######################################################################
 487 endef
 488
 489 # The recursive library dependecy traversal constructs a tree ordered by nested
 490 # dependency depth.  when linking, this order is reversed.
 491 # Initialize each language and look for its files
 492 $(eval $(foreach lang,$(LANGS),\
 493 $(eval $(call LANG_INIT,$(lang)))\
 494 $(eval $(lang)_LIBS := $(shell echo $($(lang)_LIBS) | $(call AWK_REVERSE_SQUASH)))\
 495 ))
 496
 497 # Create module object rules for each module
 498 $(foreach module,$(MODULES),\
 499 $(eval $(call MODULE_ARCRULE,$(module)))\
 500 )
 501 $(if $(c_DBG),$(eval MAKE_DIRS += .$(c_DBG)/))
 502
 503 # Create lang-specific rules for producing final (linked) targets
 504 $(foreach lang,$(LANGS),\
 505 $(foreach drvsrc,$($(lang)_DRV_SRC),\
 506 $(eval $(call SRC_LANG_DRVRULE,$(drvsrc),$(lang)))\
 507 ))
 508
 509 # Create driver rules for each driver we found, let users call make specifying
 510 # the basename of the driver file, and just route to the correct linkrule we
 511 # made in the last paragraph
 512 DRV_FNAMES := $(notdir $(DRV_SRC))
 513 .PHONY: all $(basename $(DRV_NAMES))
 514 $(foreach fname,$(DRV_FNAMES),\
 515 $(eval $(basename $(fname)): \
 516 $(filter %/$(basename $(fname))$($(lastword $(subst ., ,$(fname))_OUT)),$(DRV_TRG)))\
 517 )
 518 all: $(basename $(DRV_FNAMES))
 519         @echo Build Complete
 520
 521 # Rule to make any dirs that we're in charge of
 522 $(MAKE_DIRS):
 523         @mkdir -p $@
 524
 525 # Cleaning rules.
 526 # Clean destroys all object files and internal module archives.
 527 CLEAN_TARGETS := $(sort $(foreach mtarg,$(MAKE_TARGETS),$(if $(wildcard $(mtarg)),$(mtarg))))
 528 clean: $(BUILTLIBS:%=clean_%)
 529         $(if $(CLEAN_TARGETS),rm $(CLEAN_TARGETS))
 530
 531 # Scrub destroys all distributable binaries
 532 SCRUB_TARGETS := $(sort $(foreach starg,$(SCRUB_TARGETS),$(if $(wildcard $(starg)),$(starg))))
 533 scrub: clean
 534         $(if $(SCRUB_TARGETS),rm $(SCRUB_TARGETS))
 535
 536 # Purge destroys all distributables created by a distributable binary
 537 # (e.g. assets)
 538
 539 # Uninstall destroys all objects and directories that cannot be recreated by
 540 # this make file
 541 uninstall: scrub
 542         rm -Rf $(MAKE_DIRS)