Lady’s Gitweb - Shushe/blob - GNUmakefile

   1 SHELL = /bin/sh
   2
   3 # ━ § BASIC INFORMATION ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   4 override define makefileinfo
   5  ╭────────────────────────────╮
   6 ╔╡ ⁌ ⛩️📰 书社 ∷ GNUmakefile ╞════════════════════════════════╗
   7 ║╰────────────────────────────╯                                ║
   8 ╟┬ ¶ Prerequisites ───────────────────────────────────────────┬╢
   9 ║│                                                            │║
  10 ║│ Requires G·N·U Make, at least version 3.81, a version of   │║
  11 ║│ uuencode with base64 support, and the various programs     │║
  12 ║│ offered by libxml2 and libxslt. Beyond this, only programs │║
  13 ║│ required by Posix are required, altho there is a chance of │║
  14 ║│ version incompatibilities. The full list of program        │║
  15 ║│ requirements is as follows :—                             │║
  16 ║│                                                            │║
  17 ║│ • awk                                                      │║
  18 ║│ • cat                                                      │║
  19 ║│ • cp                                                       │║
  20 ║│ • date                                                     │║
  21 ║│ • echo                                                     │║
  22 ║│ • file                                                     │║
  23 ║│ • find                                                     │║
  24 ║│ • git (optional)                                           │║
  25 ║│ • mkdir (requires support for `-p´)                        │║
  26 ║│ • mv                                                       │║
  27 ║│ • od (requires support for `-t x1´)                        │║
  28 ║│ • printf                                                   │║
  29 ║│ • rm                                                       │║
  30 ║│ • sed                                                      │║
  31 ║│ • sleep                                                    │║
  32 ║│ • stat                                                     │║
  33 ║│ • test                                                     │║
  34 ║│ • touch                                                    │║
  35 ║│ • tr (requires support for `-d´)                           │║
  36 ║│ • uuencode (requires support for `-m´ and `-r´)            │║
  37 ║│ • xargs (requires support for `-0´)                        │║
  38 ║│ • xmlcatalog (provided by libxml2)                         │║
  39 ║│ • xmllint (provided by libxml2)                            │║
  40 ║│ • xsltproc (provided by libxslt)                           │║
  41 ║│                                                            │║
  42 ║│ In all cases, you can supply your own version of any       │║
  43 ║│ program `program´ by overriding the corresponding variable │║
  44 ║│ `PROGRAM´ when calling Make.                               │║
  45 ║╰────────────────────────────────────────────────────────────╯║
  46 ╟┬ ¶ Usage ───────────────────────────────────────────────────┬╢
  47 ║│                                                            │║
  48 ║│ • `make all´: Compile, but do not install, all files.      │║
  49 ║│                                                            │║
  50 ║│ • `make clean´: Remove `BUILDDIR´.                         │║
  51 ║│                                                            │║
  52 ║│ • `make gone´: Remove `BUILDDIR´ and installed files.      │║
  53 ║│                                                            │║
  54 ║│ • `make help´ (default): Print this message.               │║
  55 ║│                                                            │║
  56 ║│ • `make install´: Compile all files and install in         │║
  57 ║│   `DESTDIR´.                                               │║
  58 ║│                                                            │║
  59 ║│ • `make list´: List all recognized source files and their  │║
  60 ║│   classification (including media type and dependencies).  │║
  61 ║│                                                            │║
  62 ║│ • `make uninstall´: Remove installed files, but not        │║
  63 ║│   `BUILDDIR´.                                              │║
  64 ║│                                                            │║
  65 ║│ Set `VERBOSE=1´ to see the text of commands as they are    │║
  66 ║│ executed.                                                  │║
  67 ║│                                                            │║
  68 ║│ See `README.markdown´ for a more involved description of   │║
  69 ║│ the capabilities and configuration of this program.        │║
  70 ║╰────────────────────────────────────────────────────────────╯║
  71 ╟┬ ¶ Copyright & License ─────────────────────────────────────┬╢
  72 ║│                                                            │║
  73 ║│ Copyright © 2023–2024 Lady [@ Lady’s Computer].            │║
  74 ║│                                                            │║
  75 ║│ This Source Code Form is subject to the terms of the       │║
  76 ║│ Mozilla Public License, v 2.0. If a copy of the M·P·L was  │║
  77 ║│ not distributed with this file, You can obtain one at      │║
  78 ║│ <http://mozilla.org/MPL/2.0/>.                             │║
  79 ║╰────────────────────────────────────────────────────────────╯║
  80 ╚══════════════════════════════════════════════════════════════╝
  81 endef
  82
  83 # ━ § MAKE·FILE SETUP ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  84
  85 # Programs needed to run this make·file.
  86 #
  87 # If these are not installed on your computer, or you need to use a different implementation, you can override the appropriate variable.
  88 AWK := awk
  89 CAT := cat
  90 CP := cp
  91 DATE := date
  92 ECHO := echo
  93 FILE := file
  94 FIND := find
  95 GIT := git
  96 MKDIR := mkdir
  97 MV := mv
  98 OD := od
  99 PRINTF := printf
 100 RM := rm
 101 SED := sed
 102 SLEEP := sleep
 103 STAT := stat
 104 TEST := test
 105 TOUCH := touch
 106 TR := tr
 107 UUENCODE := uuencode
 108 XARGS := xargs
 109 XMLCATALOG := xmlcatalog
 110 XMLLINT := xmllint
 111 XSLTPROC := xsltproc
 112
 113 # The directory which contains the source files.
 114 #
 115 # Multiple directories can be given so long as files with the same name do not exist in each.
 116 SRCDIR := sources
 117
 118 # The directory which contains “includes”:
 119 # Files which may be included in other files but for which no final output will be generated.
 120 #
 121 # Multiple directories can be given so long as files with the same name do not exist in each.
 122 #
 123 # These can be inside of `SRCDIR´ directories if desired.
 124 INCLUDEDIR := sources/includes
 125
 126 # The directory in which to generate temporary buildfiles.
 127 BUILDDIR := build
 128
 129 # The directory into which to output files on `make install´.
 130 DESTDIR := public
 131
 132 # The location of this Makefile (and related ⛩️📰 书社 files), relative to the current working directory.
 133 #
 134 # By default, this is inferred from the variable `MAKEFILE_LIST´.
 135 THISDIR := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
 136
 137 # The location of the magic files to use when determining media types.
 138 #
 139 # One is provided as part of this repository, but you can override it if you need different media type detection.
 140 #
 141 # Your computer probably has a more comprehensive one installed at `/usr/share/file/magic´, but it is not recommended that you use this directly.
 142 # Instead, link or copy just the files you expect to need for your project.
 143 MAGICDIR := $(patsubst ./%,%,$(THISDIR)/magic)
 144
 145 # Configuration of `find´.
 146 #
 147 # By default, `find´ will ignore files which begin with a period and those which are likely to cause problems for `make´.
 148 EXTRAFINDRULES :=
 149 EXTRAFINDINCLUDERULES :=
 150 FINDRULES := ! '(' '(' -name '[.-]*' -o -name '*[][*?:|$$%\#\\; ]*' ')' -a -prune ')'$(if $(EXTRAFINDRULES), -a $(EXTRAFINDRULES),)
 151 FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a $(EXTRAFINDINCLUDERULES),)
 152
 153 # The list of parsers for plaintext file types.
 154 #
 155 # Which parsers are provided will influence which kinds of files are recognized as plaintext.
 156 EXTRAPARSERS :=
 157 PARSERS := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/parsers/*.xslt)) $(EXTRAPARSERS))
 158
 159 # The list of transforms.
 160 EXTRATRANSFORMS :=
 161 TRANSFORMS := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/transforms/*.xslt)) $(EXTRATRANSFORMS))
 162
 163 # List of types which should be treated as X·M·L.
 164 XMLTYPES := application/xml text/xml
 165
 166 # Set to a non·empty value to print all commands as they run.
 167 VERBOSE :=
 168
 169 # The default target for this makefile.
 170 #
 171 # Print help and exit.
 172 .DEFAULT_GOAL := help
 173
 174 # ━ § BEGIN MAKE·FILE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 175
 176 # ─ ¶ Non‐Recipe Variable Definitions ─────────────────────────────────
 177
 178 # A variable with no value, usable when assigning values which contain whitespace.
 179 override empty :=
 180
 181 # A variable which contains a newline, to allow the generation of multiline strings in function calls.
 182 override define newline
 183
 184
 185 endef
 186
 187 # A variable which contains a single space.
 188 override space := $(empty) $(empty)
 189
 190 # A variable which contains a single comma.
 191 override comma := ,
 192
 193 # (callable) Quote the given string for use within shell calls.
 194 override quote = '$(subst ','"'"',$1)'
 195
 196 # Outputs an `@´ to silence rules, unless `VERBOSE´ is nonempty.
 197 override silent := $(if $(VERBOSE),,@)
 198
 199 # (callable) Escape special characters for use in sed regular expressions.
 200 override sedesc = $(subst /,[/],$(subst $$,\$$,$(subst *,\*,$(subst .,\.,$(subst [,\[,$(subst ^,\^,$(subst \,\\,$1)))))))
 201
 202 # (callable) Percent‐decode the given strings.
 203 override perdec = $(foreach encoded,$1,$(shell $(PRINTF) '%s\n' $(call quote,$(encoded)) | $(SED) 's/|/%7C/g;s/[\]/%5C/g;s/%[0-9A-Fa-f]\{2\}/|&|/g' | $(TR) '|' '\n' | $(SED) '/^%[0-9A-Fa-f]\{2\}$$/!s/%/|%25|/' | $(TR) '|' '\n' | $(AWK) '$$0!~/%/{printf("%s",$$0)}/%/{sub("%","0x");printf("\\%04o",$$0)}' | $(XARGS) -0 $(PRINTF) '%b'))
 204
 205 # (callable) Percent‐encode the given strings.
 206 #
 207 # This singly‐encodes u·r·i characters and doubly‐encodes other characters, then calls `perdec´ to decode back to a single encoding.
 208 # The encoding assumes the input is a “u·r·i component”; e·g that the resulting string should only contain `pchar´ (but can contain any `sub-delim´).
 209 override perenc = $(foreach unencoded,$1,$(call perdec,$(shell $(PRINTF) '%s' $(call quote,$(unencoded)) | $(OD) -t x1 | $(SED) 's/^[0-9]*//;s/2[146-9A-Ea-e]/%&/g;s/3[0-9AaBbDd]/%&/g;s/40/%&/g;s/[46][1-9A-Fa-f]/%&/g;s/[57][0-9Aa]/%&/g;s/5[Ff]/%&/g;s/7[Ee]/%&/g;s/[ ][0-9A-Fa-f]\{2\}/%25&/g' | $(TR) -d ' \n' | $(TR) 'abcdef' 'ABCDEF')))
 210
 211 # (callable) Percent‐encode each component in the given paths.
 212 #
 213 # ☡ This will remove leading and trailing slashes.
 214 override pathenc = $(foreach path,$1,$(subst $(space),/,$(call perenc,$(subst /, ,$(path)))))
 215
 216 # (overridable) Collect all of the applicable includes from the includes directory.
 217 sourceincludes := $(shell $(FIND) $(foreach dir,$(INCLUDEDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f)
 218
 219 # (overridable) Collect all of the applicable source files from the source directory, removing any which are also includes.
 220 sourcefiles := $(filter-out $(sourceincludes),$(shell $(FIND) $(foreach dir,$(SRCDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f))
 221
 222 ifdef GIT
 223 ifneq ($(wildcard $(THISDIR)/.git),)
 224 # (overridable) The name of the current revision of ⛩️📰 书社, or its hash if the current revision is not a tag.
 225 thisrev = $(shell cd $(THISDIR); $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD 2> /dev/null || true)
 226 endif
 227
 228 ifneq ($(wildcard .git),)
 229 # (overridable) The name of the current revision of the working directory, or its hash if the current revision is not a tag.
 230 srcrev = $(shell $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD 2> /dev/null || true)
 231 endif
 232 endif
 233
 234 # Figure out the file type of each source file and source include.
 235 ifneq ($(wildcard $(BUILDDIR)/magic.mgc),)
 236 override types := $(shell $(SED) 's/^ *//;s/ *$$//;s/ {2,}/ /g' <<< $(call quote,$(sourcefiles) $(sourceincludes)) | $(TR) ' ' '\n' | $(FILE) -m $(call quote,$(BUILDDIR)/magic.mgc) --mime-type --separator '|' --files-from - | $(SED) 's/| */|/g')
 237 endif
 238
 239 # Get the list of supported plaintext file types from the parser.
 240 ifneq ($(wildcard $(BUILDDIR)/parser.xslt),)
 241 override plaintexttypes := $(filter-out $(XMLTYPES),$(shell $(XMLLINT) --xpath '/*/*[@name="书社:parsers"]//*[namespace-uri()="http://www.w3.org/1999/xhtml" and local-name()="dd"]/text()' $(call quote,$(BUILDDIR)/parser.xslt)))
 242 endif
 243
 244 # (callable) Get all of the files (source and includes) which have the given types.
 245 override filesoftype = $(foreach type,$1,$(patsubst %|$(type),%,$(filter %|$(type),$(types))))
 246
 247 # Build up collections of various file types.
 248 override xmlfiles := $(call filesoftype,$(XMLTYPES))
 249 override plaintextfiles := $(filter-out $(xmlfiles),$(call filesoftype,$(plaintexttypes)))
 250 override assetfiles := $(filter-out $(xmlfiles) $(plaintextfiles),$(sourcefiles) $(sourceincludes))
 251
 252 # (callable) Get the types of the given files.
 253 override typeoffile = $(patsubst $(foreach file,$1,$(file)|%),%,$(filter $(foreach file,$1,$(file)|%),$(types)))
 254
 255 # (callable) Get the identifier for the given parser or transform.
 256 override id = $(or $(shell $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $1 2> /dev/null),about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
 257
 258 # (callable) Get the local path for the given source file.
 259 override sourcepath = $(firstword $(foreach directory,$(SRCDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
 260
 261 # (callable) Get the local path for the given include.
 262 override includepath = $(firstword $(foreach directory,$(INCLUDEDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
 263
 264 # (callable) Get base64 data u·r·i’s for the given files.
 265 override datauri = $(foreach file,$1,data:$(call typeoffile,$(file));base64,$(shell $(UUENCODE) -m -r $(call quote,$(file)) _ | tr -d ' \n'))
 266
 267 # Pair each source file and include with its local u·r·i.
 268 override sourcelocalpair := $(foreach file,$(sourcefiles) $(sourceincludes),$(file)|about:shushe?$(if $(filter $(file),$(sourceincludes)),include=$(call pathenc,$(call includepath,$(file))),source=$(call pathenc,$(call sourcepath,$(file)))))
 269
 270 # (callable) Get local uris for the given files.
 271 override localuri = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcelocalpair))))
 272
 273 # (callable) Get the source files for the given local uris.
 274 override sourcefile = $(foreach local,$1,$(patsubst %|$(local),%,$(filter %|$(local),$(sourcelocalpair))))
 275
 276 # Adds a requirement on `$(BUILDDIR)/.update-types´ if the file is present.
 277 #
 278 # This file is created after a reload due to type changes, and is removed after.
 279 # Requiring it ensures that file classifications are up·to·date immediately after the reload.
 280 override typeupdates := $(wildcard $(BUILDDIR)/.update-types)
 281
 282 # Pair each source file and include with its parsed location.
 283 override sourceparsedpair := $(foreach file,$(sourcefiles) $(sourceincludes),$(file)|$(BUILDDIR)/$(if $(filter $(file),$(sourceincludes)),includes/$(call includepath,$(file)),sources/$(call sourcepath,$(file))))
 284
 285 # (callable) Get the location of the transformed X·M·L files for the given source files.
 286 override parsed = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourceparsedpair))))
 287
 288 # (callable) Get the source files for the given parsed file.
 289 override unparsed = $(foreach file,$1,$(patsubst %|$(file),%,$(filter %|$(file),$(sourceparsedpair))))
 290
 291 ifneq ($(wildcard $(BUILDDIR)/dependencies),)
 292 # Pair each file with a list of dependencies for it.
 293 override dependenciesforfile := $(foreach file,$(sourcefiles),$(file)|$(subst $(space),|,$(shell $(CAT) $(call quote,$(BUILDDIR)/dependencies) | $(SED) $(call quote,/^$(call sedesc,$(call localuri,$(file)))$$/$(comma)/^[^   ]/!d;/^ /!d;s/^ //))))
 294
 295 # (callable) Get the list of dependency leiris for the given source files.
 296 #
 297 # Recursive dependencies are marked with a leading `-´.
 298 override dependencyuris = $(foreach file,$1,$(subst |, ,$(patsubst $(file)|%,%,$(filter $(file)|%,$(dependenciesforfile)))))
 299
 300 # (callable) Get the list of recursive dependencies for the given source files.
 301 override recursives = $(foreach uri,$(filter -%,$(call dependencyuris,$1)),$(call sourcefile,$(patsubst -%,%,$(uri))))
 302
 303 # (callable) Get the list of (nonrecursive) dependencies for the given source files.
 304 override dependencies = $(foreach uri,$(filter-out -%,$(call dependencyuris,$1)),$(call sourcefile,$(uri)))
 305 endif
 306
 307 # Collect all files with recursive dependencies.
 308 override recursivefiles := $(foreach file,$(filter-out $(assetfiles),$(sourcefiles)),$(if $(call recursives,$(file)),$(file),))
 309
 310 # Collect all files which should be compiled.
 311 #
 312 # This is all of the non·asset, nonrecursive files.
 313 override compilablefiles := $(filter-out $(assetfiles) $(recursivefiles),$(sourcefiles))
 314
 315 # Collect all files which can be installed.
 316 #
 317 # This is all of the comilable files and all asset sources.
 318 override installablefiles := $(compilablefiles) $(filter $(assetfiles),$(sourcefiles))
 319
 320 ifneq ($(wildcard $(BUILDDIR)/destinations),)
 321 # Get the output of the destination transform.
 322 override destinations := $(shell $(CAT) $(BUILDDIR)/destinations)
 323
 324 # Pair source files and their destinations.
 325 override sourcedestinationpair := $(foreach destination,$(destinations),$(call sourcefile,$(firstword $(subst |, ,$(destination))))|$(call perdec,$(subst $(space),|,$(wordlist 2,$(words $(subst |, ,$(destination))),$(subst |, ,$(destination))))))
 326
 327 # (callable) Get the destination for the given source files.
 328 override destination = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcedestinationpair))))
 329
 330 # Pair each source file with its compiled location.
 331 override sourcecompiledpair := $(foreach file,$(sourcefiles),$(file)|$(BUILDDIR)/public/$(call destination,$(file)))
 332
 333 # (callable) Get the location of the transformed X·M·L files for the given source files.
 334 override compiled = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcecompiledpair))))
 335
 336 # (callable) Get the source files for the given compiled file.
 337 override uncompiled = $(foreach file,$1,$(patsubst %|$(file),%,$(filter %|$(file),$(sourcecompiledpair))))
 338
 339 # (callable) Get the installed locations for the given source files.
 340 override installed = $(foreach file,$1,$(DESTDIR)/$(call destination,$(file)))
 341 endif
 342
 343 # ─ ¶ Recipe Variable Definitions ─────────────────────────────────────
 344
 345 # (callable) Check to see if the given directory exists and create it if not.
 346 override ensuredirectory = if $(TEST) ! -d $(call quote,$1); then $(MKDIR) -p $(call quote,$1); fi
 347
 348 # (callable) Sanitize and wrap the provided plaintext file in X·M·L, printing to `stdout´.
 349 override wrapplaintext = $(PRINTF) '%s\n' "$$($(PRINTF) '%b' '<?xml version=\042\061.0\042?>\n<script xmlns=\042http://www.w3.org/1999/xhtml\042 type=\042$(call typeoffile,$1)\042><![CDATA['; $(CAT) $(call quote,$1) | $(TR) '\000\013\014' '\032\011\012' | $(SED) $$($(PRINTF) '%s%b' 's/]]>/]]]]><!\[CDATA\[>/g;s/\xEF\xBF\xBE/�/g;s/\xEF\xBF\xBF/�/g;$$!s/\r$$//g;s/\r/\n/g;$$!s/\xC2\x85$$//g;s/\xC2\x85/\n/g;s/\xE2\x80\xA8/\n/g;' 's/[\0001-\0010]/�/g;s/[\0016-\0037]/�/g'); $(PRINTF) '%s' ']]></script>')"
 350
 351 # ─ ¶ Phony Targets ───────────────────────────────────────────────────
 352
 353 # Provide help.
 354 help:
 355         @$(PRINTF) '%b' '$(subst $(newline),\n,$(makefileinfo))'
 356
 357 # Compile all files, or error if any are recursive.
 358 all: $(call compiled,$(recursivefiles) $(compilablefiles));
 359
 360 # Destroy buildfiles.
 361 clean:
 362         $(if $(BUILDDIR),$(silent)$(RM) -rf $(call quote,$(BUILDDIR)/),)
 363
 364 # Destroy build directory and installed files.
 365 gone: clean uninstall;
 366
 367 # Install the compiled files into `DESTDIR´, or error if any are recursive.
 368 install: $(call installed,$(recursivefiles) $(installablefiles));
 369
 370 # List all source files and includes and their computed types.
 371 list:
 372         @$(PRINTF) '%b' $(call quote,$(foreach file,$(sort $(sourcefiles)) $(sort $(sourceincludes)),\0033[1m$(file)\0033[22m|$(call typeoffile,$(file))|[\0033[3m$(if $(filter $(file),$(xmlfiles)),xml,$(if $(filter $(file),$(plaintextfiles)),text,asset))$(if $(filter $(file),$(sourceincludes)),|include,)\0033[23m]$(if $(call dependencies,$(file))$(call recursives,$(file)), $(strip $(foreach recursive,$(call recursives,$(file)),\0033[93;41m•|Recursive|Dependency|\0033[39;49m|$(recursive)) $(foreach dependency,$(call dependencies,$(file)),\0033[2m•|Dependency|\0033[22m|$(dependency))))$(if $(filter $(file),$(sourcefiles)), →|<\0033[4m/$(call destination,$(file))\0033[24m>,) )) | $(TR) ' |' '\n '
 373
 374 # Destroy build directory and installed files.
 375 uninstall:
 376         $(foreach file,$(installablefiles),$(if $(wildcard $(call installed,$(file))),$(silent)$(PRINTF) '%s\n' $(call quote,Removing </$(patsubst $(DESTDIR)/%,%,$(call installed,$(file)))>…)$(newline)$(silent)$(RM) -f $(call quote,$(call installed,$(file)))$(newline),))
 377
 378 # Raise an error when attempting to build any files with recursive dependencies.
 379 $(call compiled,$(recursivefiles)):
 380         @$(PRINTF) '%b\n' $(call quote,\0033[93;41mError:\0033[39;49m `$(call uncompiled,$@)´ has recursive dependencies:\n$(subst |, ,$(subst $(space),$(newline),$(foreach recursive,$(call recursives,$(call uncompiled,$@)),•|$(recursive))))) && false
 381
 382 # ─ ¶ Special Targets ─────────────────────────────────────────────────
 383
 384 # Perform secondary expansion; this enables pattern rules to determine their prerequisites based on the matched pattern.
 385 .SECONDEXPANSION: ;
 386
 387 # Don’t use any implicit rules.
 388 .SUFFIXES: ;
 389
 390 # Phony rules; always consider these out·of·date.
 391 .PHONY: all default clean gone info install list uninstall $(call compiled,$(recursivefiles));
 392
 393 ifneq ($(wildcard $(BUILDDIR)/.update-types)$(wildcard $(BUILDDIR)/dependencies)$(wildcard $(BUILDDIR)/destinations),)
 394 # Reload this make·file if the dependency graph or output destinations have changed.
 395 #
 396 # The dependency graph and output destinations are used to set the values of variables in this make·file, so it’s important to ensure that they are actually up·to·date prior to executing any later rules.
 397 #
 398 # This recipe only exists after types have been updated or when the dependency graph or destinations file already exists.
 399 $(THISDIR)/GNUmakefile:: $(BUILDDIR)/dependencies $(BUILDDIR)/destinations
 400         $(silent)$(TOUCH) $(THISDIR)/GNUmakefile
 401         $(silent)$(RM) -f $(BUILDDIR)/.update-types
 402         @$(PRINTF) '%b\n' '\0033[1mDependency graph and output destinations updated. Restarting…\0033[22m'
 403 endif
 404
 405 ifeq ($(wildcard $(BUILDDIR)/.update-types),)
 406 # Reload this make·file if any of the magic files or parsers have changed.
 407 #
 408 # These are used to classify source files, so if they have changed then the make·file must be reloaded.
 409 #
 410 # This recipe sleeps for one second to ensure that files built after the restart have a more current time·stamp.
 411 $(THISDIR)/GNUmakefile:: $(BUILDDIR)/magic.mgc $(BUILDDIR)/parser.xslt
 412         $(silent)$(TOUCH) $(THISDIR)/GNUmakefile
 413         $(silent)$(RM) -f $(call quote,$(BUILDDIR)/dependencies) $(call quote,$(BUILDDIR)/destinations)
 414         @$(PRINTF) '%b\n' '\0033[1mMagic file or parsers have updated. Restarting…\0033[22m'
 415         $(silent)$(SLEEP) 1
 416         $(silent)$(TOUCH) $(call quote,$(BUILDDIR)/.update-types)
 417 endif
 418
 419 # ─ ¶ Build Targets ───────────────────────────────────────────────────
 420
 421 # Generate the compiled magic file from its sources.
 422 #
 423 # It must be updated if any of the files in the magic directory change.
 424 # It ⁜also⁜ should be updated if any of the files in the magic directory are deleted, but this isn’t tracked presently.
 425 $(BUILDDIR)/magic.mgc: $(wildcard $(MAGICDIR)/*)
 426         @$(ECHO) "Compiling new magic…"
 427         $(silent)$(call ensuredirectory,$(dir $@))
 428         $(silent)cd $(call quote,$(BUILDDIR)) && $(FILE) -C -m $(call quote,$(realpath $(MAGICDIR)))
 429
 430 # Generate the main parser.
 431 $(BUILDDIR)/parser.catalog: $(PARSERS)
 432         @$(ECHO) "Generating catalog of parsers…"
 433         $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
 434         $(foreach parser,$(PARSERS),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call id,$(parser),parser)) $(call quote,file:///$(call pathenc,$(abspath $(parser)))) --noout $(call quote,$@)$(newline))
 435 $(BUILDDIR)/parser.xslt: $(BUILDDIR)/parser.catalog $(THISDIR)/lib/catalog2parser.xslt
 436         @$(ECHO) "Generating main parser…"
 437         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2parser.xslt) $(call quote,$<)
 438
 439 # Parse the files.
 440 #
 441 # Even plain X·M·L files are parsed, because they may contain X·H·T·M·L `<script>´ elements which contain other kinds of data.
 442 # Asset files are turned into H·T·M·L embeds pointing to `data:´ U·R·I’s.
 443 $(call parsed,$(sourcefiles) $(sourceincludes)): %: $$(call unparsed,$$@) $(typeupdates)
 444         @$(PRINTF) '%s\n' $(call quote,Processing `$<´…)
 445         $(silent)$(call ensuredirectory,$(dir $@))
 446         $(silent)$(if $(filter $<,$(assetfiles)),$(PRINTF) '%s\n' $(call quote,<object xmlns="http://www.w3.org/1999/xhtml" type="$(call typeoffile,$<)" data="$(call datauri,$<)"/>) > $(call quote,$@),$(if $(filter $<,$(plaintextfiles)),$(call wrapplaintext,$<),$(CAT) $(call quote,$<)) | $(XSLTPROC) -o $(call quote,$@) --stringparam BUILDTIME '$(shell TZ= $(DATE) '+%Y-%m-%dT%H:%M:%SZ')' --stringparam SRCTIME '$(shell TZ= $(STAT) -f '%Sm' -t '%Y-%m-%dT%H:%M:%SZ' $(call quote,$(call unparsed,$@)))'$(if $(thisrev), --stringparam VERSION $(call quote,$(thisrev)),)$(if $(srcrev), --stringparam SRCREV $(call quote,$(srcrev)),) $(call quote,$(BUILDDIR)/parser.xslt) -)
 447
 448 # Generate a catalog of all parsed files, for use when processing includes.
 449 #
 450 # This does not depend on actually transforming the files.
 451 $(BUILDDIR)/catalog: $(sourcefiles) $(sourceincludes) $(typeupdates)
 452         @$(ECHO) "Generating catalog of parsed files…"
 453         $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
 454         $(foreach source,$(sourcefiles) $(sourceincludes),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call localuri,$(source))) $(call quote,file:///$(call pathenc,$(abspath $(call parsed,$(source))))#$(if $(filter $(source),$(assetfiles)),asset,xml)) --noout $(call quote,$@)$(newline))
 455
 456 # Build a list of dependencies for each parsed file.
 457 $(BUILDDIR)/dependencies: $(BUILDDIR)/catalog $(call parsed,$(plaintextfiles) $(xmlfiles)) $(THISDIR)/lib/catalog2dependencies.xslt
 458         @$(ECHO) "Identifying dependencies…"
 459         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2dependencies.xslt) $(call quote,$<)
 460
 461 # Generate a catalog of destinations for files.
 462 #
 463 # This depends on parsing non·asset source files, but not assets or includes.
 464 # It does not require knowing the dependencies.
 465 $(BUILDDIR)/destinations: $(BUILDDIR)/catalog $(call parsed,$(filter-out $(assetfiles),$(sourcefiles))) $(THISDIR)/lib/catalog2destinations.xslt
 466         @$(ECHO) "Identifying output destinations…"
 467         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2destinations.xslt) $(call quote,$<)
 468
 469 # Generate the main transform.
 470 $(BUILDDIR)/transform.catalog: $(TRANSFORMS)
 471         @$(ECHO) "Generating catalog of transforms…"
 472         $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
 473         $(foreach transform,$(TRANSFORMS),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call id,$(transform),transform)) $(call quote,file:///$(call pathenc,$(abspath $(transform)))) --noout $(call quote,$@)$(newline))
 474 $(BUILDDIR)/transform.xslt: $(BUILDDIR)/transform.catalog $(THISDIR)/lib/catalog2transform.xslt
 475         @$(ECHO) "Generating main transform…"
 476         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2transform.xslt) $(call quote,$<)
 477
 478 # Generate the output files using the dependencies as necessary.
 479 $(call compiled,$(compilablefiles)): $(BUILDDIR)/public/%: $$(call parsed,$$(call uncompiled,$$@)) $(BUILDDIR)/transform.xslt $$(call parsed,$$(call dependencies,$$(call uncompiled,$$@)))
 480         $(silent)$(call ensuredirectory,$(dir $@))
 481         @$(PRINTF) '%s\n' $(call quote,Compiling </$*>…)
 482         $(silent)$(XSLTPROC) -o $(call quote,$@) --stringparam CATALOG 'catalog' --stringparam BUILDTIME '$(shell TZ= $(DATE) '+%Y-%m-%dT%H:%M:%SZ')' --stringparam SRCTIME '$(shell TZ= $(STAT) -f '%Sm' -t '%Y-%m-%dT%H:%M:%SZ' $(call quote,$(call uncompiled,$@)))' --stringparam PATH $(call quote,/$*)$(if $(thisrev), --stringparam VERSION $(call quote,$(thisrev)),)$(if $(srcrev), --stringparam SRCREV $(call quote,$(srcrev)),) $(call quote,$(BUILDDIR)/transform.xslt) $(call quote,$<)
 483 $(call compiled,$(filter $(assetfiles),$(sourcefiles))): $(BUILDDIR)/public/%: $$(call uncompiled,$$@)
 484         @$(PRINTF) '%s\n' $(call quote,Compiling </$*>…)
 485         $(silent)$(call ensuredirectory,$(dir $@))
 486         $(silent)$(CP) $(call quote,$<) $(call quote,$@)
 487
 488 # Install compiled files (or error in the case of recursive ones).
 489 $(call installed,$(filter $(assetfiles),$(sourcefiles)) $(recursivefiles) $(compilablefiles)): $(DESTDIR)/%: $(BUILDDIR)/public/%
 490         @$(PRINTF) '%s\n' $(call quote,Installing </$*>…)
 491         $(silent)$(call ensuredirectory,$(dir $@))
 492         $(silent)$(CP) $(call quote,$<) $(call quote,$@)