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 FINDRULES := ! '(' '(' -name '[.-]*' -o -name '*[][*?:|$$%\#;]*' ')' -a -prune ')'
 149 FINDINCLUDERULES := $(FINDRULES)
 150
 151 # The list of parsers for plaintext file types.
 152 #
 153 # Which parsers are provided will influence which kinds of files are recognized as plaintext.
 154 PARSERS := $(patsubst ./%,%,$(wildcard $(THISDIR)/parsers/*.xslt))
 155
 156 # The list of transforms.
 157 TRANSFORMS := $(patsubst ./%,%,$(wildcard $(THISDIR)/transforms/*.xslt))
 158
 159 # List of types which should be treated as X·M·L.
 160 XMLTYPES := application/xml text/xml
 161
 162 # Set to a non·empty value to print all commands as they run.
 163 VERBOSE :=
 164
 165 # The default target for this makefile.
 166 #
 167 # Print help and exit.
 168 .DEFAULT_GOAL := help
 169
 170 # ━ § BEGIN MAKE·FILE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 171
 172 # ─ ¶ Non‐Recipe Variable Definitions ─────────────────────────────────
 173
 174 # A variable with no value, usable when assigning values which contain whitespace.
 175 override empty :=
 176
 177 # A variable which contains a newline, to allow the generation of multiline strings in function calls.
 178 override define newline
 179
 180
 181 endef
 182
 183 # A variable which contains a single space.
 184 override space := $(empty) $(empty)
 185
 186 # A variable which contains a single comma.
 187 override comma := ,
 188
 189 # (callable) Quote the given string for use within shell calls.
 190 override quote = '$(subst ','"'"',$1)'
 191
 192 # Outputs an `@´ to silence rules, unless `VERBOSE´ is nonempty.
 193 override silent := $(if $(VERBOSE),,@)
 194
 195 # (callable) Escape special characters for use in sed regular expressions.
 196 override sedesc = $(subst /,[/],$(subst $$,\$$,$(subst *,\*,$(subst .,\.,$(subst [,\[,$(subst ^,\^,$(subst \,\\,$1)))))))
 197
 198 # (callable) Percent‐decode the given strings.
 199 override perdec = $(foreach encoded,$1,$(shell $(PRINTF) '%s\n' $(call quote,$(encoded)) | $(SED) 's/|/%7C/g;s/[\]/%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'))
 200
 201 # (callable) Percent‐encode the given strings.
 202 #
 203 # This singly‐encodes u·r·i characters and doubly‐encodes other characters, then calls `perdec´ to decode back to a single encoding.
 204 # 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´).
 205 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')))
 206
 207 # (callable) Percent‐encode each component in the given paths.
 208 #
 209 # ☡ This will remove leading and trailing slashes.
 210 override pathenc = $(foreach path,$1,$(subst $(space),/,$(call perenc,$(subst /, ,$(path)))))
 211
 212 # (overridable) Collect all of the applicable includes from the includes directory.
 213 sourceincludes := $(shell $(FIND) $(foreach dir,$(INCLUDEDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f)
 214
 215 # (overridable) Collect all of the applicable source files from the source directory, removing any which are also includes.
 216 sourcefiles := $(filter-out $(sourceincludes),$(shell $(FIND) $(foreach dir,$(SRCDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f))
 217
 218 ifdef GIT
 219 ifneq ($(wildcard $(THISDIR)/.git),)
 220 # (overridable) The name of the current revision of ⛩️📰 书社, or its hash if the current revision is not a tag.
 221 thisrev = $(shell cd $(THISDIR); $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD 2> /dev/null || true)
 222 endif
 223
 224 ifneq ($(wildcard .git),)
 225 # (overridable) The name of the current revision of the working directory, or its hash if the current revision is not a tag.
 226 srcrev = $(shell $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD 2> /dev/null || true)
 227 endif
 228 endif
 229
 230 # Figure out the file type of each source file and source include.
 231 ifneq ($(wildcard $(BUILDDIR)/magic.mgc),)
 232 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')
 233 endif
 234
 235 # Get the list of supported plaintext file types from the parser.
 236 ifneq ($(wildcard $(BUILDDIR)/parser.xslt),)
 237 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)))
 238 endif
 239
 240 # (callable) Get all of the files (source and includes) which have the given types.
 241 override filesoftype = $(foreach type,$1,$(patsubst %|$(type),%,$(filter %|$(type),$(types))))
 242
 243 # Build up collections of various file types.
 244 override xmlfiles := $(call filesoftype,$(XMLTYPES))
 245 override plaintextfiles := $(filter-out $(xmlfiles),$(call filesoftype,$(plaintexttypes)))
 246 override assetfiles := $(filter-out $(xmlfiles) $(plaintextfiles),$(sourcefiles) $(sourceincludes))
 247
 248 # (callable) Get the types of the given files.
 249 override typeoffile = $(patsubst $(foreach file,$1,$(file)|%),%,$(filter $(foreach file,$1,$(file)|%),$(types)))
 250
 251 # (callable) Get the identifier for the given parser or transform.
 252 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))))
 253
 254 # (callable) Get the local path for the given source file.
 255 override sourcepath = $(firstword $(foreach directory,$(SRCDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
 256
 257 # (callable) Get the local path for the given include.
 258 override includepath = $(firstword $(foreach directory,$(INCLUDEDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
 259
 260 # (callable) Get base64 data u·r·i’s for the given files.
 261 override datauri = $(foreach file,$1,data:$(call typeoffile,$(file));base64,$(shell $(UUENCODE) -m -r $(call quote,$(file)) _ | tr -d ' \n'))
 262
 263 # Pair each source file and include with its local u·r·i.
 264 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)))))
 265
 266 # (callable) Get local uris for the given files.
 267 override localuri = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcelocalpair))))
 268
 269 # (callable) Get the source files for the given local uris.
 270 override sourcefile = $(foreach local,$1,$(patsubst %|$(local),%,$(filter %|$(local),$(sourcelocalpair))))
 271
 272 # Adds a requirement on `$(BUILDDIR)/.update-types´ if the file is present.
 273 #
 274 # This file is created after a reload due to type changes, and is removed after.
 275 # Requiring it ensures that file classifications are up·to·date immediately after the reload.
 276 override typeupdates := $(wildcard $(BUILDDIR)/.update-types)
 277
 278 # Pair each source file and include with its parsed location.
 279 override sourceparsedpair := $(foreach file,$(sourcefiles) $(sourceincludes),$(file)|$(BUILDDIR)/$(if $(filter $(file),$(sourceincludes)),includes/$(call includepath,$(file)),sources/$(call sourcepath,$(file))))
 280
 281 # (callable) Get the location of the transformed X·M·L files for the given source files.
 282 override parsed = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourceparsedpair))))
 283
 284 # (callable) Get the source files for the given parsed file.
 285 override unparsed = $(foreach file,$1,$(patsubst %|$(file),%,$(filter %|$(file),$(sourceparsedpair))))
 286
 287 ifneq ($(wildcard $(BUILDDIR)/dependencies),)
 288 # Pair each file with a list of dependencies for it.
 289 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/^ //))))
 290
 291 # (callable) Get the list of dependency leiris for the given source files.
 292 #
 293 # Recursive dependencies are marked with a leading `-´.
 294 override dependencyuris = $(foreach file,$1,$(subst |, ,$(patsubst $(file)|%,%,$(filter $(file)|%,$(dependenciesforfile)))))
 295
 296 # (callable) Get the list of recursive dependencies for the given source files.
 297 override recursives = $(foreach uri,$(filter -%,$(call dependencyuris,$1)),$(call sourcefile,$(patsubst -%,%,$(uri))))
 298
 299 # (callable) Get the list of (nonrecursive) dependencies for the given source files.
 300 override dependencies = $(foreach uri,$(filter-out -%,$(call dependencyuris,$1)),$(call sourcefile,$(uri)))
 301 endif
 302
 303 # Collect all files with recursive dependencies.
 304 override recursivefiles := $(foreach file,$(filter-out $(assetfiles),$(sourcefiles)),$(if $(call recursives,$(file)),$(file),))
 305
 306 # Collect all files which should be compiled.
 307 #
 308 # This is all of the non·asset, nonrecursive files.
 309 override compilablefiles := $(filter-out $(assetfiles) $(recursivefiles),$(sourcefiles))
 310
 311 # Collect all files which can be installed.
 312 #
 313 # This is all of the comilable files and all asset sources.
 314 override installablefiles := $(compilablefiles) $(filter $(assetfiles),$(sourcefiles))
 315
 316 ifneq ($(wildcard $(BUILDDIR)/destinations),)
 317 # Get the output of the destination transform.
 318 override destinations := $(shell $(CAT) $(BUILDDIR)/destinations)
 319
 320 # Pair source files and their destinations.
 321 override sourcedestinationpair := $(foreach destination,$(destinations),$(call sourcefile,$(firstword $(subst |, ,$(destination))))|$(call perdec,$(subst $(space),|,$(wordlist 2,$(words $(subst |, ,$(destination))),$(subst |, ,$(destination))))))
 322
 323 # (callable) Get the destination for the given source files.
 324 override destination = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcedestinationpair))))
 325
 326 # Pair each source file with its compiled location.
 327 override sourcecompiledpair := $(foreach file,$(sourcefiles),$(file)|$(BUILDDIR)/public/$(call destination,$(file)))
 328
 329 # (callable) Get the location of the transformed X·M·L files for the given source files.
 330 override compiled = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcecompiledpair))))
 331
 332 # (callable) Get the source files for the given compiled file.
 333 override uncompiled = $(foreach file,$1,$(patsubst %|$(file),%,$(filter %|$(file),$(sourcecompiledpair))))
 334
 335 # (callable) Get the installed locations for the given source files.
 336 override installed = $(foreach file,$1,$(DESTDIR)/$(call destination,$(file)))
 337 endif
 338
 339 # ─ ¶ Recipe Variable Definitions ─────────────────────────────────────
 340
 341 # (callable) Check to see if the given directory exists and create it if not.
 342 override ensuredirectory = if $(TEST) ! -d $(call quote,$1); then $(MKDIR) -p $(call quote,$1); fi
 343
 344 # (callable) Sanitize and wrap the provided plaintext file in X·M·L, printing to `stdout´.
 345 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'); $(PRINTF) '%s' ']]></script>')"
 346
 347 # ─ ¶ Phony Targets ───────────────────────────────────────────────────
 348
 349 # Provide help.
 350 help:
 351         @$(PRINTF) '%b' '$(subst $(newline),\n,$(makefileinfo))'
 352
 353 # Compile all files, or error if any are recursive.
 354 all: $(call compiled,$(recursivefiles) $(compilablefiles));
 355
 356 # Destroy buildfiles.
 357 clean:
 358         $(if $(BUILDDIR),$(silent)$(RM) -rf $(call quote,$(BUILDDIR)/),)
 359
 360 # Destroy build directory and installed files.
 361 gone: clean uninstall;
 362
 363 # Install the compiled files into `DESTDIR´, or error if any are recursive.
 364 install: $(call installed,$(recursivefiles) $(installablefiles));
 365
 366 # List all source files and includes and their computed types.
 367 list:
 368         @$(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 '
 369
 370 # Destroy build directory and installed files.
 371 uninstall:
 372         $(foreach file,$(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),))
 373
 374 # Raise an error when attempting to build any files with recursive dependencies.
 375 $(call compiled,$(recursivefiles)):
 376         @$(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
 377
 378 # ─ ¶ Special Targets ─────────────────────────────────────────────────
 379
 380 # Perform secondary expansion; this enables pattern rules to determine their prerequisites based on the matched pattern.
 381 .SECONDEXPANSION: ;
 382
 383 # Don’t use any implicit rules.
 384 .SUFFIXES: ;
 385
 386 # Phony rules; always consider these out·of·date.
 387 .PHONY: all default clean gone info install list uninstall $(call compiled,$(recursivefiles));
 388
 389 ifneq ($(wildcard $(BUILDDIR)/.update-types)$(wildcard $(BUILDDIR)/dependencies),)
 390 # Reload this make·file if the dependency graph has changed.
 391 #
 392 # 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.
 393 #
 394 # This recipe only exists after types have been updated or when the dependency graph already exists.
 395 $(THISDIR)/GNUmakefile:: $(BUILDDIR)/dependencies $(BUILDDIR)/destinations
 396         $(silent)$(TOUCH) $(THISDIR)/GNUmakefile
 397         $(silent)$(RM) -f $(BUILDDIR)/.update-types
 398         @$(PRINTF) '%b\n' '\0033[1mDependency graph and output destinations updated. Restarting…\0033[22m'
 399 endif
 400
 401 ifeq ($(wildcard $(BUILDDIR)/.update-types),)
 402 # Reload this make·file if any of the magic files or parsers have changed.
 403 #
 404 # These are used to classify source files, so if they have changed then the make·file must be reloaded.
 405 #
 406 # This recipe sleeps for one second to ensure that files built after the restart have a more current time·stamp.
 407 $(THISDIR)/GNUmakefile:: $(BUILDDIR)/magic.mgc $(BUILDDIR)/parser.xslt
 408         $(silent)$(TOUCH) $(THISDIR)/GNUmakefile
 409         $(silent)$(RM) -f $(call quote,$(BUILDDIR)/dependencies)
 410         @$(PRINTF) '%b\n' '\0033[1mMagic file or parsers have updated. Restarting…\0033[22m'
 411         $(silent)$(SLEEP) 1
 412         $(silent)$(TOUCH) $(call quote,$(BUILDDIR)/.update-types)
 413 endif
 414
 415 # ─ ¶ Build Targets ───────────────────────────────────────────────────
 416
 417 # Generate the compiled magic file from its sources.
 418 #
 419 # It must be updated if any of the files in the magic directory change.
 420 # It ⁜also⁜ should be updated if any of the files in the magic directory are deleted, but this isn’t tracked presently.
 421 $(BUILDDIR)/magic.mgc: $(wildcard $(MAGICDIR)/*)
 422         @$(ECHO) "Compiling new magic…"
 423         $(silent)$(call ensuredirectory,$(dir $@))
 424         $(silent)cd $(call quote,$(BUILDDIR)) && $(FILE) -C -m $(call quote,$(realpath $(MAGICDIR)))
 425
 426 # Generate the main parser.
 427 $(BUILDDIR)/parser.catalog: $(PARSERS)
 428         @$(ECHO) "Generating catalog of parsers…"
 429         $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
 430         $(foreach parser,$(PARSERS),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call id,$(parser),parser)) $(call quote,file:///$(call pathenc,$(abspath $(parser)))) --noout $(call quote,$@)$(newline))
 431 $(BUILDDIR)/parser.xslt: $(BUILDDIR)/parser.catalog $(THISDIR)/lib/catalog2parser.xslt
 432         @$(ECHO) "Generating main parser…"
 433         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2parser.xslt) $(call quote,$<)
 434
 435 # Parse the files.
 436 #
 437 # 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.
 438 # Asset files are turned into H·T·M·L embeds pointing to `data:´ U·R·I’s.
 439 $(call parsed,$(sourcefiles) $(sourceincludes)): %: $$(call unparsed,$$@) $(typeupdates)
 440         @$(PRINTF) '%s\n' $(call quote,Processing `$<´…)
 441         $(silent)$(call ensuredirectory,$(dir $@))
 442         $(silent)$(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) -)
 443
 444 # Generate a catalog of all parsed files, for use when processing includes.
 445 #
 446 # This does not depend on actually transforming the files.
 447 $(BUILDDIR)/catalog: $(sourcefiles) $(sourceincludes) $(typeupdates)
 448         @$(ECHO) "Generating catalog of parsed files…"
 449         $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
 450         $(foreach source,$(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))
 451
 452 # Build a list of dependencies for each parsed file.
 453 $(BUILDDIR)/dependencies: $(BUILDDIR)/catalog $(call parsed,$(plaintextfiles) $(xmlfiles)) $(THISDIR)/lib/catalog2dependencies.xslt
 454         @$(ECHO) "Identifying dependencies…"
 455         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2dependencies.xslt) $(call quote,$<)
 456
 457 # Generate a catalog of destinations for files.
 458 #
 459 # This depends on parsing non·asset source files, but not assets or includes.
 460 # It does not require knowing the dependencies.
 461 $(BUILDDIR)/destinations: $(BUILDDIR)/catalog $(call parsed,$(filter-out $(assetfiles),$(sourcefiles))) $(THISDIR)/lib/catalog2destinations.xslt
 462         @$(ECHO) "Identifying output destinations…"
 463         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2destinations.xslt) $(call quote,$<)
 464
 465 # Generate the main transform.
 466 $(BUILDDIR)/transform.catalog: $(TRANSFORMS)
 467         @$(ECHO) "Generating catalog of transforms…"
 468         $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
 469         $(foreach transform,$(TRANSFORMS),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call id,$(transform),transform)) $(call quote,file:///$(call pathenc,$(abspath $(transform)))) --noout $(call quote,$@)$(newline))
 470 $(BUILDDIR)/transform.xslt: $(BUILDDIR)/transform.catalog $(THISDIR)/lib/catalog2transform.xslt
 471         @$(ECHO) "Generating main transform…"
 472         $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2transform.xslt) $(call quote,$<)
 473
 474 # Generate the output files using the dependencies as necessary.
 475 $(call compiled,$(compilablefiles)): $(BUILDDIR)/public/%: $$(call parsed,$$(call uncompiled,$$@)) $(BUILDDIR)/transform.xslt $$(call parsed,$$(call dependencies,$$(call uncompiled,$$@)))
 476         $(silent)$(call ensuredirectory,$(dir $@))
 477         @$(PRINTF) '%s\n' $(call quote,Compiling </$*>…)
 478         $(silent)$(XSLTPROC) -o $(call quote,$@) --stringparam CATALOG 'catalog' --stringparam BUILDTIME '$(shell TZ= $(DATE) '+%Y-%m-%dT%H:%M:%SZ')' --stringparam SRCTIME '$(shell TZ= $(STAT) -f '%Sm' -t '%Y-%m-%dT%H:%M:%SZ' $(call quote,$(call uncompiled,$@)))' --stringparam PATH $(call quote,/$*)$(if $(thisrev), --stringparam VERSION $(call quote,$(thisrev)),)$(if $(srcrev), --stringparam SRCREV $(call quote,$(srcrev)),) $(call quote,$(BUILDDIR)/transform.xslt) $(call quote,$<)
 479 $(call compiled,$(filter $(assetfiles),$(sourcefiles))): $(BUILDDIR)/public/%: $$(call uncompiled,$$@)
 480         @$(PRINTF) '%s\n' $(call quote,Compiling </$*>…)
 481         $(silent)$(call ensuredirectory,$(dir $@))
 482         $(silent)$(CP) $(call quote,$<) $(call quote,$@)
 483
 484 # Install compiled files (or error in the case of recursive ones).
 485 $(call installed,$(filter $(assetfiles),$(sourcefiles)) $(recursivefiles) $(compilablefiles)): $(DESTDIR)/%: $(BUILDDIR)/public/%
 486         @$(PRINTF) '%s\n' $(call quote,Installing </$*>…)
 487         $(silent)$(call ensuredirectory,$(dir $@))
 488         $(silent)$(CP) $(call quote,$<) $(call quote,$@)