X-Git-Url: https://git.ladys.computer/Shushe/blobdiff_plain/5df1b342a607db60d876eeb10d953b7a45464e24..82fd95b5f6748674ec5929b9b1a6caf30172b544:/GNUmakefile
diff --git a/GNUmakefile b/GNUmakefile
index 89ca784..c7f615d 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -6,7 +6,7 @@ SHELL = /bin/sh
# ━ § BASIC INFORMATION ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
override define makefileinfo
╭────────────────────────────╮
-╔╡ ⁌ ⛩️📰 书社 ∷ GNUmakefile ╞═════════════════════════════════╗
+╔╡ ⁌ ⛩📰 书社 ∷ GNUmakefile ╞═════════════════════════════════╗
║╰────────────────────────────╯ ║
╟┬ ¶ Prerequisites ───────────────────────────────────────────┬╢
║│ │║
@@ -83,7 +83,7 @@ override define makefileinfo
║╰────────────────────────────────────────────────────────────╯║
╟┬ ¶ Copyright & License ─────────────────────────────────────┬╢
║│ │║
-║│ Copyright © 2023–2024 Lady [@ Lady’s Computer]. │║
+║│ Copyright © 2023–2024 Lady [@ Ladys Computer]. │║
║│ │║
║│ This Source Code Form is subject to the terms of the │║
║│ Mozilla Public License, v 2.0. If a copy of the M·P·L was │║
@@ -149,7 +149,7 @@ SRCDIR := sources
# Multiple directories can be given so long as files with the same name do not exist in each.
#
# These can be inside of `SRCDIR´ directories if desired.
-INCLUDEDIR := $(SRCDIR)/includes
+INCLUDEDIR := $(foreach dir,$(SRCDIR),$(dir)/includes)
# The directory in which to generate temporary buildfiles.
#
@@ -161,7 +161,7 @@ BUILDDIR := build
# This variable is also used by the archiving `MODE´.
DESTDIR := public
-# The location of this Makefile (and related ⛩️📰 书社 files), relative to the current working directory.
+# The location of this Makefile (and related ⛩📰 书社 files), relative to the current working directory.
#
# By default, this is inferred from the variable `MAKEFILE_LIST´.
#
@@ -173,8 +173,8 @@ THISDIR := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
# By default, `find´ will ignore files which begin with a period and those which are likely to cause problems for `make´.
EXTRAFINDRULES :=
EXTRAFINDINCLUDERULES :=
-FINDRULES := ! '(' '(' -name '[.-]*' -o -name '*[][*?:|$$%\#\\; ]*' -o -name '*[)]' ')' -a -prune ')'$(if $(EXTRAFINDRULES), -a $(EXTRAFINDRULES),)
-FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a $(EXTRAFINDINCLUDERULES),)
+FINDRULES := ! '(' '(' -name '[.-]*' -a ! -name '.' -o -name '*[][*?:|$$%\#\\; ]*' -o -name '*[)]' ')' -a -prune ')'$(if $(EXTRAFINDRULES), -a '(' $(EXTRAFINDRULES) ')',)
+FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a '(' $(EXTRAFINDINCLUDERULES) ')',)
# The list of magic files to use when determining media types.
#
@@ -184,12 +184,24 @@ FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a $(EXTRAFINDINC
EXTRAMAGIC :=
MAGIC := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/magic/*)) $(EXTRAMAGIC))
+# The list of depedencies for parsers.
+#
+# When these files change, the assumption is that the result of the parsers will change as well, even if the parsers themselves have not.
+EXTRAPARSERLIBS :=
+PARSERLIBS := $(sort $(THISDIR)/lib/split.xslt $(EXTRAPARSERLIBS))
+
# The list of parsers for plaintext file types.
#
# Which parsers are provided will influence which kinds of files are recognized as plaintext.
EXTRAPARSERS :=
PARSERS := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/parsers/*.xslt)) $(EXTRAPARSERS))
+# The list of depedencies for transforms.
+#
+# When these files change, the assumption is that the result of the transforms will change as well, even if the transforms themselves have not.
+EXTRATRANSFORMLIBS :=
+TRANSFORMLIBS := $(sort $(THISDIR)/lib/serialize.xslt $(EXTRATRANSFORMLIBS))
+
# The list of transforms.
EXTRATRANSFORMS :=
TRANSFORMS := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/transforms/*.xslt)) $(EXTRATRANSFORMS))
@@ -200,9 +212,12 @@ TRANSFORMS := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/transforms/*.xslt))
# ends accordingly.
XMLTYPES := application/xml text/xml +xml
+# A program to run on basic X·M·L files after they are transformed.
+FINALIZE := $(XMLLINT) --nonet --nsclean
+
ifdef GIT
ifneq ($(wildcard $(THISDIR)/.git),)
-# A description of the current git revision of ⛩️📰 书社.
+# A description of the current git revision of ⛩📰 书社.
THISREV := $(shell $(CD) $(THISDIR); $(GIT) describe 2>>/dev/null || $(GIT) rev-parse HEAD 2>>/dev/null || :)
endif
@@ -230,6 +245,14 @@ QUIET :=
# Set to a non·empty value to print all commands as they run.
VERBOSE :=
+# Posix locale information.
+LC_ALL := C
+export LC_ALL
+
+# Posix timezone information.
+TZ := UTC0
+export UTC0
+
# The default target for this makefile.
.DEFAULT_GOAL := all
@@ -258,19 +281,12 @@ override space := $(empty) $(empty)
# A variable which contains a single comma.
override comma := ,
+# (callable) Make empty strings non·empty, and non·empty strings empty.
+override not = $(if $1,,1)
+
# (callable) Quote the given string for use within shell calls.
override quote = '$(subst ','"'"',$1)'
-# (callable) Get the modified time of the provided file.
-#
-# This touches a file containing only a newline and then diffs it with `/dev/null´ and extracts the timestamp from the diff.
-# Interestingly, on Macintosh, the format of `diff -u´ is only Posixy (including a fractional component and timezone) when `COMMAND_MODE=legacy´; however, the timezone will always be zero and the fractional component is ignorable, so it’s not necessary to worry about that here.
-#
-# The diff will always have an exit status of 1, but this is ignored by piping into Sed.
-#
-# ☡ This variable creates a subshell every time it is computed.
-override modtime = $(shell if $(TEST) ! -f $(call quote,$(BUILDDIR)/.mtime); then $(PRINTF) '%b' '\n' > $(call quote,$(BUILDDIR)/.mtime); fi; $(TOUCH) -r $(call quote,$1) $(call quote,$(BUILDDIR)/.mtime); TZ=UTC0 $(DIFF) -u $(call quote,$(BUILDDIR)/.mtime) /dev/null | $(SED) '1!d;s/.* \([^ ]*\) \([^ ]*\).*$$/\1T\2Z/')
-
# ─ ¶ Recipe Variable Definitions ─────────────────────────────────────
# Outputs an `@´ to silence rules, unless `VERBOSE´ is non·empty.
@@ -291,13 +307,13 @@ override xargsquote = $(SED) $(call quote,s/'/'"'"'/g;s/^/'/;s/$$/'/;$$!s/$$/\\/
override xargsmultiquote = $(SED) $(call quote,s/'/'"'"'/g;s/^/'/;s/$$/'/)
# (callable) Test if the provided xpath expression matches the provided document.
-override xpath = $(XMLLINT) --xpath $(call quote,$1) $(call quote,$2) >>/dev/null 2>>/dev/null
+override xpath = $(XMLLINT) --noent --nonet --xpath $(call quote,$1) $(call quote,$2) >>/dev/null 2>>/dev/null
# (callable) Extract the value of the text nodes in the provided X·M·L document and print them to `stdout´.
-override extracttext = $(PRINTF) '%s' '' | $(XSLTPROC) --nonet --novalid - $(call quote,$1)
+override extracttext = $(PRINTF) '%s' '' | $(XSLTPROC) --nonet --novalid --nomkdir --nowrite - $(call quote,$1)
# (callable) Process the provided transformation result and output the result to the provided location, given the provided relative path.
-override processresultto = if $(call xpath,/*[local-name()="raw-text" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$1); then $(call extracttext,$1) >|$(call quote,$2); elif $(call xpath,/*[local-name()="base64-binary" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$1); then { $(PRINTF) '%s\n' 'begin-base64 644 -'; $(call extracttext,$1) | $(TR) -d '\t\n\f\r '; $(PRINTF) '\n%s\n' '===='; } | $(UUDECODE) -o /dev/stdout >|$(call quote,$2); elif $(call xpath,/*[local-name()="archive" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$1); then $(MAKE) -f $(call quote,$(abspath $(THISDIR)/GNUmakefile)) NAME=$(call quote,$3) SRC=$(call quote,$1) BUILDDIR=$(call quote,$(BUILDDIR)/archive/$3) DESTDIR=$(call quote,$(patsubst %/,%,$(dir $2))) MODE='urn:fdc:ladys.computer:20231231:Shu1She4:mode:archive' $(call quote,$2); else $(XMLLINT) --nsclean $(call quote,$1) >|$(call quote,$2); fi
+override processresultto = if $(call xpath,/*[local-name()="raw-text" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$1); then $(call extracttext,$1) >|$(call quote,$2); elif $(call xpath,/*[local-name()="base64-binary" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$1); then { $(PRINTF) '%s\n' 'begin-base64 644 -'; $(call extracttext,$1) | $(TR) -d '\t\n\f\r '; $(PRINTF) '\n%s\n' '===='; } | $(UUDECODE) -o /dev/stdout >|$(call quote,$2); elif $(call xpath,/*[local-name()="archive" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$1); then $(MAKE) -f $(call quote,$(abspath $(THISDIR)/GNUmakefile)) NAME=$(call quote,$3) SRC=$(call quote,$1) BUILDDIR=$(call quote,$(BUILDDIR)/archive/$3) DESTDIR=$(call quote,$(patsubst %/,%,$(dir $2))) MODE='urn:fdc:ladys.computer:20231231:Shu1She4:mode:archive' $(call quote,$2); else $(FINALIZE) $(call quote,$1) >|$(call quote,$2); fi
# ━ § BEGIN DEFAULT MAKE·FILE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
@@ -305,14 +321,25 @@ ifeq ($(MODE),urn:fdc:ladys.computer:20231231:Shu1She4:mode:default)
# ─ ¶ Non‐Recipe Variable Definitions ─────────────────────────────────
+# Non·empty if `help´ or `clean´, and no targets other than `help´ or `clean´, were specified as goals on the commandline.
+override notbuilding := $(and $(filter help clean,$(MAKECMDGOALS)),$(call not,$(filter-out help clean,$(MAKECMDGOALS))))
+
# (callable) Test to see if the prerequisites provided by the second argument matches the value in the file corresponding to the first argument in `$(BUILDDIR)/lastprereqs´.
# If not, save the new value and then add FORCE.
# Return them regardless.
#
# Calling this variable is useful when a given target should be updated whenever its list of prerequisites changes in addition to whenever there is a change to one of its prerequisites.
#
+# If `$(notbuilding)´ is non·empty, this variable produces no result to avoid unnecessary work.
+#
# ☡ This variable creates at least one subshell every time it is computed.
-override diffprereqs = $(if $(subst $(shell $(CAT) $(call quote,$(BUILDDIR)/lastprereqs/$1) 2>>/dev/null || :),,$2),$2 FORCE$(and $(shell $(call ensuredirectory,$(BUILDDIR)/lastprereqs) && $(PRINTF) '%s\n' $(call quote,$2) >|$(BUILDDIR)/lastprereqs/$1),),$2)
+override diffprereqs = $(if $(notbuilding),,$(if $(subst $(shell $(CAT) $(call quote,$(BUILDDIR)/lastprereqs/$1) 2>>/dev/null || :),,$2),$2 FORCE$(and $(shell $(call ensuredirectory,$(BUILDDIR)/lastprereqs) && $(PRINTF) '%s\n' $(call quote,$2) >|$(BUILDDIR)/lastprereqs/$1),),$2))
+
+# (callable) Escape special characters for use in X·M·L.
+override xmlesc = $(subst >,>,$(subst <,<,$(subst &,&,$1)))
+
+# (callable) Escape special characters for use in X·M·L attributes.
+override attresc = $(subst ",",$(call xmlesc,$1))
# (callable) Escape special characters for use in sed regular expressions.
override sedesc = $(subst /,[/],$(subst $$,\$$,$(subst *,\*,$(subst .,\.,$(subst [,\[,$(subst ^,\^,$(subst \,\\,$1)))))))
@@ -340,11 +367,16 @@ override perenc = $(shell $(PRINTF) '%s\n' $(foreach unencoded,$1,$(call quote,$
# ☡ This variable creates a subshell every time it is computed.
override pathenc = $(subst %2F,/,$(call perenc,$1))
+# (callable) Create a unique name for the given file, based on its absolute path.
+#
+# ☡ This variable creates a subshell every time it is computed.
+namehash = $(shell $(PRINTF) '%s' $(call quote,$(abspath $1)) | $(CKSUM) | $(SED) 's/ .*//' | $(XARGS) -E '' $(PRINTF) '%X')-$(notdir $1)
+
# (overridable) Collect all of the applicable includes from the includes directory.
-sourceincludes := $(shell $(FIND) $(foreach dir,$(INCLUDEDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f)
+sourceincludes := $(if $(and $(INCLUDEDIR),$(wildcard $(INCLUDEDIR))),$(patsubst ./%,%,$(shell $(FIND) $(foreach dir,$(INCLUDEDIR),$(call quote,$(dir))) '(' $(FINDINCLUDERULES) ')' -a -type f -a -print)),)
# (overridable) Collect all of the applicable source files from the source directory, removing any which are also includes.
-sourcefiles := $(filter-out $(sourceincludes),$(shell $(FIND) $(foreach dir,$(SRCDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f))
+sourcefiles := $(if $(and $(SRCDIR),$(wildcard $(SRCDIR))),$(filter-out $(sourceincludes),$(patsubst ./%,%,$(shell $(FIND) $(foreach dir,$(SRCDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f -a -print))))
# Figure out the file type of each source file and source include.
ifneq ($(wildcard $(BUILDDIR)/magic.mgc),)
@@ -353,7 +385,7 @@ endif
# Get the list of supported plaintext file types from the parser.
ifneq ($(wildcard $(BUILDDIR)/parser.xslt),)
-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)))
+override plaintexttypes := $(filter-out $(XMLTYPES),$(shell $(XMLLINT) --noent --nonet --xpath '/*/*[@name="书社:parsers"]//*[namespace-uri()="http://www.w3.org/1999/xhtml" and local-name()="dd"]/text()' $(call quote,$(BUILDDIR)/parser.xslt)))
endif
# (callable) Get all of the files (source and includes) which have the provided types.
@@ -367,10 +399,10 @@ override plaintextfiles := $(filter-out $(xmlfiles),$(call filesoftype,$(plainte
override assetfiles := $(filter-out $(xmlfiles) $(plaintextfiles),$(sourcefiles) $(sourceincludes))
# (callable) Get the types of the given files.
-override typeoffile = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(types))))
+override typeoffile = $(foreach file,$1,$(or $(patsubst $(file)|%,%,$(filter $(file)|%,$(types))),application/octet-stream))
# Pair each source magic file with its location in the build directory.
-override magicpair := $(foreach magicfile,$(MAGIC),$(magicfile)|$(BUILDDIR)/magic/$(notdir $(magicfile)))
+override magicpair := $(foreach magicfile,$(MAGIC),$(magicfile)|$(BUILDDIR)/magic/$(call namehash,$(magicfile)))
# (callable) Get the source file for the given magic files.
override magicsource = $(foreach magicpath,$1,$(patsubst %|$(magicpath),%,$(firstword $(filter %|$(magicpath),$(magicpair)))))
@@ -379,10 +411,10 @@ override magicsource = $(foreach magicpath,$1,$(patsubst %|$(magicpath),%,$(firs
override magicfile = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(magicpair))))
# (callable) Get the local path for the given source file.
-override sourcepath = $(firstword $(foreach directory,$(SRCDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
+override sourcepath = $(or $(firstword $(foreach directory,$(SRCDIR),$(if $(filter .,$(directory)),$(wildcard $1),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))),$(error Unable to get local path for source file `$1´))
# (callable) Get the local path for the given include.
-override includepath = $(firstword $(foreach directory,$(INCLUDEDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
+override includepath = $(or $(firstword $(foreach directory,$(INCLUDEDIR),$(if $(filter .,$(directory)),$(wildcard $1),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))),$(error Unable to get local path for include file `$1´))
# (callable) Get base64 data u·r·i’s for the given files.
#
@@ -402,7 +434,16 @@ override sourcefile = $(foreach local,$1,$(patsubst %|$(local),%,$(filter %|$(lo
#
# This file is created before a reload due to type changes, and is removed after.
# This ensures that file classifications are up·to·date immediately after the reload.
-override typeupdates := $(if $(wildcard $(BUILDDIR)/.update-types),FORCE,)
+override typeupdates := $(and $(wildcard $(BUILDDIR)/.update-types),FORCE)
+
+# Pair each source file and include with its metadata location.
+override sourcemetadatapair := $(foreach file,$(sourcefiles) $(sourceincludes),$(file)|$(BUILDDIR)/$(if $(filter $(file),$(sourceincludes)),includes.metadata/$(call includepath,$(file)),sources.metadata/$(call sourcepath,$(file))))
+
+# (callable) Get the location of the transformed X·M·L files for the given source files.
+override metadata = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcemetadatapair))))
+
+# (callable) Get the source files for the given parsed file.
+override datadata = $(foreach file,$1,$(patsubst %|$(file),%,$(filter %|$(file),$(sourcemetadatapair))))
# Pair each source file and include with its parsed location.
override sourceparsedpair := $(foreach file,$(sourcefiles) $(sourceincludes),$(file)|$(BUILDDIR)/$(if $(filter $(file),$(sourceincludes)),includes/$(call includepath,$(file)),sources/$(call sourcepath,$(file))))
@@ -413,15 +454,15 @@ override parsed = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(
# (callable) Get the source files for the given parsed file.
override unparsed = $(foreach file,$1,$(patsubst %|$(file),%,$(filter %|$(file),$(sourceparsedpair))))
-# Pair each parser, transform, or parsed file with its file u·r·i.
-override fileuripairs := $(join $(patsubst %,%|,$(PARSERS) $(TRANSFORMS) $(call parsed,$(sourcefiles) $(sourceincludes))),$(call pathenc,$(foreach uriable,$(PARSERS) $(TRANSFORMS) $(call parsed,$(sourcefiles) $(sourceincludes)),file://$(abspath $(uriable)))))
+# Pair each build directory, parser, transform, source file, or parsed file with its file u·r·i.
+override fileuripairs := $(join $(patsubst %,%|,$(BUILDDIR) $(PARSERS) $(TRANSFORMS) $(sourcefiles) $(sourceincludes) $(call parsed,$(sourcefiles) $(sourceincludes))),$(call pathenc,$(foreach uriable,$(BUILDDIR) $(PARSERS) $(TRANSFORMS) $(sourcefiles) $(sourceincludes) $(call parsed,$(sourcefiles) $(sourceincludes)),file://$(abspath $(uriable)))))
-# (callable) Get the file u·r·is for the given parsers, transforms, or parsed files.
-override fileuri = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(fileuripairs))))
+# (callable) Get the file u·r·is for the given parsers, transforms, source file or parsed files.
+override fileuri = $(foreach file,$1,$(or $(patsubst $(file)|%,%,$(filter $(file)|%,$(fileuripairs))),$(error Unable to get file u·r·i for `$(file)´)))
ifneq ($(wildcard $(BUILDDIR)/dependencies),)
# Pair each file with a list of dependencies for it.
-override dependenciesforfile := $(foreach file,$(filter-out $(assetfiles),$(sourcefiles) $(sourceincludes)),$(file)|$(subst $(space),|,$(shell $(CAT) $(call quote,$(BUILDDIR)/dependencies) | $(SED) $(call quote,/^$(call sedesc,$(call localuri,$(file)))$$/$(comma)/^[^ ]/!d;/^ /!d;s/^ //))))
+override dependenciesforfile := $(foreach file,$(filter-out $(assetfiles),$(sourcefiles) $(sourceincludes)),$(file)|$(subst $(space),|,$(shell $(SED) $(call quote,/^$(call sedesc,$(call localuri,$(file)))$$/$(comma)/^[^ ]/!d;/^ /!d;s/^ //) <$(call quote,$(BUILDDIR)/dependencies))))
# (callable) Get the list of dependency leiris for the given source files.
#
@@ -429,9 +470,13 @@ override dependenciesforfile := $(foreach file,$(filter-out $(assetfiles),$(sour
override dependencyuris = $(foreach file,$1,$(subst |, ,$(patsubst $(file)|%,%,$(filter $(file)|%,$(dependenciesforfile)))))
# (callable) Get the list of recursive dependencies for the given source files.
+#
+# If the file cannot have dependencies (e·g is an asset file), the resulting value will be the empty string.
override recursives = $(foreach uri,$(filter -%,$(call dependencyuris,$1)),$(call sourcefile,$(patsubst -%,%,$(uri))))
# (callable) Get the list of (nonrecursive) dependencies for the given source files.
+#
+# If the file cannot have dependencies (e·g is an asset file), the resulting value will be the empty string.
override dependencies = $(foreach uri,$(filter-out -%,$(call dependencyuris,$1)),$(call sourcefile,$(uri)))
endif
@@ -453,10 +498,13 @@ ifneq ($(wildcard $(BUILDDIR)/destinations),)
override destinations := $(shell $(CAT) $(BUILDDIR)/destinations)
# Pair source files and their destinations.
-override sourcedestinationpair := $(foreach destination,$(destinations),$(call sourcefile,$(firstword $(subst |, ,$(destination))))|$(call perdec,$(subst $(space),|,$(wordlist 2,$(words $(subst |, ,$(destination))),$(subst |, ,$(destination))))))
+override sourcedestinationpair := $(foreach destination,$(destinations),$(call sourcefile,$(firstword $(subst |, ,$(destination))))|$(subst $(space),|,$(wordlist 2,$(words $(subst |, ,$(destination))),$(subst |, ,$(destination)))))
+endif
-# (callable) Get the destination for the given source files.
-override destination = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcedestinationpair))))
+# (callable) Get the destination for the given source files, or return `.NOTDEF/$1´.
+#
+# The fallback here is because destinations are used to generate targets and thus must always be non·empty and should be unique, even when they haven’t been generated yet.
+override destination = $(foreach file,$1,$(or $(patsubst $(file)|%,%,$(filter $(file)|%,$(sourcedestinationpair))),.NOTDEF/$1))
# Pair each source file with its compiled location.
override sourcecompiledpair := $(foreach file,$(sourcefiles),$(file)|$(BUILDDIR)/results/$(call destination,$(file)))
@@ -475,12 +523,11 @@ override unbuilt = $(foreach file,$1,$(call uncompiled,$(patsubst $(BUILDDIR)/pu
# (callable) Get the installed locations for the given source files.
override installed = $(foreach file,$1,$(DESTDIR)/$(call destination,$(file)))
-endif
# ─ ¶ Recipe Variable Definitions ─────────────────────────────────────
# (callable) Get the identifier for the given parser or transform.
-override id = $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $(call quote,$1) 2>>/dev/null || $(PRINTF) '%s\n' $(call quote,about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
+override id = $(XMLLINT) --noent --nonet --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $(call quote,$1) 2>>/dev/null || $(PRINTF) '%s\n' $(call quote,about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
# (callable) Sanitize and wrap the provided plaintext file in X·M·L, printing to `stdout´.
override wrapplaintext = { $(PRINTF) '%s\n%s' '' ''; }
@@ -492,6 +539,9 @@ override wrapplaintext = { $(PRINTF) '%s\n%s' '' '