Use diffprereqs files as dependencies, not FORCE

[Shushe] / GNUmakefile

diff --git a/GNUmakefile b/GNUmakefile
index 3d4bf87ed64f813841a8eeedbab006f1bafdd2e0..c654ddbfcc160d9423a1858440c7bcb6cbb72b6c 100644 (file)
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -149,11 +149,21 @@ 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.
 # 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.

+#
+# This variable is also used by the two‐stage `MODE´, where it gives the include directory for the second stage.

 INCLUDEDIR := $(foreach dir,$(SRCDIR),$(dir)/includes)
 
 INCLUDEDIR := $(foreach dir,$(SRCDIR),$(dir)/includes)
 

+# The directory which contains the data files.
+#
+# Only used in the two‐stage `MODE´, and defaults to that `MODE´ if this directory exists.
+# This directory is used as the include directory in the first stage.
+#
+# Multiple directories can be given so long as files with the same name do not exist in each.
+DATADIR :=
+

 # The directory in which to generate temporary buildfiles.
 #
 # The directory in which to generate temporary buildfiles.
 #

-# This variable is also used by the archiving `MODE´.
+# This variable is also used by the archiving and two‐stage `MODE´s.

 BUILDDIR := build
 
 # The directory into which to output files on `make install´.
 BUILDDIR := build
 
 # The directory into which to output files on `make install´.


@@ -165,17 +175,28 @@ DESTDIR := public
 #
 # By default, this is inferred from the variable `MAKEFILE_LIST´.
 #
 #
 # By default, this is inferred from the variable `MAKEFILE_LIST´.
 #

-# This variable is also used by the archiving `MODE´.
+# This variable is also used by the archiving and two‐stage `MODE´s.

 THISDIR := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
 
 # Configuration of `find´.
 #
 # By default, `find´ will ignore files which begin with a period and those which are likely to cause problems for `make´.
 THISDIR := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
 
 # Configuration of `find´.
 #
 # By default, `find´ will ignore files which begin with a period and those which are likely to cause problems for `make´.

+#
+# These variables are also used by the two‐stage `MODE´.

 EXTRAFINDRULES :=
 EXTRAFINDINCLUDERULES :=
 EXTRAFINDRULES :=
 EXTRAFINDINCLUDERULES :=

-FINDRULES := ! '(' '(' -name '[.-]*' -a ! -name '.' -o -name '*[][*?:|$$%\#\\; ]*' -o -name '*[)]' ')' -a -prune ')'$(if $(EXTRAFINDRULES), -a '(' $(EXTRAFINDRULES) ')',)
+FINDRULES := '!' '(' '(' -name '[.-]*' -a '!' -name '.' -o -name '*[][*?:|$$%\#\\; ]*' -o -name '*[)]' ')' -a -prune ')'$(if $(EXTRAFINDRULES), -a '(' $(EXTRAFINDRULES) ')',)

 FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a '(' $(EXTRAFINDINCLUDERULES) ')',)
 
 FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a '(' $(EXTRAFINDINCLUDERULES) ')',)
 

+# File extensions which indicate files in `SRCDIR´ which should be built as part of the first, rather than second, stage of the two‐stage `MODE´.
+DATAEXT := rdf
+
+# Rules for identifying files in `SRCDIR´ which should be built as part of the first, rather than second, stage of the two‐stage `MODE´.
+#
+# By default, this just constructs rules from `DATAEXT´.
+EXTRAFINDDATARULES :=
+FINDDATARULES := -name '.' $(foreach ext,$(DATAEXT), -o -name '$(subst ','"'"',[!.]*.$(ext))')$(if $(EXTRAFINDDATARULES), -a '(' $(EXTRAFINDDATARULES) ')',)
+

 # The list of magic files to use when determining media types.
 #
 # Some are provided as part of this repository, but you can add more if you need different media type detection.
 # The list of magic files to use when determining media types.
 #
 # Some are provided as part of this repository, but you can add more if you need different media type detection.


@@ -233,11 +254,14 @@ endif
 # The following modes are available :—
 #
 # • ‹ urn:fdc:ladys.computer:20231231:Shu1She4:mode:default ›:
 # The following modes are available :—
 #
 # • ‹ urn:fdc:ladys.computer:20231231:Shu1She4:mode:default ›:

-#   The default mode; typical Shushe behaviours.
+#   The default mode; typical ⛩📰 书社 behaviours.

 #
 # • ‹ urn:fdc:ladys.computer:20231231:Shu1She4:mode:archive ›:
 #   Generates archive files from parse results.
 #
 # • ‹ urn:fdc:ladys.computer:20231231:Shu1She4:mode:archive ›:
 #   Generates archive files from parse results.

-MODE := urn:fdc:ladys.computer:20231231:Shu1She4:mode:default
+#
+# • ‹ urn:fdc:ladys.computer:20231231:Shu1She4:mode:_2stage ›:
+#   Two‐stage build; runs ⛩📰 书社 twice.
+MODE := urn:fdc:ladys.computer:20231231:Shu1She4:mode:$(if $(DATADIR),$(shell if $(TEST) -d $(call quote,$(DATADIR)); then $(PRINTF) '%s\n' '_2stage'; else $(PRINTF) '%s\n' 'default'; fi),default)

 
 # Set to a non·empty value to silence informative messages.
 QUIET :=
 
 # Set to a non·empty value to silence informative messages.
 QUIET :=


@@ -324,16 +348,16 @@ ifeq ($(MODE),urn:fdc:ladys.computer:20231231:Shu1She4:mode:default)
 # 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))))
 
 # 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 `$(BUILDDIR)/lastprereqs´.
-# If not, save the new value and then add FORCE.
-# Return them regardless.
+# (callable) Tests to see if the prerequisites provided by the second argument matches the value in the file corresponding to the first argument in `$(BUILDDIR)/lastprereqs´.
+# If not, saves the new value.
+# Returns the values plus the file in `$(BUILDDIR)/lastprereqs´, which will always be newer than the target if there was a change.

 #
 # 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 `$(notbuilding)´ is non·empty, this variable produces no result to avoid unnecessary work.
 #
 # ☡ This variable creates at least one subshell every time it is computed.
 #
 # Calling this variable is useful when a given target should be updated whenever its list of prerequisites changes in addition to whenever there is a change to one of its prerequisites.
 #
 # If `$(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 $(notbuilding),,$(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))
+override diffprereqs = $(if $(notbuilding),,$(and $(subst $(shell $(CAT) $(call quote,$(BUILDDIR)/lastprereqs/$1) 2>>/dev/null || :),,$2),$(shell $(call ensuredirectory,$(BUILDDIR)/lastprereqs) && $(PRINTF) '%s\n' $(call quote,$2) >|$(BUILDDIR)/lastprereqs/$1),)$2 $(BUILDDIR)/lastprereqs/$1)

 
 # (callable) Escape special characters for use in X·M·L.
 override xmlesc = $(subst >,&gt;,$(subst <,&lt;,$(subst &,&amp;,$1)))
 
 # (callable) Escape special characters for use in X·M·L.
 override xmlesc = $(subst >,&gt;,$(subst <,&lt;,$(subst &,&amp;,$1)))


@@ -589,10 +613,10 @@ FORCE : ;
 .SUFFIXES : ;
 
 # Don’t delete these files even if Make is stopped in the process of rebuilding them.
 .SUFFIXES : ;
 
 # Don’t delete these files even if Make is stopped in the process of rebuilding them.

-.PRECIOUS : GNUmakefile ;
+.PRECIOUS : $(THISDIR)/GNUmakefile ;

 
 # Phony rules; always consider these out·of·date.
 
 # Phony rules; always consider these out·of·date.

-.PHONY : FORCE all default clean gone info install list listout uninstall $(call built,$(recursivefiles)) ;
+.PHONY : FORCE all clean gone help install list listout uninstall $(call built,$(recursivefiles)) ;

 
 ifeq ($(notbuilding),)
 # Reload this make·file if the magic file, parser, dependencies, or destinations have changed.
 
 ifeq ($(notbuilding),)
 # Reload this make·file if the magic file, parser, dependencies, or destinations have changed.


@@ -707,6 +731,12 @@ endif
 
 # ─ ¶ Special Targets ─────────────────────────────────────────────────
 
 
 # ─ ¶ Special Targets ─────────────────────────────────────────────────
 

+# Don’t use any implicit rules.
+.SUFFIXES : ;
+
+# Don’t delete these files even if Make is stopped in the process of rebuilding them.
+.PRECIOUS : $(THISDIR)/GNUmakefile ;
+

 # Reload this make·file if the archive components have changed.
 $(THISDIR)/GNUmakefile : $(BUILDDIR)/index
        $(silent)$(TOUCH) $(THISDIR)/GNUmakefile
 # Reload this make·file if the archive components have changed.
 $(THISDIR)/GNUmakefile : $(BUILDDIR)/index
        $(silent)$(TOUCH) $(THISDIR)/GNUmakefile


@@ -722,10 +752,13 @@ $(BUILDDIR)/extractor.xslt : $(SRC) $(THISDIR)/lib/archive2extractor.xslt
 # Use the extractor transform to extract the archive source file out into its components.
 #
 # This target sleeps for 1 second to ensure the resulting index will always be newer than this make·file.
 # Use the extractor transform to extract the archive source file out into its components.
 #
 # This target sleeps for 1 second to ensure the resulting index will always be newer than this make·file.

+#
+# If the archive is empty, the index will not be written by `xsltproc´ and will need to be manually created.

 $(BUILDDIR)/index : $(BUILDDIR)/extractor.xslt $(SRC)
        $(call inform,$(PRINTF) '%s\n' $(call quote,Extracting components for </$(NAME)>…) >&2)
        $(silent)$(SLEEP) 1
        $(silent)$(XSLTPROC) --nonet --novalid -o $(call quote,$@) --writesubtree $(call quote,$(dir $@)) $(call quote,$<) $(call quote,$(SRC))
 $(BUILDDIR)/index : $(BUILDDIR)/extractor.xslt $(SRC)
        $(call inform,$(PRINTF) '%s\n' $(call quote,Extracting components for </$(NAME)>…) >&2)
        $(silent)$(SLEEP) 1
        $(silent)$(XSLTPROC) --nonet --novalid -o $(call quote,$@) --writesubtree $(call quote,$(dir $@)) $(call quote,$<) $(call quote,$(SRC))

+       $(silent)if $(TEST) ! -e $(call quote,$@); then $(TOUCH) $(call quote,$@); fi

 
 # All archive components are extracted alongside the index.
 $(foreach file,$(archivefiles),$(BUILDDIR)/extracted/$(file)) : $(BUILDDIR)/index ;
 
 # All archive components are extracted alongside the index.
 $(foreach file,$(archivefiles),$(BUILDDIR)/extracted/$(file)) : $(BUILDDIR)/index ;


@@ -744,7 +777,84 @@ $(DESTDIR)/% : $(SRC) $(foreach file,$(archivefiles),$(BUILDDIR)/files/$(file))
        $(call inform,$(PRINTF) '%s\n' $(call quote,Archiving </$(NAME)>…) >&2)
        $(silent)$(call ensuredirectory,$(dir $@))
        $(silent)$(RM) -f -R $(call quote,$@)
        $(call inform,$(PRINTF) '%s\n' $(call quote,Archiving </$(NAME)>…) >&2)
        $(silent)$(call ensuredirectory,$(dir $@))
        $(silent)$(RM) -f -R $(call quote,$@)

-       $(silent)$(CD) $(call quote,$(BUILDDIR)/files); if $(call xpath,/*/@*[local-name()="expanded" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$(abspath $<)); then $(MKDIR) -p $(call quote,$(abspath $@)); $(PRINTF) '%s\n' $(foreach file,$(archivefiles),$(call quote,$(file))) | $(PAX) -r -w $(call quote,$(abspath $@)); else $(PRINTF) '%s\n' $(foreach file,$(archivefiles),$(call quote,$(file))) | $(PAX) -w -x ustar >|$(call quote,$(abspath $@)); fi
+       $(silent)$(call ensuredirectory,$(BUILDDIR)/files)
+       $(silent)$(CD) $(call quote,$(BUILDDIR)/files); if $(call xpath,/*/@*[local-name()="expanded" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"],$(abspath $<)); then $(MKDIR) -p $(call quote,$(abspath $@)); $(PRINTF) '$(if $(archivefiles),%s\n,)' $(foreach file,$(archivefiles),$(call quote,$(file))) | $(PAX) -r -w $(call quote,$(abspath $@)); else $(PRINTF) '$(if $(archivefiles),%s\n,)' $(foreach file,$(archivefiles),$(call quote,$(file))) | $(PAX) -w -x ustar >|$(call quote,$(abspath $@)); fi
+
+# ━ § BEGIN TWO‐STEP MAKE·FILE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+else ifeq ($(MODE),urn:fdc:ladys.computer:20231231:Shu1She4:mode:_2stage)
+
+# ─ ¶ Non‐Recipe Variable Definitions ─────────────────────────────────
+
+override makefile := $(abspath $(THISDIR)/GNUmakefile)
+
+# (overridable) Options to use when calling ⛩📰 书社 the first time.
+shushedataopts := INCLUDEDIR=$(call quote,$(DATADIR)) BUILDDIR=$(call quote,$(BUILDDIR)/stage1) DESTDIR=$(call quote,$(BUILDDIR)/data) FINDRULES=$(call quote,$(FINDRULES) -a '(' $(FINDDATARULES) ')') FINDINCLUDERULES=$(call quote,$(FINDINCLUDERULES)) MODE='urn:fdc:ladys.computer:20231231:Shu1She4:mode:default'
+
+# (overridable) Options to use when calling ⛩📰 书社 the second time.
+shushesiteopts := INCLUDEDIR=$(call quote,$(INCLUDEDIR) $(BUILDDIR)/data) BUILDDIR=$(call quote,$(BUILDDIR)/stage2) FINDRULES=$(call quote,$(FINDRULES) -a '!' '(' $(FINDDATARULES) ')') FINDINCLUDERULES=$(call quote,$(FINDINCLUDERULES)) MODE='urn:fdc:ladys.computer:20231231:Shu1She4:mode:default'
+
+# ─ ¶ Recipe Variable Definitions ─────────────────────────────────────
+
+# ─ ¶ Phony Targets ───────────────────────────────────────────────────
+
+# Compile all files, or error if any are recursive.
+all : data
+       @$(MAKE) -f $(call quote,$(makefile)) $(shushesiteopts)
+
+# Destroy buildfiles.
+clean :
+       $(if $(BUILDDIR),$(silent)$(RM) -f -R $(call quote,$(BUILDDIR)/),)
+
+# Build the data and remove outdated data files.
+data : $(BUILDDIR)/data.out
+       @$(MAKE) -f $(call quote,$(makefile)) install $(shushedataopts)
+       $(silent)$(FIND) $(call quote,$(BUILDDIR)/data) '!' -exec $(GREP) -F -q -x '{}' $(call quote,$<) ';' -a '(' -type d -o -print ')' | $(xargsmultiquote) | $(XARGS) -E '' $(RM)
+
+# Destroy build directory and installed files.
+gone : clean uninstall ;
+
+# Install the compiled files into `DESTDIR´.
+install : all
+       @$(MAKE) -f $(call quote,$(makefile)) $@ $(shushesiteopts)
+       @$(MAKE) -f $(call quote,$(makefile)) $(foreach dest,$(patsubst $(BUILDDIR)/data/%,$(DESTDIR)/%,$(shell $(CAT) $(call quote,$(BUILDDIR)/data.out))),$(call quote,$(dest)))
+
+# List all source files and includes and their computed types.
+list listout : data
+       @$(MAKE) -f $(call quote,$(makefile)) $@ $(shushesiteopts)
+
+# Destroy installed files.
+uninstall :
+       @$(MAKE) -f $(call quote,$(makefile)) $@ $(shushesiteopts)
+
+# Add as a prerequisite to treat the target as tho it were phony.
+FORCE : ;
+
+# ─ ¶ Special Targets ─────────────────────────────────────────────────
+
+# Don’t use any implicit rules.
+.SUFFIXES : ;
+
+# Phony rules; always consider these out·of·date.
+.PHONY : FORCE all data clean gone install list listout uninstall ;
+
+# ─ ¶ Build Targets ───────────────────────────────────────────────────
+
+$(BUILDDIR)/data.out : FORCE
+       @$(MAKE) -f $(call quote,$(makefile)) $(shushedataopts)
+       @$(MAKE) -s -f $(call quote,$(makefile)) listout QUIET=1 $(shushedataopts) | $(TR) ' ' '\n' | $(xargsmultiquote) | $(XARGS) -E '' $(PRINTF) $(call quote,$(BUILDDIR)/data/%s\n) >$(call quote,$(BUILDDIR)/data.out)
+
+$(BUILDDIR)/stage1/% : FORCE
+       @$(MAKE) -f $(call quote,$(makefile)) $@ $(shushedataopts)
+
+$(BUILDDIR)/data/% : FORCE
+       @$(MAKE) -f $(call quote,$(makefile)) $@ $(shushedataopts)
+
+$(BUILDDIR)/stage2/% : data
+       @$(MAKE) -f $(call quote,$(makefile)) $@ $(shushesiteopts)
+
+$(DESTDIR)/% : data
+       $(if $(shell $(GREP) -F -x $(call quote,$(BUILDDIR)/data/$*) $(BUILDDIR)/data.out),$(call inform $(PRINTF) '%s\n' $(call quote,Copying over </$*>…) >&2)$(newline),$(CP) $(call quote,$(BUILDDIR)/data/$*) $(call quote,$@),@$(MAKE) -f $(call quote,$(makefile)) $@ $(shushesiteopts))

 
 # ━ § END DEFINED MAKE·FILE MODES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 
 
 # ━ § END DEFINED MAKE·FILE MODES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━