Add FINDFILTER⸺ variables

[Shushe] / GNUmakefile

diff --git a/GNUmakefile b/GNUmakefile
index ca6bfcdb64401def581d782d93418874d92795c5..a9cf3b803a28e6a83e53ae4d7f9a4fdba3dd6c8e 100644 (file)
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -197,6 +197,46 @@ DATAEXT := rdf
 EXTRAFINDDATARULES :=
 FINDDATARULES := -name '.' $(foreach ext,$(DATAEXT), -o -name '$(subst ','"'"',[!.]*.$(ext))')$(if $(EXTRAFINDDATARULES), -a '(' $(EXTRAFINDDATARULES) ')',)
 
+# A semicolon‐separated list of regular expressions which paths should be required to match when finding files.
+FINDFILTERONLY :=
+
+# A semicolon‐separated list of regular expressions for paths which should be filtered out when finding files.
+FINDFILTEROUT :=
+
+# A semicolon‐separated list of regular expressions for paths which paths should be required to match when finding includes.
+#
+# This is generally only useful when `SRCDIR´ and `INCLUDEDIR´ point to the same location.
+# In that situation, this variable can be used to select certain files as includes, leaving the others to be recognized as sources instead.
+#
+# Otherwise, appropriately constructing `FINDFILTERONLY´ to look at the base directory of the files it finds should be sufficient.
+FINDINCLUDEFILTERONLY :=
+
+# A semicolon‐separated list of regular expressions for paths which should be filtered out in addition to those in `FINDFILTEROUT´ when finding includes.
+#
+# This is generally only useful when `SRCDIR´ and `INCLUDEDIR´ point to the same location.
+# In that situation, this variable can be used to exclude certain files from being recognized as includes, which will make them recognized as sources instead.
+#
+# Otherwise, appropriately constructing `FINDFILTEROUT´ to look at the base directory of the files it finds should be sufficient.
+FINDINCLUDEFILTEROUT :=
+
+# If not empty, the regular expression provided by `FINDFILTERONLY´ is an extended regular expression.
+FINDFILTERONLYEXTENDED :=
+
+# If not empty, the regular expression provided by `FINDFILTEROUT´ is an extended regular expression.
+#
+# By default, this matches `FINDFILTERONLYEXTENDED´
+FINDFILTEROUTEXTENDED :=  $(FINDFILTERONLYEXTENDED)
+
+# If not empty, the regular expression provided by `FINDFILTEROUT´ is an extended regular expression.
+#
+# By default, this matches `FINDFILTERONLYEXTENDED´
+FINDINCLUDEFILTERONLYEXTENDED :=  $(FINDFILTERONLYEXTENDED)
+
+# If not empty, the regular expression provided by `FINDINCLUDEFILTEROUT´ is an extended regular expression.
+#
+# By default, this matches `FINDFILTEROUTEXTENDED´
+FINDINCLUDEFILTEROUTEXTENDED := $(and $(FINDFILTERONLYEXTENDED),$(FINDFILTEROUTEXTENDED),1)
+
 # 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.
@@ -403,10 +443,10 @@ override attresc = $(subst ",",$(call xmlesc,$1))
 override sedesc = $(subst /,[/],$(subst $$,\$$,$(subst *,\*,$(subst .,\.,$(subst [,\[,$(subst ^,\^,$(subst \,\\,$1)))))))
 
 # (overridable) Collect all of the applicable includes from the includes directory.
-sourceincludes := $(if $(and $(INCLUDEDIR),$(wildcard $(INCLUDEDIR))),$(patsubst ./%,%,$(shell $(FIND) $(foreach dir,$(INCLUDEDIR),$(call quote,$(dir))) '(' $(FINDINCLUDERULES) ')' -a -type f -a -print)),)
+sourceincludes := $(foreach dir,$(INCLUDEDIR),$(and $(dir),$(wildcard $(dir)),$(patsubst ./%,%,$(shell $(FIND) $(call quote,$(dir)) '(' $(FINDINCLUDERULES) ')' -a -type f -a -print$(and $(FINDFILTERONLY),$(space)| $(GREP)$(and $(FINDFILTERONLYEXTENDED),$(space)-E) $(foreach filter,$(shell $(PRINTF) '%s\n' $(call quote,$(FINDFILTERONLY)) | $(TR) ' ;' '; '),-e $(call quote,$(subst ;, ,$(filter)))))$(and $(FINDINCLUDEFILTERONLY),$(space)| $(GREP)$(and $(FINDINCLUDEFILTERONLYEXTENDED),$(space)-E) $(foreach filter,$(shell $(PRINTF) '%s\n' $(call quote,$(FINDINCLUDEFILTERONLY)) | $(TR) ' ;' '; '),-e $(call quote,$(subst ;, ,$(filter)))))$(and $(FINDFILTEROUT),$(space)| $(GREP)$(and $(FINDFILTEROUTEXTENDED),$(space)-E) -v $(foreach filter,$(shell $(PRINTF) '%s\n' $(call quote,$(FINDFILTEROUT)) | $(TR) ' ;' '; '),-e $(call quote,$(subst ;, ,$(filter)))))$(and $(FINDINCLUDEFILTEROUT),$(space)| $(GREP)$(and $(FINDINCLUDEFILTEROUTEXTENDED),$(space)-E) -v $(foreach filter,$(shell $(PRINTF) '%s\n' $(call quote,$(FINDINCLUDEFILTEROUT)) | $(TR) ' ;' '; '),-e $(call quote,$(subst ;, ,$(filter)))))))))
 
 # (overridable) Collect all of the applicable source files from the source directory, removing any which are also includes.
-sourcefiles := $(if $(and $(SRCDIR),$(wildcard $(SRCDIR))),$(filter-out $(sourceincludes),$(patsubst ./%,%,$(shell $(FIND) $(foreach dir,$(SRCDIR),$(call quote,$(dir))) '(' $(FINDRULES) ')' -a -type f -a -print))))
+sourcefiles := $(filter-out $(sourceincludes),$(foreach dir,$(SRCDIR),$(and $(dir),$(wildcard $(dir)),$(patsubst ./%,%,$(shell $(FIND) $(call quote,$(dir)) '(' $(FINDRULES) ')' -a -type f -a -print$(and $(FINDFILTERONLY),$(space)| $(GREP)$(and $(FINDFILTERONLYEXTENDED),$(space)-E) $(foreach filter,$(shell $(PRINTF) '%s\n' $(call quote,$(FINDFILTERONLY)) | $(TR) ' ;' '; '),-e $(call quote,$(subst ;, ,$(filter)))))$(and $(FINDFILTEROUT),$(space)| $(GREP)$(and $(FINDFILTEROUTEXTENDED),$(space)-E) -v $(foreach filter,$(shell $(PRINTF) '%s\n' $(call quote,$(FINDFILTEROUT)) | $(TR) ' ;' '; '),-e $(call quote,$(subst ;, ,$(filter))))))))))
 
 # Figure out the file type of each source file and source include.
 ifneq ($(wildcard $(BUILDDIR)/magic.mgc),)