abandoning GNU make pattern rules in favor of generated makefile targets

Makefile

@@ -2,8 +2,6 @@
 # the Adobe Flex "Geting Started" tutorial at:
 #    http://learn.adobe.com/wiki/display/Flex/Getting+Started
 
-include rules.mk
-
 # sets mxmlc and compc to their respective basenames
 # if not overridden in command line like so:
 #    make MXMLC=/path/to/my/mxmlc
@@ -11,20 +9,37 @@ MXMLC ?= mxmlc
 COMPC ?= compc
 
 
-# define all target swf paths (which don't yet exist if
+# define all dependency mxml paths and their swf path targets
-# they've never been built)
+# (which don't yet exist if they've never been built)
-SWFS = $(patsubst %.mxml,%.swf,$(wildcard [0-9]*-*/*.mxml))
+MXML = $(wildcard [0-9]*-*/*.mxml) $(wildcard custom-*/*.mxml)
-SWFS += $(patsubst %.mxml,%.swf,$(wildcard custom-*/*.mxml))
+SWFS = $(patsubst %.mxml,%.swf,$(MXML))
 
 
 # glob up all component files as well, since changes to them
 # should also prompt rebuild
-COMPONENTS = $(patsubst %.mxml,%.swf,$(wildcard [0-9]*-*/*.as))
+COMPONENTS = $(wildcard [0-9]*-*/*.as) $(wildcard custom-*/*.as)
-COMPONENTS += $(patsubst %.mxml,%.swf,$(wildcard custom-*/*.as))
+export COMPONENTS
+
+
+include rules.mk
+
+
+all: $(SWFS)
+
+
+include targets.mk
+
+
+components:
+	@echo $(COMPONENTS)
+
+
+mxml:
+	@echo $(MXML)
 
 
-# build all expected swf and swc files
+swfs:
-all: $(SWFS) $(COMPONENTS)
+	@echo $(SWFS)
 
 
 # remove all swf files in the tree

mktargets.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+from __future__ import print_function
+
+import os
+import re
+import sys
+import glob
+from os.path import join as pathjoin
+
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+AUTOGEN_WARNING = ('# ******** AUTOGENERATED by {0} ' +
+                   ('*' * 20)).format(os.path.basename(sys.argv[0]))
+PATTERN_RULE_MXMLC = \
+    '$(MXMLC) {firstdep} -warnings -l+={parent_dir} -output {target}'
+
+
+def main(sysargs=sys.argv[:]):
+    targets_mk = pathjoin(HERE, 'targets.mk')
+    os.chmod(targets_mk, 0600)
+    targetmaker = TargetMaker(outstream=open(targets_mk, 'wb'))
+    targetmaker.make()
+    os.chmod(targets_mk, 0444)
+    return 0
+
+
+class TargetMaker(object):
+    _to_glob = (
+        pathjoin(HERE, '[0-9]*-*', '*.mxml'),
+        pathjoin(HERE, 'custom-*', '*.mxml'),
+    )
+
+    def __init__(self, outstream=sys.stdout):
+        self.outstream = outstream
+        self.targets = {}
+
+    def make(self):
+        for pattern in self._to_glob:
+            for mxml in glob.glob(pattern):
+                self._add_target_from_mxml(mxml)
+        self._write_out_targets()
+
+    def _add_target_from_mxml(self, mxml):
+        rel_mxml = os.path.relpath(mxml, HERE)
+        as_swf = re.sub('(.*)\.mxml$', '\\1.swf', rel_mxml)
+        self.targets[as_swf] = set([rel_mxml])
+
+        as3_pattern = re.sub('(.*)/(.*)\.mxml$', '\\1/*.as', rel_mxml)
+        for local_as3 in glob.glob(as3_pattern):
+            rel_as3 = os.path.relpath(local_as3, HERE)
+            self.targets[as_swf].add(rel_as3)
+
+    def _write_out_targets(self):
+        print(AUTOGEN_WARNING, file=self.outstream)
+        for target in sorted(self.targets.iterkeys()):
+            deps = list(reversed(sorted(list(self.targets[target]),
+                            key=lambda d: os.path.splitext(d)[-1])))
+            print('{target}: {deps}'.format(target=target,
+                    deps=' '.join(deps)), file=self.outstream)
+            print('\t' +
+                PATTERN_RULE_MXMLC.format(firstdep=deps[0],
+                    parent_dir=os.path.dirname(deps[0]),
+                    target=target) +
+                '\n\n', file=self.outstream)
+
+
+if __name__ == '__main__':
+    sys.exit(main())
+
+# vim:filetype=python

targets.mk

@@ -0,0 +1,141 @@
+# ******** AUTOGENERATED by mktargets.py ********************
+01-flickr/FlickrRIA.swf: 01-flickr/FlickrRIA.mxml
+	$(MXMLC) 01-flickr/FlickrRIA.mxml -warnings -l+=01-flickr -output 01-flickr/FlickrRIA.swf
+
+
+01-flickr/FlickrThumbnail.swf: 01-flickr/FlickrThumbnail.mxml
+	$(MXMLC) 01-flickr/FlickrThumbnail.mxml -warnings -l+=01-flickr -output 01-flickr/FlickrThumbnail.swf
+
+
+02-shipping/PlainText.swf: 02-shipping/PlainText.mxml
+	$(MXMLC) 02-shipping/PlainText.mxml -warnings -l+=02-shipping -output 02-shipping/PlainText.swf
+
+
+03a1-binding-and-modeling/YahooWeather.swf: 03a1-binding-and-modeling/YahooWeather.mxml
+	$(MXMLC) 03a1-binding-and-modeling/YahooWeather.mxml -warnings -l+=03a1-binding-and-modeling -output 03a1-binding-and-modeling/YahooWeather.swf
+
+
+03a2-crud-dynamic/CRUDDynamic.swf: 03a2-crud-dynamic/CRUDDynamic.mxml 03a2-crud-dynamic/dyn-employees.as
+	$(MXMLC) 03a2-crud-dynamic/CRUDDynamic.mxml -warnings -l+=03a2-crud-dynamic -output 03a2-crud-dynamic/CRUDDynamic.swf
+
+
+03a3-crud-static/CRUDStatic.swf: 03a3-crud-static/CRUDStatic.mxml 03a3-crud-static/static-employees.as
+	$(MXMLC) 03a3-crud-static/CRUDStatic.mxml -warnings -l+=03a3-crud-static -output 03a3-crud-static/CRUDStatic.swf
+
+
+03a4-external-interface/Main.swf: 03a4-external-interface/Main.mxml
+	$(MXMLC) 03a4-external-interface/Main.mxml -warnings -l+=03a4-external-interface -output 03a4-external-interface/Main.swf
+
+
+03a5-local-connections/BasicTaskReceiver.swf: 03a5-local-connections/BasicTaskReceiver.mxml
+	$(MXMLC) 03a5-local-connections/BasicTaskReceiver.mxml -warnings -l+=03a5-local-connections -output 03a5-local-connections/BasicTaskReceiver.swf
+
+
+03a5-local-connections/TaskSender.swf: 03a5-local-connections/TaskSender.mxml
+	$(MXMLC) 03a5-local-connections/TaskSender.mxml -warnings -l+=03a5-local-connections -output 03a5-local-connections/TaskSender.swf
+
+
+03a6-shared-objects/SharedObjectExample.swf: 03a6-shared-objects/SharedObjectExample.mxml
+	$(MXMLC) 03a6-shared-objects/SharedObjectExample.mxml -warnings -l+=03a6-shared-objects -output 03a6-shared-objects/SharedObjectExample.swf
+
+
+03a7-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.swf: 03a7-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.mxml
+	$(MXMLC) 03a7-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.mxml -warnings -l+=03a7-validation-and-formatting -output 03a7-validation-and-formatting/ValidatorsandFormattersExampleWithAreaCodeLookup.swf
+
+
+03b-handling-events/TwitterTimeline.swf: 03b-handling-events/TwitterTimeline.mxml
+	$(MXMLC) 03b-handling-events/TwitterTimeline.mxml -warnings -l+=03b-handling-events -output 03b-handling-events/TwitterTimeline.swf
+
+
+03b1-event-listeners/VBoxDemo.swf: 03b1-event-listeners/VBoxDemo.mxml
+	$(MXMLC) 03b1-event-listeners/VBoxDemo.mxml -warnings -l+=03b1-event-listeners -output 03b1-event-listeners/VBoxDemo.swf
+
+
+03b2-event-propagation/DemoApplication.swf: 03b2-event-propagation/DemoApplication.mxml
+	$(MXMLC) 03b2-event-propagation/DemoApplication.mxml -warnings -l+=03b2-event-propagation -output 03b2-event-propagation/DemoApplication.swf
+
+
+03b3-simple-ui-event/Example1.swf: 03b3-simple-ui-event/Example1.mxml
+	$(MXMLC) 03b3-simple-ui-event/Example1.mxml -warnings -l+=03b3-simple-ui-event -output 03b3-simple-ui-event/Example1.swf
+
+
+03b3-simple-ui-event/Example2.swf: 03b3-simple-ui-event/Example2.mxml
+	$(MXMLC) 03b3-simple-ui-event/Example2.mxml -warnings -l+=03b3-simple-ui-event -output 03b3-simple-ui-event/Example2.swf
+
+
+03c1-application-container/Demo.swf: 03c1-application-container/Demo.mxml
+	$(MXMLC) 03c1-application-container/Demo.mxml -warnings -l+=03c1-application-container -output 03c1-application-container/Demo.swf
+
+
+03c2-box-model/HBoxExample.swf: 03c2-box-model/HBoxExample.mxml
+	$(MXMLC) 03c2-box-model/HBoxExample.mxml -warnings -l+=03c2-box-model -output 03c2-box-model/HBoxExample.swf
+
+
+03c2-box-model/VBoxExample.swf: 03c2-box-model/VBoxExample.mxml
+	$(MXMLC) 03c2-box-model/VBoxExample.mxml -warnings -l+=03c2-box-model -output 03c2-box-model/VBoxExample.swf
+
+
+03c2-box-model/VBoxHBoxCombo.swf: 03c2-box-model/VBoxHBoxCombo.mxml
+	$(MXMLC) 03c2-box-model/VBoxHBoxCombo.mxml -warnings -l+=03c2-box-model -output 03c2-box-model/VBoxHBoxCombo.swf
+
+
+03c3-canvas-absolute/Example.swf: 03c3-canvas-absolute/Example.mxml
+	$(MXMLC) 03c3-canvas-absolute/Example.mxml -warnings -l+=03c3-canvas-absolute -output 03c3-canvas-absolute/Example.swf
+
+
+03c4-canvas-relative/Photo.swf: 03c4-canvas-relative/Photo.mxml
+	$(MXMLC) 03c4-canvas-relative/Photo.mxml -warnings -l+=03c4-canvas-relative -output 03c4-canvas-relative/Photo.swf
+
+
+03c5-combined-layout/Combined.swf: 03c5-combined-layout/Combined.mxml
+	$(MXMLC) 03c5-combined-layout/Combined.mxml -warnings -l+=03c5-combined-layout -output 03c5-combined-layout/Combined.swf
+
+
+03c6-form/CommentForm.swf: 03c6-form/CommentForm.mxml
+	$(MXMLC) 03c6-form/CommentForm.mxml -warnings -l+=03c6-form -output 03c6-form/CommentForm.swf
+
+
+03c7-mxml-vs-as3/WithAs3.swf: 03c7-mxml-vs-as3/WithAs3.mxml
+	$(MXMLC) 03c7-mxml-vs-as3/WithAs3.mxml -warnings -l+=03c7-mxml-vs-as3 -output 03c7-mxml-vs-as3/WithAs3.swf
+
+
+03c7-mxml-vs-as3/WithMxml.swf: 03c7-mxml-vs-as3/WithMxml.mxml
+	$(MXMLC) 03c7-mxml-vs-as3/WithMxml.mxml -warnings -l+=03c7-mxml-vs-as3 -output 03c7-mxml-vs-as3/WithMxml.swf
+
+
+03c8-panel/Photo.swf: 03c8-panel/Photo.mxml
+	$(MXMLC) 03c8-panel/Photo.mxml -warnings -l+=03c8-panel -output 03c8-panel/Photo.swf
+
+
+03d1-datagrid/DataGridExample.swf: 03d1-datagrid/DataGridExample.mxml 03d1-datagrid/RequestParams.as 03d1-datagrid/DataGridApp.as
+	$(MXMLC) 03d1-datagrid/DataGridExample.mxml -warnings -l+=03d1-datagrid -output 03d1-datagrid/DataGridExample.swf
+
+
+03d2-item-renderers/HBoxWeatherDisplay.swf: 03d2-item-renderers/HBoxWeatherDisplay.mxml 03d2-item-renderers/WeatherApp.as
+	$(MXMLC) 03d2-item-renderers/HBoxWeatherDisplay.mxml -warnings -l+=03d2-item-renderers -output 03d2-item-renderers/HBoxWeatherDisplay.swf
+
+
+03d2-item-renderers/WeatherDisplay.swf: 03d2-item-renderers/WeatherDisplay.mxml 03d2-item-renderers/WeatherApp.as
+	$(MXMLC) 03d2-item-renderers/WeatherDisplay.mxml -warnings -l+=03d2-item-renderers -output 03d2-item-renderers/WeatherDisplay.swf
+
+
+03d3-lists/HorizontalListControl.swf: 03d3-lists/HorizontalListControl.mxml
+	$(MXMLC) 03d3-lists/HorizontalListControl.mxml -warnings -l+=03d3-lists -output 03d3-lists/HorizontalListControl.swf
+
+
+03d3-lists/ListControl.swf: 03d3-lists/ListControl.mxml
+	$(MXMLC) 03d3-lists/ListControl.mxml -warnings -l+=03d3-lists -output 03d3-lists/ListControl.swf
+
+
+03d4-tilelist/TileListExample.swf: 03d4-tilelist/TileListExample.mxml
+	$(MXMLC) 03d4-tilelist/TileListExample.mxml -warnings -l+=03d4-tilelist -output 03d4-tilelist/TileListExample.swf
+
+
+custom-03d1-datagrid/Snarf.swf: custom-03d1-datagrid/Snarf.mxml custom-03d1-datagrid/CustomApp.as
+	$(MXMLC) custom-03d1-datagrid/Snarf.mxml -warnings -l+=custom-03d1-datagrid -output custom-03d1-datagrid/Snarf.swf
+
+
+custom-03d3-lists/ListControl.swf: custom-03d3-lists/ListControl.mxml custom-03d3-lists/ListApp.as
+	$(MXMLC) custom-03d3-lists/ListControl.mxml -warnings -l+=custom-03d3-lists -output custom-03d3-lists/ListControl.swf
+
+