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1 | ################################################################################ |
2 | # | |
3 | # Makefile for the Swift implementation of MAL. | |
4 | # | |
5 | # The MAL project consists of building up a dialect/subset of Clojure over a | |
6 | # series of steps. Each step implements a new feature or concept in an easily | |
7 | # understandable and approachable manner. Each step can be built on its own and | |
8 | # tested. Each step is built from a step-specific "step.swift" file and a set | |
9 | # of files common to all steps. | |
10 | # | |
11 | # The general approach in this file is to discover the set of "step" source | |
12 | # files (step0_repl.swift, etc.), and build corresponding executable files | |
13 | # (step0_repl, etc) from them and from the set of supporting Swift files. | |
14 | # Since the set of "step" files is discovered on-the-fly, the rules to make | |
15 | # those files are also generated on-the-fly using $(eval). | |
16 | # | |
17 | # The various "step0_repl.swift", etc., source files are actually generated | |
18 | # from a file called "templates/step.swift". Since each "step" file | |
19 | # incrementally builds towards the final, complete "step" file, | |
20 | # "templates/step.swift" is -- for the most part -- a copy of this final "step" | |
21 | # file with each line annotated with the step in which that line is introduced. | |
22 | # Through the use of a simple filter program, the "templates/step.swift" file | |
23 | # can then be processed to produce each intermediate "step" file. This Makefile | |
24 | # takes care of performing that processing any time "templates/step.swift" | |
25 | # changes. | |
26 | # | |
27 | # MAKE TARGETS: | |
28 | # | |
29 | # all: | |
30 | # Make all step targets, (re)generating source files if needed. | |
31 | # alls: | |
32 | # (Re)generate source files, if needed. | |
33 | # step0_repl, step1_read_print, etc.: | |
34 | # Make the corresponding step target. | |
35 | # s0...sN: | |
36 | # Shortcuts for the previous targets. | |
37 | # step0_repl.swift, step1_read_print.swift, etc.: | |
38 | # (Re)generate source files for the corresponding step target, if | |
39 | # needed. | |
40 | # ss0...ssN: | |
41 | # Shortcuts for the previous targets. | |
42 | # clean: | |
43 | # Delete all built executables. Generated source files are *not* | |
44 | # deleted. | |
45 | # dump: | |
46 | # Print some Make variables for debugging. | |
47 | # | |
48 | # TODO: | |
49 | # * Compile each .swift file into an intermediate .o file and link the .o | |
50 | # files, rather than performing a complete build of all files any time | |
51 | # any one of them is out-of-date. Here are the commands generated when | |
52 | # using `swiftc -v`: | |
53 | # | |
54 | # /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift \ | |
55 | # -frontend \ | |
56 | # -c \ | |
57 | # -primary-file stepA_mal.swift \ | |
58 | # ./core.swift \ | |
59 | # ./env.swift \ | |
60 | # ./main.swift \ | |
61 | # ./printer.swift \ | |
62 | # ./reader.swift \ | |
63 | # ./readline.swift \ | |
64 | # ./types.swift \ | |
65 | # -target x86_64-apple-darwin14.1.0 \ | |
66 | # -target-cpu core2 \ | |
67 | # -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk \ | |
68 | # -import-objc-header ./bridging-header.h \ | |
69 | # -color-diagnostics \ | |
70 | # -Onone \ | |
71 | # -ledit \ | |
72 | # -module-name stepA_mal \ | |
73 | # -o /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/stepA_mal-e0a836.o | |
74 | # ... Similar for each source file... | |
75 | # /usr/bin/ld \ | |
76 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/stepA_mal-e0a836.o \ | |
77 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/core-28b620.o \ | |
78 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/env-5d8422.o \ | |
79 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/main-e79633.o \ | |
80 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/printer-cdd3e5.o \ | |
81 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/reader-bb188a.o \ | |
82 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/readline-53df55.o \ | |
83 | # /var/folders/dj/p3tx6v852sl88g79qvhhc2ch0000gp/T/types-7cb250.o \ | |
84 | # -L /usr/lib \ | |
85 | # -ledit \ | |
86 | # -syslibroot \ | |
87 | # /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk \ | |
88 | # -lSystem \ | |
89 | # -arch x86_64 \ | |
90 | # -L /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx \ | |
91 | # -rpath /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx \ | |
92 | # -macosx_version_min 10.10.0 \ | |
93 | # -no_objc_category_merging \ | |
94 | # -o stepA_mal | |
95 | # | |
96 | # * Consider adding a clean-dist (or similar) that deletes the generated | |
97 | # "step" source files. | |
98 | # | |
99 | ################################################################################ | |
100 | ||
101 | # | |
102 | # Discover the set of "step" source files (those having the form | |
103 | # "step<#>_foo.swift") | |
104 | # | |
105 | SRCS := $(wildcard ./step*.swift) | |
106 | ||
107 | # | |
108 | # From the set of "step" source files, generate the set of executable files | |
109 | # (those having the form "step<#>_foo") | |
110 | # | |
111 | EXES := $(patsubst %.swift,%,$(SRCS)) | |
112 | ||
425305df KR |
113 | # |
114 | # Also generate references to any debug-symbol directories we may make when -g | |
115 | # is specified. | |
116 | # | |
117 | DSYMS := $(patsubst %.swift,%.dSYM,$(SRCS)) | |
118 | ||
2539e6af KR |
119 | # |
120 | # Given a name like "./step<#>_foo", return <#>. | |
121 | # | |
122 | # (Is there a better way to do this? $(patsubst) seems to be the most | |
123 | # appropriate built-in command, but it doesn't seem powerful enough.) | |
124 | # | |
125 | # (I've included a `sed` version in case relying on bash is contraindicated.) | |
126 | # | |
ea25808e JM |
127 | get_step_number = $(shell echo $(1) | sed -e "s/.*step\(.\).*/\1/") |
128 | #get_step_number = $(shell [[ $(1) =~ step(.)_.* ]] ; echo $${BASH_REMATCH[1]}) | |
2539e6af KR |
129 | |
130 | # | |
131 | # Working from the list of discovered "step<#>_foo.swift" files, generate the | |
132 | # list of step numbers. | |
133 | # | |
134 | get_all_step_numbers = $(foreach SRC,$(SRCS),$(call get_step_number,$(SRC))) | |
135 | ||
136 | # | |
137 | # Generate the dependencies for the "all" target. This list has the form | |
138 | # "s0 s1 ... sN" for all N returned by get_all_step_numbers. That is: | |
139 | # | |
140 | # all: s0 s1 ... sN | |
141 | # | |
142 | # Also create an "alls" target that just regenerates all the "step" files from | |
143 | # the corresponding template file. | |
144 | # | |
145 | $(eval all: $(patsubst %,s%,$(call get_all_step_numbers))) | |
146 | $(eval alls: $(patsubst %,ss%,$(call get_all_step_numbers))) | |
147 | ||
148 | # | |
149 | # Generate the dependencies for the ".PHONY" target. That is: | |
150 | # | |
151 | # .PHONY: all clean dump s0 s1 ... sN | |
152 | # | |
153 | $(eval .PHONY: all clean dump $(patsubst %,s%,$(call get_all_step_numbers))) | |
154 | ||
155 | # | |
156 | # Define the "EZ" targets, where "s0" builds "step0_repl", "s1" builds | |
157 | # "step1_read_print", etc. That is: | |
158 | # | |
159 | # s0: step0_repl | |
160 | # s1: step1_read_print | |
161 | # ... | |
162 | # sN: stepN_foo | |
163 | # | |
164 | # Also create corresponding targets that rebuild the sources files: | |
165 | # | |
166 | # ss0: step0_repl.swift | |
167 | # ss1: step1_read_print.swift | |
168 | # ... | |
169 | # ssN: stepN_foo.swift | |
170 | # | |
171 | $(foreach EXE,$(EXES),$(eval s$(call get_step_number,$(EXE)): $(EXE))) | |
172 | $(foreach SRC,$(SRCS),$(eval ss$(call get_step_number,$(SRC)): $(SRC))) | |
173 | ||
174 | # | |
175 | # Various helpful variables. | |
176 | # | |
425305df | 177 | DEV_DIR := $(firstword $(wildcard /Applications/Xcode-beta.app /Applications/Xcode.app)) |
ea25808e JM |
178 | SWIFT := $(shell DEVELOPER_DIR="$(DEV_DIR)" xcrun --find swiftc 2>/dev/null) |
179 | SDKROOT := $(shell DEVELOPER_DIR="$(DEV_DIR)" xcrun --show-sdk-path 2>/dev/null) | |
2539e6af KR |
180 | STEP_TEMPLATE := ./templates/step.swift |
181 | FILTER := ./templates/filter_steps.sh | |
182 | UTIL_SRC := $(filter-out $(STEP_TEMPLATE) $(SRCS),$(wildcard ./*.swift)) | |
425305df KR |
183 | ifndef TYPES |
184 | TYPES := CLASS | |
185 | endif | |
186 | ifeq ($(TYPES), ENUM) | |
187 | UTIL_SRC := $(filter-out ./types_class.swift,$(UTIL_SRC)) | |
188 | else | |
189 | UTIL_SRC := $(filter-out ./types_enum.swift,$(UTIL_SRC)) | |
190 | endif | |
191 | OPT := -Ounchecked -whole-module-optimization | |
2539e6af KR |
192 | DEBUG := #-g |
193 | EXTRA := #-v | |
194 | COMMON := $(UTIL_SRC) $(OPT) $(DEBUG) $(EXTRA) -import-objc-header ./bridging-header.h -L /usr/lib -ledit -sdk $(SDKROOT) | |
195 | ||
196 | # | |
197 | # Build the executable from the input sources consisting of the appropriate | |
198 | # "step" file and the supporting files in $(UTIL_SRC). | |
199 | # | |
425305df | 200 | $(EXES) : % : %.swift $(UTIL_SRC) ./Makefile |
2539e6af KR |
201 | @echo "Making : $@" |
202 | @$(SWIFT) $< $(COMMON) -o $@ | |
203 | ||
204 | # | |
205 | # Build the "step" source file ("step<#>_foo.swift") from the step template | |
206 | # file that combines all the steps in one file. | |
207 | # | |
208 | $(SRCS) : % : $(STEP_TEMPLATE) ./Makefile | |
209 | @echo "Generating: $@" | |
210 | @$(FILTER) $(call get_step_number,$@) $< $@ | |
211 | ||
212 | # | |
425305df | 213 | # Delete all of the build output (other than generated "step" source files) |
2539e6af KR |
214 | # |
215 | clean: | |
425305df | 216 | @rm -rf $(EXES) $(DSYMS) |
2539e6af KR |
217 | |
218 | # | |
219 | # Display some variables for debugging. | |
220 | # | |
221 | dump: | |
222 | @echo " SRCS = $(SRCS)" | |
223 | @echo " EXES = $(EXES)" | |
425305df | 224 | @echo " DSYMS = $(DSYMS)" |
2539e6af | 225 | @echo " UTIL = $(UTIL_SRC)" |
425305df | 226 | @echo " SWIFT = $(SWIFT)" |
2539e6af KR |
227 | @echo "SDKROOT = $(SDKROOT)" |
228 | @echo " STEPS = $(call get_all_step_numbers)" |