aboutsummaryrefslogtreecommitdiffstats
path: root/core/deps.mk
blob: d6974bf9cbcb508f64904a96174562f9419898fd (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
# Copyright (c) 2013-2016, Loïc Hoguin <[email protected]>
# This file is part of erlang.mk and subject to the terms of the ISC License.

.PHONY: distclean-deps clean-tmp-deps.log

# Configuration.

ifdef OTP_DEPS
$(warning The variable OTP_DEPS is deprecated in favor of LOCAL_DEPS.)
endif

IGNORE_DEPS ?=
export IGNORE_DEPS

APPS_DIR ?= $(CURDIR)/apps
export APPS_DIR

DEPS_DIR ?= $(CURDIR)/deps
export DEPS_DIR

REBAR_DEPS_DIR = $(DEPS_DIR)
export REBAR_DEPS_DIR

# External "early" plugins (see core/plugins.mk for regular plugins).
# They both use the core_dep_plugin macro.

define core_dep_plugin
ifeq ($(2),$(PROJECT))
-include $$(patsubst $(PROJECT)/%,%,$(1))
else
-include $(DEPS_DIR)/$(1)

$(DEPS_DIR)/$(1): $(DEPS_DIR)/$(2) ;
endif
endef

DEP_EARLY_PLUGINS ?=

$(foreach p,$(DEP_EARLY_PLUGINS),\
	$(eval $(if $(findstring /,$p),\
		$(call core_dep_plugin,$p,$(firstword $(subst /, ,$p))),\
		$(call core_dep_plugin,$p/early-plugins.mk,$p))))

dep_name = $(if $(dep_$(1)),$(1),$(if $(pkg_$(1)_name),$(pkg_$(1)_name),$(1)))
dep_repo = $(patsubst git://github.com/%,https://github.com/%, \
	$(if $(dep_$(1)),$(word 2,$(dep_$(1))),$(pkg_$(1)_repo)))
dep_commit = $(if $(dep_$(1)_commit),$(dep_$(1)_commit),$(if $(dep_$(1)),$(word 3,$(dep_$(1))),$(pkg_$(1)_commit)))

LOCAL_DEPS_DIRS = $(foreach a,$(LOCAL_DEPS),$(if $(wildcard $(APPS_DIR)/$(a)),$(APPS_DIR)/$(a)))
ALL_APPS_DIRS = $(if $(wildcard $(APPS_DIR)/),$(filter-out $(APPS_DIR),$(shell find $(APPS_DIR) -maxdepth 1 -type d)))
ALL_DEPS_DIRS = $(addprefix $(DEPS_DIR)/,$(foreach dep,$(filter-out $(IGNORE_DEPS),$(BUILD_DEPS) $(DEPS)),$(call dep_name,$(dep))))

ifeq ($(filter $(APPS_DIR) $(DEPS_DIR),$(subst :, ,$(ERL_LIBS))),)
ifeq ($(ERL_LIBS),)
	ERL_LIBS = $(APPS_DIR):$(DEPS_DIR)
else
	ERL_LIBS := $(ERL_LIBS):$(APPS_DIR):$(DEPS_DIR)
endif
endif
export ERL_LIBS

export NO_AUTOPATCH

# Verbosity.

dep_verbose_0 = @echo " DEP   $1 ($(call dep_commit,$1))";
dep_verbose_2 = set -x;
dep_verbose = $(dep_verbose_$(V))

# Core targets.

apps:: $(ALL_APPS_DIRS) clean-tmp-deps.log
ifeq ($(IS_APP)$(IS_DEP),)
	$(verbose) rm -f $(ERLANG_MK_TMP)/apps.log
endif
	$(verbose) mkdir -p $(ERLANG_MK_TMP)
# Create ebin directory for all apps to make sure Erlang recognizes them
# as proper OTP applications when using -include_lib. This is a temporary
# fix, a proper fix would be to compile apps/* in the right order.
ifndef IS_APP
	$(verbose) set -e; for dep in $(ALL_APPS_DIRS) ; do \
		mkdir -p $$dep/ebin; \
	done
endif
# at the toplevel: if LOCAL_DEPS is defined with at least one local app, only
# compile that list of apps. otherwise, compile everything.
# within an app: compile all LOCAL_DEPS that are (uncompiled) local apps
	$(verbose) set -e; for dep in $(if $(LOCAL_DEPS_DIRS)$(IS_APP),$(LOCAL_DEPS_DIRS),$(ALL_APPS_DIRS)) ; do \
		if grep -qs ^$$dep$$ $(ERLANG_MK_TMP)/apps.log; then \
			:; \
		else \
			echo $$dep >> $(ERLANG_MK_TMP)/apps.log; \
			$(MAKE) -C $$dep IS_APP=1; \
		fi \
	done

clean-tmp-deps.log:
ifeq ($(IS_APP)$(IS_DEP),)
	$(verbose) rm -f $(ERLANG_MK_TMP)/deps.log
endif

ifneq ($(SKIP_DEPS),)
deps::
else
deps:: $(ALL_DEPS_DIRS) apps clean-tmp-deps.log
	$(verbose) mkdir -p $(ERLANG_MK_TMP)
	$(verbose) set -e; for dep in $(ALL_DEPS_DIRS) ; do \
		if grep -qs ^$$dep$$ $(ERLANG_MK_TMP)/deps.log; then \
			:; \
		else \
			echo $$dep >> $(ERLANG_MK_TMP)/deps.log; \
			if [ -f $$dep/GNUmakefile ] || [ -f $$dep/makefile ] || [ -f $$dep/Makefile ]; then \
				$(MAKE) -C $$dep IS_DEP=1; \
			else \
				echo "Error: No Makefile to build dependency $$dep." >&2; \
				exit 2; \
			fi \
		fi \
	done
endif

# Deps related targets.

# @todo rename GNUmakefile and makefile into Makefile first, if they exist
# While Makefile file could be GNUmakefile or makefile,
# in practice only Makefile is needed so far.
define dep_autopatch
	if [ -f $(DEPS_DIR)/$(1)/erlang.mk ]; then \
		rm -rf $(DEPS_DIR)/$1/ebin/; \
		$(call erlang,$(call dep_autopatch_appsrc.erl,$(1))); \
		$(call dep_autopatch_erlang_mk,$(1)); \
	elif [ -f $(DEPS_DIR)/$(1)/Makefile ]; then \
		if [ -f $(DEPS_DIR)/$1/rebar.lock ]; then \
			$(call dep_autopatch2,$1); \
		elif [ 0 != `grep -c "include ../\w*\.mk" $(DEPS_DIR)/$(1)/Makefile` ]; then \
			$(call dep_autopatch2,$(1)); \
		elif [ 0 != `grep -ci "^[^#].*rebar" $(DEPS_DIR)/$(1)/Makefile` ]; then \
			$(call dep_autopatch2,$(1)); \
		elif [ -n "`find $(DEPS_DIR)/$(1)/ -type f -name \*.mk -not -name erlang.mk -exec grep -i "^[^#].*rebar" '{}' \;`" ]; then \
			$(call dep_autopatch2,$(1)); \
		fi \
	else \
		if [ ! -d $(DEPS_DIR)/$(1)/src/ ]; then \
			$(call dep_autopatch_noop,$(1)); \
		else \
			$(call dep_autopatch2,$(1)); \
		fi \
	fi
endef

define dep_autopatch2
	! test -f $(DEPS_DIR)/$1/ebin/$1.app || \
	mv -n $(DEPS_DIR)/$1/ebin/$1.app $(DEPS_DIR)/$1/src/$1.app.src; \
	rm -f $(DEPS_DIR)/$1/ebin/$1.app; \
	if [ -f $(DEPS_DIR)/$1/src/$1.app.src.script ]; then \
		$(call erlang,$(call dep_autopatch_appsrc_script.erl,$(1))); \
	fi; \
	$(call erlang,$(call dep_autopatch_appsrc.erl,$(1))); \
	if [ -f $(DEPS_DIR)/$(1)/rebar -o -f $(DEPS_DIR)/$(1)/rebar.config -o -f $(DEPS_DIR)/$(1)/rebar.config.script -o -f $(DEPS_DIR)/$1/rebar.lock ]; then \
		$(call dep_autopatch_fetch_rebar); \
		$(call dep_autopatch_rebar,$(1)); \
	else \
		$(call dep_autopatch_gen,$(1)); \
	fi
endef

define dep_autopatch_noop
	printf "noop:\n" > $(DEPS_DIR)/$(1)/Makefile
endef

# Replace "include erlang.mk" with a line that will load the parent Erlang.mk
# if given. Do it for all 3 possible Makefile file names.
ifeq ($(NO_AUTOPATCH_ERLANG_MK),)
define dep_autopatch_erlang_mk
	for f in Makefile makefile GNUmakefile; do \
		if [ -f $(DEPS_DIR)/$1/$$f ]; then \
			sed -i.bak s/'include *erlang.mk'/'include $$(if $$(ERLANG_MK_FILENAME),$$(ERLANG_MK_FILENAME),erlang.mk)'/ $(DEPS_DIR)/$1/$$f; \
		fi \
	done
endef
else
define dep_autopatch_erlang_mk
	:
endef
endif

define dep_autopatch_gen
	printf "%s\n" \
		"ERLC_OPTS = +debug_info" \
		"include ../../erlang.mk" > $(DEPS_DIR)/$(1)/Makefile
endef

define dep_autopatch_fetch_rebar
	mkdir -p $(ERLANG_MK_TMP); \
	if [ ! -d $(ERLANG_MK_TMP)/rebar ]; then \
		git clone -q -n -- https://github.com/rebar/rebar $(ERLANG_MK_TMP)/rebar; \
		cd $(ERLANG_MK_TMP)/rebar; \
		git checkout -q 576e12171ab8d69b048b827b92aa65d067deea01; \
		$(MAKE); \
		cd -; \
	fi
endef

define dep_autopatch_rebar
	if [ -f $(DEPS_DIR)/$(1)/Makefile ]; then \
		mv $(DEPS_DIR)/$(1)/Makefile $(DEPS_DIR)/$(1)/Makefile.orig.mk; \
	fi; \
	$(call erlang,$(call dep_autopatch_rebar.erl,$(1))); \
	rm -f $(DEPS_DIR)/$(1)/ebin/$(1).app
endef

define dep_autopatch_rebar.erl
	application:load(rebar),
	application:set_env(rebar, log_level, debug),
	rmemo:start(),
	Conf1 = case file:consult("$(call core_native_path,$(DEPS_DIR)/$1/rebar.config)") of
		{ok, Conf0} -> Conf0;
		_ -> []
	end,
	{Conf, OsEnv} = fun() ->
		case filelib:is_file("$(call core_native_path,$(DEPS_DIR)/$1/rebar.config.script)") of
			false -> {Conf1, []};
			true ->
				Bindings0 = erl_eval:new_bindings(),
				Bindings1 = erl_eval:add_binding('CONFIG', Conf1, Bindings0),
				Bindings = erl_eval:add_binding('SCRIPT', "$(call core_native_path,$(DEPS_DIR)/$1/rebar.config.script)", Bindings1),
				Before = os:getenv(),
				{ok, Conf2} = file:script("$(call core_native_path,$(DEPS_DIR)/$1/rebar.config.script)", Bindings),
				{Conf2, lists:foldl(fun(E, Acc) -> lists:delete(E, Acc) end, os:getenv(), Before)}
		end
	end(),
	Write = fun (Text) ->
		file:write_file("$(call core_native_path,$(DEPS_DIR)/$1/Makefile)", Text, [append])
	end,
	Escape = fun (Text) ->
		re:replace(Text, "\\\\$$", "\$$$$", [global, {return, list}])
	end,
	Write("IGNORE_DEPS += edown eper eunit_formatters meck node_package "
		"rebar_lock_deps_plugin rebar_vsn_plugin reltool_util\n"),
	Write("C_SRC_DIR = /path/do/not/exist\n"),
	Write("C_SRC_TYPE = rebar\n"),
	Write("DRV_CFLAGS = -fPIC\nexport DRV_CFLAGS\n"),
	Write(["ERLANG_ARCH = ", rebar_utils:wordsize(), "\nexport ERLANG_ARCH\n"]),
	ToList = fun
		(V) when is_atom(V) -> atom_to_list(V);
		(V) when is_list(V) -> "'\\"" ++ V ++ "\\"'"
	end,
	fun() ->
		Write("ERLC_OPTS = +debug_info\nexport ERLC_OPTS\n"),
		case lists:keyfind(erl_opts, 1, Conf) of
			false -> ok;
			{_, ErlOpts} ->
				lists:foreach(fun
					({d, D}) ->
						Write("ERLC_OPTS += -D" ++ ToList(D) ++ "=1\n");
					({d, DKey, DVal}) ->
						Write("ERLC_OPTS += -D" ++ ToList(DKey) ++ "=" ++ ToList(DVal) ++ "\n");
					({i, I}) ->
						Write(["ERLC_OPTS += -I ", I, "\n"]);
					({platform_define, Regex, D}) ->
						case rebar_utils:is_arch(Regex) of
							true -> Write("ERLC_OPTS += -D" ++ ToList(D) ++ "=1\n");
							false -> ok
						end;
					({parse_transform, PT}) ->
						Write("ERLC_OPTS += +'{parse_transform, " ++ ToList(PT) ++ "}'\n");
					(_) -> ok
				end, ErlOpts)
		end,
		Write("\n")
	end(),
	GetHexVsn = fun(N) ->
		case file:consult("$(call core_native_path,$(DEPS_DIR)/$1/rebar.lock)") of
			{ok, Lock} ->
				io:format("~p~n", [Lock]),
				case lists:keyfind("1.1.0", 1, Lock) of
					{_, LockPkgs} ->
						io:format("~p~n", [LockPkgs]),
						case lists:keyfind(atom_to_binary(N, latin1), 1, LockPkgs) of
							{_, {pkg, _, Vsn}, _} ->
								io:format("~p~n", [Vsn]),
								{N, {hex, binary_to_list(Vsn)}};
							_ ->
								false
						end;
					_ ->
						false
				end;
			_ ->
				false
		end
	end,
	fun() ->
		File = case lists:keyfind(deps, 1, Conf) of
			false -> [];
			{_, Deps} ->
				[begin case case Dep of
							N when is_atom(N) -> GetHexVsn(N);
							{N, S} when is_atom(N), is_list(S) -> {N, {hex, S}};
							{N, S} when is_tuple(S) -> {N, S};
							{N, _, S} -> {N, S};
							{N, _, S, _} -> {N, S};
							_ -> false
						end of
					false -> ok;
					{Name, Source} ->
						{Method, Repo, Commit} = case Source of
							{hex, V} -> {hex, V, undefined};
							{git, R} -> {git, R, master};
							{M, R, {branch, C}} -> {M, R, C};
							{M, R, {ref, C}} -> {M, R, C};
							{M, R, {tag, C}} -> {M, R, C};
							{M, R, C} -> {M, R, C}
						end,
						Write(io_lib:format("DEPS += ~s\ndep_~s = ~s ~s ~s~n", [Name, Name, Method, Repo, Commit]))
				end end || Dep <- Deps]
		end
	end(),
	fun() ->
		case lists:keyfind(erl_first_files, 1, Conf) of
			false -> ok;
			{_, Files} ->
				Names = [[" ", case lists:reverse(F) of
					"lre." ++ Elif -> lists:reverse(Elif);
					Elif -> lists:reverse(Elif)
				end] || "src/" ++ F <- Files],
				Write(io_lib:format("COMPILE_FIRST +=~s\n", [Names]))
		end
	end(),
	Write("\n\nrebar_dep: preprocess pre-deps deps pre-app app\n"),
	Write("\npreprocess::\n"),
	Write("\npre-deps::\n"),
	Write("\npre-app::\n"),
	PatchHook = fun(Cmd) ->
		Cmd2 = re:replace(Cmd, "^([g]?make)(.*)( -C.*)", "\\\\1\\\\3\\\\2", [{return, list}]),
		case Cmd2 of
			"make -C" ++ Cmd1 -> "$$\(MAKE) -C" ++ Escape(Cmd1);
			"gmake -C" ++ Cmd1 -> "$$\(MAKE) -C" ++ Escape(Cmd1);
			"make " ++ Cmd1 -> "$$\(MAKE) -f Makefile.orig.mk " ++ Escape(Cmd1);
			"gmake " ++ Cmd1 -> "$$\(MAKE) -f Makefile.orig.mk " ++ Escape(Cmd1);
			_ -> Escape(Cmd)
		end
	end,
	fun() ->
		case lists:keyfind(pre_hooks, 1, Conf) of
			false -> ok;
			{_, Hooks} ->
				[case H of
					{'get-deps', Cmd} ->
						Write("\npre-deps::\n\t" ++ PatchHook(Cmd) ++ "\n");
					{compile, Cmd} ->
						Write("\npre-app::\n\tCC=$$\(CC) " ++ PatchHook(Cmd) ++ "\n");
					{Regex, compile, Cmd} ->
						case rebar_utils:is_arch(Regex) of
							true -> Write("\npre-app::\n\tCC=$$\(CC) " ++ PatchHook(Cmd) ++ "\n");
							false -> ok
						end;
					_ -> ok
				end || H <- Hooks]
		end
	end(),
	ShellToMk = fun(V) ->
		re:replace(re:replace(V, "(\\\\$$)(\\\\w*)", "\\\\1(\\\\2)", [global]),
			"-Werror\\\\b", "", [{return, list}, global])
	end,
	PortSpecs = fun() ->
		case lists:keyfind(port_specs, 1, Conf) of
			false ->
				case filelib:is_dir("$(call core_native_path,$(DEPS_DIR)/$1/c_src)") of
					false -> [];
					true ->
						[{"priv/" ++ proplists:get_value(so_name, Conf, "$(1)_drv.so"),
							proplists:get_value(port_sources, Conf, ["c_src/*.c"]), []}]
				end;
			{_, Specs} ->
				lists:flatten([case S of
					{Output, Input} -> {ShellToMk(Output), Input, []};
					{Regex, Output, Input} ->
						case rebar_utils:is_arch(Regex) of
							true -> {ShellToMk(Output), Input, []};
							false -> []
						end;
					{Regex, Output, Input, [{env, Env}]} ->
						case rebar_utils:is_arch(Regex) of
							true -> {ShellToMk(Output), Input, Env};
							false -> []
						end
				end || S <- Specs])
		end
	end(),
	PortSpecWrite = fun (Text) ->
		file:write_file("$(call core_native_path,$(DEPS_DIR)/$1/c_src/Makefile.erlang.mk)", Text, [append])
	end,
	case PortSpecs of
		[] -> ok;
		_ ->
			Write("\npre-app::\n\t$$\(MAKE) -f c_src/Makefile.erlang.mk\n"),
			PortSpecWrite(io_lib:format("ERL_CFLAGS ?= -finline-functions -Wall -fPIC -I \\"~s/erts-~s/include\\" -I \\"~s\\"\n",
				[code:root_dir(), erlang:system_info(version), code:lib_dir(erl_interface, include)])),
			PortSpecWrite(io_lib:format("ERL_LDFLAGS ?= -L \\"~s\\" -lerl_interface -lei\n",
				[code:lib_dir(erl_interface, lib)])),
			[PortSpecWrite(["\n", E, "\n"]) || E <- OsEnv],
			FilterEnv = fun(Env) ->
				lists:flatten([case E of
					{_, _} -> E;
					{Regex, K, V} ->
						case rebar_utils:is_arch(Regex) of
							true -> {K, V};
							false -> []
						end
				end || E <- Env])
			end,
			MergeEnv = fun(Env) ->
				lists:foldl(fun ({K, V}, Acc) ->
					case lists:keyfind(K, 1, Acc) of
						false -> [{K, rebar_utils:expand_env_variable(V, K, "")}|Acc];
						{_, V0} -> [{K, rebar_utils:expand_env_variable(V, K, V0)}|Acc]
					end
				end, [], Env)
			end,
			PortEnv = case lists:keyfind(port_env, 1, Conf) of
				false -> [];
				{_, PortEnv0} -> FilterEnv(PortEnv0)
			end,
			PortSpec = fun ({Output, Input0, Env}) ->
				filelib:ensure_dir("$(call core_native_path,$(DEPS_DIR)/$1/)" ++ Output),
				Input = [[" ", I] || I <- Input0],
				PortSpecWrite([
					[["\n", K, " = ", ShellToMk(V)] || {K, V} <- lists:reverse(MergeEnv(PortEnv))],
					case $(PLATFORM) of
						darwin -> "\n\nLDFLAGS += -flat_namespace -undefined suppress";
						_ -> ""
					end,
					"\n\nall:: ", Output, "\n\n",
					"%.o: %.c\n\t$$\(CC) -c -o $$\@ $$\< $$\(CFLAGS) $$\(ERL_CFLAGS) $$\(DRV_CFLAGS) $$\(EXE_CFLAGS)\n\n",
					"%.o: %.C\n\t$$\(CXX) -c -o $$\@ $$\< $$\(CXXFLAGS) $$\(ERL_CFLAGS) $$\(DRV_CFLAGS) $$\(EXE_CFLAGS)\n\n",
					"%.o: %.cc\n\t$$\(CXX) -c -o $$\@ $$\< $$\(CXXFLAGS) $$\(ERL_CFLAGS) $$\(DRV_CFLAGS) $$\(EXE_CFLAGS)\n\n",
					"%.o: %.cpp\n\t$$\(CXX) -c -o $$\@ $$\< $$\(CXXFLAGS) $$\(ERL_CFLAGS) $$\(DRV_CFLAGS) $$\(EXE_CFLAGS)\n\n",
					[[Output, ": ", K, " += ", ShellToMk(V), "\n"] || {K, V} <- lists:reverse(MergeEnv(FilterEnv(Env)))],
					Output, ": $$\(foreach ext,.c .C .cc .cpp,",
						"$$\(patsubst %$$\(ext),%.o,$$\(filter %$$\(ext),$$\(wildcard", Input, "))))\n",
					"\t$$\(CC) -o $$\@ $$\? $$\(LDFLAGS) $$\(ERL_LDFLAGS) $$\(DRV_LDFLAGS) $$\(EXE_LDFLAGS)",
					case {filename:extension(Output), $(PLATFORM)} of
					    {[], _} -> "\n";
					    {_, darwin} -> "\n";
					    _ -> " -shared\n"
					end])
			end,
			[PortSpec(S) || S <- PortSpecs]
	end,
	Write("\ninclude $$\(if $$\(ERLANG_MK_FILENAME),$$\(ERLANG_MK_FILENAME),erlang.mk)"),
	RunPlugin = fun(Plugin, Step) ->
		case erlang:function_exported(Plugin, Step, 2) of
			false -> ok;
			true ->
				c:cd("$(call core_native_path,$(DEPS_DIR)/$1/)"),
				Ret = Plugin:Step({config, "", Conf, dict:new(), dict:new(), dict:new(),
					dict:store(base_dir, "", dict:new())}, undefined),
				io:format("rebar plugin ~p step ~p ret ~p~n", [Plugin, Step, Ret])
		end
	end,
	fun() ->
		case lists:keyfind(plugins, 1, Conf) of
			false -> ok;
			{_, Plugins} ->
				[begin
					case lists:keyfind(deps, 1, Conf) of
						false -> ok;
						{_, Deps} ->
							case lists:keyfind(P, 1, Deps) of
								false -> ok;
								_ ->
									Path = "$(call core_native_path,$(DEPS_DIR)/)" ++ atom_to_list(P),
									io:format("~s", [os:cmd("$(MAKE) -C $(call core_native_path,$(DEPS_DIR)/$1) " ++ Path)]),
									io:format("~s", [os:cmd("$(MAKE) -C " ++ Path ++ " IS_DEP=1")]),
									code:add_patha(Path ++ "/ebin")
							end
					end
				end || P <- Plugins],
				[case code:load_file(P) of
					{module, P} -> ok;
					_ ->
						case lists:keyfind(plugin_dir, 1, Conf) of
							false -> ok;
							{_, PluginsDir} ->
								ErlFile = "$(call core_native_path,$(DEPS_DIR)/$1/)" ++ PluginsDir ++ "/" ++ atom_to_list(P) ++ ".erl",
								{ok, P, Bin} = compile:file(ErlFile, [binary]),
								{module, P} = code:load_binary(P, ErlFile, Bin)
						end
				end || P <- Plugins],
				[RunPlugin(P, preprocess) || P <- Plugins],
				[RunPlugin(P, pre_compile) || P <- Plugins],
				[RunPlugin(P, compile) || P <- Plugins]
		end
	end(),
	halt()
endef

define dep_autopatch_appsrc_script.erl
	AppSrc = "$(call core_native_path,$(DEPS_DIR)/$1/src/$1.app.src)",
	AppSrcScript = AppSrc ++ ".script",
	{ok, Conf0} = file:consult(AppSrc),
	Bindings0 = erl_eval:new_bindings(),
	Bindings1 = erl_eval:add_binding('CONFIG', Conf0, Bindings0),
	Bindings = erl_eval:add_binding('SCRIPT', AppSrcScript, Bindings1),
	Conf = case file:script(AppSrcScript, Bindings) of
		{ok, [C]} -> C;
		{ok, C} -> C
	end,
	ok = file:write_file(AppSrc, io_lib:format("~p.~n", [Conf])),
	halt()
endef

define dep_autopatch_appsrc.erl
	AppSrcOut = "$(call core_native_path,$(DEPS_DIR)/$1/src/$1.app.src)",
	AppSrcIn = case filelib:is_regular(AppSrcOut) of false -> "$(call core_native_path,$(DEPS_DIR)/$1/ebin/$1.app)"; true -> AppSrcOut end,
	case filelib:is_regular(AppSrcIn) of
		false -> ok;
		true ->
			{ok, [{application, $(1), L0}]} = file:consult(AppSrcIn),
			L1 = lists:keystore(modules, 1, L0, {modules, []}),
			L2 = case lists:keyfind(vsn, 1, L1) of
				{_, git} -> lists:keyreplace(vsn, 1, L1, {vsn, "git"});
				{_, {cmd, _}} -> lists:keyreplace(vsn, 1, L1, {vsn, "cmd"});
				_ -> L1
			end,
			L3 = case lists:keyfind(registered, 1, L2) of false -> [{registered, []}|L2]; _ -> L2 end,
			ok = file:write_file(AppSrcOut, io_lib:format("~p.~n", [{application, $(1), L3}])),
			case AppSrcOut of AppSrcIn -> ok; _ -> ok = file:delete(AppSrcIn) end
	end,
	halt()
endef

define dep_fetch_git
	git clone -q -n -- $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1)); \
	cd $(DEPS_DIR)/$(call dep_name,$(1)) && git checkout -q $(call dep_commit,$(1));
endef

define dep_fetch_git-submodule
	git submodule update --init -- $(DEPS_DIR)/$1;
endef

define dep_fetch_hg
	hg clone -q -U $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1)); \
	cd $(DEPS_DIR)/$(call dep_name,$(1)) && hg update -q $(call dep_commit,$(1));
endef

define dep_fetch_svn
	svn checkout -q $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1));
endef

define dep_fetch_cp
	cp -R $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1));
endef

define dep_fetch_ln
	ln -s $(call dep_repo,$(1)) $(DEPS_DIR)/$(call dep_name,$(1));
endef

# Hex only has a package version. No need to look in the Erlang.mk packages.
define dep_fetch_hex
	mkdir -p $(ERLANG_MK_TMP)/hex $(DEPS_DIR)/$1; \
	$(call core_http_get,$(ERLANG_MK_TMP)/hex/$1.tar,\
		https://repo.hex.pm/tarballs/$1-$(strip $(word 2,$(dep_$1))).tar); \
	tar -xOf $(ERLANG_MK_TMP)/hex/$1.tar contents.tar.gz | tar -C $(DEPS_DIR)/$1 -xzf -;
endef

define dep_fetch_fail
	echo "Error: Unknown or invalid dependency: $(1)." >&2; \
	exit 78;
endef

# Kept for compatibility purposes with older Erlang.mk configuration.
define dep_fetch_legacy
	$(warning WARNING: '$(1)' dependency configuration uses deprecated format.) \
	git clone -q -n -- $(word 1,$(dep_$(1))) $(DEPS_DIR)/$(1); \
	cd $(DEPS_DIR)/$(1) && git checkout -q $(if $(word 2,$(dep_$(1))),$(word 2,$(dep_$(1))),master);
endef

define dep_fetch
	$(if $(dep_$(1)), \
		$(if $(dep_fetch_$(word 1,$(dep_$(1)))), \
			$(word 1,$(dep_$(1))), \
			$(if $(IS_DEP),legacy,fail)), \
		$(if $(filter $(1),$(PACKAGES)), \
			$(pkg_$(1)_fetch), \
			fail))
endef

define dep_target
$(DEPS_DIR)/$(call dep_name,$1):
	$(eval DEP_NAME := $(call dep_name,$1))
	$(eval DEP_STR := $(if $(filter-out $1,$(DEP_NAME)),$1,"$1 ($(DEP_NAME))"))
	$(verbose) if test -d $(APPS_DIR)/$(DEP_NAME); then \
		echo "Error: Dependency" $(DEP_STR) "conflicts with application found in $(APPS_DIR)/$(DEP_NAME)." >&2; \
		exit 17; \
	fi
	$(verbose) mkdir -p $(DEPS_DIR)
	$(dep_verbose) $(call dep_fetch_$(strip $(call dep_fetch,$(1))),$(1))
	$(verbose) if [ -f $(DEPS_DIR)/$(1)/configure.ac -o -f $(DEPS_DIR)/$(1)/configure.in ] \
			&& [ ! -f $(DEPS_DIR)/$(1)/configure ]; then \
		echo " AUTO  " $(1); \
		cd $(DEPS_DIR)/$(1) && autoreconf -Wall -vif -I m4; \
	fi
	- $(verbose) if [ -f $(DEPS_DIR)/$(DEP_NAME)/configure ]; then \
		echo " CONF  " $(DEP_STR); \
		cd $(DEPS_DIR)/$(DEP_NAME) && ./configure; \
	fi
ifeq ($(filter $(1),$(NO_AUTOPATCH)),)
	$(verbose) if [ "$(1)" = "amqp_client" -a "$(RABBITMQ_CLIENT_PATCH)" ]; then \
		if [ ! -d $(DEPS_DIR)/rabbitmq-codegen ]; then \
			echo " PATCH  Downloading rabbitmq-codegen"; \
			git clone https://github.com/rabbitmq/rabbitmq-codegen.git $(DEPS_DIR)/rabbitmq-codegen; \
		fi; \
		if [ ! -d $(DEPS_DIR)/rabbitmq-server ]; then \
			echo " PATCH  Downloading rabbitmq-server"; \
			git clone https://github.com/rabbitmq/rabbitmq-server.git $(DEPS_DIR)/rabbitmq-server; \
		fi; \
		ln -s $(DEPS_DIR)/amqp_client/deps/rabbit_common-0.0.0 $(DEPS_DIR)/rabbit_common; \
	elif [ "$(1)" = "rabbit" -a "$(RABBITMQ_SERVER_PATCH)" ]; then \
		if [ ! -d $(DEPS_DIR)/rabbitmq-codegen ]; then \
			echo " PATCH  Downloading rabbitmq-codegen"; \
			git clone https://github.com/rabbitmq/rabbitmq-codegen.git $(DEPS_DIR)/rabbitmq-codegen; \
		fi \
	else \
		$$(call dep_autopatch,$(DEP_NAME)) \
	fi
endif
endef

$(foreach dep,$(BUILD_DEPS) $(DEPS),$(eval $(call dep_target,$(dep))))

ifndef IS_APP
clean:: clean-apps

clean-apps:
	$(verbose) set -e; for dep in $(ALL_APPS_DIRS) ; do \
		$(MAKE) -C $$dep clean IS_APP=1; \
	done

distclean:: distclean-apps

distclean-apps:
	$(verbose) set -e; for dep in $(ALL_APPS_DIRS) ; do \
		$(MAKE) -C $$dep distclean IS_APP=1; \
	done
endif

ifndef SKIP_DEPS
distclean:: distclean-deps

distclean-deps:
	$(gen_verbose) rm -rf $(DEPS_DIR)
endif

# Forward-declare variables used in core/deps-tools.mk. This is required
# in case plugins use them.

ERLANG_MK_RECURSIVE_DEPS_LIST = $(ERLANG_MK_TMP)/recursive-deps-list.log
ERLANG_MK_RECURSIVE_DOC_DEPS_LIST = $(ERLANG_MK_TMP)/recursive-doc-deps-list.log
ERLANG_MK_RECURSIVE_REL_DEPS_LIST = $(ERLANG_MK_TMP)/recursive-rel-deps-list.log
ERLANG_MK_RECURSIVE_TEST_DEPS_LIST = $(ERLANG_MK_TMP)/recursive-test-deps-list.log
ERLANG_MK_RECURSIVE_SHELL_DEPS_LIST = $(ERLANG_MK_TMP)/recursive-shell-deps-list.log