about summary refs log tree commit diff
path: root/Makerules
blob: 9a56cbdead59c43f039977ed4cbd0fefee2b2cd6 (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
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
# Copyright (C) 1991-2022 Free Software Foundation, Inc.
# This file is part of the GNU C Library.

# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.

#
#	Common rules for making the GNU C library.  This file is included
#	by the top-level Makefile and by all subdirectory makefiles
#	(through Rules).
#
ifneq (,)
This makefile requires GNU Make.
endif

REQUIRED_MAKE_VERSION = 3.74
REAL_MAKE_VERSION = $(firstword $(MAKE_VERSION))

ifneq ($(REQUIRED_MAKE_VERSION), \
       $(firstword $(sort $(REAL_MAKE_VERSION) $(REQUIRED_MAKE_VERSION))))
Wrong GNU Make version.  See above for the version needed.
endif


ifdef	subdir
..	:= ../
endif	# subdir

# If `sources' was defined by the parent makefile, undefine it so
# we will later get it from wildcard search in this directory.
ifneq	"$(findstring env,$(origin sources))" ""
sources :=
endif

oPATH := $(PATH)
PATH := this definition should take precedence over $(oPATH)
ifeq ($(PATH),$(oPATH))
You must not use the -e flag when building the GNU C library.
else
PATH := $(oPATH)
endif

ifndef +included-Makeconfig
include $(..)Makeconfig
endif

# This variable is used in ``include $(o-iterator)'' after defining
# $(o-iterator-doit) to produce some desired rule using $o for the object
# suffix, and setting $(object-suffixes-left) to $(object-suffixes); a copy
# is produced for each object suffix in use.
o-iterator = $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-left))

# Include any system-specific makefiles.

# This is here so things in sysdep Makefiles can easily depend on foo.h as
# appropriate and not worry about where foo.h comes from, which may be
# system dependent and not known by that Makefile.
vpath %.h $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
				      $(+sysdep_dirs) $(..)))

# The same is true for RPC source files.
vpath %.x $(subst $(empty) ,:,$(strip $(common-objpfx) $(objpfx) \
				      $(+sysdep_dirs) $(..)))

# Some sysdep makefiles use this to distinguish being included here from
# being included individually by a subdir makefile (hurd/Makefile needs this).
in-Makerules := yes

sysdep-makefiles := $(wildcard $(sysdirs:=/Makefile))
ifneq (,$(sysdep-makefiles))
include $(sysdep-makefiles)
endif


# Reorder before-compile so that mach things come first, and hurd things
# second, before all else.  The mach and hurd subdirectories have many
# generated header files which the much of rest of the library depends on,
# so it is best to build them first (and mach before hurd, at that).
before-compile := $(filter $(common-objpfx)mach% $(common-objpfx)hurd%,\
			   $(before-compile)) \
		  $(filter-out $(common-objpfx)mach% $(common-objpfx)hurd%,\
			       $(before-compile))

# Even before that, we need abi-versions.h which is generated right here.
ifeq ($(build-shared),yes)
ifndef avoid-generated
before-compile := $(common-objpfx)abi-versions.h $(before-compile)
$(common-objpfx)abi-versions.h: $(..)scripts/abi-versions.awk \
				$(common-objpfx)Versions.all
	LC_ALL=C $(AWK) -f $^ > $@T
	mv -f $@T $@

$(common-objpfx)%.latest: $(common-objpfx)abi-versions.h
	sed -n '/ VERSION_$*_/{s/^.*_\([A-Z0-9_]*\).*$$/\1/;h;};$${g;p;}' \
	    $(common-objpfx)abi-versions.h > $@T
	mv -f $@T $@

# first-versions.h and ldbl-compat-choose.h provide macros used in
# various symbol versioning macro calls.
before-compile := $(common-objpfx)first-versions.h \
		  $(common-objpfx)ldbl-compat-choose.h $(before-compile)
$(common-objpfx)first-versions.h: $(common-objpfx)versions.stmp
$(common-objpfx)ldbl-compat-choose.h: $(common-objpfx)versions.stmp
endif # avoid-generated
endif # $(build-shared) = yes

ifndef avoid-generated
ifneq (,$(CXX))
# If C++ headers <cstdlib> or <cmath> are used, GCC 6 will include
# /usr/include/stdlib.h or /usr/include/math.h from "#include_next"
# (instead of stdlib/stdlib.h or math/math.h in the glibc source
# directory), and this turns up as a make dependency.  An implicit
# rule will kick in and make will try to install stdlib/stdlib.h or
# math/math.h as /usr/include/stdlib.h or /usr/include/math.h because
# the target is out of date.  We make a copy of <cstdlib> and <cmath>
# in the glibc build directory so that stdlib/stdlib.h and math/math.h
# will be used instead of /usr/include/stdlib.h and /usr/include/math.h.
before-compile := $(common-objpfx)cstdlib $(common-objpfx)cmath \
	          $(before-compile)
$(common-objpfx)cstdlib: $(c++-cstdlib-header)
	$(INSTALL_DATA) $< $@T
	$(move-if-change) $@T $@
$(common-objpfx)cmath: $(c++-cmath-header)
	$(INSTALL_DATA) $< $@T
	$(move-if-change) $@T $@
ifneq (,$(c++-bits-std_abs-h))
# Also make a copy of <bits/std_abs.h> from GCC 7 to prevent it from
# including /usr/include/stdlib.h.
before-compile := $(common-objpfx)bits/std_abs.h $(before-compile)
$(common-objpfx)bits/std_abs.h: $(c++-bits-std_abs-h)
	$(INSTALL_DATA) $< $@T
	$(move-if-change) $@T $@
endif
endif

before-compile := $(common-objpfx)libc-abis.h $(before-compile)
$(common-objpfx)libc-abis.h: $(common-objpfx)libc-abis.stamp; @:
$(common-objpfx)libc-abis.stamp: $(..)scripts/gen-libc-abis \
			     $(firstword $(wildcard $(sysdirs:=/libc-abis)) \
					 $(..)libc-abis) \
			     $(..)Makerules
	$(SHELL) $< \
		 $(base-machine)-$(config-vendor)-$(config-os) \
		 < $(word 2,$^) > $(@:.stamp=.h)T
	$(move-if-change) $(@:.stamp=.h)T $(@:.stamp=.h)
	touch $@
common-generated += $(common-objpfx)libc-abis.h
endif # avoid-generated

ifeq (yes,$(build-shared))
$(common-objpfx)runtime-linker.h: $(common-objpfx)runtime-linker.stamp; @:
$(common-objpfx)runtime-linker.stamp: $(common-objpfx)config.make
	$(make-target-directory)
	echo '#define RUNTIME_LINKER "$(rtlddir)/$(rtld-installed-name)"' \
		> ${@:stamp=T}
	$(move-if-change) ${@:stamp=T} ${@:stamp=h}
	touch $@
endif

# Make sure the subdirectory for object files gets created.
ifdef objpfx
ifeq (,$(wildcard $(objpfx).))
before-compile += $(objpfx).
$(objpfx).:
	$(make-target-directory)
endif
endif

# Remove existing files from `before-compile'.  Things are added there when
# they must exist for dependency generation to work right, but once they
# exist there is no further need for every single file to depend on them,
# and those gratuitous dependencies result in many gratuitous
# recompilations.
before-compile := $(filter-out $(wildcard $(before-compile)),$(before-compile))

# Don't let any before-compile file be an intermediate and get removed.
ifdef before-compile
$(before-compile):
endif

# We don't want $(common-objpfx) files to depend on miscellaneous stuff
# in subdirs.
ifdef subdir
common-before-compile := $(filter-out $(objpfx)%,$(before-compile))
else
common-before-compile = $(before-compile)
endif

ifndef subdir
# If a makefile needs to do something conditional on something that
# can only be figured out from headers, write a FOO.make.c input
# file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
# to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
#
# We only generate these in the top-level makefile, to avoid any weirdness
# from subdir-specific makefile tweaks creeping in on an update.
$(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(common-before-compile)
	rm -f $@T $@.dT
	(echo '# Generated from $*.make.c by Makerules.'; \
	 $(CC) $(CFLAGS) $(CPPFLAGS) -E -DASSEMBLER $< \
	       -MD -MP -MT '$$(common-objpfx)$*.make' -MF $@.dT \
	 | sed -n '/@@@/{s/@@@[	 ]*\(.*\)@@@/\1/;s/[	 ]*$$//p;}'; \
	 echo 'common-generated += $(@F)'; \
	 sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
	 rm -f $@.dT) > $@T
	mv -f $@T $@
endif

ifdef subdir
sed-remove-dotdot := -e 's@  *\.\.\/\([^ 	\]*\)@ $$(..)\1@g' \
		     -e 's@^\.\.\/\([^ 	\]*\)@$$(..)\1@g'
else
sed-remove-dotdot := -e 's@  *\([^ 	\/$$][^ 	\]*\)@ $$(..)\1@g' \
		     -e 's@^\([^ 	\/$$][^ 	\]*\)@$$(..)\1@g'
endif

ifdef gen-py-const-headers
# We'll use a static pattern rule to match .pysym files with their
# corresponding generated .py files.
# The generated .py files go in the submodule's dir in the glibc build dir.
py-const-files := $(patsubst %.pysym,%.py,$(gen-py-const-headers))
py-const-dir := $(objpfx)
py-const := $(addprefix $(py-const-dir),$(py-const-files))
py-const-script := $(..)scripts/gen-as-const.py

# This is a hack we use to generate .py files with constants for
# Python code.
#
# $@.tmp is a temporary file we use to store the partial contents of
# the target file.  We do this instead of just writing on $@ because,
# if the build process terminates prematurely, re-running Make
# wouldn't run this rule since Make would see that the target file
# already exists (despite it being incomplete).
#
# The output is redirected to a .py file; we'll import it in the main
# Python code to read the constants generated by gen-as-const.py.
$(py-const): $(py-const-dir)%.py: %.pysym $(py-const-script) \
	     $(common-before-compile)
	$(make-target-directory)
	$(PYTHON) $(py-const-script) --python \
		  --cc="$(CC) $(CFLAGS) $(CPPFLAGS)" $< \
		  > $@.tmp
	mv -f $@.tmp $@

generated += $(py-const)
endif  # gen-py-const-headers

ifdef gen-as-const-headers
# Generating headers for assembly constants.
# We need this defined early to get into before-compile before
# it's used in sysd-rules, below.
# Define GEN_AS_CONST_HEADERS to avoid circular dependency [BZ #22792].
# NB: <tcb-offsets.h> is generated from tcb-offsets.sym to define
# offsets and sizes of types in <tls.h> and maybe <pthread.h> which
# may include <tcb-offsets.h>.  Target header files can check if
# GEN_AS_CONST_HEADERS is defined to avoid circular dependency which
# may lead to build hang on a many-core machine.
$(common-objpfx)%.h $(common-objpfx)%.h.d: $(..)scripts/gen-as-const.py \
					   %.sym $(common-before-compile)
	$(PYTHON) $< --cc="$(CC) $(CFLAGS) $(CPPFLAGS) -DGEN_AS_CONST_HEADERS \
			   -MD -MP -MF $(@:.h=.h.d)T \
			   -MT '$(@:.h=.h.d) $(@:.h.d=.h)'" \
		  $(filter %.sym,$^) > $(@:.h.d=.h)T
	sed $(sed-remove-objpfx) $(sed-remove-dotdot) \
	    $(@:.h=.h.d)T > $(@:.h=.h.d)T2
	rm -f $(@:.h=.h.d)T
	mv -f $(@:.h=.h.d)T2 $(@:.h=.h.d)
	mv -f $(@:.h.d=.h)T $(@:.h.d=.h)
vpath %.sym $(sysdirs)
before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)

tests-internal += $(gen-as-const-headers:%.sym=test-as-const-%)
generated += $(gen-as-const-headers:%.sym=test-as-const-%.c)
$(objpfx)test-as-const-%.c: $(..)scripts/gen-as-const.py $(..)Makerules \
			    %.sym $(common-objpfx)%.h
	($(AWK) '{ sub(/^/, "asconst_", $$2); print; }' $(filter %.h,$^); \
	 $(PYTHON) $< --test $(filter %.sym,$^)) > $@T
	mv -f $@T $@
endif

ifeq (yes,$(build-shared))
# Generate the header containing the names of all shared libraries.
# We use a stamp file to avoid unnecessary recompilations.
before-compile += $(common-objpfx)gnu/lib-names.h
ifeq ($(soversions.mk-done),t)
ifndef abi-variants
lib-names-h-abi = gnu/lib-names.h
lib-names-stmp-abi = gnu/lib-names.stmp
else
lib-names-h-abi = gnu/lib-names-$(default-abi).h
lib-names-stmp-abi = gnu/lib-names-$(default-abi).stmp
before-compile += $(common-objpfx)$(lib-names-h-abi)
common-generated += gnu/lib-names.h
install-others-nosubdir: $(inst_includedir)/$(lib-names-h-abi)
$(common-objpfx)gnu/lib-names.h:
	$(make-target-directory)
	{ \
	 echo '/* This file is automatically generated.';\
	 echo '   It defines macros to allow user program to find the shared'; \
	 echo '   library files which come as part of GNU libc.  */'; \
	 echo '#ifndef __GNU_LIB_NAMES_H'; \
	 echo '#define __GNU_LIB_NAMES_H	1'; \
	 echo ''; \
	 $(if $(abi-includes), \
	  $(foreach h,$(abi-includes), echo '#include <$(h)>';) \
	  echo '';) \
	 $(foreach v,$(abi-variants),\
	 $(if $(abi-$(v)-condition),\
	 echo '#if $(abi-$(v)-condition)'; \
	 echo '# include <gnu/lib-names-$(v).h>'); \
	 $(if $(abi-$(v)-condition),echo '#endif';)) \
	 echo ''; \
	 echo '#endif	/* gnu/lib-names.h */'; \
	} >  $@
endif
$(common-objpfx)$(lib-names-h-abi): $(common-objpfx)$(lib-names-stmp-abi); @:
$(common-objpfx)$(lib-names-stmp-abi): $(..)scripts/lib-names.awk \
				       $(common-objpfx)soversions.i
	$(make-target-directory)
	{ \
	 $(if $(abi-variants), \
	 echo '/* This file is automatically generated.  */';\
	 echo '#ifndef __GNU_LIB_NAMES_H'; \
	 echo '# error "Never use <$(lib-names-h-abi)> directly; include <gnu/lib-names.h> instead."'; \
	 echo '#endif';, \
	 echo '/* This file is automatically generated.';\
	 echo '   It defines macros to allow user program to find the shared'; \
	 echo '   library files which come as part of GNU libc.  */'; \
	 echo '#ifndef __GNU_LIB_NAMES_H'; \
	 echo '#define __GNU_LIB_NAMES_H	1';) \
	 echo ''; \
	 ($(foreach s,$(all-sonames), echo $(s);)) \
	 | LC_ALL=C $(AWK) -f $(firstword $^) | LC_ALL=C sort; \
	 $(if $(abi-variants),, \
	 echo ''; \
	 echo '#endif	/* gnu/lib-names.h */';) \
	} >  ${@:stmp=T}
	$(move-if-change) ${@:stmp=T} ${@:stmp=h}
	touch $@
endif
common-generated += $(lib-names-h-abi) $(lib-names-stmp-abi)
endif

###############################################################################
# NOTE!  Everything adding to before-compile needs to come before this point! #
###############################################################################

# Generate an ordered list of implicit rules which find the source files in
# each sysdep directory.  The old method was to use vpath to search all the
# sysdep directories.  However, that had the problem that a .S file in a
# later directory would be chosen over a .c file in an earlier directory,
# which does not preserve the desired sysdeps ordering behavior.

# System-dependent makefiles can put in `inhibit-sysdep-asm' regexps
# matching sysdep directories whose assembly source files should be
# suppressed.

-include $(common-objpfx)sysd-rules
ifneq ($(sysd-rules-sysdirs),$(config-sysdirs))
# The value of $(+sysdep_dirs) the sysd-rules was computed for
# differs from the one we are using now.  So force a rebuild of sysd-rules.
sysd-rules-force = FORCE
FORCE:
endif
$(common-objpfx)sysd-rules: $(..)scripts/sysd-rules.awk \
			    $(common-objpfx)config.make $(..)Makerules \
			    $(sysdep-makefiles) $(sysdep-makeconfigs) \
			    $(sysd-rules-force)
	-@rm -f $@T
	LC_ALL=C $(AWK) -f $< > $@T \
			-v all_object_suffixes='$(all-object-suffixes)' \
			-v inhibit_sysdep_asm='$(inhibit-sysdep-asm)' \
			-v sysd_rules_patterns='$(sysd-rules-patterns)' \
			-v config_sysdirs='$(config-sysdirs)'
	mv -f $@T $@

ifndef sysd-rules-done
# Don't do deps until this exists, because it provides rules to make the deps.
no_deps=t
endif

define o-iterator-doit
$(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)

define o-iterator-doit
$(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)

define o-iterator-doit
$(objpfx)%$o: %.cc $(before-compile); $$(compile-command.cc)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)

# Omit the objpfx rules when building in the source tree, because
# objpfx is empty and so these rules just override the ones above.
ifdef objpfx
# Define first rules to find the source files in $(objpfx).
# Generated source files will end up there.
define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)

define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
endif

# Generate .dT files as we compile.
compile-mkdep-flags = -MD -MP -MF $@.dt -MT $@
compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
compile-command.cc = $(compile.cc) $(OUTPUT_OPTION) $(compile-mkdep-flags)

# Like compile-mkdep-flags, but for use with $(BUILD_CC).  We don't want to
# track system includes here, they may spuriously trigger an install rule,
# and would cause the check-local-headers test to fail.
native-compile-mkdep-flags = -MMD -MP -MF $@.dt -MT $@

# GCC can grok options after the file name, and it looks nicer that way.
compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
compile.cc = $(CXX) $< -c $(CXXFLAGS) $(CPPFLAGS)
compile.S = $(CC) $< -c $(CPPFLAGS) $(S-CPPFLAGS) \
		  $(ASFLAGS) $(ASFLAGS-$(suffix $@))
COMPILE.c = $(CC) -c $(CFLAGS) $(CPPFLAGS)
COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
		  $(ASFLAGS) $(ASFLAGS-$(suffix $@))

# We need this for the output to go in the right place.  It will default to
# empty if make was configured to work with a cc that can't grok -c and -o
# together.  You can't compile the C library with such a compiler.
OUTPUT_OPTION = -o $@

# This is the end of the pipeline for compiling generated C code.
compile-stdin.c = $(COMPILE.c) -o $@ -x c - $(compile-mkdep-flags)

# We need the $(CFLAGS) to be in there to have the right predefines during
# the dependency run for C sources.  But having it for assembly sources can
# get the wrong predefines.
S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)

ifneq (,$(objpfx))
# Continuation lines here are dangerous because they introduce spaces!
define sed-remove-objpfx
-e 's@ $(subst .,\.,$(subst @,\@,$(common-objpfx)))@ $$(common-objpfx)@g' \
-e 's@^$(subst .,\.,$(subst @,\@,$(common-objpfx)))@$$(common-objpfx)@g'
endef
endif

# Modify the list of routines we build for different targets

ifeq (yes,$(build-shared))
ifndef libc.so-version
# Undefine this because it can't work when we libc.so is unversioned.
static-only-routines =
endif
endif

elide-routines.oS += $(filter-out $(static-only-routines),\
				  $(routines) $(aux) $(sysdep_routines))
elide-routines.os += $(static-only-routines)

# If we have versioned code we don't need the old versions in any of the
# static libraries.
elide-routines.o  += $(shared-only-routines)
elide-routines.op += $(shared-only-routines)

# Shared library building.

ifeq (yes,$(build-shared))

# Reference map file only when shared libraries are built and a map file name
# is given.
ifeq ($(build-shared),yes)
map-file = $(firstword $($(@F:.so=-map)) \
		       $(addprefix $(common-objpfx), \
				   $(filter $(@F:.so=.map),$(version-maps))))
load-map-file = $(map-file:%=-Wl,--version-script=%)
endif

# Compiler arguments to use to link a shared object with libc and
# ld.so.  This is intended to be as similar as possible to a default
# link with an installed libc.
link-libc-args = -Wl,--start-group \
		 $(libc-for-link) \
		 $(common-objpfx)libc_nonshared.a \
		 -Wl,--as-needed $(elf-objpfx)ld.so -Wl,--no-as-needed \
		 -Wl,--end-group

# The corresponding shared libc to use.  This may be modified for a
# particular target.
libc-for-link = $(common-objpfx)libc.so

# The corresponding dependencies.  As these are used in dependencies,
# not just commands, they cannot use target-specific variables so need
# to name both possible libc.so objects.
link-libc-deps = $(common-objpfx)libc.so $(common-objpfx)linkobj/libc.so \
		 $(common-objpfx)libc_nonshared.a $(elf-objpfx)ld.so

# Pattern rule to build a shared object from an archive of PIC objects.
# This must come after the installation rules so Make doesn't try to
# build shared libraries in place from the installed *_pic.a files.
# $(LDLIBS-%.so) may contain -l switches to generate run-time dependencies
# on other shared objects.  The linking with libc and ld.so is intended
# to be as similar as possible to a default link with an installed libc.
lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(link-libc-deps)
	$(build-shlib) $(link-libc-args)
	$(call after-link,$@)

define build-shlib-helper
$(LINK.o) -shared -static-libgcc -Wl,-O1 $(sysdep-LDFLAGS) \
	  $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) $(rtld-LDFLAGS) \
	  $(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
	  $(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
	  -Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
	  $(LDFLAGS.so) $(LDFLAGS-lib.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
endef

ifeq (yes,$(use-default-link))
# If the linker is good enough, we can let it use its default linker script.
shlib-lds =
shlib-lds-flags =
else
# binutils only position loadable notes into the first page for binaries,
# not for shared objects
$(common-objpfx)shlib.lds: $(common-objpfx)config.make $(..)Makerules
	$(LINK.o) -shared -Wl,-O1 \
		  -nostdlib -nostartfiles \
		  $(sysdep-LDFLAGS) $(rtld-LDFLAGS) $(LDFLAGS.so) \
		  -Wl,--verbose 2>/dev/null | \
	  sed > $@T \
	      -e '/^=========/,/^=========/!d;/^=========/d' \
	      $(if $(filter yes,$(have-hash-style)), \
		   -e 's/^.*\.gnu\.hash[ 	]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
		   -e '/^[ 	]*\.hash[ 	]*:.*$$/{h;d;}' \
		   -e '/DATA_SEGMENT_ALIGN/{H;g}' \
		, \
		   -e 's/^.*\.hash[ 	]*:.*$$/  .note.ABI-tag : { *(.note.ABI-tag) } &/' \
	       ) \
	      -e 's/^.*\*(\.dynbss).*$$/& \
		 PROVIDE(__start___libc_freeres_ptrs = .); \
		 *(__libc_freeres_ptrs) \
		 PROVIDE(__stop___libc_freeres_ptrs = .);/'\
	      -e 's@^.*\*(\.jcr).*$$@& \
		 PROVIDE(__start___libc_subfreeres = .);\
		 __libc_subfreeres : { *(__libc_subfreeres) }\
		 PROVIDE(__stop___libc_subfreeres = .);\
		 PROVIDE(__start___libc_atexit = .);\
		 __libc_atexit : { *(__libc_atexit) }\
		 PROVIDE(__stop___libc_atexit = .);\
		 PROVIDE(__start___libc_IO_vtables = .);\
		 __libc_IO_vtables : { *(__libc_IO_vtables) }\
		 PROVIDE(__stop___libc_IO_vtables = .);\
		 /DISCARD/ : { *(.gnu.glibc-stub.*) }@'
	test -s $@T
	mv -f $@T $@
common-generated += shlib.lds

shlib-lds = $(common-objpfx)shlib.lds
shlib-lds-flags = -T $(shlib-lds)
endif

define build-shlib
$(build-shlib-helper) -o $@ $(shlib-lds-flags) \
	  $(csu-objpfx)abi-note.o $(build-shlib-objlist)
endef

define build-module-helper
$(LINK.o) -shared -static-libgcc $(sysdep-LDFLAGS) $(rtld-LDFLAGS) \
	  $(if $($(@F)-no-z-defs)$(no-z-defs),,-Wl,-z,defs) \
	  -B$(csu-objpfx) $(load-map-file) \
	  $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
	  -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
endef

# This macro is similar to build-shlib but it does not define a soname
# and it does not depend on the destination name to start with `lib'.
# binutils only position loadable notes into the first page for binaries,
# not for shared objects
define build-module
$(build-module-helper) -o $@ $(shlib-lds-flags) \
	  $(csu-objpfx)abi-note.o $(build-module-objlist) $(link-libc-args)
$(call after-link,$@)
endef
define build-module-asneeded
$(build-module-helper) -o $@ $(shlib-lds-flags) \
	  $(csu-objpfx)abi-note.o \
	  -Wl,--as-needed $(build-module-objlist) -Wl,--no-as-needed \
	  $(link-libc-args)
$(call after-link,$@)
endef

# sofini.os must be placed last since it terminates .eh_frame section.
build-module-helper-objlist = \
	$(patsubst %_pic.a,$(whole-archive) %_pic.a $(no-whole-archive),\
		   $(filter-out %.lds $(map-file) $(+preinit) $(+postinit) \
				$(elf-objpfx)sofini.os \
				$(link-libc-deps),$^))

build-module-objlist = $(build-module-helper-objlist) $(LDLIBS-$(@F:%.so=%).so)
build-shlib-objlist = $(build-module-helper-objlist) \
		      $(LDLIBS-$(@F:lib%.so=%).so) \
		      $(filter $(elf-objpfx)sofini.os,$^)

# Don't try to use -lc when making libc.so itself.
# Also omits crti.o and crtn.o, which we do not want
# since we define our own `.init' section specially.
LDFLAGS-c.so = -nostdlib -nostartfiles
# But we still want to link libc.so against $(libc.so-gnulib).
LDLIBS-c.so += $(libc.so-gnulib)
# Give libc.so an entry point and make it directly runnable itself.
LDFLAGS-c.so += -e __libc_main
# Pre-link the objects of libc_pic.a so that we can locally resolve
# COMMON symbols before we link against ld.so.  This is because ld.so
# contains some of libc_pic.a already, which will prevent the COMMONs
# from being allocated in libc.so, which introduces evil dependencies
# between libc.so and ld.so, which can make it impossible to upgrade.
$(common-objpfx)libc_pic.os: $(common-objpfx)libc_pic.a
	$(LINK.o) -nostdlib -nostartfiles -r -o $@ \
	$(LDFLAGS-c_pic.os) -Wl,-d $(whole-archive) $^ -o $@

ifeq (,$(strip $(shlib-lds-flags)))
# Generate a list of -R options to excise .gnu.glibc-stub.* sections.
$(common-objpfx)libc_pic.opts: $(common-objpfx)libc_pic.os
	$(OBJDUMP) -h $< | \
	$(AWK) '$$2 ~ /\.gnu\.glibc-stub\./ { print "-R", $$2 }' \
		> $@T
	mv -f $@T $@
# Apply those -R options.
$(common-objpfx)libc_pic.os.clean: $(common-objpfx)libc_pic.opts \
				   $(common-objpfx)libc_pic.os
	$(OBJCOPY) @$^ $@
generated += libc_pic.opts libc_pic.os.clean

libc_pic_clean := .clean
endif

# Build a possibly-modified version of libc_pic.a for use in building
# linkobj/libc.so.
ifeq (,$(filter sunrpc,$(subdirs)))
$(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a
	$(make-target-directory)
	ln -f $< $@
else
$(common-objpfx)linkobj/libc_pic.a: $(common-objpfx)libc_pic.a \
				    $(common-objpfx)sunrpc/librpc_compat_pic.a
	$(make-target-directory)
	(cd $(common-objpfx)linkobj; \
	 $(AR) x ../libc_pic.a; \
	 rm $$($(AR) t ../sunrpc/librpc_compat_pic.a | sed 's/^compat-//'); \
	 $(AR) x ../sunrpc/librpc_compat_pic.a; \
	 $(AR) cr libc_pic.a *.os; \
	 rm *.os)
endif # $(subdirs) contains sunrpc

# Clear link-libc-deps for the libc.so libraries so build-shlibs does not
# filter ld.so out of the list of linked objects.
$(common-objpfx)libc.so: link-libc-deps = # empty
$(common-objpfx)linkobj/libc.so: link-libc-deps = # empty

# Use our own special initializer and finalizer files for the libc.so
# libraries.
$(common-objpfx)libc.so: $(common-objpfx)libc_pic.os$(libc_pic_clean) \
			 $(elf-objpfx)sofini.os \
			 $(elf-objpfx)interp.os \
			 $(elf-objpfx)ld.so \
			 $(shlib-lds)
	$(build-shlib)
	$(call after-link,$@)

$(common-objpfx)linkobj/libc.so: $(common-objpfx)linkobj/libc_pic.a \
			 $(elf-objpfx)sofini.os \
			 $(elf-objpfx)interp.os \
			 $(elf-objpfx)ld.so \
			 $(shlib-lds)
	$(build-shlib)
	$(call after-link,$@)

ifeq ($(build-shared),yes)
$(common-objpfx)libc.so: $(common-objpfx)libc.map
endif
common-generated += libc.so libc_pic.os
ifdef libc.so-version
$(common-objpfx)libc.so$(libc.so-version): $(common-objpfx)libc.so
	$(make-link)
common-generated += libc.so$(libc.so-version)
endif
endif

# Figure out the source filenames in this directory.

override sources := $(addsuffix .c,\
			$(filter-out $(elided-routines),\
			    $(routines) $(aux) \
			    $(sysdep_routines)))
sysdep_routines := $(sysdep_routines)

headers := $(headers) $(sysdep_headers)

# This is the list of all object files, gotten by
# replacing every ".c" in `sources' with a ".o".
override objects := $(addprefix $(objpfx),$(sources:.c=.o))


# The makefile may define $(extra-libs) with `libfoo libbar'
# to build libfoo.a et al from the modules listed in $(libfoo-routines).
ifdef extra-libs
# extra-lib.mk is included once for each extra lib to define rules
# to build it, and to add its objects to the various variables.
# During its evaluation, $(lib) is set to the name of the library.
extra-libs-left := $(extra-libs)
include $(patsubst %,$(..)extra-lib.mk,$(extra-libs))
endif


# The makefile may define $(modules-names) to build additional modules.
# These are built with $(build-module), except any in $(modules-names-nobuild).
# MODULE_NAME=extramodules, except any in $(modules-names-tests).
ifdef modules-names
cpp-srcs-left := $(filter-out $(modules-names-tests),$(modules-names))
ifneq (,$(cpp-srcs-left))
lib := extramodules
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif

ifdef modules-names-tests
cpp-srcs-left := $(filter $(modules-names-tests),$(modules-names))
ifneq (,$(cpp-srcs-left))
lib := testsuite
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif
endif

extra-modules-build := $(filter-out $(modules-names-nobuild),$(modules-names))
$(extra-modules-build:%=$(objpfx)%.so): $(objpfx)%.so: \
		$(objpfx)%.os $(shlib-lds) $(link-libs-deps)
	$(build-module)
endif

+depfiles := $(sources:.c=.d) \
	     $(patsubst %.o,%.d,$(filter %.o,$(extra-objs:.os=.o))) \
	     $(patsubst %.oS,%.d,$(filter %.oS,$(extra-objs))) \
	     $(patsubst %.o,%.d,$(filter %.o,$(extra-test-objs:.os=.o))) \
	     $(addsuffix .d,$(tests) $(tests-internal) $(xtests) \
		$(test-srcs) $(tests-time64) $(xtests-time64))
ifeq ($(build-programs),yes)
+depfiles += $(addsuffix .d,$(others) $(sysdep-others))
endif
+depfiles := $(addprefix $(objpfx),\
			 $(filter-out $(addsuffix .d,$(omit-deps)),\
				      $(+depfiles)))
all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
+depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
	     $(wildcard $(all-dt-files:.dt=.d))

# This is a funny rule in that it removes its input file.
%.d: %.dt
	@sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
	 mv -f $(@:.d=.T) $@ && \
	 rm -f $<

# Avoid the .h.d files for any .sym files whose .h files don't exist yet.
# They will be generated when they're needed, and trying too early won't work.
+gen-as-const := $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
+depfiles += $(addsuffix .d,$(filter $(wildcard $(+gen-as-const)),\
						$(+gen-as-const)))

ifdef +depfiles
ifneq ($(no_deps),t)
-include $(+depfiles)
endif
endif

# Maximize efficiency by minimizing the number of rules.
.SUFFIXES:	# Clear the suffix list.  We don't use suffix rules.
# Don't define any builtin rules.
MAKEFLAGS := $(MAKEFLAGS)r

# Generic rule for making directories.
%/:
# mkdir isn't smart enough to strip a trailing /.
# We always require a mkdir which supports the -p option to avoid error
# messages in case of races.
	mkdir -p $(@:%/=%)

# Make sure that object files are not removed
# when they are intermediates between sources and library members.
.PRECIOUS: $(addprefix $(objpfx)%,$(all-object-suffixes))

# Make sure that the parent library archive is never removed.
.PRECIOUS: $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))

# Use the verbose option of ar and tar when not running silently.
ifeq	"$(findstring s,$(MAKEFLAGS))" ""	# if not -s
verbose := v
else	   					# -s
verbose	:=
endif						# not -s

ARFLAGS := r$(verbose)
CREATE_ARFLAGS := cru$(verbose)

# This makes all the object files in the parent library archive.

.PHONY: lib lib-noranlib
lib: lib-noranlib $(foreach l,$(libtypes),$(patsubst %,$(common-objpfx)$l,c))
lib-noranlib: libobjs

# For object-suffix $o, the list of objects with that suffix.
# Makefiles can define `elide-routines.so = foo' to leave foo.so out.
o-objects = $(patsubst %.o,%$o,$(filter-out $(patsubst %,$(objpfx)%.o,\
						       $(elide-routines$o)),\
					    $(objects))) \
	    $(addprefix $(objpfx),$(o-objects$o))

others: $(addprefix $(objpfx),$(install-lib))

ifndef objects

# Create the stamp$o files to keep the parent makefile happy.
subdir_lib: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
$(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o):
	$(make-target-directory)
	rm -f $@; > $@
else

# Define explicit rules to update each $(objpfx)stamp.SUFFIX
# timestamp file; these rules (one explicit rule is generated for each
# object suffix) write a list of objects to update in the stamp file.
# The parent will then actually add them all to the archive in the
# archive rule, below.
define o-iterator-doit
$(objpfx)stamp$o: $(o-objects); $$(do-stamp)
endef
define do-stamp
$(make-target-directory)
echo '$(patsubst $(objpfx)%,$(addsuffix /,$(subdir))%,$^)' > $@T
mv -f $@T $@
endef
object-suffixes-left := $(object-suffixes-for-libc)
include $(o-iterator)

endif

# Now define explicit rules to build the library archives; these depend
# on the stamp files built above.
define o-iterator-doit
$(common-objpfx)$(patsubst %,$(libtype$o),c): \
		$(subdirs-stamp-o) $(common-objpfx)stamp$o; $$(do-makelib)
endef
define do-makelib
cd $(common-objdir) && \
$(AR) $(CREATE_ARFLAGS) $(@F) `cat $(patsubst $(common-objpfx)%,%,$^)`
endef
subdirs-stamps := $(foreach d,$(subdirs),$(common-objpfx)$d/stamp%)
subdirs-stamp-o = $(subst %,$o,$(subdirs-stamps))
ifndef subdir
$(subdirs-stamps): subdir_lib;
endif
object-suffixes-left = $(object-suffixes-for-libc)
include $(o-iterator)


# This makes all the object files.
.PHONY: objects objs libobjs extra-objs
objects objs: libobjs extra-objs
libobjs: $(foreach o,$(object-suffixes-for-libc),$(objpfx)stamp$o)
extra-objs: $(addprefix $(objpfx),$(extra-objs))

# Canned sequence for building an extra library archive.
define build-extra-lib
$(patsubst %/,cd % &&,$(objpfx)) \
$(AR) $(CREATE_ARFLAGS) $(@:$(objpfx)%=%) \
      $(patsubst $(objpfx)%,%,$^)
endef

# Installation.

.PHONY: force-install
force-install:

# $(install-lib) are installed from the object directory into $(libdir);
# files in $(install-lib) matching `lib%.a' are ranlib'd after installation
# unless they also appear in $(non-lib.a).  $(install-data) are installed as
# they are into $(datadir).  $(headers) are installed as they are in
# $(includedir).  $(install-bin), $(install-bin-script) and $(install-sbin)
# are installed from the object directory into $(bindir), $(bindir) and
# $(sbindir), respectively.  $(install-others) and $(install-others-programs)
# are absolute path names of files to install; rules to install them are
# defined elsewhere.

# The simple library name to install libc.a under.
# This could be defined by a sysdep Makefile.
ifndef libc-name
libc-name := c
endif

define do-install
$(make-target-directory)
$(INSTALL_DATA) $< $@
endef

# Make the target directory if it doesn't exist, using the `mkinstalldirs'
# script that does `mkdir -p' even if `mkdir' doesn't support that flag.
define make-target-directory
$(addprefix $(..)./scripts/mkinstalldirs ,\
	    $(filter-out $(wildcard $(@D:%/=%)),$(@D:%/=%)))
endef

# Any directory (parent or subdir) should install libc.a; this way
# "make install" in a subdir is guaranteed to install everything it changes.
installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
			     $(inst_libdir)/$(patsubst %,$(libtype$o),\
						     $(libprefix)$(libc-name)))

.PHONY: check-install-supported
check-install-supported:

# Check to see if the prefix or exec_prefix GNU standard variable
# has been overridden on the command line and, if so, fail with
# an error message since doing so is not supported (set DESTDIR
# instead).
ifeq ($(origin prefix),command line)
check-install-supported:
	$(error Overriding prefix is not supported. Set DESTDIR instead.)
endif

ifeq ($(origin exec_prefix),command line)
check-install-supported:
	$(error Overriding exec_prefix is not supported. Set DESTDIR instead.)
endif

install: check-install-supported

install: $(installed-libcs)
$(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
	$(make-target-directory)
	$(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@

define do-install-program
$(make-target-directory)
$(INSTALL_PROGRAM) $< $@.new
mv -f $@.new $@
endef

define do-install-script
$(make-target-directory)
$(INSTALL_SCRIPT) $< $@.new
mv -f $@.new $@
endef

install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
install-lib := $(filter-out %.so %_pic.a,$(install-lib))

ifeq (yes,$(build-shared))
# Find which .so's have a version number in their soname.
versioned := $(strip $(foreach so,$(install-lib.so),\
			       $(patsubst %,$(so),$($(so)-version))))

install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))

# For libraries whose soname have version numbers, we install two files:
#	$(inst_libdir)/libfoo.so	-- for linking, symlink or ld script
#	$(inst_slibdir)/libfoo.so.NN	-- for loading by SONAME
install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
		      $(foreach L,$(install-lib.so-versioned),\
				$(inst_libdir)/$L \
				$(inst_slibdir)/$L$($L-version))

# Install all the unversioned shared libraries.
$(install-lib.so-unversioned:%=$(inst_slibdir)/%): $(inst_slibdir)/%.so: \
    $(objpfx)%.so $(+force)
	$(do-install-program)

ifneq ($(findstring -s,$(LN_S)),)
define make-link
rm -f $@.new
$(SHELL) $(..)scripts/rellns-sh $< $@.new
mv -f $@.new $@
endef
define make-link-multidir
$(patsubst %/,cd %,$(objpfx)); \
  $(addprefix $(abspath $(..)scripts/mkinstalldirs) ,$(dir $(multidir))); \
  $(LN_S) . $(multidir) 2> /dev/null; \
  test -L $(multidir)
endef
else
# If we have no symbolic links don't bother with rellns-sh.
define make-link
rm -f $@.new
$(LN_S) $< $@.new
mv -f $@.new $@
endef
define make-link-multidir
$(make-target-directory)
ln -f $(objpfx)/$(@F) $@
endef
endif

ifdef libc.so-version
$(inst_slibdir)/libc.so$(libc.so-version): $(common-objpfx)libc.so $(+force)
	$(do-install-program)

install: $(inst_slibdir)/libc.so$(libc.so-version)

# This fragment of linker script gives the OUTPUT_FORMAT statement
# for the configuration we are building.  We put this statement into
# the linker scripts we install for -lc et al so that they will not be
# used by a link for a different format on a multi-architecture system.
$(common-objpfx)format.lds: $(common-objpfx)config.make \
			    $(common-objpfx)config.h $(..)Makerules
	$(LINK.o) -shared -nostdlib -nostartfiles \
		  -x assembler /dev/null -o $@.so
	$(OBJDUMP) -f $@.so | sed -n 's/.*file format \(.*\)/OUTPUT_FORMAT(\1)/;T;p' > $@
	rm -f $@.so
common-generated += format.lds

ifndef subdir
# What we install as libc.so for programs to link against is in fact a
# link script.  It contains references for the various libraries we need.
# The libc.so object is not complete since some functions are only defined
# in libc_nonshared.a.
# We need to use absolute paths since otherwise local copies (if they exist)
# of the files are taken by the linker.
install: $(inst_libdir)/libc.so
$(inst_libdir)/libc.so: $(common-objpfx)format.lds \
			$(common-objpfx)libc.so$(libc.so-version) \
			$(inst_libdir)/$(patsubst %,$(libtype.oS),\
						  $(libprefix)$(libc-name)) \
			$(+force)
	(echo '/* GNU ld script';\
	 echo '   Use the shared library, but some functions are only in';\
	 echo '   the static library, so try that secondarily.  */';\
	 cat $<; \
	 echo 'GROUP ( $(slibdir)/libc.so$(libc.so-version)' \
	      '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)$(libc-name))'\
	      ' AS_NEEDED (' $(rtlddir)/$(rtld-installed-name) ') )' \
	) > $@.new
	mv -f $@.new $@

endif

else
install: $(inst_slibdir)/libc.so
$(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
	$(do-install-program)
endif

ifneq (,$(versioned))
# Produce three sets of rules as above for all the smaller versioned libraries.

define o-iterator-doit
$(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
endef
object-suffixes-left := $(filter-out $(install-lib-ldscripts),$(versioned))
ifneq (,$(object-suffixes-left))
include $(o-iterator)
endif

# Make symlinks in the build directory, because the versioned names might
# be referenced by a DT_NEEDED in another library.
define o-iterator-doit
$(objpfx)$o$($o-version): $(objpfx)$o; $$(make-link)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)

generated += $(foreach o,$(versioned),$o$($o-version))

define o-iterator-doit
$(inst_slibdir)/$o$($o-version): $(objpfx)$o $(+force);
	$$(do-install-program)
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
endif # ifneq (,$(versioned))

define do-install-so
$(do-install-program)
$(patsubst %,$(LN_S) -f $(@F) \
			$(@D)/$(patsubst %$*.so,%,$(<F))$(libprefix)$*.so,\
	   $(filter-out %.so,$@))
endef

so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
$(foreach v,$(so-versions),\
	  $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
					       $(+force)
	$(do-install-so)
$(foreach v,$(so-versions),\
	  $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
	$(do-install-so)
endif

ifdef install-bin
$(addprefix $(inst_bindir)/,$(install-bin)): \
    $(inst_bindir)/%: $(objpfx)% $(+force)
	$(do-install-program)
endif
ifdef install-bin-script
$(addprefix $(inst_bindir)/,$(install-bin-script)): \
    $(inst_bindir)/%: $(objpfx)% $(+force)
	$(do-install-script)
endif
ifdef install-rootsbin
$(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
   $(inst_rootsbindir)/%: $(objpfx)% $(+force)
	$(do-install-program)
endif
ifdef install-sbin
$(addprefix $(inst_sbindir)/,$(install-sbin)): \
    $(inst_sbindir)/%: $(objpfx)% $(+force)
	$(do-install-program)
endif
ifdef install-lib
install-lib.a := $(filter lib%.a,$(install-lib))
install-lib.a := $(filter-out $(install-lib-ldscripts),$(install-lib.a))
install-lib-non.a := $(filter-out lib%.a,$(install-lib))
ifdef install-lib-non.a
$(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
  $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
	$(do-install)
endif
ifdef install-lib.a
$(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
  $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
	$(do-install)
endif
endif
ifdef install-data
$(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
	$(do-install)
endif
headers := $(strip $(headers))
ifdef headers
# This implicit rule installs headers from the source directory.
# It may be ignored in preference to rules from sysd-rules to find
# headers in the sysdeps tree.
$(inst_includedir)/%.h: $(objpfx)%.h $(+force)
	$(do-install)
$(inst_includedir)/%.h: $(common-objpfx)%.h $(+force)
	$(do-install)
$(inst_includedir)/%.h: %.h $(+force)
	$(do-install)
$(inst_includedir)/%.h: $(..)include/%.h $(+force)
	$(do-install)
headers-nonh := $(filter-out %.h,$(headers))
ifdef headers-nonh
$(addprefix $(inst_includedir)/,$(headers-nonh)): $(inst_includedir)/%: \
						 % $(+force)
	$(do-install)
endif	# headers-nonh
endif	# headers

.PHONY: install-bin-nosubdir install-bin-script-nosubdir \
	install-rootsbin-nosubdir install-sbin-nosubdir install-lib-nosubdir \
	install-data-nosubdir install-headers-nosubdir
install-bin-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin))
install-bin-script-nosubdir: $(addprefix $(inst_bindir)/,$(install-bin-script))
install-rootsbin-nosubdir: \
	$(addprefix $(inst_rootsbindir)/,$(install-rootsbin))
install-sbin-nosubdir: $(addprefix $(inst_sbindir)/,$(install-sbin))
install-lib-nosubdir: $(addprefix $(inst_libdir)/,\
		       $(patsubst lib%.a,lib$(libprefix)%.a,$(install-lib.a)) \
		       $(addprefix $(libprefix),$(install-lib-non.a)))
install-data-nosubdir: $(addprefix $(inst_datadir)/,$(install-data))
install-headers-nosubdir: $(addprefix $(inst_includedir)/,$(headers))
install-others-nosubdir: $(install-others)
install-others-programs-nosubdir: $(install-others-programs)

# We need all the `-nosubdir' targets so that `install' in the parent
# doesn't depend on several things which each iterate over the subdirs.
# This rule makes `install-FOO' always use `install-FOO-nosubdir' as a
# subroutine.  Then in the parent `install-FOO' also causes subdir makes.
install-%:: install-%-nosubdir ;

.PHONY: install install-no-libc.a-nosubdir
install-no-libc.a-nosubdir: install-headers-nosubdir install-data-nosubdir \
			    install-lib-nosubdir install-others-nosubdir
ifeq ($(build-programs),yes)
install-no-libc.a-nosubdir: install-bin-nosubdir install-bin-script-nosubdir \
			    install-rootsbin-nosubdir install-sbin-nosubdir \
			    install-others-programs-nosubdir
endif
install: install-no-libc.a-nosubdir

# Command to compile $< using the native libraries.
define native-compile
$(make-target-directory)
$(BUILD_CC) $($(basename $(<F))-CFLAGS) $(ALL_BUILD_CFLAGS) \
	    $< $(OUTPUT_OPTION) $(BUILD_LDFLAGS)
endef

# We always want to use configuration definitions.
ALL_BUILD_CFLAGS = $(BUILD_CFLAGS) $(BUILD_CPPFLAGS) -D_GNU_SOURCE \
		   -DIS_IN_build -include $(common-objpfx)config.h

# Support the GNU standard name for this target.
.PHONY: check
check: tests
# Special target to run tests which cannot be run unconditionally.
# Maintainers should use this target.
.PHONY: xcheck
xcheck: xtests

# Handle tests-time64 and xtests-time64 that should built with LFS
# and 64-bit time support.
include $(o-iterator)
define o-iterator-doit
$(foreach f,$(tests-time64) $(xtests-time64),\
	    $(objpfx)$(f)$(o)): CFLAGS += -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)

ifeq ($(have-time64-compat),yes)
tests += $(foreach t,$(tests-time64),$(t))
xtests += $(foreach t,$(xtests-time64),$(t))
endif

# The only difference between MODULE_NAME=testsuite and MODULE_NAME=nonlib is
# that almost all internal declarations from config.h, libc-symbols.h, and
# include/*.h are not available to 'testsuite' code, but are to 'nonlib' code.
all-testsuite := $(strip $(tests) $(xtests) $(test-srcs) $(test-extras) \
		 $(tests-container))
ifneq (,$(all-testsuite))
cpp-srcs-left = $(all-testsuite)
lib := testsuite
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif

all-nonlib := $(strip $(others) $(others-extras))
ifneq (,$(all-nonlib))
cpp-srcs-left = $(all-nonlib)
lib := nonlib
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif

# All internal tests use testsuite-internal module since for 64 bit time
# support is set as default for MODULE_NAME=nonlib (which include some
# installed programs).
all-testsuite-internal := $(strip $(tests-internal) $(test-internal-extras))
ifneq (,$(all-testsuite-internal))
cpp-srcs-left = $(all-testsuite-internal)
lib := testsuite-internal
include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
endif

ifeq ($(build-shared),yes)
# Generate normalized lists of symbols, versions, and data sizes.
# This is handy for checking against existing library binaries.

%.symlist: $(..)scripts/abilist.awk %.dynsym
	LC_ALL=C $(AWK) -f $^ > $@T
	mv -f $@T $@

%.dynsym: %.so
	LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
	mv -f $@T $@

vpath %.abilist $(+sysdep_dirs)

# The .PRECIOUS rule prevents the files built by an implicit rule whose
# target pattern is %.symlist from being considered "intermediate files"
# and automatically removed.  We only want these files to be removed by
# 'make clean', which is handled by the 'generated' variable.
.PRECIOUS: %.symlist
generated += $(extra-libs:=.symlist)

$(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
			  $(objpfx)%.symlist
	$(check-abi); \
	$(evaluate-test)
$(objpfx)check-abi-%.out: $(common-objpfx)config.make %.abilist \
			  $(common-objpfx)%.symlist
	$(check-abi); \
	$(evaluate-test)
define check-abi
	diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^) > $@
endef

update-abi-%: $(objpfx)%.symlist %.abilist
	$(update-abi)
update-abi-%: $(common-objpfx)%.symlist %.abilist
	$(update-abi)
define update-abi
@if cmp -s $^ 2> /dev/null; \
 then \
      echo '+++ $(filter %.abilist,$^) is unchanged'; \
 else cp -f $^; \
      echo '*** Now check $(filter %.abilist,$^) changes for correctness ***'; \
 fi
endef

# Patch all .abilist files for one DSO.  The find command locates abilist
# files for all architectures.  The abilist files in /generic/ are
# filtered out because these are expected to remain empty.
define update-all-abi
$(SHELL) $(..)scripts/update-abilist.sh $^ \
  $$(find $(..)sysdeps -name '$*.abilist' \! -path '*/generic/*')
endef
update-all-abi-%: %.abilist $(objpfx)%.symlist
	$(update-all-abi)
update-all-abi-%: %.abilist $(common-objpfx)%.symlist
	$(update-all-abi)

.PHONY: update-abi update-all-abi check-abi
update-abi: $(patsubst %.so,update-abi-%,$(install-lib.so-versioned))
update-all-abi: $(patsubst %.so,update-all-abi-%,$(install-lib.so-versioned))
check-abi-list = $(patsubst %.so,$(objpfx)check-abi-%.out, \
				 $(install-lib.so-versioned))
check-abi: $(check-abi-list)
ifdef subdir
subdir_check-abi: check-abi
subdir_update-abi: update-abi
subdir_update-all-abi: update-all-abi
else
check-abi: subdir_check-abi
	if grep -q '^FAIL:' $(objpfx)*/check-abi*.test-result; then \
		cat $(objpfx)*/check-abi*.out && exit 1; fi
update-abi: subdir_update-abi
update-all-abi: subdir_update-all-abi
endif

ifeq ($(subdir),elf)
check-abi: $(objpfx)check-abi-libc.out
tests-special += $(objpfx)check-abi-libc.out
update-abi: update-abi-libc
update-all-abi: update-all-abi-libc
common-generated += libc.symlist
endif

ifeq ($(build-shared),yes)
ifdef subdir
tests-special += $(check-abi-list)
endif
endif

endif

# These will have been set by sysdeps/posix/Makefile.
L_tmpnam  ?= 1
TMP_MAX   ?= 0
L_ctermid ?= 1
L_cuserid ?= 1

stdio_lim = $(common-objpfx)bits/stdio_lim.h

$(stdio_lim:lim.h=%.h) $(stdio_lim:lim.h=%.d): $(stdio_lim:lim.h=%.st); @:
$(stdio_lim:h=st): $(..)stdio-common/stdio_lim.h.in $(..)Rules \
		   $(common-objpfx)config.make
	$(make-target-directory)
	{ echo '#include "$(..)posix/bits/posix1_lim.h"';		\
	} |								\
	$(CC) -E -dM -MD -MP -MF $(@:st=dT) -MT '$(@:st=h) $(@:st=d)' 	\
	      $(CPPUNDEFS) $(+includes) -xc - -o $(@:st=hT)
	sed $(sed-remove-objpfx) $(sed-remove-dotdot)			\
	    $(@:st=dT) > $(@:st=dt)
	mv -f $(@:st=dt) $(@:st=d)
	fopen_max=`sed -n 's/^#define OPEN_MAX //1p' $(@:st=hT)`; 	\
	filename_max=`sed -n 's/^#define PATH_MAX //1p' $(@:st=hT)`;	\
	fopen_max=$${fopen_max:-16};					\
	filename_max=$${filename_max:-1024};				\
	sed -e "s/@FOPEN_MAX@/$$fopen_max/"				\
	    -e "s/@FILENAME_MAX@/$$filename_max/"			\
	    -e "s/@L_tmpnam@/$(L_tmpnam)/"				\
	    -e "s/@TMP_MAX@/$(TMP_MAX)/"				\
	    -e "s/@L_ctermid@/$(L_ctermid)/"				\
	    -e "s/@L_cuserid@/$(L_cuserid)/"				\
	    $< > $(@:st=h.new)
	$(move-if-change) $(@:st=h.new) $(@:st=h)
# Remove these last so that they can be examined if something went wrong.
	rm -f $(@:st=hT) $(@:st=dT) $(@:st=dt)
	touch $@
# Get dependencies.
ifndef no_deps
-include $(stdio_lim:h=d)
endif
common-generated += bits/stdio_lim.h bits/stdio_lim.d bits/stdio_lim.st

FORCE:

.PHONY: echo-headers
echo-headers:
	@echo $(headers)

%.bz2: %; bzip2 -9vk $<
%.gz: %; gzip -9vnc $< > $@.new && mv -f $@.new $@
%.xz: %; xz -9evk $<

# Common cleaning targets.

.PHONY: common-mostlyclean common-clean mostlyclean clean do-tests-clean
clean: common-clean
mostlyclean: common-mostlyclean

do-tests-clean:
	-rm -f $(addprefix $(objpfx),$(addsuffix .out,$(tests) \
						      $(tests-internal) \
						      $(xtests) \
						      $(test-srcs)) \
				     $(addsuffix .test-result,$(tests) \
							      $(tests-internal) \
							      $(xtests) \
							      $(test-srcs)))

# Remove the object files.
common-mostlyclean:
	-rm -f $(addprefix $(objpfx),$(tests) $(tests-internal) $(xtests) \
				     $(test-srcs) \
				     $(others) $(sysdep-others) stubs \
				     $(addsuffix .o,$(tests) \
						    $(tests-internal) \
						    $(xtests) \
						    $(test-srcs) \
						    $(others) \
						    $(sysdep-others)) \
				     $(addsuffix .out,$(tests) \
						      $(tests-internal) \
						      $(xtests) \
						      $(test-srcs)) \
				     $(addsuffix .test-result,$(tests) \
							      $(tests-internal) \
							      $(xtests) \
							      $(test-srcs)))
	-rm -f $(addprefix $(objpfx),$(extra-objs) $(extra-test-objs) \
				     $(install-lib) $(install-lib.so) \
				     $(install-lib.so:%.so=%_pic.a))
	-rm -f core
	-rm -f $(objpfx)rtld-*.os
	$(rmobjs)
define rmobjs
$(foreach o,$(object-suffixes-for-libc),
-rm -f $(objpfx)stamp$o $(o-objects))
endef

# Also remove the dependencies and generated source files.
common-clean: common-mostlyclean
	-rm -f $(addprefix $(objpfx),$(generated))
	-rm -f $(objpfx)*.d $(objpfx)*.dt
	-rm -fr $(addprefix $(objpfx),$(generated-dirs))
	-rm -f $(addprefix $(common-objpfx),$(common-generated))
	-rm -f $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)

# Produce a file `stubs' which contains `#define __stub_FUNCTION'
# for each function which is a stub.

ifdef objpfx
.PHONY: stubs # The parent Makefile calls this target.
stubs: $(objpfx)stubs
endif
objs-for-stubs := $(foreach o,$(object-suffixes-for-libc),$(o-objects)) \
		  $(addprefix $(objpfx),$(extra-objs))
$(objpfx)stubs: $(objs-for-stubs)
ifneq (,$(strip $(objs-for-stubs)))
	(cd $(objpfx).; $(OBJDUMP) -h $(patsubst $(objpfx)%,%,$^)) | \
	$(AWK) '/\.gnu\.glibc-stub\./ { \
		  sub(/\.gnu\.glibc-stub\./, "", $$2); \
		  stubs[$$2] = 1; } \
		END { for (s in stubs) print "#define __stub_" s }' > $@T
	mv -f $@T $@
else
	> $@
endif

ifneq (,$(strip $(gpl2lgpl)))
ifneq (,$(wildcard $(..)gpl2lgpl.sed))
# Snarf from the master source and frob the copying notice.
$(gpl2lgpl): %: $(..)gpl2lgpl.sed /home/gd/gnu/lib/%
	sed -f $^ > $@-tmp
# So I don't edit them by mistake.
	chmod a-w $@-tmp
	mv -f $@-tmp $@
endif
endif

# Local Variables:
# mode: makefile
# End: