summaryrefslogtreecommitdiffstats
path: root/tools/perf/Makefile.config
blob: c2504c39bdcb899235352962e05684570f11bde4 (plain)
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
# SPDX-License-Identifier: GPL-2.0-only

ifeq ($(src-perf),)
src-perf := $(srctree)/tools/perf
endif

ifeq ($(obj-perf),)
obj-perf := $(OUTPUT)
endif

ifneq ($(obj-perf),)
obj-perf := $(abspath $(obj-perf))/
endif

$(shell printf "" > $(OUTPUT).config-detected)
detected     = $(shell echo "$(1)=y"       >> $(OUTPUT).config-detected)
detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)

CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))

# Enabled Wthread-safety analysis for clang builds.
ifeq ($(CC_NO_CLANG), 0)
  CFLAGS += -Wthread-safety
endif

include $(srctree)/tools/scripts/Makefile.arch

$(call detected_var,SRCARCH)

NO_PERF_REGS := 1

ifneq ($(NO_SYSCALL_TABLE),1)
  NO_SYSCALL_TABLE := 1

  ifeq ($(SRCARCH),x86)
    ifeq (${IS_64_BIT}, 1)
      NO_SYSCALL_TABLE := 0
    endif
  else
    ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips))
      NO_SYSCALL_TABLE := 0
    endif
  endif

  ifneq ($(NO_SYSCALL_TABLE),1)
    CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
  endif
endif

# Additional ARCH settings for ppc
ifeq ($(SRCARCH),powerpc)
  NO_PERF_REGS := 0
  CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
  LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
endif

# Additional ARCH settings for x86
ifeq ($(SRCARCH),x86)
  $(call detected,CONFIG_X86)
  ifeq (${IS_64_BIT}, 1)
    CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
    ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
    LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
    $(call detected,CONFIG_X86_64)
  else
    LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
  endif
  NO_PERF_REGS := 0
endif

ifeq ($(SRCARCH),arm)
  NO_PERF_REGS := 0
  LIBUNWIND_LIBS = -lunwind -lunwind-arm
endif

ifeq ($(SRCARCH),arm64)
  NO_PERF_REGS := 0
  CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
  LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
endif

ifeq ($(SRCARCH),riscv)
  NO_PERF_REGS := 0
endif

ifeq ($(SRCARCH),csky)
  NO_PERF_REGS := 0
endif

ifeq ($(ARCH),s390)
  NO_PERF_REGS := 0
  CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
endif

ifeq ($(ARCH),mips)
  NO_PERF_REGS := 0
  CFLAGS += -I$(OUTPUT)arch/mips/include/generated
  LIBUNWIND_LIBS = -lunwind -lunwind-mips
endif

ifeq ($(NO_PERF_REGS),0)
  $(call detected,CONFIG_PERF_REGS)
endif

# So far there's only x86 and arm libdw unwind support merged in perf.
# Disable it on all other architectures in case libdw unwind
# support is detected in system. Add supported architectures
# to the check.
ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv))
  NO_LIBDW_DWARF_UNWIND := 1
endif

ifeq ($(LIBUNWIND_LIBS),)
  NO_LIBUNWIND := 1
endif
#
# For linking with debug library, run like:
#
#   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
#

libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
define libunwind_arch_set_flags_code
  FEATURE_CHECK_CFLAGS-libunwind-$(1)  = -I$(LIBUNWIND_DIR)/include
  FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
endef

ifdef LIBUNWIND_DIR
  LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
  LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
  LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64
  $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
endif

# Set per-feature check compilation flags
FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)

FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64

FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto

ifdef CSINCLUDES
  LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
endif
OPENCSDLIBS := -lopencsd_c_api
ifeq ($(findstring -static,${LDFLAGS}),-static)
  OPENCSDLIBS += -lopencsd -lstdc++
endif
ifdef CSLIBS
  LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
endif
FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)

ifeq ($(NO_PERF_REGS),0)
  CFLAGS += -DHAVE_PERF_REGS_SUPPORT
endif

# for linking with debug library, run like:
# make DEBUG=1 LIBDW_DIR=/opt/libdw/
ifdef LIBDW_DIR
  LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
  LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
endif
DWARFLIBS := -ldw
ifeq ($(findstring -static,${LDFLAGS}),-static)
  DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
endif
FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)

# for linking with debug library, run like:
# make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
ifdef LIBBABELTRACE_DIR
  LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
  LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
endif
FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf

ifdef LIBZSTD_DIR
  LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
  LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
endif
FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)

FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
# include ARCH specific config
-include $(src-perf)/arch/$(SRCARCH)/Makefile

ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
  CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
endif

include $(srctree)/tools/scripts/utilities.mak

ifeq ($(call get-executable,$(FLEX)),)
  dummy := $(error Error: $(FLEX) is missing on this system, please install it)
endif

ifeq ($(call get-executable,$(BISON)),)
  dummy := $(error Error: $(BISON) is missing on this system, please install it)
endif

ifneq ($(OUTPUT),)
  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
  endif
endif

# Treat warnings as errors unless directed not to
ifneq ($(WERROR),0)
  CORE_CFLAGS += -Werror
  CXXFLAGS += -Werror
  HOSTCFLAGS += -Werror
endif

ifndef DEBUG
  DEBUG := 0
endif

ifeq ($(DEBUG),0)
ifeq ($(CC_NO_CLANG), 0)
  CORE_CFLAGS += -O3
else
  CORE_CFLAGS += -O6
endif
endif

ifdef PARSER_DEBUG
  PARSER_DEBUG_BISON := -t
  PARSER_DEBUG_FLEX  := -d
  CFLAGS             += -DPARSER_DEBUG
  $(call detected_var,PARSER_DEBUG_BISON)
  $(call detected_var,PARSER_DEBUG_FLEX)
endif

# Try different combinations to accommodate systems that only have
# python[2][3]-config in weird combinations in the following order of
# priority from lowest to highest:
#   * python2-config as per pep-0394.
#   * python-config
#   * python3-config
#   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
#
PYTHON_AUTO := python-config
PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))

# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
ifdef PYTHON
  ifndef PYTHON_CONFIG
    PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
    PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
                          $(call $(error $(PYTHON)-config not found)))
  endif
endif

# Select either auto detected python and python-config or use user supplied values if they are
# defined. get-executable-or-default fails with an error if the first argument is supplied but
# doesn't exist.
override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))

grep-libs  = $(filter -l%,$(1))
strip-libs  = $(filter-out -l%,$(1))

PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))

# Python 3.8 changed the output of `python-config --ldflags` to not include the
# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
# libpython fails if that flag is not included in LDFLAGS
ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
  PYTHON_CONFIG_LDFLAGS := --ldflags --embed
else
  PYTHON_CONFIG_LDFLAGS := --ldflags
endif

ifdef PYTHON_CONFIG
  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
  FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
  ifeq ($(CC_NO_CLANG), 0)
    PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
  endif
endif

FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)

FEATURE_CHECK_LDFLAGS-libaio = -lrt

CORE_CFLAGS += -fno-omit-frame-pointer
CORE_CFLAGS += -ggdb3
CORE_CFLAGS += -funwind-tables
CORE_CFLAGS += -Wall
CORE_CFLAGS += -Wextra
CORE_CFLAGS += -std=gnu11

CXXFLAGS += -std=gnu++14 -fno-exceptions -fno-rtti
CXXFLAGS += -Wall
CXXFLAGS += -fno-omit-frame-pointer
CXXFLAGS += -ggdb3
CXXFLAGS += -funwind-tables
CXXFLAGS += -Wno-strict-aliasing

HOSTCFLAGS += -Wall
HOSTCFLAGS += -Wextra

# Enforce a non-executable stack, as we may regress (again) in the future by
# adding assembler files missing the .GNU-stack linker note.
LDFLAGS += -Wl,-z,noexecstack

EXTLIBS = -lpthread -lrt -lm -ldl

ifneq ($(TCMALLOC),)
  CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
  EXTLIBS += -ltcmalloc
endif

ifeq ($(FEATURES_DUMP),)
# We will display at the end of this Makefile.config, using $(call feature_display_entries),
# as we may retry some feature detection here.
  FEATURE_DISPLAY_DEFERRED := 1
include $(srctree)/tools/build/Makefile.feature
else
include $(FEATURES_DUMP)
endif

ifeq ($(feature-stackprotector-all), 1)
  CORE_CFLAGS += -fstack-protector-all
endif

ifeq ($(DEBUG),0)
  ifeq ($(feature-fortify-source), 1)
    CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
  endif
endif

INC_FLAGS += -I$(src-perf)/util/include
INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
INC_FLAGS += -I$(srctree)/tools/include/
INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
INC_FLAGS += -I$(srctree)/tools/include/uapi
INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/

# $(obj-perf)      for generated common-cmds.h
# $(obj-perf)/util for generated bison/flex headers
ifneq ($(OUTPUT),)
INC_FLAGS += -I$(obj-perf)/util
INC_FLAGS += -I$(obj-perf)
endif

INC_FLAGS += -I$(src-perf)/util
INC_FLAGS += -I$(src-perf)

CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE

CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
CXXFLAGS += $(INC_FLAGS)

LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)

ifeq ($(feature-pthread-attr-setaffinity-np), 1)
  CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
endif

ifeq ($(feature-pthread-barrier), 1)
  CFLAGS += -DHAVE_PTHREAD_BARRIER
endif

ifndef NO_BIONIC
  $(call feature_check,bionic)
  ifeq ($(feature-bionic), 1)
    BIONIC := 1
    CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
    CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
    EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
    EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
  endif
endif

ifeq ($(feature-eventfd), 1)
  CFLAGS += -DHAVE_EVENTFD_SUPPORT
endif

ifeq ($(feature-get_current_dir_name), 1)
  CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
endif

ifeq ($(feature-gettid), 1)
  CFLAGS += -DHAVE_GETTID
endif

ifeq ($(feature-file-handle), 1)
  CFLAGS += -DHAVE_FILE_HANDLE
endif

ifdef NO_LIBELF
  NO_DWARF := 1
  NO_DEMANGLE := 1
  NO_LIBUNWIND := 1
  NO_LIBDW_DWARF_UNWIND := 1
  NO_LIBBPF := 1
  NO_JVMTI := 1
else
  ifeq ($(feature-libelf), 0)
    ifeq ($(feature-glibc), 1)
      LIBC_SUPPORT := 1
    endif
    ifeq ($(BIONIC),1)
      LIBC_SUPPORT := 1
    endif
    ifeq ($(LIBC_SUPPORT),1)
      msg := $(warning No libelf found. Disables 'probe' tool, jvmti and BPF support in 'perf record'. Please install libelf-dev, libelf-devel or elfutils-libelf-devel);

      NO_LIBELF := 1
      NO_DWARF := 1
      NO_DEMANGLE := 1
      NO_LIBUNWIND := 1
      NO_LIBDW_DWARF_UNWIND := 1
      NO_LIBBPF := 1
      NO_JVMTI := 1
    else
      ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
        ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
          msg := $(error No libasan found, please install libasan);
        endif
      endif

      ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
        ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
          msg := $(error No libubsan found, please install libubsan);
        endif
      endif

      ifneq ($(filter s% -static%,$(LDFLAGS),),)
        msg := $(error No static glibc found, please install glibc-static);
      else
        msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
      endif
    endif
  else
    ifndef NO_LIBDW_DWARF_UNWIND
      ifneq ($(feature-libdw-dwarf-unwind),1)
        NO_LIBDW_DWARF_UNWIND := 1
        msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
      endif
    endif
    ifneq ($(feature-dwarf), 1)
      ifndef NO_DWARF
        msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
        NO_DWARF := 1
      endif
    else
      ifneq ($(feature-dwarf_getlocations), 1)
        msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
      else
        CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
      endif # dwarf_getlocations
    endif # Dwarf support
  endif # libelf support
endif # NO_LIBELF

ifeq ($(feature-glibc), 1)
  CFLAGS += -DHAVE_GLIBC_SUPPORT
endif

ifeq ($(feature-libaio), 1)
  ifndef NO_AIO
    CFLAGS += -DHAVE_AIO_SUPPORT
  endif
endif

ifdef NO_DWARF
  NO_LIBDW_DWARF_UNWIND := 1
endif

ifeq ($(feature-sched_getcpu), 1)
  CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
endif

ifeq ($(feature-setns), 1)
  CFLAGS += -DHAVE_SETNS_SUPPORT
  $(call detected,CONFIG_SETNS)
endif

ifdef CORESIGHT
  $(call feature_check,libopencsd)
  ifeq ($(feature-libopencsd), 1)
    CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
    ifeq ($(feature-reallocarray), 0)
      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
    endif
    LDFLAGS += $(LIBOPENCSD_LDFLAGS)
    EXTLIBS += $(OPENCSDLIBS)
    $(call detected,CONFIG_LIBOPENCSD)
    ifdef CSTRACE_RAW
      CFLAGS += -DCS_DEBUG_RAW
      ifeq (${CSTRACE_RAW}, packed)
        CFLAGS += -DCS_RAW_PACKED
      endif
    endif
  else
    dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
  endif
endif

ifndef NO_LIBELF
  CFLAGS += -DHAVE_LIBELF_SUPPORT
  EXTLIBS += -lelf
  $(call detected,CONFIG_LIBELF)

  ifeq ($(feature-libelf-getphdrnum), 1)
    CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
  endif

  ifeq ($(feature-libelf-gelf_getnote), 1)
    CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
  else
    msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
  endif

  ifeq ($(feature-libelf-getshdrstrndx), 1)
    CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
  endif

  ifndef NO_LIBDEBUGINFOD
    $(call feature_check,libdebuginfod)
    ifeq ($(feature-libdebuginfod), 1)
      CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
      EXTLIBS += -ldebuginfod
    endif
  endif

  ifndef NO_DWARF
    ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
      msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
      NO_DWARF := 1
    else
      CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
      LDFLAGS += $(LIBDW_LDFLAGS)
      EXTLIBS += ${DWARFLIBS}
      $(call detected,CONFIG_DWARF)
    endif # PERF_HAVE_DWARF_REGS
  endif # NO_DWARF

  ifndef NO_LIBBPF
    ifeq ($(feature-bpf), 1)
      CFLAGS += -DHAVE_LIBBPF_SUPPORT
      $(call detected,CONFIG_LIBBPF)

      # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
      $(call feature_check,libbpf)
      ifdef LIBBPF_DYNAMIC
        ifeq ($(feature-libbpf), 1)
          EXTLIBS += -lbpf
          $(call detected,CONFIG_LIBBPF_DYNAMIC)

          $(call feature_check,libbpf-btf__load_from_kernel_by_id)
          ifeq ($(feature-libbpf-btf__load_from_kernel_by_id), 1)
            CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
          endif
          $(call feature_check,libbpf-bpf_prog_load)
          ifeq ($(feature-libbpf-bpf_prog_load), 1)
            CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD
          endif
          $(call feature_check,libbpf-bpf_object__next_program)
          ifeq ($(feature-libbpf-bpf_object__next_program), 1)
            CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM
          endif
          $(call feature_check,libbpf-bpf_object__next_map)
          ifeq ($(feature-libbpf-bpf_object__next_map), 1)
            CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP
          endif
          $(call feature_check,libbpf-bpf_program__set_insns)
          ifeq ($(feature-libbpf-bpf_program__set_insns), 1)
            CFLAGS += -DHAVE_LIBBPF_BPF_PROGRAM__SET_INSNS
          endif
          $(call feature_check,libbpf-btf__raw_data)
          ifeq ($(feature-libbpf-btf__raw_data), 1)
            CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA
          endif
          $(call feature_check,libbpf-bpf_map_create)
          ifeq ($(feature-libbpf-bpf_map_create), 1)
            CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE
          endif
        else
          dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
        endif
      else
	CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
        CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD
        CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM
        CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP
        CFLAGS += -DHAVE_LIBBPF_BPF_PROGRAM__SET_INSNS
        CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA
        CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE
      endif
    endif

    ifndef NO_DWARF
      ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
        CFLAGS += -DHAVE_BPF_PROLOGUE
        $(call detected,CONFIG_BPF_PROLOGUE)
      else
        msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
      endif
    else
      msg := $(warning DWARF support is off, BPF prologue is disabled);
    endif

  endif # NO_LIBBPF
endif # NO_LIBELF

ifndef NO_SDT
  ifneq ($(feature-sdt), 1)
    msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
    NO_SDT := 1;
  else
    CFLAGS += -DHAVE_SDT_EVENT
    $(call detected,CONFIG_SDT_EVENT)
  endif
endif

ifdef PERF_HAVE_JITDUMP
  ifndef NO_LIBELF
    $(call detected,CONFIG_JITDUMP)
    CFLAGS += -DHAVE_JITDUMP
  endif
endif

ifeq ($(SRCARCH),powerpc)
  ifndef NO_DWARF
    CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
  endif
endif

ifndef NO_LIBUNWIND
  have_libunwind :=

  $(call feature_check,libunwind-x86)
  ifeq ($(feature-libunwind-x86), 1)
    $(call detected,CONFIG_LIBUNWIND_X86)
    CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
    LDFLAGS += -lunwind-x86
    EXTLIBS_LIBUNWIND += -lunwind-x86
    have_libunwind = 1
  endif

  $(call feature_check,libunwind-aarch64)
  ifeq ($(feature-libunwind-aarch64), 1)
    $(call detected,CONFIG_LIBUNWIND_AARCH64)
    CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
    LDFLAGS += -lunwind-aarch64
    EXTLIBS_LIBUNWIND += -lunwind-aarch64
    have_libunwind = 1
    $(call feature_check,libunwind-debug-frame-aarch64)
    ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
      msg := $(warning No debug_frame support found in libunwind-aarch64);
      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
    endif
  endif

  ifneq ($(feature-libunwind), 1)
    msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
    NO_LOCAL_LIBUNWIND := 1
  else
    have_libunwind := 1
    $(call detected,CONFIG_LOCAL_LIBUNWIND)
  endif

  ifneq ($(have_libunwind), 1)
    NO_LIBUNWIND := 1
  endif
else
  NO_LOCAL_LIBUNWIND := 1
endif

ifndef NO_LIBBPF
  ifneq ($(feature-bpf), 1)
    msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
    NO_LIBBPF := 1
  endif
endif

ifdef BUILD_BPF_SKEL
  $(call feature_check,clang-bpf-co-re)
  ifeq ($(feature-clang-bpf-co-re), 0)
    dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
  endif
  ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
    dummy := $(error Error: BPF skeleton support requires libbpf)
  endif
  $(call detected,CONFIG_PERF_BPF_SKEL)
  CFLAGS += -DHAVE_BPF_SKEL
endif

dwarf-post-unwind := 1
dwarf-post-unwind-text := BUG

# setup DWARF post unwinder
ifdef NO_LIBUNWIND
  ifdef NO_LIBDW_DWARF_UNWIND
    msg := $(warning Disabling post unwind, no support found.);
    dwarf-post-unwind := 0
  else
    dwarf-post-unwind-text := libdw
    $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
  endif
else
  dwarf-post-unwind-text := libunwind
  $(call detected,CONFIG_LIBUNWIND)
  # Enable libunwind support by default.
  ifndef NO_LIBDW_DWARF_UNWIND
    NO_LIBDW_DWARF_UNWIND := 1
  endif
endif

ifeq ($(dwarf-post-unwind),1)
  CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
  $(call detected,CONFIG_DWARF_UNWIND)
else
  NO_DWARF_UNWIND := 1
endif

ifndef NO_LOCAL_LIBUNWIND
  ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
    $(call feature_check,libunwind-debug-frame)
    ifneq ($(feature-libunwind-debug-frame), 1)
      msg := $(warning No debug_frame support found in libunwind);
      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
    endif
  else
    # non-ARM has no dwarf_find_debug_frame() function:
    CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
  endif
  EXTLIBS += $(LIBUNWIND_LIBS)
  LDFLAGS += $(LIBUNWIND_LIBS)
endif
ifeq ($(findstring -static,${LDFLAGS}),-static)
  # gcc -static links libgcc_eh which contans piece of libunwind
  LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
endif

ifndef NO_LIBUNWIND
  CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
  CFLAGS  += $(LIBUNWIND_CFLAGS)
  LDFLAGS += $(LIBUNWIND_LDFLAGS)
  EXTLIBS += $(EXTLIBS_LIBUNWIND)
endif

ifneq ($(NO_LIBTRACEEVENT),1)
  ifeq ($(NO_SYSCALL_TABLE),0)
    $(call detected,CONFIG_TRACE)
  else
    ifndef NO_LIBAUDIT
      $(call feature_check,libaudit)
      ifneq ($(feature-libaudit), 1)
        msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
        NO_LIBAUDIT := 1
      else
        CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
        EXTLIBS += -laudit
        $(call detected,CONFIG_TRACE)
      endif
    endif
  endif
endif

ifndef NO_LIBCRYPTO
  ifneq ($(feature-libcrypto), 1)
    msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
    NO_LIBCRYPTO := 1
  else
    CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
    EXTLIBS += -lcrypto
    $(call detected,CONFIG_CRYPTO)
  endif
endif

ifdef NO_NEWT
  NO_SLANG=1
endif

ifndef NO_SLANG
  ifneq ($(feature-libslang), 1)
    ifneq ($(feature-libslang-include-subdir), 1)
      msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
      NO_SLANG := 1
    else
      CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
    endif
  endif
  ifndef NO_SLANG
    # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
    CFLAGS += -DHAVE_SLANG_SUPPORT
    EXTLIBS += -lslang
    $(call detected,CONFIG_SLANG)
  endif
endif

ifdef GTK2
  FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
  $(call feature_check,gtk2)
  ifneq ($(feature-gtk2), 1)
    msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
    NO_GTK2 := 1
  else
    $(call feature_check,gtk2-infobar)
    ifeq ($(feature-gtk2-infobar), 1)
      GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
    endif
    CFLAGS += -DHAVE_GTK2_SUPPORT
    GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
    GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
    EXTLIBS += -ldl
  endif
endif

ifdef NO_LIBPERL
  CFLAGS += -DNO_LIBPERL
else
  PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
  PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
  PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
  PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
  PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
  PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
  PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
  FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)

  ifneq ($(feature-libperl), 1)
    CFLAGS += -DNO_LIBPERL
    NO_LIBPERL := 1
    msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
  else
    LDFLAGS += $(PERL_EMBED_LDFLAGS)
    EXTLIBS += $(PERL_EMBED_LIBADD)
    CFLAGS += -DHAVE_LIBPERL_SUPPORT
    ifeq ($(CC_NO_CLANG), 0)
      CFLAGS += -Wno-compound-token-split-by-macro
    endif
    $(call detected,CONFIG_LIBPERL)
  endif
endif

ifeq ($(feature-timerfd), 1)
  CFLAGS += -DHAVE_TIMERFD_SUPPORT
else
  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
endif

disable-python = $(eval $(disable-python_code))
define disable-python_code
  CFLAGS += -DNO_LIBPYTHON
  $(warning $1)
  NO_LIBPYTHON := 1
endef

PYTHON_EXTENSION_SUFFIX := '.so'
ifdef NO_LIBPYTHON
  $(call disable-python,Python support disabled by user)
else

  ifndef PYTHON
    $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
  else
    PYTHON_WORD := $(call shell-wordify,$(PYTHON))

    ifndef PYTHON_CONFIG
      $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
    else

      ifneq ($(feature-libpython), 1)
        $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
      else
         LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
         EXTLIBS += $(PYTHON_EMBED_LIBADD)
         PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
         ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
           PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
           LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
	 else
           msg := $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent);
         endif
         CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
         $(call detected,CONFIG_LIBPYTHON)
      endif
    endif
  endif
endif

ifneq ($(NO_JEVENTS),1)
  ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
    NO_JEVENTS := 1
  endif
endif
ifneq ($(NO_JEVENTS),1)
  NO_JEVENTS := 0
  ifndef PYTHON
    $(warning No python interpreter disabling jevent generation)
    NO_JEVENTS := 1
  else
    # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
    JEVENTS_PYTHON_GOOD := $(shell $(PYTHON) -c 'import sys;print("1" if(sys.version_info.major >= 3 and sys.version_info.minor >= 6) else "0")' 2> /dev/null)
    ifneq ($(JEVENTS_PYTHON_GOOD), 1)
      $(warning Python interpreter too old (older than 3.6) disabling jevent generation)
      NO_JEVENTS := 1
    endif
  endif
endif

ifndef NO_LIBBFD
  ifeq ($(feature-libbfd), 1)
    EXTLIBS += -lbfd -lopcodes
  else
    # we are on a system that requires -liberty and (maybe) -lz
    # to link against -lbfd; test each case individually here

    # call all detections now so we get correct
    # status in VF output
    $(call feature_check,libbfd-liberty)
    $(call feature_check,libbfd-liberty-z)

    ifeq ($(feature-libbfd-liberty), 1)
      EXTLIBS += -lbfd -lopcodes -liberty
    else
      ifeq ($(feature-libbfd-liberty-z), 1)
        EXTLIBS += -lbfd -lopcodes -liberty -lz
      endif
    endif
    $(call feature_check,disassembler-four-args)
    $(call feature_check,disassembler-init-styled)
  endif

  ifeq ($(feature-libbfd-buildid), 1)
    CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
  else
    msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
  endif
endif

ifdef NO_DEMANGLE
  CFLAGS += -DNO_DEMANGLE
else
  ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
    EXTLIBS += -liberty
  else
    ifeq ($(filter -liberty,$(EXTLIBS)),)
      $(call feature_check,cplus-demangle)

      # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT
      # or any of 'bfd iberty z' trinity
      ifeq ($(feature-cplus-demangle), 1)
        EXTLIBS += -liberty
      else
        msg := $(warning No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling)
        CFLAGS += -DNO_DEMANGLE
      endif
    endif
  endif

  ifneq ($(filter -liberty,$(EXTLIBS)),)
    CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
  endif
endif

ifneq ($(filter -lbfd,$(EXTLIBS)),)
  CFLAGS += -DHAVE_LIBBFD_SUPPORT
endif

ifndef NO_ZLIB
  ifeq ($(feature-zlib), 1)
    CFLAGS += -DHAVE_ZLIB_SUPPORT
    EXTLIBS += -lz
    $(call detected,CONFIG_ZLIB)
  else
    NO_ZLIB := 1
  endif
endif

ifndef NO_LZMA
  ifeq ($(feature-lzma), 1)
    CFLAGS += -DHAVE_LZMA_SUPPORT
    EXTLIBS += -llzma
    $(call detected,CONFIG_LZMA)
  else
    msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
    NO_LZMA := 1
  endif
endif

ifndef NO_LIBZSTD
  ifeq ($(feature-libzstd), 1)
    CFLAGS += -DHAVE_ZSTD_SUPPORT
    CFLAGS += $(LIBZSTD_CFLAGS)
    LDFLAGS += $(LIBZSTD_LDFLAGS)
    EXTLIBS += -lzstd
    $(call detected,CONFIG_ZSTD)
  else
    msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
    NO_LIBZSTD := 1
  endif
endif

ifndef NO_LIBCAP
  ifeq ($(feature-libcap), 1)
    CFLAGS += -DHAVE_LIBCAP_SUPPORT
    EXTLIBS += -lcap
    $(call detected,CONFIG_LIBCAP)
  else
    msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
    NO_LIBCAP := 1
  endif
endif

ifndef NO_BACKTRACE
  ifeq ($(feature-backtrace), 1)
    CFLAGS += -DHAVE_BACKTRACE_SUPPORT
  endif
endif

ifndef NO_LIBNUMA
  ifeq ($(feature-libnuma), 0)
    msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
    NO_LIBNUMA := 1
  else
    ifeq ($(feature-numa_num_possible_cpus), 0)
      msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
      NO_LIBNUMA := 1
    else
      CFLAGS += -DHAVE_LIBNUMA_SUPPORT
      EXTLIBS += -lnuma
      $(call detected,CONFIG_NUMA)
    endif
  endif
endif

ifdef HAVE_KVM_STAT_SUPPORT
    CFLAGS += -DHAVE_KVM_STAT_SUPPORT
endif

ifeq ($(feature-disassembler-four-args), 1)
    CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
endif

ifeq ($(feature-disassembler-init-styled), 1)
    CFLAGS += -DDISASM_INIT_STYLED
endif

ifeq (${IS_64_BIT}, 1)
  ifndef NO_PERF_READ_VDSO32
    $(call feature_check,compile-32)
    ifeq ($(feature-compile-32), 1)
      CFLAGS += -DHAVE_PERF_READ_VDSO32
    else
      NO_PERF_READ_VDSO32 := 1
    endif
  endif
  ifneq ($(SRCARCH), x86)
    NO_PERF_READ_VDSOX32 := 1
  endif
  ifndef NO_PERF_READ_VDSOX32
    $(call feature_check,compile-x32)
    ifeq ($(feature-compile-x32), 1)
      CFLAGS += -DHAVE_PERF_READ_VDSOX32
    else
      NO_PERF_READ_VDSOX32 := 1
    endif
  endif
else
  NO_PERF_READ_VDSO32 := 1
  NO_PERF_READ_VDSOX32 := 1
endif

ifndef NO_LIBBABELTRACE
  $(call feature_check,libbabeltrace)
  ifeq ($(feature-libbabeltrace), 1)
    CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
    LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
    EXTLIBS += -lbabeltrace-ctf
    $(call detected,CONFIG_LIBBABELTRACE)
  else
    msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
  endif
endif

ifndef NO_AUXTRACE
  ifeq ($(SRCARCH),x86)
    ifeq ($(feature-get_cpuid), 0)
      msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
      NO_AUXTRACE := 1
    endif
  endif
  ifndef NO_AUXTRACE
    $(call detected,CONFIG_AUXTRACE)
    CFLAGS += -DHAVE_AUXTRACE_SUPPORT
    ifeq ($(feature-reallocarray), 0)
      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
    endif
  endif
endif

ifndef NO_JVMTI
  ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
    JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
  else
    ifneq (,$(wildcard /usr/sbin/alternatives))
      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
    endif
  endif
  ifndef JDIR
    $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
    NO_JVMTI := 1
  endif
endif

ifndef NO_JVMTI
  FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
  $(call feature_check,jvmti)
  ifeq ($(feature-jvmti), 1)
    $(call detected_var,JDIR)
    ifndef NO_JVMTI_CMLR
      FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
      $(call feature_check,jvmti-cmlr)
      ifeq ($(feature-jvmti-cmlr), 1)
        CFLAGS += -DHAVE_JVMTI_CMLR
      endif
    endif # NO_JVMTI_CMLR
  else
    $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
    NO_JVMTI := 1
  endif
endif

USE_CXX = 0
USE_CLANGLLVM = 0
ifdef LIBCLANGLLVM
  $(call feature_check,cxx)
  ifneq ($(feature-cxx), 1)
    msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
  else
    $(call feature_check,llvm)
    $(call feature_check,llvm-version)
    ifneq ($(feature-llvm), 1)
      msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
    else
      $(call feature_check,clang)
      ifneq ($(feature-clang), 1)
        msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
      else
        CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
        CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
        $(call detected,CONFIG_CXX)
        $(call detected,CONFIG_CLANGLLVM)
	USE_CXX = 1
	USE_LLVM = 1
	USE_CLANG = 1
        ifneq ($(feature-llvm-version),1)
          msg := $(warning This version of LLVM is not tested. May cause build errors)
        endif
      endif
    endif
  endif
endif

ifdef LIBPFM4
  $(call feature_check,libpfm4)
  ifeq ($(feature-libpfm4), 1)
    CFLAGS += -DHAVE_LIBPFM
    EXTLIBS += -lpfm
    ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
    $(call detected,CONFIG_LIBPFM4)
  else
    msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
    NO_LIBPFM4 := 1
  endif
endif

# libtraceevent is a recommended dependency picked up from the system.
ifneq ($(NO_LIBTRACEEVENT),1)
  $(call feature_check,libtraceevent)
  ifeq ($(feature-libtraceevent), 1)
    CFLAGS += -DHAVE_LIBTRACEEVENT
    EXTLIBS += -ltraceevent
    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
    LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
    LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
    LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
    LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
    CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
    $(call detected,CONFIG_LIBTRACEEVENT)
    LIBTRACEEVENT_VERSION_WITH_TEP_FIELD_IS_RELATIVE := $(shell expr 1 \* 255 \* 255 + 5 \* 255 + 0) # 1.5.0
    ifeq ($(shell test $(LIBTRACEEVENT_VERSION_CPP) -gt $(LIBTRACEEVENT_VERSION_WITH_TEP_FIELD_IS_RELATIVE); echo $$?),0)
      CFLAGS += -DHAVE_LIBTRACEEVENT_TEP_FIELD_IS_RELATIVE
    endif
  else
    dummy := $(warning Warning: libtraceevent is missing limiting functionality, please install libtraceevent-dev/libtraceevent-devel)
  endif

  $(call feature_check,libtracefs)
  ifeq ($(feature-libtracefs), 1)
    EXTLIBS += -ltracefs
    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
    LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
    LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
    LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
    LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
    CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
  endif
endif

# Among the variables below, these:
#   perfexecdir
#   libbpf_include_dir
#   perf_examples_dir
#   template_dir
#   mandir
#   infodir
#   htmldir
#   ETC_PERFCONFIG (but not sysconfdir)
# can be specified as a relative path some/where/else;
# this is interpreted as relative to $(prefix) and "perf" at
# runtime figures out where they are based on the path to the executable.
# This can help installing the suite in a relocatable way.

# Make the path relative to DESTDIR, not to prefix
ifndef DESTDIR
prefix ?= $(HOME)
endif
bindir_relative = bin
bindir = $(abspath $(prefix)/$(bindir_relative))
includedir_relative = include
includedir = $(abspath $(prefix)/$(includedir_relative))
mandir = share/man
infodir = share/info
perfexecdir = libexec/perf-core
# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
libbpf_include_dir = /usr/include
perf_examples_dir = lib/perf/examples
sharedir = $(prefix)/share
template_dir = share/perf-core/templates
STRACE_GROUPS_DIR = share/perf-core/strace/groups
htmldir = share/doc/perf-doc
tipdir = share/doc/perf-tip
srcdir = $(srctree)/tools/perf
ifeq ($(prefix),/usr)
sysconfdir = /etc
ETC_PERFCONFIG = $(sysconfdir)/perfconfig
else
sysconfdir = $(prefix)/etc
ETC_PERFCONFIG = etc/perfconfig
endif
ifndef lib
ifeq ($(SRCARCH)$(IS_64_BIT), x861)
lib = lib64
else
lib = lib
endif
endif # lib
libdir = $(prefix)/$(lib)

# Shell quote (do not use $(call) to accommodate ancient setups);
ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
bindir_SQ = $(subst ','\'',$(bindir))
includedir_SQ = $(subst ','\'',$(includedir))
mandir_SQ = $(subst ','\'',$(mandir))
infodir_SQ = $(subst ','\'',$(infodir))
perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
template_dir_SQ = $(subst ','\'',$(template_dir))
htmldir_SQ = $(subst ','\'',$(htmldir))
tipdir_SQ = $(subst ','\'',$(tipdir))
prefix_SQ = $(subst ','\'',$(prefix))
sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
libdir_SQ = $(subst ','\'',$(libdir))
srcdir_SQ = $(subst ','\'',$(srcdir))

ifneq ($(filter /%,$(firstword $(perfexecdir))),)
perfexec_instdir = $(perfexecdir)
perf_include_instdir = $(libbpf_include_dir)
perf_examples_instdir = $(perf_examples_dir)
STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
tip_instdir = $(tipdir)
else
perfexec_instdir = $(prefix)/$(perfexecdir)
perf_include_instdir = $(prefix)/$(libbpf_include_dir)
perf_examples_instdir = $(prefix)/$(perf_examples_dir)
STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
tip_instdir = $(prefix)/$(tipdir)
endif
perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
tip_instdir_SQ = $(subst ','\'',$(tip_instdir))

export perfexec_instdir_SQ

# If we install to $(HOME) we keep the traceevent default:
# $(HOME)/.traceevent/plugins
# Otherwise we install plugins into the global $(libdir).
ifdef DESTDIR
plugindir=$(libdir)/traceevent/plugins
plugindir_SQ= $(subst ','\'',$(plugindir))
endif

print_var = $(eval $(print_var_code)) $(info $(MSG))
define print_var_code
    MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
endef

ifeq ($(feature_display),1)
  $(call feature_display_entries)
endif

ifeq ($(VF),1)
  # Display EXTRA features which are detected manualy
  # from here with feature_check call and thus cannot
  # be partof global state output.
  $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
  $(call print_var,prefix)
  $(call print_var,bindir)
  $(call print_var,libdir)
  $(call print_var,sysconfdir)
  $(call print_var,LIBUNWIND_DIR)
  $(call print_var,LIBDW_DIR)
  $(call print_var,JDIR)

  ifeq ($(dwarf-post-unwind),1)
    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
  endif
endif

$(info )

$(call detected_var,bindir_SQ)
$(call detected_var,PYTHON_WORD)
ifneq ($(OUTPUT),)
$(call detected_var,OUTPUT)
endif
$(call detected_var,htmldir_SQ)
$(call detected_var,infodir_SQ)
$(call detected_var,mandir_SQ)
$(call detected_var,ETC_PERFCONFIG_SQ)
$(call detected_var,STRACE_GROUPS_DIR_SQ)
$(call detected_var,prefix_SQ)
$(call detected_var,perfexecdir_SQ)
$(call detected_var,libbpf_include_dir_SQ)
$(call detected_var,perf_examples_dir_SQ)
$(call detected_var,tipdir_SQ)
$(call detected_var,srcdir_SQ)
$(call detected_var,LIBDIR)
$(call detected_var,GTK_CFLAGS)
$(call detected_var,PERL_EMBED_CCOPTS)
$(call detected_var,PYTHON_EMBED_CCOPTS)
ifneq ($(BISON_FILE_PREFIX_MAP),)
$(call detected_var,BISON_FILE_PREFIX_MAP)
endif

# re-generate FEATURE-DUMP as we may have called feature_check, found out
# extra libraries to add to LDFLAGS of some other test and then redo those
# tests.
$(shell rm -f $(FEATURE_DUMP_FILENAME))
$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))