Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0-only
2
3ifeq ($(src-perf),)
4src-perf := $(srctree)/tools/perf
5endif
6
7ifeq ($(obj-perf),)
8obj-perf := $(OUTPUT)
9endif
10
11ifneq ($(obj-perf),)
12obj-perf := $(abspath $(obj-perf))/
13endif
14
15$(shell printf "" > $(OUTPUT).config-detected)
16detected = $(shell echo "$(1)=y" >> $(OUTPUT).config-detected)
17detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
18
19CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
20HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
21
22# Enabled Wthread-safety analysis for clang builds.
23ifeq ($(CC_NO_CLANG), 0)
24 CFLAGS += -Wthread-safety
25endif
26
27include $(srctree)/tools/scripts/Makefile.arch
28
29$(call detected_var,SRCARCH)
30
31NO_PERF_REGS := 1
32
33ifneq ($(NO_SYSCALL_TABLE),1)
34 NO_SYSCALL_TABLE := 1
35
36 ifeq ($(SRCARCH),x86)
37 ifeq (${IS_64_BIT}, 1)
38 NO_SYSCALL_TABLE := 0
39 endif
40 else
41 ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips loongarch))
42 NO_SYSCALL_TABLE := 0
43 endif
44 endif
45
46 ifneq ($(NO_SYSCALL_TABLE),1)
47 CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
48 endif
49endif
50
51# Additional ARCH settings for ppc
52ifeq ($(SRCARCH),powerpc)
53 NO_PERF_REGS := 0
54 CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
55 LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
56endif
57
58# Additional ARCH settings for x86
59ifeq ($(SRCARCH),x86)
60 $(call detected,CONFIG_X86)
61 ifeq (${IS_64_BIT}, 1)
62 CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
63 ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
64 LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
65 $(call detected,CONFIG_X86_64)
66 else
67 LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
68 endif
69 NO_PERF_REGS := 0
70endif
71
72ifeq ($(SRCARCH),arm)
73 NO_PERF_REGS := 0
74 LIBUNWIND_LIBS = -lunwind -lunwind-arm
75endif
76
77ifeq ($(SRCARCH),arm64)
78 NO_PERF_REGS := 0
79 CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
80 LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
81endif
82
83ifeq ($(SRCARCH),loongarch)
84 NO_PERF_REGS := 0
85 CFLAGS += -I$(OUTPUT)arch/loongarch/include/generated
86 LIBUNWIND_LIBS = -lunwind -lunwind-loongarch64
87endif
88
89ifeq ($(SRCARCH),riscv)
90 NO_PERF_REGS := 0
91endif
92
93ifeq ($(SRCARCH),csky)
94 NO_PERF_REGS := 0
95endif
96
97ifeq ($(ARCH),s390)
98 NO_PERF_REGS := 0
99 CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
100endif
101
102ifeq ($(ARCH),mips)
103 NO_PERF_REGS := 0
104 CFLAGS += -I$(OUTPUT)arch/mips/include/generated
105 LIBUNWIND_LIBS = -lunwind -lunwind-mips
106endif
107
108ifeq ($(NO_PERF_REGS),0)
109 $(call detected,CONFIG_PERF_REGS)
110endif
111
112# So far there's only x86 and arm libdw unwind support merged in perf.
113# Disable it on all other architectures in case libdw unwind
114# support is detected in system. Add supported architectures
115# to the check.
116ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv loongarch))
117 NO_LIBDW_DWARF_UNWIND := 1
118endif
119
120ifeq ($(LIBUNWIND_LIBS),)
121 NO_LIBUNWIND := 1
122endif
123#
124# For linking with debug library, run like:
125#
126# make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
127#
128
129libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
130define libunwind_arch_set_flags_code
131 FEATURE_CHECK_CFLAGS-libunwind-$(1) = -I$(LIBUNWIND_DIR)/include
132 FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
133endef
134
135ifdef LIBUNWIND_DIR
136 LIBUNWIND_CFLAGS = -I$(LIBUNWIND_DIR)/include
137 LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
138 LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64 loongarch
139 $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
140endif
141
142# Set per-feature check compilation flags
143FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
144FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
145FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
146FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
147
148FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
149FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
150FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
151FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
152
153FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
154
155ifdef CSINCLUDES
156 LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
157endif
158OPENCSDLIBS := -lopencsd_c_api
159ifeq ($(findstring -static,${LDFLAGS}),-static)
160 OPENCSDLIBS += -lopencsd -lstdc++
161endif
162ifdef CSLIBS
163 LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
164endif
165FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
166FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
167
168ifeq ($(NO_PERF_REGS),0)
169 CFLAGS += -DHAVE_PERF_REGS_SUPPORT
170endif
171
172# for linking with debug library, run like:
173# make DEBUG=1 LIBDW_DIR=/opt/libdw/
174ifdef LIBDW_DIR
175 LIBDW_CFLAGS := -I$(LIBDW_DIR)/include
176 LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
177endif
178DWARFLIBS := -ldw
179ifeq ($(findstring -static,${LDFLAGS}),-static)
180 DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
181endif
182FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
183FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
184
185# for linking with debug library, run like:
186# make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
187ifdef LIBBABELTRACE_DIR
188 LIBBABELTRACE_CFLAGS := -I$(LIBBABELTRACE_DIR)/include
189 LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
190endif
191FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
192FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
193
194ifdef LIBZSTD_DIR
195 LIBZSTD_CFLAGS := -I$(LIBZSTD_DIR)/lib
196 LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
197endif
198FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
199FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
200
201FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
202# include ARCH specific config
203-include $(src-perf)/arch/$(SRCARCH)/Makefile
204
205ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
206 CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
207endif
208
209include $(srctree)/tools/scripts/utilities.mak
210
211ifeq ($(call get-executable,$(FLEX)),)
212 dummy := $(error Error: $(FLEX) is missing on this system, please install it)
213endif
214
215ifeq ($(call get-executable,$(BISON)),)
216 dummy := $(error Error: $(BISON) is missing on this system, please install it)
217endif
218
219ifneq ($(OUTPUT),)
220 ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
221 BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
222 endif
223endif
224
225# Treat warnings as errors unless directed not to
226ifneq ($(WERROR),0)
227 CORE_CFLAGS += -Werror
228 CXXFLAGS += -Werror
229 HOSTCFLAGS += -Werror
230endif
231
232ifndef DEBUG
233 DEBUG := 0
234endif
235
236ifeq ($(DEBUG),0)
237CORE_CFLAGS += -DNDEBUG=1
238ifeq ($(CC_NO_CLANG), 0)
239 CORE_CFLAGS += -O3
240else
241 CORE_CFLAGS += -O6
242endif
243endif
244
245ifdef PARSER_DEBUG
246 PARSER_DEBUG_BISON := -t
247 PARSER_DEBUG_FLEX := -d
248 CFLAGS += -DPARSER_DEBUG
249 $(call detected_var,PARSER_DEBUG_BISON)
250 $(call detected_var,PARSER_DEBUG_FLEX)
251endif
252
253# Try different combinations to accommodate systems that only have
254# python[2][3]-config in weird combinations in the following order of
255# priority from lowest to highest:
256# * python2-config as per pep-0394.
257# * python-config
258# * python3-config
259# * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
260#
261PYTHON_AUTO := python-config
262PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
263PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
264PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
265
266# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
267# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
268ifdef PYTHON
269 ifndef PYTHON_CONFIG
270 PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
271 PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
272 $(call $(error $(PYTHON)-config not found)))
273 endif
274endif
275
276# Select either auto detected python and python-config or use user supplied values if they are
277# defined. get-executable-or-default fails with an error if the first argument is supplied but
278# doesn't exist.
279override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
280override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
281
282grep-libs = $(filter -l%,$(1))
283strip-libs = $(filter-out -l%,$(1))
284
285PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
286
287# Python 3.8 changed the output of `python-config --ldflags` to not include the
288# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
289# libpython fails if that flag is not included in LDFLAGS
290ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
291 PYTHON_CONFIG_LDFLAGS := --ldflags --embed
292else
293 PYTHON_CONFIG_LDFLAGS := --ldflags
294endif
295
296ifdef PYTHON_CONFIG
297 PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
298 PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
299 PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
300 PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
301 FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
302 ifeq ($(CC_NO_CLANG), 0)
303 PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
304 endif
305endif
306
307FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
308FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
309
310FEATURE_CHECK_LDFLAGS-libaio = -lrt
311
312CORE_CFLAGS += -fno-omit-frame-pointer
313CORE_CFLAGS += -ggdb3
314CORE_CFLAGS += -funwind-tables
315CORE_CFLAGS += -Wall
316CORE_CFLAGS += -Wextra
317CORE_CFLAGS += -std=gnu11
318
319CXXFLAGS += -std=gnu++14 -fno-exceptions -fno-rtti
320CXXFLAGS += -Wall
321CXXFLAGS += -fno-omit-frame-pointer
322CXXFLAGS += -ggdb3
323CXXFLAGS += -funwind-tables
324CXXFLAGS += -Wno-strict-aliasing
325
326HOSTCFLAGS += -Wall
327HOSTCFLAGS += -Wextra
328
329# Enforce a non-executable stack, as we may regress (again) in the future by
330# adding assembler files missing the .GNU-stack linker note.
331LDFLAGS += -Wl,-z,noexecstack
332
333EXTLIBS = -lpthread -lrt -lm -ldl
334
335ifneq ($(TCMALLOC),)
336 CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
337 EXTLIBS += -ltcmalloc
338endif
339
340ifeq ($(FEATURES_DUMP),)
341# We will display at the end of this Makefile.config, using $(call feature_display_entries),
342# as we may retry some feature detection here.
343 FEATURE_DISPLAY_DEFERRED := 1
344include $(srctree)/tools/build/Makefile.feature
345else
346include $(FEATURES_DUMP)
347endif
348
349ifeq ($(feature-stackprotector-all), 1)
350 CORE_CFLAGS += -fstack-protector-all
351endif
352
353ifeq ($(DEBUG),0)
354 ifeq ($(feature-fortify-source), 1)
355 CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
356 endif
357endif
358
359INC_FLAGS += -I$(src-perf)/util/include
360INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
361INC_FLAGS += -I$(srctree)/tools/include/
362INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
363INC_FLAGS += -I$(srctree)/tools/include/uapi
364INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
365INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
366
367# $(obj-perf) for generated common-cmds.h
368# $(obj-perf)/util for generated bison/flex headers
369ifneq ($(OUTPUT),)
370INC_FLAGS += -I$(obj-perf)/util
371INC_FLAGS += -I$(obj-perf)
372endif
373
374INC_FLAGS += -I$(src-perf)/util
375INC_FLAGS += -I$(src-perf)
376
377CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
378
379CFLAGS += $(CORE_CFLAGS) $(INC_FLAGS)
380CXXFLAGS += $(INC_FLAGS)
381
382LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
383
384ifeq ($(feature-pthread-attr-setaffinity-np), 1)
385 CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
386endif
387
388ifeq ($(feature-pthread-barrier), 1)
389 CFLAGS += -DHAVE_PTHREAD_BARRIER
390endif
391
392ifndef NO_BIONIC
393 $(call feature_check,bionic)
394 ifeq ($(feature-bionic), 1)
395 BIONIC := 1
396 CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
397 CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
398 EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
399 EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
400 endif
401endif
402
403ifeq ($(feature-eventfd), 1)
404 CFLAGS += -DHAVE_EVENTFD_SUPPORT
405endif
406
407ifeq ($(feature-get_current_dir_name), 1)
408 CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
409endif
410
411ifeq ($(feature-gettid), 1)
412 CFLAGS += -DHAVE_GETTID
413endif
414
415ifeq ($(feature-file-handle), 1)
416 CFLAGS += -DHAVE_FILE_HANDLE
417endif
418
419ifdef NO_LIBELF
420 NO_DWARF := 1
421 NO_LIBUNWIND := 1
422 NO_LIBDW_DWARF_UNWIND := 1
423 NO_LIBBPF := 1
424 NO_JVMTI := 1
425else
426 ifeq ($(feature-libelf), 0)
427 ifeq ($(feature-glibc), 1)
428 LIBC_SUPPORT := 1
429 endif
430 ifeq ($(BIONIC),1)
431 LIBC_SUPPORT := 1
432 endif
433 ifeq ($(LIBC_SUPPORT),1)
434 msg := $(error ERROR: No libelf found. Disables 'probe' tool, jvmti and BPF support. Please install libelf-dev, libelf-devel, elfutils-libelf-devel or build with NO_LIBELF=1.)
435 else
436 ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
437 ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
438 msg := $(error No libasan found, please install libasan);
439 endif
440 endif
441
442 ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
443 ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
444 msg := $(error No libubsan found, please install libubsan);
445 endif
446 endif
447
448 ifneq ($(filter s% -static%,$(LDFLAGS),),)
449 msg := $(error No static glibc found, please install glibc-static);
450 else
451 msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
452 endif
453 endif
454 else
455 ifndef NO_LIBDW_DWARF_UNWIND
456 ifneq ($(feature-libdw-dwarf-unwind),1)
457 NO_LIBDW_DWARF_UNWIND := 1
458 msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
459 endif
460 endif
461 ifneq ($(feature-dwarf), 1)
462 ifndef NO_DWARF
463 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);
464 NO_DWARF := 1
465 endif
466 else
467 ifneq ($(feature-dwarf_getlocations), 1)
468 msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
469 else
470 CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
471 endif # dwarf_getlocations
472 endif # Dwarf support
473 endif # libelf support
474endif # NO_LIBELF
475
476ifeq ($(feature-libaio), 1)
477 ifndef NO_AIO
478 CFLAGS += -DHAVE_AIO_SUPPORT
479 endif
480endif
481
482ifdef NO_DWARF
483 NO_LIBDW_DWARF_UNWIND := 1
484endif
485
486ifeq ($(feature-scandirat), 1)
487 CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
488endif
489
490ifeq ($(feature-sched_getcpu), 1)
491 CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
492endif
493
494ifeq ($(feature-setns), 1)
495 CFLAGS += -DHAVE_SETNS_SUPPORT
496 $(call detected,CONFIG_SETNS)
497endif
498
499ifdef CORESIGHT
500 $(call feature_check,libopencsd)
501 ifeq ($(feature-libopencsd), 1)
502 CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
503 ifeq ($(feature-reallocarray), 0)
504 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
505 endif
506 LDFLAGS += $(LIBOPENCSD_LDFLAGS)
507 EXTLIBS += $(OPENCSDLIBS)
508 $(call detected,CONFIG_LIBOPENCSD)
509 ifdef CSTRACE_RAW
510 CFLAGS += -DCS_DEBUG_RAW
511 ifeq (${CSTRACE_RAW}, packed)
512 CFLAGS += -DCS_RAW_PACKED
513 endif
514 endif
515 else
516 dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
517 endif
518endif
519
520ifndef NO_LIBELF
521 CFLAGS += -DHAVE_LIBELF_SUPPORT
522 EXTLIBS += -lelf
523 $(call detected,CONFIG_LIBELF)
524
525 ifeq ($(feature-libelf-getphdrnum), 1)
526 CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
527 endif
528
529 ifeq ($(feature-libelf-gelf_getnote), 1)
530 CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
531 else
532 msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
533 endif
534
535 ifeq ($(feature-libelf-getshdrstrndx), 1)
536 CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
537 endif
538
539 ifndef NO_LIBDEBUGINFOD
540 $(call feature_check,libdebuginfod)
541 ifeq ($(feature-libdebuginfod), 1)
542 CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
543 EXTLIBS += -ldebuginfod
544 endif
545 endif
546
547 ifndef NO_DWARF
548 ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
549 msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
550 NO_DWARF := 1
551 else
552 CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
553 LDFLAGS += $(LIBDW_LDFLAGS)
554 EXTLIBS += ${DWARFLIBS}
555 $(call detected,CONFIG_DWARF)
556 endif # PERF_HAVE_DWARF_REGS
557 endif # NO_DWARF
558
559 ifndef NO_LIBBPF
560 ifeq ($(feature-bpf), 1)
561 CFLAGS += -DHAVE_LIBBPF_SUPPORT
562 $(call detected,CONFIG_LIBBPF)
563
564 # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
565 $(call feature_check,libbpf)
566
567 ifdef LIBBPF_DYNAMIC
568 ifeq ($(feature-libbpf), 1)
569 EXTLIBS += -lbpf
570 $(call detected,CONFIG_LIBBPF_DYNAMIC)
571 else
572 dummy := $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel);
573 endif
574 else
575 # Libbpf will be built as a static library from tools/lib/bpf.
576 LIBBPF_STATIC := 1
577 endif
578 endif
579
580 ifndef NO_DWARF
581 ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
582 CFLAGS += -DHAVE_BPF_PROLOGUE
583 $(call detected,CONFIG_BPF_PROLOGUE)
584 else
585 msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
586 endif
587 else
588 msg := $(warning DWARF support is off, BPF prologue is disabled);
589 endif
590
591 endif # NO_LIBBPF
592endif # NO_LIBELF
593
594ifndef NO_SDT
595 ifneq ($(feature-sdt), 1)
596 msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
597 NO_SDT := 1;
598 else
599 CFLAGS += -DHAVE_SDT_EVENT
600 $(call detected,CONFIG_SDT_EVENT)
601 endif
602endif
603
604ifdef PERF_HAVE_JITDUMP
605 ifndef NO_LIBELF
606 $(call detected,CONFIG_JITDUMP)
607 CFLAGS += -DHAVE_JITDUMP
608 endif
609endif
610
611ifeq ($(SRCARCH),powerpc)
612 ifndef NO_DWARF
613 CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
614 endif
615endif
616
617ifndef NO_LIBUNWIND
618 have_libunwind :=
619
620 $(call feature_check,libunwind-x86)
621 ifeq ($(feature-libunwind-x86), 1)
622 $(call detected,CONFIG_LIBUNWIND_X86)
623 CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
624 LDFLAGS += -lunwind-x86
625 EXTLIBS_LIBUNWIND += -lunwind-x86
626 have_libunwind = 1
627 endif
628
629 $(call feature_check,libunwind-aarch64)
630 ifeq ($(feature-libunwind-aarch64), 1)
631 $(call detected,CONFIG_LIBUNWIND_AARCH64)
632 CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
633 LDFLAGS += -lunwind-aarch64
634 EXTLIBS_LIBUNWIND += -lunwind-aarch64
635 have_libunwind = 1
636 $(call feature_check,libunwind-debug-frame-aarch64)
637 ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
638 msg := $(warning No debug_frame support found in libunwind-aarch64);
639 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
640 endif
641 endif
642
643 ifneq ($(feature-libunwind), 1)
644 msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
645 NO_LOCAL_LIBUNWIND := 1
646 else
647 have_libunwind := 1
648 $(call detected,CONFIG_LOCAL_LIBUNWIND)
649 endif
650
651 ifneq ($(have_libunwind), 1)
652 NO_LIBUNWIND := 1
653 endif
654else
655 NO_LOCAL_LIBUNWIND := 1
656endif
657
658ifndef NO_LIBBPF
659 ifneq ($(feature-bpf), 1)
660 msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
661 NO_LIBBPF := 1
662 endif
663endif
664
665ifdef BUILD_BPF_SKEL
666 $(call feature_check,clang-bpf-co-re)
667 ifeq ($(feature-clang-bpf-co-re), 0)
668 dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
669 endif
670 ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
671 dummy := $(error Error: BPF skeleton support requires libbpf)
672 endif
673 $(call detected,CONFIG_PERF_BPF_SKEL)
674 CFLAGS += -DHAVE_BPF_SKEL
675endif
676
677dwarf-post-unwind := 1
678dwarf-post-unwind-text := BUG
679
680# setup DWARF post unwinder
681ifdef NO_LIBUNWIND
682 ifdef NO_LIBDW_DWARF_UNWIND
683 msg := $(warning Disabling post unwind, no support found.);
684 dwarf-post-unwind := 0
685 else
686 dwarf-post-unwind-text := libdw
687 $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
688 endif
689else
690 dwarf-post-unwind-text := libunwind
691 $(call detected,CONFIG_LIBUNWIND)
692 # Enable libunwind support by default.
693 ifndef NO_LIBDW_DWARF_UNWIND
694 NO_LIBDW_DWARF_UNWIND := 1
695 endif
696endif
697
698ifeq ($(dwarf-post-unwind),1)
699 CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
700 $(call detected,CONFIG_DWARF_UNWIND)
701else
702 NO_DWARF_UNWIND := 1
703endif
704
705ifndef NO_LOCAL_LIBUNWIND
706 ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
707 $(call feature_check,libunwind-debug-frame)
708 ifneq ($(feature-libunwind-debug-frame), 1)
709 msg := $(warning No debug_frame support found in libunwind);
710 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
711 endif
712 else
713 # non-ARM has no dwarf_find_debug_frame() function:
714 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
715 endif
716 EXTLIBS += $(LIBUNWIND_LIBS)
717 LDFLAGS += $(LIBUNWIND_LIBS)
718endif
719ifeq ($(findstring -static,${LDFLAGS}),-static)
720 # gcc -static links libgcc_eh which contans piece of libunwind
721 LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
722endif
723
724ifndef NO_LIBUNWIND
725 CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
726 CFLAGS += $(LIBUNWIND_CFLAGS)
727 LDFLAGS += $(LIBUNWIND_LDFLAGS)
728 EXTLIBS += $(EXTLIBS_LIBUNWIND)
729endif
730
731ifneq ($(NO_LIBTRACEEVENT),1)
732 ifeq ($(NO_SYSCALL_TABLE),0)
733 $(call detected,CONFIG_TRACE)
734 else
735 ifndef NO_LIBAUDIT
736 $(call feature_check,libaudit)
737 ifneq ($(feature-libaudit), 1)
738 msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
739 NO_LIBAUDIT := 1
740 else
741 CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
742 EXTLIBS += -laudit
743 $(call detected,CONFIG_TRACE)
744 endif
745 endif
746 endif
747endif
748
749ifndef NO_LIBCRYPTO
750 ifneq ($(feature-libcrypto), 1)
751 msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
752 NO_LIBCRYPTO := 1
753 else
754 CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
755 EXTLIBS += -lcrypto
756 $(call detected,CONFIG_CRYPTO)
757 endif
758endif
759
760ifndef NO_SLANG
761 ifneq ($(feature-libslang), 1)
762 ifneq ($(feature-libslang-include-subdir), 1)
763 msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
764 NO_SLANG := 1
765 else
766 CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
767 endif
768 endif
769 ifndef NO_SLANG
770 # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
771 CFLAGS += -DHAVE_SLANG_SUPPORT
772 EXTLIBS += -lslang
773 $(call detected,CONFIG_SLANG)
774 endif
775endif
776
777ifdef GTK2
778 FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
779 $(call feature_check,gtk2)
780 ifneq ($(feature-gtk2), 1)
781 msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
782 NO_GTK2 := 1
783 else
784 $(call feature_check,gtk2-infobar)
785 ifeq ($(feature-gtk2-infobar), 1)
786 GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
787 endif
788 CFLAGS += -DHAVE_GTK2_SUPPORT
789 GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
790 GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
791 EXTLIBS += -ldl
792 endif
793endif
794
795ifdef NO_LIBPERL
796 CFLAGS += -DNO_LIBPERL
797else
798 PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
799 PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
800 PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
801 PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
802 PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
803 PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
804 PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
805 FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
806
807 ifneq ($(feature-libperl), 1)
808 CFLAGS += -DNO_LIBPERL
809 NO_LIBPERL := 1
810 msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
811 else
812 LDFLAGS += $(PERL_EMBED_LDFLAGS)
813 EXTLIBS += $(PERL_EMBED_LIBADD)
814 CFLAGS += -DHAVE_LIBPERL_SUPPORT
815 ifeq ($(CC_NO_CLANG), 0)
816 CFLAGS += -Wno-compound-token-split-by-macro
817 endif
818 $(call detected,CONFIG_LIBPERL)
819 endif
820endif
821
822ifeq ($(feature-timerfd), 1)
823 CFLAGS += -DHAVE_TIMERFD_SUPPORT
824else
825 msg := $(warning No timerfd support. Disables 'perf kvm stat live');
826endif
827
828disable-python = $(eval $(disable-python_code))
829define disable-python_code
830 CFLAGS += -DNO_LIBPYTHON
831 $(warning $1)
832 NO_LIBPYTHON := 1
833endef
834
835PYTHON_EXTENSION_SUFFIX := '.so'
836ifdef NO_LIBPYTHON
837 $(call disable-python,Python support disabled by user)
838else
839
840 ifndef PYTHON
841 $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
842 else
843 PYTHON_WORD := $(call shell-wordify,$(PYTHON))
844
845 ifndef PYTHON_CONFIG
846 $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
847 else
848
849 ifneq ($(feature-libpython), 1)
850 $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
851 else
852 LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
853 EXTLIBS += $(PYTHON_EMBED_LIBADD)
854 PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
855 ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
856 PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
857 LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
858 else
859 msg := $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent);
860 endif
861 CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
862 $(call detected,CONFIG_LIBPYTHON)
863 endif
864 endif
865 endif
866endif
867
868ifneq ($(NO_JEVENTS),1)
869 ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
870 NO_JEVENTS := 1
871 endif
872endif
873ifneq ($(NO_JEVENTS),1)
874 NO_JEVENTS := 0
875 ifndef PYTHON
876 $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
877 else
878 # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
879 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)
880 ifneq ($(JEVENTS_PYTHON_GOOD), 1)
881 $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
882 endif
883 endif
884endif
885
886ifdef BUILD_NONDISTRO
887 ifeq ($(feature-libbfd), 1)
888 EXTLIBS += -lbfd -lopcodes
889 else
890 # we are on a system that requires -liberty and (maybe) -lz
891 # to link against -lbfd; test each case individually here
892
893 # call all detections now so we get correct
894 # status in VF output
895 $(call feature_check,libbfd-liberty)
896 $(call feature_check,libbfd-liberty-z)
897
898 ifeq ($(feature-libbfd-liberty), 1)
899 EXTLIBS += -lbfd -lopcodes -liberty
900 else
901 ifeq ($(feature-libbfd-liberty-z), 1)
902 EXTLIBS += -lbfd -lopcodes -liberty -lz
903 endif
904 endif
905 $(call feature_check,disassembler-four-args)
906 $(call feature_check,disassembler-init-styled)
907 endif
908
909 CFLAGS += -DHAVE_LIBBFD_SUPPORT
910 CXXFLAGS += -DHAVE_LIBBFD_SUPPORT
911 ifeq ($(feature-libbfd-buildid), 1)
912 CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
913 else
914 msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
915 endif
916endif
917
918ifndef NO_DEMANGLE
919 $(call feature_check,cxa-demangle)
920 ifeq ($(feature-cxa-demangle), 1)
921 EXTLIBS += -lstdc++
922 CFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
923 CXXFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
924 endif
925 ifdef BUILD_NONDISTRO
926 ifeq ($(filter -liberty,$(EXTLIBS)),)
927 $(call feature_check,cplus-demangle)
928 ifeq ($(feature-cplus-demangle), 1)
929 EXTLIBS += -liberty
930 endif
931 endif
932 ifneq ($(filter -liberty,$(EXTLIBS)),)
933 CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
934 CXXFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
935 endif
936 endif
937endif
938
939ifndef NO_ZLIB
940 ifeq ($(feature-zlib), 1)
941 CFLAGS += -DHAVE_ZLIB_SUPPORT
942 EXTLIBS += -lz
943 $(call detected,CONFIG_ZLIB)
944 else
945 NO_ZLIB := 1
946 endif
947endif
948
949ifndef NO_LZMA
950 ifeq ($(feature-lzma), 1)
951 CFLAGS += -DHAVE_LZMA_SUPPORT
952 EXTLIBS += -llzma
953 $(call detected,CONFIG_LZMA)
954 else
955 msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
956 NO_LZMA := 1
957 endif
958endif
959
960ifndef NO_LIBZSTD
961 ifeq ($(feature-libzstd), 1)
962 CFLAGS += -DHAVE_ZSTD_SUPPORT
963 CFLAGS += $(LIBZSTD_CFLAGS)
964 LDFLAGS += $(LIBZSTD_LDFLAGS)
965 EXTLIBS += -lzstd
966 $(call detected,CONFIG_ZSTD)
967 else
968 msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
969 NO_LIBZSTD := 1
970 endif
971endif
972
973ifndef NO_LIBCAP
974 ifeq ($(feature-libcap), 1)
975 CFLAGS += -DHAVE_LIBCAP_SUPPORT
976 EXTLIBS += -lcap
977 $(call detected,CONFIG_LIBCAP)
978 else
979 msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
980 NO_LIBCAP := 1
981 endif
982endif
983
984ifndef NO_BACKTRACE
985 ifeq ($(feature-backtrace), 1)
986 CFLAGS += -DHAVE_BACKTRACE_SUPPORT
987 endif
988endif
989
990ifndef NO_LIBNUMA
991 ifeq ($(feature-libnuma), 0)
992 msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
993 NO_LIBNUMA := 1
994 else
995 ifeq ($(feature-numa_num_possible_cpus), 0)
996 msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
997 NO_LIBNUMA := 1
998 else
999 CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1000 EXTLIBS += -lnuma
1001 $(call detected,CONFIG_NUMA)
1002 endif
1003 endif
1004endif
1005
1006ifdef HAVE_KVM_STAT_SUPPORT
1007 CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1008endif
1009
1010ifeq ($(feature-disassembler-four-args), 1)
1011 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
1012endif
1013
1014ifeq ($(feature-disassembler-init-styled), 1)
1015 CFLAGS += -DDISASM_INIT_STYLED
1016endif
1017
1018ifeq (${IS_64_BIT}, 1)
1019 ifndef NO_PERF_READ_VDSO32
1020 $(call feature_check,compile-32)
1021 ifeq ($(feature-compile-32), 1)
1022 CFLAGS += -DHAVE_PERF_READ_VDSO32
1023 else
1024 NO_PERF_READ_VDSO32 := 1
1025 endif
1026 endif
1027 ifneq ($(SRCARCH), x86)
1028 NO_PERF_READ_VDSOX32 := 1
1029 endif
1030 ifndef NO_PERF_READ_VDSOX32
1031 $(call feature_check,compile-x32)
1032 ifeq ($(feature-compile-x32), 1)
1033 CFLAGS += -DHAVE_PERF_READ_VDSOX32
1034 else
1035 NO_PERF_READ_VDSOX32 := 1
1036 endif
1037 endif
1038else
1039 NO_PERF_READ_VDSO32 := 1
1040 NO_PERF_READ_VDSOX32 := 1
1041endif
1042
1043ifndef NO_LIBBABELTRACE
1044 $(call feature_check,libbabeltrace)
1045 ifeq ($(feature-libbabeltrace), 1)
1046 CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1047 LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1048 EXTLIBS += -lbabeltrace-ctf
1049 $(call detected,CONFIG_LIBBABELTRACE)
1050 else
1051 msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
1052 endif
1053endif
1054
1055ifndef NO_AUXTRACE
1056 ifeq ($(SRCARCH),x86)
1057 ifeq ($(feature-get_cpuid), 0)
1058 msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
1059 NO_AUXTRACE := 1
1060 endif
1061 endif
1062 ifndef NO_AUXTRACE
1063 $(call detected,CONFIG_AUXTRACE)
1064 CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1065 ifeq ($(feature-reallocarray), 0)
1066 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
1067 endif
1068 endif
1069endif
1070
1071ifndef NO_JVMTI
1072 ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1073 JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1074 else
1075 ifneq (,$(wildcard /usr/sbin/alternatives))
1076 JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1077 endif
1078 endif
1079 ifndef JDIR
1080 $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1081 NO_JVMTI := 1
1082 endif
1083endif
1084
1085ifndef NO_JVMTI
1086 FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1087 $(call feature_check,jvmti)
1088 ifeq ($(feature-jvmti), 1)
1089 $(call detected_var,JDIR)
1090 ifndef NO_JVMTI_CMLR
1091 FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1092 $(call feature_check,jvmti-cmlr)
1093 ifeq ($(feature-jvmti-cmlr), 1)
1094 CFLAGS += -DHAVE_JVMTI_CMLR
1095 endif
1096 endif # NO_JVMTI_CMLR
1097 else
1098 $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1099 NO_JVMTI := 1
1100 endif
1101endif
1102
1103USE_CXX = 0
1104USE_CLANGLLVM = 0
1105ifdef LIBCLANGLLVM
1106 $(call feature_check,cxx)
1107 ifneq ($(feature-cxx), 1)
1108 msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
1109 else
1110 $(call feature_check,llvm)
1111 $(call feature_check,llvm-version)
1112 ifneq ($(feature-llvm), 1)
1113 msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
1114 else
1115 $(call feature_check,clang)
1116 ifneq ($(feature-clang), 1)
1117 msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
1118 else
1119 CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
1120 CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
1121 $(call detected,CONFIG_CXX)
1122 $(call detected,CONFIG_CLANGLLVM)
1123 USE_CXX = 1
1124 USE_LLVM = 1
1125 USE_CLANG = 1
1126 ifneq ($(feature-llvm-version),1)
1127 msg := $(warning This version of LLVM is not tested. May cause build errors)
1128 endif
1129 endif
1130 endif
1131 endif
1132endif
1133
1134ifndef NO_LIBPFM4
1135 $(call feature_check,libpfm4)
1136 ifeq ($(feature-libpfm4), 1)
1137 CFLAGS += -DHAVE_LIBPFM
1138 EXTLIBS += -lpfm
1139 ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1140 $(call detected,CONFIG_LIBPFM4)
1141 else
1142 msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
1143 endif
1144endif
1145
1146# libtraceevent is a recommended dependency picked up from the system.
1147ifneq ($(NO_LIBTRACEEVENT),1)
1148 $(call feature_check,libtraceevent)
1149 ifeq ($(feature-libtraceevent), 1)
1150 CFLAGS += -DHAVE_LIBTRACEEVENT
1151 EXTLIBS += -ltraceevent
1152 LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
1153 LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1154 LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1155 LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1156 LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1157 CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1158 $(call detected,CONFIG_LIBTRACEEVENT)
1159 else
1160 dummy := $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel or build with NO_LIBTRACEEVENT=1)
1161 endif
1162
1163 $(call feature_check,libtracefs)
1164 ifeq ($(feature-libtracefs), 1)
1165 EXTLIBS += -ltracefs
1166 LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
1167 LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1168 LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1169 LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1170 LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1171 CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1172 endif
1173endif
1174
1175# Among the variables below, these:
1176# perfexecdir
1177# libbpf_include_dir
1178# perf_examples_dir
1179# template_dir
1180# mandir
1181# infodir
1182# htmldir
1183# ETC_PERFCONFIG (but not sysconfdir)
1184# can be specified as a relative path some/where/else;
1185# this is interpreted as relative to $(prefix) and "perf" at
1186# runtime figures out where they are based on the path to the executable.
1187# This can help installing the suite in a relocatable way.
1188
1189# Make the path relative to DESTDIR, not to prefix
1190ifndef DESTDIR
1191prefix ?= $(HOME)
1192endif
1193bindir_relative = bin
1194bindir = $(abspath $(prefix)/$(bindir_relative))
1195includedir_relative = include
1196includedir = $(abspath $(prefix)/$(includedir_relative))
1197mandir = share/man
1198infodir = share/info
1199perfexecdir = libexec/perf-core
1200# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
1201libbpf_include_dir = /usr/include
1202perf_examples_dir = lib/perf/examples
1203sharedir = $(prefix)/share
1204template_dir = share/perf-core/templates
1205STRACE_GROUPS_DIR = share/perf-core/strace/groups
1206htmldir = share/doc/perf-doc
1207tipdir = share/doc/perf-tip
1208srcdir = $(srctree)/tools/perf
1209ifeq ($(prefix),/usr)
1210sysconfdir = /etc
1211ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1212else
1213sysconfdir = $(prefix)/etc
1214ETC_PERFCONFIG = etc/perfconfig
1215endif
1216ifndef lib
1217ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1218lib = lib64
1219else
1220lib = lib
1221endif
1222endif # lib
1223libdir = $(prefix)/$(lib)
1224
1225# Shell quote (do not use $(call) to accommodate ancient setups);
1226ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1227STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1228DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1229bindir_SQ = $(subst ','\'',$(bindir))
1230includedir_SQ = $(subst ','\'',$(includedir))
1231mandir_SQ = $(subst ','\'',$(mandir))
1232infodir_SQ = $(subst ','\'',$(infodir))
1233perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1234libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
1235perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1236template_dir_SQ = $(subst ','\'',$(template_dir))
1237htmldir_SQ = $(subst ','\'',$(htmldir))
1238tipdir_SQ = $(subst ','\'',$(tipdir))
1239prefix_SQ = $(subst ','\'',$(prefix))
1240sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1241libdir_SQ = $(subst ','\'',$(libdir))
1242srcdir_SQ = $(subst ','\'',$(srcdir))
1243
1244ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1245perfexec_instdir = $(perfexecdir)
1246perf_include_instdir = $(libbpf_include_dir)
1247perf_examples_instdir = $(perf_examples_dir)
1248STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1249tip_instdir = $(tipdir)
1250else
1251perfexec_instdir = $(prefix)/$(perfexecdir)
1252perf_include_instdir = $(prefix)/$(libbpf_include_dir)
1253perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1254STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1255tip_instdir = $(prefix)/$(tipdir)
1256endif
1257perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1258perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1259perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1260STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1261tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1262
1263export perfexec_instdir_SQ
1264
1265print_var = $(eval $(print_var_code)) $(info $(MSG))
1266define print_var_code
1267 MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
1268endef
1269
1270ifeq ($(feature_display),1)
1271 $(call feature_display_entries)
1272endif
1273
1274ifeq ($(VF),1)
1275 # Display EXTRA features which are detected manualy
1276 # from here with feature_check call and thus cannot
1277 # be partof global state output.
1278 $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
1279 $(call print_var,prefix)
1280 $(call print_var,bindir)
1281 $(call print_var,libdir)
1282 $(call print_var,sysconfdir)
1283 $(call print_var,LIBUNWIND_DIR)
1284 $(call print_var,LIBDW_DIR)
1285 $(call print_var,JDIR)
1286
1287 ifeq ($(dwarf-post-unwind),1)
1288 $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
1289 endif
1290endif
1291
1292$(info )
1293
1294$(call detected_var,bindir_SQ)
1295$(call detected_var,PYTHON_WORD)
1296ifneq ($(OUTPUT),)
1297$(call detected_var,OUTPUT)
1298endif
1299$(call detected_var,htmldir_SQ)
1300$(call detected_var,infodir_SQ)
1301$(call detected_var,mandir_SQ)
1302$(call detected_var,ETC_PERFCONFIG_SQ)
1303$(call detected_var,STRACE_GROUPS_DIR_SQ)
1304$(call detected_var,prefix_SQ)
1305$(call detected_var,perfexecdir_SQ)
1306$(call detected_var,libbpf_include_dir_SQ)
1307$(call detected_var,perf_examples_dir_SQ)
1308$(call detected_var,tipdir_SQ)
1309$(call detected_var,srcdir_SQ)
1310$(call detected_var,LIBDIR)
1311$(call detected_var,GTK_CFLAGS)
1312$(call detected_var,PERL_EMBED_CCOPTS)
1313$(call detected_var,PYTHON_EMBED_CCOPTS)
1314ifneq ($(BISON_FILE_PREFIX_MAP),)
1315$(call detected_var,BISON_FILE_PREFIX_MAP)
1316endif
1317
1318# re-generate FEATURE-DUMP as we may have called feature_check, found out
1319# extra libraries to add to LDFLAGS of some other test and then redo those
1320# tests.
1321$(shell rm -f $(FEATURE_DUMP_FILENAME))
1322$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))