xref: /openbmc/linux/tools/perf/Makefile.config (revision 6df696cd) 
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: $(BISON) is missing on this system, please install it)
217endif
218
219ifeq ($(BUILD_BPF_SKEL),1)
220  ifeq ($(call get-executable,$(CLANG)),)
221    dummy := $(error $(CLANG) is missing on this system, please install it to be able to build with BUILD_BPF_SKEL=1)
222  endif
223endif
224
225ifneq ($(OUTPUT),)
226  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
227    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
228  endif
229endif
230
231# Treat warnings as errors unless directed not to
232ifneq ($(WERROR),0)
233  CORE_CFLAGS += -Werror
234  CXXFLAGS += -Werror
235  HOSTCFLAGS += -Werror
236endif
237
238ifndef DEBUG
239  DEBUG := 0
240endif
241
242ifeq ($(DEBUG),0)
243CORE_CFLAGS += -DNDEBUG=1
244ifeq ($(CC_NO_CLANG), 0)
245  CORE_CFLAGS += -O3
246else
247  CORE_CFLAGS += -O6
248endif
249endif
250
251ifdef PARSER_DEBUG
252  PARSER_DEBUG_BISON := -t
253  PARSER_DEBUG_FLEX  := -d
254  CFLAGS             += -DPARSER_DEBUG
255  $(call detected_var,PARSER_DEBUG_BISON)
256  $(call detected_var,PARSER_DEBUG_FLEX)
257endif
258
259# Try different combinations to accommodate systems that only have
260# python[2][3]-config in weird combinations in the following order of
261# priority from lowest to highest:
262#   * python2-config as per pep-0394.
263#   * python-config
264#   * python3-config
265#   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
266#
267PYTHON_AUTO := python-config
268PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
269PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
270PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
271
272# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
273# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
274ifdef PYTHON
275  ifndef PYTHON_CONFIG
276    PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
277    PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
278                          $(call $(error $(PYTHON)-config not found)))
279  endif
280endif
281
282# Select either auto detected python and python-config or use user supplied values if they are
283# defined. get-executable-or-default fails with an error if the first argument is supplied but
284# doesn't exist.
285override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
286override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
287
288grep-libs  = $(filter -l%,$(1))
289strip-libs  = $(filter-out -l%,$(1))
290
291PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
292
293# Python 3.8 changed the output of `python-config --ldflags` to not include the
294# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
295# libpython fails if that flag is not included in LDFLAGS
296ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
297  PYTHON_CONFIG_LDFLAGS := --ldflags --embed
298else
299  PYTHON_CONFIG_LDFLAGS := --ldflags
300endif
301
302ifdef PYTHON_CONFIG
303  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
304  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
305  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
306  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
307  FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
308  ifeq ($(CC_NO_CLANG), 0)
309    PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
310  endif
311endif
312
313FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
314FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
315
316FEATURE_CHECK_LDFLAGS-libaio = -lrt
317
318CORE_CFLAGS += -fno-omit-frame-pointer
319CORE_CFLAGS += -ggdb3
320CORE_CFLAGS += -funwind-tables
321CORE_CFLAGS += -Wall
322CORE_CFLAGS += -Wextra
323CORE_CFLAGS += -std=gnu11
324
325CXXFLAGS += -std=gnu++14 -fno-exceptions -fno-rtti
326CXXFLAGS += -Wall
327CXXFLAGS += -fno-omit-frame-pointer
328CXXFLAGS += -ggdb3
329CXXFLAGS += -funwind-tables
330CXXFLAGS += -Wno-strict-aliasing
331
332HOSTCFLAGS += -Wall
333HOSTCFLAGS += -Wextra
334
335# Enforce a non-executable stack, as we may regress (again) in the future by
336# adding assembler files missing the .GNU-stack linker note.
337LDFLAGS += -Wl,-z,noexecstack
338
339EXTLIBS = -lpthread -lrt -lm -ldl
340
341ifneq ($(TCMALLOC),)
342  CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
343  EXTLIBS += -ltcmalloc
344endif
345
346ifeq ($(FEATURES_DUMP),)
347# We will display at the end of this Makefile.config, using $(call feature_display_entries),
348# as we may retry some feature detection here.
349  FEATURE_DISPLAY_DEFERRED := 1
350include $(srctree)/tools/build/Makefile.feature
351else
352include $(FEATURES_DUMP)
353endif
354
355ifeq ($(feature-stackprotector-all), 1)
356  CORE_CFLAGS += -fstack-protector-all
357endif
358
359ifeq ($(DEBUG),0)
360  ifeq ($(feature-fortify-source), 1)
361    CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
362  endif
363endif
364
365INC_FLAGS += -I$(src-perf)/util/include
366INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
367INC_FLAGS += -I$(srctree)/tools/include/
368INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
369INC_FLAGS += -I$(srctree)/tools/include/uapi
370INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
371INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
372
373# $(obj-perf)      for generated common-cmds.h
374# $(obj-perf)/util for generated bison/flex headers
375ifneq ($(OUTPUT),)
376INC_FLAGS += -I$(obj-perf)/util
377INC_FLAGS += -I$(obj-perf)
378endif
379
380INC_FLAGS += -I$(src-perf)/util
381INC_FLAGS += -I$(src-perf)
382
383CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
384
385CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
386CXXFLAGS += $(INC_FLAGS)
387
388LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
389
390ifeq ($(feature-pthread-attr-setaffinity-np), 1)
391  CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
392endif
393
394ifeq ($(feature-pthread-barrier), 1)
395  CFLAGS += -DHAVE_PTHREAD_BARRIER
396endif
397
398ifndef NO_BIONIC
399  $(call feature_check,bionic)
400  ifeq ($(feature-bionic), 1)
401    BIONIC := 1
402    CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
403    CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
404    EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
405    EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
406  endif
407endif
408
409ifeq ($(feature-eventfd), 1)
410  CFLAGS += -DHAVE_EVENTFD_SUPPORT
411endif
412
413ifeq ($(feature-get_current_dir_name), 1)
414  CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
415endif
416
417ifeq ($(feature-gettid), 1)
418  CFLAGS += -DHAVE_GETTID
419endif
420
421ifeq ($(feature-file-handle), 1)
422  CFLAGS += -DHAVE_FILE_HANDLE
423endif
424
425ifdef NO_LIBELF
426  NO_DWARF := 1
427  NO_LIBUNWIND := 1
428  NO_LIBDW_DWARF_UNWIND := 1
429  NO_LIBBPF := 1
430  NO_JVMTI := 1
431else
432  ifeq ($(feature-libelf), 0)
433    ifeq ($(feature-glibc), 1)
434      LIBC_SUPPORT := 1
435    endif
436    ifeq ($(BIONIC),1)
437      LIBC_SUPPORT := 1
438    endif
439    ifeq ($(LIBC_SUPPORT),1)
440      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.)
441    else
442      ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
443        ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
444          msg := $(error No libasan found, please install libasan);
445        endif
446      endif
447
448      ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
449        ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
450          msg := $(error No libubsan found, please install libubsan);
451        endif
452      endif
453
454      ifneq ($(filter s% -static%,$(LDFLAGS),),)
455        msg := $(error No static glibc found, please install glibc-static);
456      else
457        msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
458      endif
459    endif
460  else
461    ifndef NO_LIBDW_DWARF_UNWIND
462      ifneq ($(feature-libdw-dwarf-unwind),1)
463        NO_LIBDW_DWARF_UNWIND := 1
464        msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
465      endif
466    endif
467    ifneq ($(feature-dwarf), 1)
468      ifndef NO_DWARF
469        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);
470        NO_DWARF := 1
471      endif
472    else
473      ifneq ($(feature-dwarf_getlocations), 1)
474        msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
475      else
476        CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
477      endif # dwarf_getlocations
478    endif # Dwarf support
479  endif # libelf support
480endif # NO_LIBELF
481
482ifeq ($(feature-libaio), 1)
483  ifndef NO_AIO
484    CFLAGS += -DHAVE_AIO_SUPPORT
485  endif
486endif
487
488ifdef NO_DWARF
489  NO_LIBDW_DWARF_UNWIND := 1
490endif
491
492ifeq ($(feature-scandirat), 1)
493  CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
494endif
495
496ifeq ($(feature-sched_getcpu), 1)
497  CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
498endif
499
500ifeq ($(feature-setns), 1)
501  CFLAGS += -DHAVE_SETNS_SUPPORT
502  $(call detected,CONFIG_SETNS)
503endif
504
505ifdef CORESIGHT
506  $(call feature_check,libopencsd)
507  ifeq ($(feature-libopencsd), 1)
508    CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
509    ifeq ($(feature-reallocarray), 0)
510      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
511    endif
512    LDFLAGS += $(LIBOPENCSD_LDFLAGS)
513    EXTLIBS += $(OPENCSDLIBS)
514    $(call detected,CONFIG_LIBOPENCSD)
515    ifdef CSTRACE_RAW
516      CFLAGS += -DCS_DEBUG_RAW
517      ifeq (${CSTRACE_RAW}, packed)
518        CFLAGS += -DCS_RAW_PACKED
519      endif
520    endif
521  else
522    dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
523  endif
524endif
525
526ifndef NO_LIBELF
527  CFLAGS += -DHAVE_LIBELF_SUPPORT
528  EXTLIBS += -lelf
529  $(call detected,CONFIG_LIBELF)
530
531  ifeq ($(feature-libelf-getphdrnum), 1)
532    CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
533  endif
534
535  ifeq ($(feature-libelf-gelf_getnote), 1)
536    CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
537  else
538    msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
539  endif
540
541  ifeq ($(feature-libelf-getshdrstrndx), 1)
542    CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
543  endif
544
545  ifndef NO_LIBDEBUGINFOD
546    $(call feature_check,libdebuginfod)
547    ifeq ($(feature-libdebuginfod), 1)
548      CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
549      EXTLIBS += -ldebuginfod
550    endif
551  endif
552
553  ifndef NO_DWARF
554    ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
555      msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
556      NO_DWARF := 1
557    else
558      CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
559      LDFLAGS += $(LIBDW_LDFLAGS)
560      EXTLIBS += ${DWARFLIBS}
561      $(call detected,CONFIG_DWARF)
562    endif # PERF_HAVE_DWARF_REGS
563  endif # NO_DWARF
564
565  ifndef NO_LIBBPF
566    ifeq ($(feature-bpf), 1)
567      CFLAGS += -DHAVE_LIBBPF_SUPPORT
568      $(call detected,CONFIG_LIBBPF)
569
570      # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
571      $(call feature_check,libbpf)
572
573      ifdef LIBBPF_DYNAMIC
574        ifeq ($(feature-libbpf), 1)
575          EXTLIBS += -lbpf
576          $(call detected,CONFIG_LIBBPF_DYNAMIC)
577        else
578          dummy := $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel);
579        endif
580      else
581        # Libbpf will be built as a static library from tools/lib/bpf.
582	LIBBPF_STATIC := 1
583      endif
584    endif
585
586    ifndef NO_DWARF
587      ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
588        CFLAGS += -DHAVE_BPF_PROLOGUE
589        $(call detected,CONFIG_BPF_PROLOGUE)
590      else
591        msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
592      endif
593    else
594      msg := $(warning DWARF support is off, BPF prologue is disabled);
595    endif
596
597  endif # NO_LIBBPF
598endif # NO_LIBELF
599
600ifndef NO_SDT
601  ifneq ($(feature-sdt), 1)
602    msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
603    NO_SDT := 1;
604  else
605    CFLAGS += -DHAVE_SDT_EVENT
606    $(call detected,CONFIG_SDT_EVENT)
607  endif
608endif
609
610ifdef PERF_HAVE_JITDUMP
611  ifndef NO_LIBELF
612    $(call detected,CONFIG_JITDUMP)
613    CFLAGS += -DHAVE_JITDUMP
614  endif
615endif
616
617ifeq ($(SRCARCH),powerpc)
618  ifndef NO_DWARF
619    CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
620  endif
621endif
622
623ifndef NO_LIBUNWIND
624  have_libunwind :=
625
626  $(call feature_check,libunwind-x86)
627  ifeq ($(feature-libunwind-x86), 1)
628    $(call detected,CONFIG_LIBUNWIND_X86)
629    CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
630    LDFLAGS += -lunwind-x86
631    EXTLIBS_LIBUNWIND += -lunwind-x86
632    have_libunwind = 1
633  endif
634
635  $(call feature_check,libunwind-aarch64)
636  ifeq ($(feature-libunwind-aarch64), 1)
637    $(call detected,CONFIG_LIBUNWIND_AARCH64)
638    CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
639    LDFLAGS += -lunwind-aarch64
640    EXTLIBS_LIBUNWIND += -lunwind-aarch64
641    have_libunwind = 1
642    $(call feature_check,libunwind-debug-frame-aarch64)
643    ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
644      msg := $(warning No debug_frame support found in libunwind-aarch64);
645      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
646    endif
647  endif
648
649  ifneq ($(feature-libunwind), 1)
650    msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
651    NO_LOCAL_LIBUNWIND := 1
652  else
653    have_libunwind := 1
654    $(call detected,CONFIG_LOCAL_LIBUNWIND)
655  endif
656
657  ifneq ($(have_libunwind), 1)
658    NO_LIBUNWIND := 1
659  endif
660else
661  NO_LOCAL_LIBUNWIND := 1
662endif
663
664ifndef NO_LIBBPF
665  ifneq ($(feature-bpf), 1)
666    msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
667    NO_LIBBPF := 1
668  endif
669endif
670
671ifdef BUILD_BPF_SKEL
672  $(call feature_check,clang-bpf-co-re)
673  ifeq ($(feature-clang-bpf-co-re), 0)
674    dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
675  endif
676  ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
677    dummy := $(error Error: BPF skeleton support requires libbpf)
678  endif
679  $(call detected,CONFIG_PERF_BPF_SKEL)
680  CFLAGS += -DHAVE_BPF_SKEL
681endif
682
683dwarf-post-unwind := 1
684dwarf-post-unwind-text := BUG
685
686# setup DWARF post unwinder
687ifdef NO_LIBUNWIND
688  ifdef NO_LIBDW_DWARF_UNWIND
689    msg := $(warning Disabling post unwind, no support found.);
690    dwarf-post-unwind := 0
691  else
692    dwarf-post-unwind-text := libdw
693    $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
694  endif
695else
696  dwarf-post-unwind-text := libunwind
697  $(call detected,CONFIG_LIBUNWIND)
698  # Enable libunwind support by default.
699  ifndef NO_LIBDW_DWARF_UNWIND
700    NO_LIBDW_DWARF_UNWIND := 1
701  endif
702endif
703
704ifeq ($(dwarf-post-unwind),1)
705  CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
706  $(call detected,CONFIG_DWARF_UNWIND)
707else
708  NO_DWARF_UNWIND := 1
709endif
710
711ifndef NO_LOCAL_LIBUNWIND
712  ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
713    $(call feature_check,libunwind-debug-frame)
714    ifneq ($(feature-libunwind-debug-frame), 1)
715      msg := $(warning No debug_frame support found in libunwind);
716      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
717    endif
718  else
719    # non-ARM has no dwarf_find_debug_frame() function:
720    CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
721  endif
722  EXTLIBS += $(LIBUNWIND_LIBS)
723  LDFLAGS += $(LIBUNWIND_LIBS)
724endif
725ifeq ($(findstring -static,${LDFLAGS}),-static)
726  # gcc -static links libgcc_eh which contans piece of libunwind
727  LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
728endif
729
730ifndef NO_LIBUNWIND
731  CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
732  CFLAGS  += $(LIBUNWIND_CFLAGS)
733  LDFLAGS += $(LIBUNWIND_LDFLAGS)
734  EXTLIBS += $(EXTLIBS_LIBUNWIND)
735endif
736
737ifneq ($(NO_LIBTRACEEVENT),1)
738  ifeq ($(NO_SYSCALL_TABLE),0)
739    $(call detected,CONFIG_TRACE)
740  else
741    ifndef NO_LIBAUDIT
742      $(call feature_check,libaudit)
743      ifneq ($(feature-libaudit), 1)
744        msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
745        NO_LIBAUDIT := 1
746      else
747        CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
748        EXTLIBS += -laudit
749        $(call detected,CONFIG_TRACE)
750      endif
751    endif
752  endif
753endif
754
755ifndef NO_LIBCRYPTO
756  ifneq ($(feature-libcrypto), 1)
757    msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
758    NO_LIBCRYPTO := 1
759  else
760    CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
761    EXTLIBS += -lcrypto
762    $(call detected,CONFIG_CRYPTO)
763  endif
764endif
765
766ifndef NO_SLANG
767  ifneq ($(feature-libslang), 1)
768    ifneq ($(feature-libslang-include-subdir), 1)
769      msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
770      NO_SLANG := 1
771    else
772      CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
773    endif
774  endif
775  ifndef NO_SLANG
776    # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
777    CFLAGS += -DHAVE_SLANG_SUPPORT
778    EXTLIBS += -lslang
779    $(call detected,CONFIG_SLANG)
780  endif
781endif
782
783ifdef GTK2
784  FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
785  $(call feature_check,gtk2)
786  ifneq ($(feature-gtk2), 1)
787    msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
788    NO_GTK2 := 1
789  else
790    $(call feature_check,gtk2-infobar)
791    ifeq ($(feature-gtk2-infobar), 1)
792      GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
793    endif
794    CFLAGS += -DHAVE_GTK2_SUPPORT
795    GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
796    GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
797    EXTLIBS += -ldl
798  endif
799endif
800
801ifdef NO_LIBPERL
802  CFLAGS += -DNO_LIBPERL
803else
804  PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
805  PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
806  PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
807  PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
808  PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
809  PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
810  PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
811  FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
812
813  ifneq ($(feature-libperl), 1)
814    CFLAGS += -DNO_LIBPERL
815    NO_LIBPERL := 1
816    msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
817  else
818    LDFLAGS += $(PERL_EMBED_LDFLAGS)
819    EXTLIBS += $(PERL_EMBED_LIBADD)
820    CFLAGS += -DHAVE_LIBPERL_SUPPORT
821    ifeq ($(CC_NO_CLANG), 0)
822      CFLAGS += -Wno-compound-token-split-by-macro
823    endif
824    $(call detected,CONFIG_LIBPERL)
825  endif
826endif
827
828ifeq ($(feature-timerfd), 1)
829  CFLAGS += -DHAVE_TIMERFD_SUPPORT
830else
831  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
832endif
833
834disable-python = $(eval $(disable-python_code))
835define disable-python_code
836  CFLAGS += -DNO_LIBPYTHON
837  $(warning $1)
838  NO_LIBPYTHON := 1
839endef
840
841PYTHON_EXTENSION_SUFFIX := '.so'
842ifdef NO_LIBPYTHON
843  $(call disable-python,Python support disabled by user)
844else
845
846  ifndef PYTHON
847    $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
848  else
849    PYTHON_WORD := $(call shell-wordify,$(PYTHON))
850
851    ifndef PYTHON_CONFIG
852      $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
853    else
854
855      ifneq ($(feature-libpython), 1)
856        $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
857      else
858         LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
859         EXTLIBS += $(PYTHON_EMBED_LIBADD)
860         PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
861         ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
862           PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
863           LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
864	 else
865           msg := $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent);
866         endif
867         CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
868         $(call detected,CONFIG_LIBPYTHON)
869      endif
870    endif
871  endif
872endif
873
874ifneq ($(NO_JEVENTS),1)
875  ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
876    NO_JEVENTS := 1
877  endif
878endif
879ifneq ($(NO_JEVENTS),1)
880  NO_JEVENTS := 0
881  ifndef PYTHON
882    $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
883  else
884    # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
885    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)
886    ifneq ($(JEVENTS_PYTHON_GOOD), 1)
887      $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
888    endif
889  endif
890endif
891
892ifdef BUILD_NONDISTRO
893  ifeq ($(feature-libbfd), 1)
894    EXTLIBS += -lbfd -lopcodes
895  else
896    # we are on a system that requires -liberty and (maybe) -lz
897    # to link against -lbfd; test each case individually here
898
899    # call all detections now so we get correct
900    # status in VF output
901    $(call feature_check,libbfd-liberty)
902    $(call feature_check,libbfd-liberty-z)
903
904    ifeq ($(feature-libbfd-liberty), 1)
905      EXTLIBS += -lbfd -lopcodes -liberty
906    else
907      ifeq ($(feature-libbfd-liberty-z), 1)
908        EXTLIBS += -lbfd -lopcodes -liberty -lz
909      endif
910    endif
911    $(call feature_check,disassembler-four-args)
912    $(call feature_check,disassembler-init-styled)
913  endif
914
915  CFLAGS += -DHAVE_LIBBFD_SUPPORT
916  CXXFLAGS += -DHAVE_LIBBFD_SUPPORT
917  ifeq ($(feature-libbfd-buildid), 1)
918    CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
919  else
920    msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
921  endif
922endif
923
924ifndef NO_DEMANGLE
925  $(call feature_check,cxa-demangle)
926  ifeq ($(feature-cxa-demangle), 1)
927    EXTLIBS += -lstdc++
928    CFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
929    CXXFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
930  endif
931  ifdef BUILD_NONDISTRO
932    ifeq ($(filter -liberty,$(EXTLIBS)),)
933      $(call feature_check,cplus-demangle)
934      ifeq ($(feature-cplus-demangle), 1)
935        EXTLIBS += -liberty
936      endif
937    endif
938    ifneq ($(filter -liberty,$(EXTLIBS)),)
939      CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
940      CXXFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
941    endif
942  endif
943endif
944
945ifndef NO_ZLIB
946  ifeq ($(feature-zlib), 1)
947    CFLAGS += -DHAVE_ZLIB_SUPPORT
948    EXTLIBS += -lz
949    $(call detected,CONFIG_ZLIB)
950  else
951    NO_ZLIB := 1
952  endif
953endif
954
955ifndef NO_LZMA
956  ifeq ($(feature-lzma), 1)
957    CFLAGS += -DHAVE_LZMA_SUPPORT
958    EXTLIBS += -llzma
959    $(call detected,CONFIG_LZMA)
960  else
961    msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
962    NO_LZMA := 1
963  endif
964endif
965
966ifndef NO_LIBZSTD
967  ifeq ($(feature-libzstd), 1)
968    CFLAGS += -DHAVE_ZSTD_SUPPORT
969    CFLAGS += $(LIBZSTD_CFLAGS)
970    LDFLAGS += $(LIBZSTD_LDFLAGS)
971    EXTLIBS += -lzstd
972    $(call detected,CONFIG_ZSTD)
973  else
974    msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
975    NO_LIBZSTD := 1
976  endif
977endif
978
979ifndef NO_LIBCAP
980  ifeq ($(feature-libcap), 1)
981    CFLAGS += -DHAVE_LIBCAP_SUPPORT
982    EXTLIBS += -lcap
983    $(call detected,CONFIG_LIBCAP)
984  else
985    msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
986    NO_LIBCAP := 1
987  endif
988endif
989
990ifndef NO_BACKTRACE
991  ifeq ($(feature-backtrace), 1)
992    CFLAGS += -DHAVE_BACKTRACE_SUPPORT
993  endif
994endif
995
996ifndef NO_LIBNUMA
997  ifeq ($(feature-libnuma), 0)
998    msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
999    NO_LIBNUMA := 1
1000  else
1001    ifeq ($(feature-numa_num_possible_cpus), 0)
1002      msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
1003      NO_LIBNUMA := 1
1004    else
1005      CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1006      EXTLIBS += -lnuma
1007      $(call detected,CONFIG_NUMA)
1008    endif
1009  endif
1010endif
1011
1012ifdef HAVE_KVM_STAT_SUPPORT
1013    CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1014endif
1015
1016ifeq ($(feature-disassembler-four-args), 1)
1017    CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
1018endif
1019
1020ifeq ($(feature-disassembler-init-styled), 1)
1021    CFLAGS += -DDISASM_INIT_STYLED
1022endif
1023
1024ifeq (${IS_64_BIT}, 1)
1025  ifndef NO_PERF_READ_VDSO32
1026    $(call feature_check,compile-32)
1027    ifeq ($(feature-compile-32), 1)
1028      CFLAGS += -DHAVE_PERF_READ_VDSO32
1029    else
1030      NO_PERF_READ_VDSO32 := 1
1031    endif
1032  endif
1033  ifneq ($(SRCARCH), x86)
1034    NO_PERF_READ_VDSOX32 := 1
1035  endif
1036  ifndef NO_PERF_READ_VDSOX32
1037    $(call feature_check,compile-x32)
1038    ifeq ($(feature-compile-x32), 1)
1039      CFLAGS += -DHAVE_PERF_READ_VDSOX32
1040    else
1041      NO_PERF_READ_VDSOX32 := 1
1042    endif
1043  endif
1044else
1045  NO_PERF_READ_VDSO32 := 1
1046  NO_PERF_READ_VDSOX32 := 1
1047endif
1048
1049ifndef NO_LIBBABELTRACE
1050  $(call feature_check,libbabeltrace)
1051  ifeq ($(feature-libbabeltrace), 1)
1052    CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1053    LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1054    EXTLIBS += -lbabeltrace-ctf
1055    $(call detected,CONFIG_LIBBABELTRACE)
1056  else
1057    msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
1058  endif
1059endif
1060
1061ifndef NO_AUXTRACE
1062  ifeq ($(SRCARCH),x86)
1063    ifeq ($(feature-get_cpuid), 0)
1064      msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
1065      NO_AUXTRACE := 1
1066    endif
1067  endif
1068  ifndef NO_AUXTRACE
1069    $(call detected,CONFIG_AUXTRACE)
1070    CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1071    ifeq ($(feature-reallocarray), 0)
1072      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
1073    endif
1074  endif
1075endif
1076
1077ifndef NO_JVMTI
1078  ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1079    JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1080  else
1081    ifneq (,$(wildcard /usr/sbin/alternatives))
1082      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1083    endif
1084  endif
1085  ifndef JDIR
1086    $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1087    NO_JVMTI := 1
1088  endif
1089endif
1090
1091ifndef NO_JVMTI
1092  FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1093  $(call feature_check,jvmti)
1094  ifeq ($(feature-jvmti), 1)
1095    $(call detected_var,JDIR)
1096    ifndef NO_JVMTI_CMLR
1097      FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1098      $(call feature_check,jvmti-cmlr)
1099      ifeq ($(feature-jvmti-cmlr), 1)
1100        CFLAGS += -DHAVE_JVMTI_CMLR
1101      endif
1102    endif # NO_JVMTI_CMLR
1103  else
1104    $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1105    NO_JVMTI := 1
1106  endif
1107endif
1108
1109USE_CXX = 0
1110USE_CLANGLLVM = 0
1111ifdef LIBCLANGLLVM
1112  $(call feature_check,cxx)
1113  ifneq ($(feature-cxx), 1)
1114    msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
1115  else
1116    $(call feature_check,llvm)
1117    $(call feature_check,llvm-version)
1118    ifneq ($(feature-llvm), 1)
1119      msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
1120    else
1121      $(call feature_check,clang)
1122      ifneq ($(feature-clang), 1)
1123        msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
1124      else
1125        CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
1126        CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
1127        $(call detected,CONFIG_CXX)
1128        $(call detected,CONFIG_CLANGLLVM)
1129	USE_CXX = 1
1130	USE_LLVM = 1
1131	USE_CLANG = 1
1132        ifneq ($(feature-llvm-version),1)
1133          msg := $(warning This version of LLVM is not tested. May cause build errors)
1134        endif
1135      endif
1136    endif
1137  endif
1138endif
1139
1140ifndef NO_LIBPFM4
1141  $(call feature_check,libpfm4)
1142  ifeq ($(feature-libpfm4), 1)
1143    CFLAGS += -DHAVE_LIBPFM
1144    EXTLIBS += -lpfm
1145    ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1146    $(call detected,CONFIG_LIBPFM4)
1147  else
1148    msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
1149  endif
1150endif
1151
1152# libtraceevent is a recommended dependency picked up from the system.
1153ifneq ($(NO_LIBTRACEEVENT),1)
1154  $(call feature_check,libtraceevent)
1155  ifeq ($(feature-libtraceevent), 1)
1156    CFLAGS += -DHAVE_LIBTRACEEVENT
1157    EXTLIBS += -ltraceevent
1158    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
1159    LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1160    LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1161    LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1162    LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1163    CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1164    $(call detected,CONFIG_LIBTRACEEVENT)
1165  else
1166    dummy := $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel or build with NO_LIBTRACEEVENT=1)
1167  endif
1168
1169  $(call feature_check,libtracefs)
1170  ifeq ($(feature-libtracefs), 1)
1171    EXTLIBS += -ltracefs
1172    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
1173    LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1174    LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1175    LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1176    LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1177    CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1178  endif
1179endif
1180
1181# Among the variables below, these:
1182#   perfexecdir
1183#   libbpf_include_dir
1184#   perf_examples_dir
1185#   template_dir
1186#   mandir
1187#   infodir
1188#   htmldir
1189#   ETC_PERFCONFIG (but not sysconfdir)
1190# can be specified as a relative path some/where/else;
1191# this is interpreted as relative to $(prefix) and "perf" at
1192# runtime figures out where they are based on the path to the executable.
1193# This can help installing the suite in a relocatable way.
1194
1195# Make the path relative to DESTDIR, not to prefix
1196ifndef DESTDIR
1197prefix ?= $(HOME)
1198endif
1199bindir_relative = bin
1200bindir = $(abspath $(prefix)/$(bindir_relative))
1201includedir_relative = include
1202includedir = $(abspath $(prefix)/$(includedir_relative))
1203mandir = share/man
1204infodir = share/info
1205perfexecdir = libexec/perf-core
1206# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
1207libbpf_include_dir = /usr/include
1208perf_examples_dir = lib/perf/examples
1209sharedir = $(prefix)/share
1210template_dir = share/perf-core/templates
1211STRACE_GROUPS_DIR = share/perf-core/strace/groups
1212htmldir = share/doc/perf-doc
1213tipdir = share/doc/perf-tip
1214srcdir = $(srctree)/tools/perf
1215ifeq ($(prefix),/usr)
1216sysconfdir = /etc
1217ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1218else
1219sysconfdir = $(prefix)/etc
1220ETC_PERFCONFIG = etc/perfconfig
1221endif
1222ifndef lib
1223ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1224lib = lib64
1225else
1226lib = lib
1227endif
1228endif # lib
1229libdir = $(prefix)/$(lib)
1230
1231# Shell quote (do not use $(call) to accommodate ancient setups);
1232ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1233STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1234DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1235bindir_SQ = $(subst ','\'',$(bindir))
1236includedir_SQ = $(subst ','\'',$(includedir))
1237mandir_SQ = $(subst ','\'',$(mandir))
1238infodir_SQ = $(subst ','\'',$(infodir))
1239perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1240libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
1241perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1242template_dir_SQ = $(subst ','\'',$(template_dir))
1243htmldir_SQ = $(subst ','\'',$(htmldir))
1244tipdir_SQ = $(subst ','\'',$(tipdir))
1245prefix_SQ = $(subst ','\'',$(prefix))
1246sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1247libdir_SQ = $(subst ','\'',$(libdir))
1248srcdir_SQ = $(subst ','\'',$(srcdir))
1249
1250ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1251perfexec_instdir = $(perfexecdir)
1252perf_include_instdir = $(libbpf_include_dir)
1253perf_examples_instdir = $(perf_examples_dir)
1254STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1255tip_instdir = $(tipdir)
1256else
1257perfexec_instdir = $(prefix)/$(perfexecdir)
1258perf_include_instdir = $(prefix)/$(libbpf_include_dir)
1259perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1260STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1261tip_instdir = $(prefix)/$(tipdir)
1262endif
1263perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1264perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1265perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1266STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1267tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1268
1269export perfexec_instdir_SQ
1270
1271print_var = $(eval $(print_var_code)) $(info $(MSG))
1272define print_var_code
1273    MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
1274endef
1275
1276ifeq ($(feature_display),1)
1277  $(call feature_display_entries)
1278endif
1279
1280ifeq ($(VF),1)
1281  # Display EXTRA features which are detected manualy
1282  # from here with feature_check call and thus cannot
1283  # be partof global state output.
1284  $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
1285  $(call print_var,prefix)
1286  $(call print_var,bindir)
1287  $(call print_var,libdir)
1288  $(call print_var,sysconfdir)
1289  $(call print_var,LIBUNWIND_DIR)
1290  $(call print_var,LIBDW_DIR)
1291  $(call print_var,JDIR)
1292
1293  ifeq ($(dwarf-post-unwind),1)
1294    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
1295  endif
1296endif
1297
1298$(info )
1299
1300$(call detected_var,bindir_SQ)
1301$(call detected_var,PYTHON_WORD)
1302ifneq ($(OUTPUT),)
1303$(call detected_var,OUTPUT)
1304endif
1305$(call detected_var,htmldir_SQ)
1306$(call detected_var,infodir_SQ)
1307$(call detected_var,mandir_SQ)
1308$(call detected_var,ETC_PERFCONFIG_SQ)
1309$(call detected_var,STRACE_GROUPS_DIR_SQ)
1310$(call detected_var,prefix_SQ)
1311$(call detected_var,perfexecdir_SQ)
1312$(call detected_var,libbpf_include_dir_SQ)
1313$(call detected_var,perf_examples_dir_SQ)
1314$(call detected_var,tipdir_SQ)
1315$(call detected_var,srcdir_SQ)
1316$(call detected_var,LIBDIR)
1317$(call detected_var,GTK_CFLAGS)
1318$(call detected_var,PERL_EMBED_CCOPTS)
1319$(call detected_var,PYTHON_EMBED_CCOPTS)
1320ifneq ($(BISON_FILE_PREFIX_MAP),)
1321$(call detected_var,BISON_FILE_PREFIX_MAP)
1322endif
1323
1324# re-generate FEATURE-DUMP as we may have called feature_check, found out
1325# extra libraries to add to LDFLAGS of some other test and then redo those
1326# tests.
1327$(shell rm -f $(FEATURE_DUMP_FILENAME))
1328$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
1329