xref: /openbmc/linux/tools/perf/Makefile.config (revision d7c4f89a) 
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 $(SRCARCH),powerpc arm64 s390 mips))
42      NO_SYSCALL_TABLE := 0
43    endif
44  endif
45
46  ifneq ($(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 ($(SRCARCH),riscv)
84  NO_PERF_REGS := 0
85endif
86
87ifeq ($(SRCARCH),csky)
88  NO_PERF_REGS := 0
89endif
90
91ifeq ($(ARCH),s390)
92  NO_PERF_REGS := 0
93  CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
94endif
95
96ifeq ($(ARCH),mips)
97  NO_PERF_REGS := 0
98  CFLAGS += -I$(OUTPUT)arch/mips/include/generated
99  LIBUNWIND_LIBS = -lunwind -lunwind-mips
100endif
101
102ifeq ($(NO_PERF_REGS),0)
103  $(call detected,CONFIG_PERF_REGS)
104endif
105
106# So far there's only x86 and arm libdw unwind support merged in perf.
107# Disable it on all other architectures in case libdw unwind
108# support is detected in system. Add supported architectures
109# to the check.
110ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv))
111  NO_LIBDW_DWARF_UNWIND := 1
112endif
113
114ifeq ($(LIBUNWIND_LIBS),)
115  NO_LIBUNWIND := 1
116endif
117#
118# For linking with debug library, run like:
119#
120#   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
121#
122
123libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
124define libunwind_arch_set_flags_code
125  FEATURE_CHECK_CFLAGS-libunwind-$(1)  = -I$(LIBUNWIND_DIR)/include
126  FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
127endef
128
129ifdef LIBUNWIND_DIR
130  LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
131  LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
132  LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64
133  $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
134endif
135
136# Set per-feature check compilation flags
137FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
138FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
139FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
140FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
141
142FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
143FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
144FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
145FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
146
147FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
148
149ifdef CSINCLUDES
150  LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
151endif
152OPENCSDLIBS := -lopencsd_c_api
153ifeq ($(findstring -static,${LDFLAGS}),-static)
154  OPENCSDLIBS += -lopencsd -lstdc++
155endif
156ifdef CSLIBS
157  LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
158endif
159FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
160FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
161
162ifeq ($(NO_PERF_REGS),0)
163  CFLAGS += -DHAVE_PERF_REGS_SUPPORT
164endif
165
166# for linking with debug library, run like:
167# make DEBUG=1 LIBDW_DIR=/opt/libdw/
168ifdef LIBDW_DIR
169  LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
170  LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
171endif
172DWARFLIBS := -ldw
173ifeq ($(findstring -static,${LDFLAGS}),-static)
174  DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
175endif
176FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
177FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
178
179# for linking with debug library, run like:
180# make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
181ifdef LIBBABELTRACE_DIR
182  LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
183  LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
184endif
185FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
186FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
187
188ifdef LIBZSTD_DIR
189  LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
190  LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
191endif
192FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
193FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
194
195FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
196# include ARCH specific config
197-include $(src-perf)/arch/$(SRCARCH)/Makefile
198
199ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
200  CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
201endif
202
203include $(srctree)/tools/scripts/utilities.mak
204
205ifeq ($(call get-executable,$(FLEX)),)
206  dummy := $(error Error: $(FLEX) is missing on this system, please install it)
207endif
208
209ifeq ($(call get-executable,$(BISON)),)
210  dummy := $(error Error: $(BISON) is missing on this system, please install it)
211endif
212
213ifneq ($(OUTPUT),)
214  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
215    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
216  endif
217endif
218
219# Treat warnings as errors unless directed not to
220ifneq ($(WERROR),0)
221  CORE_CFLAGS += -Werror
222  CXXFLAGS += -Werror
223  HOSTCFLAGS += -Werror
224endif
225
226ifndef DEBUG
227  DEBUG := 0
228endif
229
230ifeq ($(DEBUG),0)
231ifeq ($(CC_NO_CLANG), 0)
232  CORE_CFLAGS += -O3
233else
234  CORE_CFLAGS += -O6
235endif
236endif
237
238ifdef PARSER_DEBUG
239  PARSER_DEBUG_BISON := -t
240  PARSER_DEBUG_FLEX  := -d
241  CFLAGS             += -DPARSER_DEBUG
242  $(call detected_var,PARSER_DEBUG_BISON)
243  $(call detected_var,PARSER_DEBUG_FLEX)
244endif
245
246# Try different combinations to accommodate systems that only have
247# python[2][3]-config in weird combinations in the following order of
248# priority from lowest to highest:
249#   * python2-config as per pep-0394.
250#   * python-config
251#   * python3-config
252#   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
253#
254PYTHON_AUTO := python-config
255PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
256PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
257PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
258
259# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
260# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
261ifdef PYTHON
262  ifndef PYTHON_CONFIG
263    PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
264    PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
265                          $(call $(error $(PYTHON)-config not found)))
266  endif
267endif
268
269# Select either auto detected python and python-config or use user supplied values if they are
270# defined. get-executable-or-default fails with an error if the first argument is supplied but
271# doesn't exist.
272override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
273override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
274
275grep-libs  = $(filter -l%,$(1))
276strip-libs  = $(filter-out -l%,$(1))
277
278PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
279
280# Python 3.8 changed the output of `python-config --ldflags` to not include the
281# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
282# libpython fails if that flag is not included in LDFLAGS
283ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
284  PYTHON_CONFIG_LDFLAGS := --ldflags --embed
285else
286  PYTHON_CONFIG_LDFLAGS := --ldflags
287endif
288
289ifdef PYTHON_CONFIG
290  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
291  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
292  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
293  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
294  FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
295  ifeq ($(CC_NO_CLANG), 0)
296    PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
297  endif
298endif
299
300FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
301FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
302
303FEATURE_CHECK_LDFLAGS-libaio = -lrt
304
305CORE_CFLAGS += -fno-omit-frame-pointer
306CORE_CFLAGS += -ggdb3
307CORE_CFLAGS += -funwind-tables
308CORE_CFLAGS += -Wall
309CORE_CFLAGS += -Wextra
310CORE_CFLAGS += -std=gnu11
311
312CXXFLAGS += -std=gnu++14 -fno-exceptions -fno-rtti
313CXXFLAGS += -Wall
314CXXFLAGS += -fno-omit-frame-pointer
315CXXFLAGS += -ggdb3
316CXXFLAGS += -funwind-tables
317CXXFLAGS += -Wno-strict-aliasing
318
319HOSTCFLAGS += -Wall
320HOSTCFLAGS += -Wextra
321
322# Enforce a non-executable stack, as we may regress (again) in the future by
323# adding assembler files missing the .GNU-stack linker note.
324LDFLAGS += -Wl,-z,noexecstack
325
326EXTLIBS = -lpthread -lrt -lm -ldl
327
328ifneq ($(TCMALLOC),)
329  CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
330  EXTLIBS += -ltcmalloc
331endif
332
333ifeq ($(FEATURES_DUMP),)
334# We will display at the end of this Makefile.config, using $(call feature_display_entries),
335# as we may retry some feature detection here.
336  FEATURE_DISPLAY_DEFERRED := 1
337include $(srctree)/tools/build/Makefile.feature
338else
339include $(FEATURES_DUMP)
340endif
341
342ifeq ($(feature-stackprotector-all), 1)
343  CORE_CFLAGS += -fstack-protector-all
344endif
345
346ifeq ($(DEBUG),0)
347  ifeq ($(feature-fortify-source), 1)
348    CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
349  endif
350endif
351
352INC_FLAGS += -I$(src-perf)/util/include
353INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
354INC_FLAGS += -I$(srctree)/tools/include/
355INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
356INC_FLAGS += -I$(srctree)/tools/include/uapi
357INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
358INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
359
360# $(obj-perf)      for generated common-cmds.h
361# $(obj-perf)/util for generated bison/flex headers
362ifneq ($(OUTPUT),)
363INC_FLAGS += -I$(obj-perf)/util
364INC_FLAGS += -I$(obj-perf)
365endif
366
367INC_FLAGS += -I$(src-perf)/util
368INC_FLAGS += -I$(src-perf)
369
370CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
371
372CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
373CXXFLAGS += $(INC_FLAGS)
374
375LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
376
377ifeq ($(feature-pthread-attr-setaffinity-np), 1)
378  CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
379endif
380
381ifeq ($(feature-pthread-barrier), 1)
382  CFLAGS += -DHAVE_PTHREAD_BARRIER
383endif
384
385ifndef NO_BIONIC
386  $(call feature_check,bionic)
387  ifeq ($(feature-bionic), 1)
388    BIONIC := 1
389    CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
390    CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
391    EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
392    EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
393  endif
394endif
395
396ifeq ($(feature-eventfd), 1)
397  CFLAGS += -DHAVE_EVENTFD_SUPPORT
398endif
399
400ifeq ($(feature-get_current_dir_name), 1)
401  CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
402endif
403
404ifeq ($(feature-gettid), 1)
405  CFLAGS += -DHAVE_GETTID
406endif
407
408ifeq ($(feature-file-handle), 1)
409  CFLAGS += -DHAVE_FILE_HANDLE
410endif
411
412ifdef NO_LIBELF
413  NO_DWARF := 1
414  NO_DEMANGLE := 1
415  NO_LIBUNWIND := 1
416  NO_LIBDW_DWARF_UNWIND := 1
417  NO_LIBBPF := 1
418  NO_BPF_SKEL := 1
419  NO_JVMTI := 1
420else
421  ifeq ($(feature-libelf), 0)
422    ifeq ($(feature-glibc), 1)
423      LIBC_SUPPORT := 1
424    endif
425    ifeq ($(BIONIC),1)
426      LIBC_SUPPORT := 1
427    endif
428    ifeq ($(LIBC_SUPPORT),1)
429      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);
430
431      NO_LIBELF := 1
432      NO_DWARF := 1
433      NO_DEMANGLE := 1
434      NO_LIBUNWIND := 1
435      NO_LIBDW_DWARF_UNWIND := 1
436      NO_LIBBPF := 1
437      NO_JVMTI := 1
438    else
439      ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
440        ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
441          msg := $(error No libasan found, please install libasan);
442        endif
443      endif
444
445      ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
446        ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
447          msg := $(error No libubsan found, please install libubsan);
448        endif
449      endif
450
451      ifneq ($(filter s% -static%,$(LDFLAGS),),)
452        msg := $(error No static glibc found, please install glibc-static);
453      else
454        msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
455      endif
456    endif
457  else
458    ifndef NO_LIBDW_DWARF_UNWIND
459      ifneq ($(feature-libdw-dwarf-unwind),1)
460        NO_LIBDW_DWARF_UNWIND := 1
461        msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
462      endif
463    endif
464    ifneq ($(feature-dwarf), 1)
465      ifndef NO_DWARF
466        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);
467        NO_DWARF := 1
468      endif
469    else
470      ifneq ($(feature-dwarf_getlocations), 1)
471        msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
472      else
473        CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
474      endif # dwarf_getlocations
475    endif # Dwarf support
476  endif # libelf support
477endif # NO_LIBELF
478
479ifeq ($(feature-libaio), 1)
480  ifndef NO_AIO
481    CFLAGS += -DHAVE_AIO_SUPPORT
482  endif
483endif
484
485ifdef NO_DWARF
486  NO_LIBDW_DWARF_UNWIND := 1
487endif
488
489ifeq ($(feature-sched_getcpu), 1)
490  CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
491endif
492
493ifeq ($(feature-setns), 1)
494  CFLAGS += -DHAVE_SETNS_SUPPORT
495  $(call detected,CONFIG_SETNS)
496endif
497
498ifdef CORESIGHT
499  $(call feature_check,libopencsd)
500  ifeq ($(feature-libopencsd), 1)
501    CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
502    ifeq ($(feature-reallocarray), 0)
503      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
504    endif
505    LDFLAGS += $(LIBOPENCSD_LDFLAGS)
506    EXTLIBS += $(OPENCSDLIBS)
507    $(call detected,CONFIG_LIBOPENCSD)
508    ifdef CSTRACE_RAW
509      CFLAGS += -DCS_DEBUG_RAW
510      ifeq (${CSTRACE_RAW}, packed)
511        CFLAGS += -DCS_RAW_PACKED
512      endif
513    endif
514  else
515    dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
516  endif
517endif
518
519ifndef NO_LIBELF
520  CFLAGS += -DHAVE_LIBELF_SUPPORT
521  EXTLIBS += -lelf
522  $(call detected,CONFIG_LIBELF)
523
524  ifeq ($(feature-libelf-getphdrnum), 1)
525    CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
526  endif
527
528  ifeq ($(feature-libelf-gelf_getnote), 1)
529    CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
530  else
531    msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
532  endif
533
534  ifeq ($(feature-libelf-getshdrstrndx), 1)
535    CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
536  endif
537
538  ifndef NO_LIBDEBUGINFOD
539    $(call feature_check,libdebuginfod)
540    ifeq ($(feature-libdebuginfod), 1)
541      CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
542      EXTLIBS += -ldebuginfod
543    endif
544  endif
545
546  ifndef NO_DWARF
547    ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
548      msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
549      NO_DWARF := 1
550    else
551      CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
552      LDFLAGS += $(LIBDW_LDFLAGS)
553      EXTLIBS += ${DWARFLIBS}
554      $(call detected,CONFIG_DWARF)
555    endif # PERF_HAVE_DWARF_REGS
556  endif # NO_DWARF
557
558  ifndef NO_LIBBPF
559    ifeq ($(feature-bpf), 1)
560      CFLAGS += -DHAVE_LIBBPF_SUPPORT
561      $(call detected,CONFIG_LIBBPF)
562
563      # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
564      $(call feature_check,libbpf)
565
566      ifdef LIBBPF_DYNAMIC
567        ifeq ($(feature-libbpf), 1)
568          EXTLIBS += -lbpf
569          $(call detected,CONFIG_LIBBPF_DYNAMIC)
570        else
571          dummy := $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel);
572        endif
573      else
574        # Libbpf will be built as a static library from tools/lib/bpf.
575	LIBBPF_STATIC := 1
576      endif
577    endif
578
579    ifndef NO_DWARF
580      ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
581        CFLAGS += -DHAVE_BPF_PROLOGUE
582        $(call detected,CONFIG_BPF_PROLOGUE)
583      else
584        msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
585      endif
586    else
587      msg := $(warning DWARF support is off, BPF prologue is disabled);
588    endif
589
590  endif # NO_LIBBPF
591endif # NO_LIBELF
592
593ifndef NO_SDT
594  ifneq ($(feature-sdt), 1)
595    msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
596    NO_SDT := 1;
597  else
598    CFLAGS += -DHAVE_SDT_EVENT
599    $(call detected,CONFIG_SDT_EVENT)
600  endif
601endif
602
603ifdef PERF_HAVE_JITDUMP
604  ifndef NO_LIBELF
605    $(call detected,CONFIG_JITDUMP)
606    CFLAGS += -DHAVE_JITDUMP
607  endif
608endif
609
610ifeq ($(SRCARCH),powerpc)
611  ifndef NO_DWARF
612    CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
613  endif
614endif
615
616ifndef NO_LIBUNWIND
617  have_libunwind :=
618
619  $(call feature_check,libunwind-x86)
620  ifeq ($(feature-libunwind-x86), 1)
621    $(call detected,CONFIG_LIBUNWIND_X86)
622    CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
623    LDFLAGS += -lunwind-x86
624    EXTLIBS_LIBUNWIND += -lunwind-x86
625    have_libunwind = 1
626  endif
627
628  $(call feature_check,libunwind-aarch64)
629  ifeq ($(feature-libunwind-aarch64), 1)
630    $(call detected,CONFIG_LIBUNWIND_AARCH64)
631    CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
632    LDFLAGS += -lunwind-aarch64
633    EXTLIBS_LIBUNWIND += -lunwind-aarch64
634    have_libunwind = 1
635    $(call feature_check,libunwind-debug-frame-aarch64)
636    ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
637      msg := $(warning No debug_frame support found in libunwind-aarch64);
638      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
639    endif
640  endif
641
642  ifneq ($(feature-libunwind), 1)
643    msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
644    NO_LOCAL_LIBUNWIND := 1
645  else
646    have_libunwind := 1
647    $(call detected,CONFIG_LOCAL_LIBUNWIND)
648  endif
649
650  ifneq ($(have_libunwind), 1)
651    NO_LIBUNWIND := 1
652  endif
653else
654  NO_LOCAL_LIBUNWIND := 1
655endif
656
657ifndef NO_LIBBPF
658  ifneq ($(feature-bpf), 1)
659    msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
660    NO_LIBBPF := 1
661  endif
662else
663  NO_BPF_SKEL := 1
664endif
665
666ifndef NO_BPF_SKEL
667  $(call feature_check,clang-bpf-co-re)
668  ifeq ($(feature-clang-bpf-co-re), 0)
669    dummy := $(error: ERROR: BPF skeletons unsupported. clang too old/not installed or build with NO_BPF_SKEL=1.)
670  else
671    ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
672      dummy := $(error: ERROR: BPF skeletons unsupported. BPF skeleton support requires libbpf or build with NO_BPF_SKEL=1.)
673    else
674      $(call detected,CONFIG_PERF_BPF_SKEL)
675      CFLAGS += -DHAVE_BPF_SKEL
676    endif
677  endif
678endif
679
680dwarf-post-unwind := 1
681dwarf-post-unwind-text := BUG
682
683# setup DWARF post unwinder
684ifdef NO_LIBUNWIND
685  ifdef NO_LIBDW_DWARF_UNWIND
686    msg := $(warning Disabling post unwind, no support found.);
687    dwarf-post-unwind := 0
688  else
689    dwarf-post-unwind-text := libdw
690    $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
691  endif
692else
693  dwarf-post-unwind-text := libunwind
694  $(call detected,CONFIG_LIBUNWIND)
695  # Enable libunwind support by default.
696  ifndef NO_LIBDW_DWARF_UNWIND
697    NO_LIBDW_DWARF_UNWIND := 1
698  endif
699endif
700
701ifeq ($(dwarf-post-unwind),1)
702  CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
703  $(call detected,CONFIG_DWARF_UNWIND)
704else
705  NO_DWARF_UNWIND := 1
706endif
707
708ifndef NO_LOCAL_LIBUNWIND
709  ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
710    $(call feature_check,libunwind-debug-frame)
711    ifneq ($(feature-libunwind-debug-frame), 1)
712      msg := $(warning No debug_frame support found in libunwind);
713      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
714    endif
715  else
716    # non-ARM has no dwarf_find_debug_frame() function:
717    CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
718  endif
719  EXTLIBS += $(LIBUNWIND_LIBS)
720  LDFLAGS += $(LIBUNWIND_LIBS)
721endif
722ifeq ($(findstring -static,${LDFLAGS}),-static)
723  # gcc -static links libgcc_eh which contans piece of libunwind
724  LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
725endif
726
727ifndef NO_LIBUNWIND
728  CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
729  CFLAGS  += $(LIBUNWIND_CFLAGS)
730  LDFLAGS += $(LIBUNWIND_LDFLAGS)
731  EXTLIBS += $(EXTLIBS_LIBUNWIND)
732endif
733
734ifneq ($(NO_LIBTRACEEVENT),1)
735  ifeq ($(NO_SYSCALL_TABLE),0)
736    $(call detected,CONFIG_TRACE)
737  else
738    ifndef NO_LIBAUDIT
739      $(call feature_check,libaudit)
740      ifneq ($(feature-libaudit), 1)
741        msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
742        NO_LIBAUDIT := 1
743      else
744        CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
745        EXTLIBS += -laudit
746        $(call detected,CONFIG_TRACE)
747      endif
748    endif
749  endif
750endif
751
752ifndef NO_LIBCRYPTO
753  ifneq ($(feature-libcrypto), 1)
754    msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
755    NO_LIBCRYPTO := 1
756  else
757    CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
758    EXTLIBS += -lcrypto
759    $(call detected,CONFIG_CRYPTO)
760  endif
761endif
762
763ifdef NO_NEWT
764  NO_SLANG=1
765endif
766
767ifndef NO_SLANG
768  ifneq ($(feature-libslang), 1)
769    ifneq ($(feature-libslang-include-subdir), 1)
770      msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
771      NO_SLANG := 1
772    else
773      CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
774    endif
775  endif
776  ifndef NO_SLANG
777    # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
778    CFLAGS += -DHAVE_SLANG_SUPPORT
779    EXTLIBS += -lslang
780    $(call detected,CONFIG_SLANG)
781  endif
782endif
783
784ifdef GTK2
785  FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
786  $(call feature_check,gtk2)
787  ifneq ($(feature-gtk2), 1)
788    msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
789    NO_GTK2 := 1
790  else
791    $(call feature_check,gtk2-infobar)
792    ifeq ($(feature-gtk2-infobar), 1)
793      GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
794    endif
795    CFLAGS += -DHAVE_GTK2_SUPPORT
796    GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
797    GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
798    EXTLIBS += -ldl
799  endif
800endif
801
802ifdef NO_LIBPERL
803  CFLAGS += -DNO_LIBPERL
804else
805  PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
806  PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
807  PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
808  PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
809  PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
810  PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
811  PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
812  FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
813
814  ifneq ($(feature-libperl), 1)
815    CFLAGS += -DNO_LIBPERL
816    NO_LIBPERL := 1
817    msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
818  else
819    LDFLAGS += $(PERL_EMBED_LDFLAGS)
820    EXTLIBS += $(PERL_EMBED_LIBADD)
821    CFLAGS += -DHAVE_LIBPERL_SUPPORT
822    ifeq ($(CC_NO_CLANG), 0)
823      CFLAGS += -Wno-compound-token-split-by-macro
824    endif
825    $(call detected,CONFIG_LIBPERL)
826  endif
827endif
828
829ifeq ($(feature-timerfd), 1)
830  CFLAGS += -DHAVE_TIMERFD_SUPPORT
831else
832  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
833endif
834
835disable-python = $(eval $(disable-python_code))
836define disable-python_code
837  CFLAGS += -DNO_LIBPYTHON
838  $(warning $1)
839  NO_LIBPYTHON := 1
840endef
841
842PYTHON_EXTENSION_SUFFIX := '.so'
843ifdef NO_LIBPYTHON
844  $(call disable-python,Python support disabled by user)
845else
846
847  ifndef PYTHON
848    $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
849  else
850    PYTHON_WORD := $(call shell-wordify,$(PYTHON))
851
852    ifndef PYTHON_CONFIG
853      $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
854    else
855
856      ifneq ($(feature-libpython), 1)
857        $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
858      else
859         LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
860         EXTLIBS += $(PYTHON_EMBED_LIBADD)
861         PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
862         ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
863           PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
864           LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
865	 else
866           msg := $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent);
867         endif
868         CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
869         $(call detected,CONFIG_LIBPYTHON)
870      endif
871    endif
872  endif
873endif
874
875ifneq ($(NO_JEVENTS),1)
876  ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
877    NO_JEVENTS := 1
878  endif
879endif
880ifneq ($(NO_JEVENTS),1)
881  NO_JEVENTS := 0
882  ifndef PYTHON
883    $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
884  else
885    # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
886    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)
887    ifneq ($(JEVENTS_PYTHON_GOOD), 1)
888      $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
889    endif
890  endif
891endif
892
893ifdef BUILD_NONDISTRO
894  ifeq ($(feature-libbfd), 1)
895    EXTLIBS += -lbfd -lopcodes
896  else
897    # we are on a system that requires -liberty and (maybe) -lz
898    # to link against -lbfd; test each case individually here
899
900    # call all detections now so we get correct
901    # status in VF output
902    $(call feature_check,libbfd-liberty)
903    $(call feature_check,libbfd-liberty-z)
904
905    ifeq ($(feature-libbfd-liberty), 1)
906      EXTLIBS += -lbfd -lopcodes -liberty
907    else
908      ifeq ($(feature-libbfd-liberty-z), 1)
909        EXTLIBS += -lbfd -lopcodes -liberty -lz
910      endif
911    endif
912    $(call feature_check,disassembler-four-args)
913    $(call feature_check,disassembler-init-styled)
914  endif
915
916  CFLAGS += -DHAVE_LIBBFD_SUPPORT
917  CXXFLAGS += -DHAVE_LIBBFD_SUPPORT
918  ifeq ($(feature-libbfd-buildid), 1)
919    CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
920  else
921    msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
922  endif
923endif
924
925ifndef NO_DEMANGLE
926  $(call feature_check,cxa-demangle)
927  ifeq ($(feature-cxa-demangle), 1)
928    EXTLIBS += -lstdc++
929    CFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
930    CXXFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
931  endif
932  ifdef BUILD_NONDISTRO
933    ifeq ($(filter -liberty,$(EXTLIBS)),)
934      $(call feature_check,cplus-demangle)
935      ifeq ($(feature-cplus-demangle), 1)
936        EXTLIBS += -liberty
937      endif
938    endif
939    ifneq ($(filter -liberty,$(EXTLIBS)),)
940      CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
941      CXXFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
942    endif
943  endif
944endif
945
946ifndef NO_ZLIB
947  ifeq ($(feature-zlib), 1)
948    CFLAGS += -DHAVE_ZLIB_SUPPORT
949    EXTLIBS += -lz
950    $(call detected,CONFIG_ZLIB)
951  else
952    NO_ZLIB := 1
953  endif
954endif
955
956ifndef NO_LZMA
957  ifeq ($(feature-lzma), 1)
958    CFLAGS += -DHAVE_LZMA_SUPPORT
959    EXTLIBS += -llzma
960    $(call detected,CONFIG_LZMA)
961  else
962    msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
963    NO_LZMA := 1
964  endif
965endif
966
967ifndef NO_LIBZSTD
968  ifeq ($(feature-libzstd), 1)
969    CFLAGS += -DHAVE_ZSTD_SUPPORT
970    CFLAGS += $(LIBZSTD_CFLAGS)
971    LDFLAGS += $(LIBZSTD_LDFLAGS)
972    EXTLIBS += -lzstd
973    $(call detected,CONFIG_ZSTD)
974  else
975    msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
976    NO_LIBZSTD := 1
977  endif
978endif
979
980ifndef NO_LIBCAP
981  ifeq ($(feature-libcap), 1)
982    CFLAGS += -DHAVE_LIBCAP_SUPPORT
983    EXTLIBS += -lcap
984    $(call detected,CONFIG_LIBCAP)
985  else
986    msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
987    NO_LIBCAP := 1
988  endif
989endif
990
991ifndef NO_BACKTRACE
992  ifeq ($(feature-backtrace), 1)
993    CFLAGS += -DHAVE_BACKTRACE_SUPPORT
994  endif
995endif
996
997ifndef NO_LIBNUMA
998  ifeq ($(feature-libnuma), 0)
999    msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
1000    NO_LIBNUMA := 1
1001  else
1002    ifeq ($(feature-numa_num_possible_cpus), 0)
1003      msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
1004      NO_LIBNUMA := 1
1005    else
1006      CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1007      EXTLIBS += -lnuma
1008      $(call detected,CONFIG_NUMA)
1009    endif
1010  endif
1011endif
1012
1013ifdef HAVE_KVM_STAT_SUPPORT
1014    CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1015endif
1016
1017ifeq ($(feature-disassembler-four-args), 1)
1018    CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
1019endif
1020
1021ifeq ($(feature-disassembler-init-styled), 1)
1022    CFLAGS += -DDISASM_INIT_STYLED
1023endif
1024
1025ifeq (${IS_64_BIT}, 1)
1026  ifndef NO_PERF_READ_VDSO32
1027    $(call feature_check,compile-32)
1028    ifeq ($(feature-compile-32), 1)
1029      CFLAGS += -DHAVE_PERF_READ_VDSO32
1030    else
1031      NO_PERF_READ_VDSO32 := 1
1032    endif
1033  endif
1034  ifneq ($(SRCARCH), x86)
1035    NO_PERF_READ_VDSOX32 := 1
1036  endif
1037  ifndef NO_PERF_READ_VDSOX32
1038    $(call feature_check,compile-x32)
1039    ifeq ($(feature-compile-x32), 1)
1040      CFLAGS += -DHAVE_PERF_READ_VDSOX32
1041    else
1042      NO_PERF_READ_VDSOX32 := 1
1043    endif
1044  endif
1045else
1046  NO_PERF_READ_VDSO32 := 1
1047  NO_PERF_READ_VDSOX32 := 1
1048endif
1049
1050ifndef NO_LIBBABELTRACE
1051  $(call feature_check,libbabeltrace)
1052  ifeq ($(feature-libbabeltrace), 1)
1053    CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1054    LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1055    EXTLIBS += -lbabeltrace-ctf
1056    $(call detected,CONFIG_LIBBABELTRACE)
1057  else
1058    msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
1059  endif
1060endif
1061
1062ifndef NO_AUXTRACE
1063  ifeq ($(SRCARCH),x86)
1064    ifeq ($(feature-get_cpuid), 0)
1065      msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
1066      NO_AUXTRACE := 1
1067    endif
1068  endif
1069  ifndef NO_AUXTRACE
1070    $(call detected,CONFIG_AUXTRACE)
1071    CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1072    ifeq ($(feature-reallocarray), 0)
1073      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
1074    endif
1075  endif
1076endif
1077
1078ifndef NO_JVMTI
1079  ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1080    JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1081  else
1082    ifneq (,$(wildcard /usr/sbin/alternatives))
1083      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1084    endif
1085  endif
1086  ifndef JDIR
1087    $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1088    NO_JVMTI := 1
1089  endif
1090endif
1091
1092ifndef NO_JVMTI
1093  FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1094  $(call feature_check,jvmti)
1095  ifeq ($(feature-jvmti), 1)
1096    $(call detected_var,JDIR)
1097    ifndef NO_JVMTI_CMLR
1098      FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1099      $(call feature_check,jvmti-cmlr)
1100      ifeq ($(feature-jvmti-cmlr), 1)
1101        CFLAGS += -DHAVE_JVMTI_CMLR
1102      endif
1103    endif # NO_JVMTI_CMLR
1104  else
1105    $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1106    NO_JVMTI := 1
1107  endif
1108endif
1109
1110USE_CXX = 0
1111USE_CLANGLLVM = 0
1112ifdef LIBCLANGLLVM
1113  $(call feature_check,cxx)
1114  ifneq ($(feature-cxx), 1)
1115    msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
1116  else
1117    $(call feature_check,llvm)
1118    $(call feature_check,llvm-version)
1119    ifneq ($(feature-llvm), 1)
1120      msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
1121    else
1122      $(call feature_check,clang)
1123      ifneq ($(feature-clang), 1)
1124        msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
1125      else
1126        CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
1127        CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
1128        $(call detected,CONFIG_CXX)
1129        $(call detected,CONFIG_CLANGLLVM)
1130	USE_CXX = 1
1131	USE_LLVM = 1
1132	USE_CLANG = 1
1133        ifneq ($(feature-llvm-version),1)
1134          msg := $(warning This version of LLVM is not tested. May cause build errors)
1135        endif
1136      endif
1137    endif
1138  endif
1139endif
1140
1141ifndef NO_LIBPFM4
1142  $(call feature_check,libpfm4)
1143  ifeq ($(feature-libpfm4), 1)
1144    CFLAGS += -DHAVE_LIBPFM
1145    EXTLIBS += -lpfm
1146    ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1147    $(call detected,CONFIG_LIBPFM4)
1148  else
1149    msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
1150  endif
1151endif
1152
1153# libtraceevent is a recommended dependency picked up from the system.
1154ifneq ($(NO_LIBTRACEEVENT),1)
1155  $(call feature_check,libtraceevent)
1156  ifeq ($(feature-libtraceevent), 1)
1157    CFLAGS += -DHAVE_LIBTRACEEVENT
1158    EXTLIBS += -ltraceevent
1159    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
1160    LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1161    LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1162    LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1163    LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1164    CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1165    $(call detected,CONFIG_LIBTRACEEVENT)
1166  else
1167    dummy := $(warning Warning: libtraceevent is missing limiting functionality, please install libtraceevent-dev/libtraceevent-devel)
1168  endif
1169
1170  $(call feature_check,libtracefs)
1171  ifeq ($(feature-libtracefs), 1)
1172    EXTLIBS += -ltracefs
1173    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
1174    LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1175    LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1176    LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1177    LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1178    CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1179  endif
1180endif
1181
1182# Among the variables below, these:
1183#   perfexecdir
1184#   libbpf_include_dir
1185#   perf_examples_dir
1186#   template_dir
1187#   mandir
1188#   infodir
1189#   htmldir
1190#   ETC_PERFCONFIG (but not sysconfdir)
1191# can be specified as a relative path some/where/else;
1192# this is interpreted as relative to $(prefix) and "perf" at
1193# runtime figures out where they are based on the path to the executable.
1194# This can help installing the suite in a relocatable way.
1195
1196# Make the path relative to DESTDIR, not to prefix
1197ifndef DESTDIR
1198prefix ?= $(HOME)
1199endif
1200bindir_relative = bin
1201bindir = $(abspath $(prefix)/$(bindir_relative))
1202includedir_relative = include
1203includedir = $(abspath $(prefix)/$(includedir_relative))
1204mandir = share/man
1205infodir = share/info
1206perfexecdir = libexec/perf-core
1207# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
1208libbpf_include_dir = /usr/include
1209perf_examples_dir = lib/perf/examples
1210sharedir = $(prefix)/share
1211template_dir = share/perf-core/templates
1212STRACE_GROUPS_DIR = share/perf-core/strace/groups
1213htmldir = share/doc/perf-doc
1214tipdir = share/doc/perf-tip
1215srcdir = $(srctree)/tools/perf
1216ifeq ($(prefix),/usr)
1217sysconfdir = /etc
1218ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1219else
1220sysconfdir = $(prefix)/etc
1221ETC_PERFCONFIG = etc/perfconfig
1222endif
1223ifndef lib
1224ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1225lib = lib64
1226else
1227lib = lib
1228endif
1229endif # lib
1230libdir = $(prefix)/$(lib)
1231
1232# Shell quote (do not use $(call) to accommodate ancient setups);
1233ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1234STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1235DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1236bindir_SQ = $(subst ','\'',$(bindir))
1237includedir_SQ = $(subst ','\'',$(includedir))
1238mandir_SQ = $(subst ','\'',$(mandir))
1239infodir_SQ = $(subst ','\'',$(infodir))
1240perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1241libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
1242perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1243template_dir_SQ = $(subst ','\'',$(template_dir))
1244htmldir_SQ = $(subst ','\'',$(htmldir))
1245tipdir_SQ = $(subst ','\'',$(tipdir))
1246prefix_SQ = $(subst ','\'',$(prefix))
1247sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1248libdir_SQ = $(subst ','\'',$(libdir))
1249srcdir_SQ = $(subst ','\'',$(srcdir))
1250
1251ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1252perfexec_instdir = $(perfexecdir)
1253perf_include_instdir = $(libbpf_include_dir)
1254perf_examples_instdir = $(perf_examples_dir)
1255STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1256tip_instdir = $(tipdir)
1257else
1258perfexec_instdir = $(prefix)/$(perfexecdir)
1259perf_include_instdir = $(prefix)/$(libbpf_include_dir)
1260perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1261STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1262tip_instdir = $(prefix)/$(tipdir)
1263endif
1264perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1265perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1266perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1267STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1268tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1269
1270export perfexec_instdir_SQ
1271
1272print_var = $(eval $(print_var_code)) $(info $(MSG))
1273define print_var_code
1274    MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
1275endef
1276
1277ifeq ($(feature_display),1)
1278  $(call feature_display_entries)
1279endif
1280
1281ifeq ($(VF),1)
1282  # Display EXTRA features which are detected manualy
1283  # from here with feature_check call and thus cannot
1284  # be partof global state output.
1285  $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
1286  $(call print_var,prefix)
1287  $(call print_var,bindir)
1288  $(call print_var,libdir)
1289  $(call print_var,sysconfdir)
1290  $(call print_var,LIBUNWIND_DIR)
1291  $(call print_var,LIBDW_DIR)
1292  $(call print_var,JDIR)
1293
1294  ifeq ($(dwarf-post-unwind),1)
1295    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
1296  endif
1297endif
1298
1299$(info )
1300
1301$(call detected_var,bindir_SQ)
1302$(call detected_var,PYTHON_WORD)
1303ifneq ($(OUTPUT),)
1304$(call detected_var,OUTPUT)
1305endif
1306$(call detected_var,htmldir_SQ)
1307$(call detected_var,infodir_SQ)
1308$(call detected_var,mandir_SQ)
1309$(call detected_var,ETC_PERFCONFIG_SQ)
1310$(call detected_var,STRACE_GROUPS_DIR_SQ)
1311$(call detected_var,prefix_SQ)
1312$(call detected_var,perfexecdir_SQ)
1313$(call detected_var,libbpf_include_dir_SQ)
1314$(call detected_var,perf_examples_dir_SQ)
1315$(call detected_var,tipdir_SQ)
1316$(call detected_var,srcdir_SQ)
1317$(call detected_var,LIBDIR)
1318$(call detected_var,GTK_CFLAGS)
1319$(call detected_var,PERL_EMBED_CCOPTS)
1320$(call detected_var,PYTHON_EMBED_CCOPTS)
1321ifneq ($(BISON_FILE_PREFIX_MAP),)
1322$(call detected_var,BISON_FILE_PREFIX_MAP)
1323endif
1324
1325# re-generate FEATURE-DUMP as we may have called feature_check, found out
1326# extra libraries to add to LDFLAGS of some other test and then redo those
1327# tests.
1328$(shell rm -f $(FEATURE_DUMP_FILENAME))
1329$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
1330