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
31CFLAGS += -I$(OUTPUT)arch/$(SRCARCH)/include/generated
32CFLAGS += -I$(OUTPUT)libperf/arch/$(SRCARCH)/include/generated/uapi
33
34# Additional ARCH settings for ppc
35ifeq ($(SRCARCH),powerpc)
36  ifndef NO_LIBUNWIND
37    LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
38  endif
39endif
40
41# Additional ARCH settings for x86
42ifeq ($(SRCARCH),x86)
43  $(call detected,CONFIG_X86)
44  ifeq (${IS_64_BIT}, 1)
45    CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT
46    ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
47    ifndef NO_LIBUNWIND
48      LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
49    endif
50    $(call detected,CONFIG_X86_64)
51  else
52    ifndef NO_LIBUNWIND
53      LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
54    endif
55  endif
56endif
57
58ifeq ($(SRCARCH),arm)
59  ifndef NO_LIBUNWIND
60    LIBUNWIND_LIBS = -lunwind -lunwind-arm
61  endif
62endif
63
64ifeq ($(SRCARCH),arm64)
65  ifndef NO_LIBUNWIND
66    LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
67  endif
68endif
69
70ifeq ($(SRCARCH),loongarch)
71  ifndef NO_LIBUNWIND
72    LIBUNWIND_LIBS = -lunwind -lunwind-loongarch64
73  endif
74endif
75
76ifeq ($(ARCH),s390)
77  CFLAGS += -fPIC
78endif
79
80ifeq ($(ARCH),mips)
81  ifndef NO_LIBUNWIND
82    LIBUNWIND_LIBS = -lunwind -lunwind-mips
83  endif
84endif
85
86# So far there's only x86 and arm libdw unwind support merged in perf.
87# Disable it on all other architectures in case libdw unwind
88# support is detected in system. Add supported architectures
89# to the check.
90ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv loongarch))
91  NO_LIBDW_DWARF_UNWIND := 1
92endif
93
94ifneq ($(LIBUNWIND),1)
95  NO_LIBUNWIND := 1
96endif
97
98ifeq ($(LIBUNWIND_LIBS),)
99  NO_LIBUNWIND := 1
100endif
101#
102# For linking with debug library, run like:
103#
104#   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
105#
106
107libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
108define libunwind_arch_set_flags_code
109  FEATURE_CHECK_CFLAGS-libunwind-$(1)  = -I$(LIBUNWIND_DIR)/include
110  FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
111endef
112
113ifdef LIBUNWIND_DIR
114  LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
115  LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
116  LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64 loongarch
117  $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
118endif
119
120ifndef NO_LIBUNWIND
121  # Set per-feature check compilation flags
122  FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
123  FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
124  FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
125  FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
126
127  FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
128  FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
129  FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
130  FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
131endif
132
133FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
134
135ifdef CSINCLUDES
136  LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
137endif
138OPENCSDLIBS := -lopencsd_c_api -lopencsd
139ifeq ($(findstring -static,${LDFLAGS}),-static)
140  OPENCSDLIBS += -lstdc++
141endif
142ifdef CSLIBS
143  LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
144endif
145FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
146FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
147
148# for linking with debug library, run like:
149# make DEBUG=1 LIBDW_DIR=/opt/libdw/
150ifdef LIBDW_DIR
151  LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
152  LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
153endif
154DWARFLIBS := -ldw
155ifeq ($(findstring -static,${LDFLAGS}),-static)
156  DWARFLIBS += -lelf -lz -llzma -lbz2
157
158  LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw).0.0
159  LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION)))
160  LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION)))
161
162  # Elfutils merged libebl.a into libdw.a starting from version 0.177,
163  # Link libebl.a only if libdw is older than this version.
164  ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0)
165    DWARFLIBS += -lebl
166  endif
167
168  # Must put -ldl after -lebl for dependency
169  DWARFLIBS += -ldl
170endif
171FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS)
172FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS)
173
174# for linking with debug library, run like:
175# make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
176ifdef LIBBABELTRACE_DIR
177  LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
178  LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
179endif
180FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
181FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
182
183# for linking with debug library, run like:
184# make DEBUG=1 LIBCAPSTONE_DIR=/opt/capstone/
185ifdef LIBCAPSTONE_DIR
186  LIBCAPSTONE_CFLAGS  := -I$(LIBCAPSTONE_DIR)/include
187  LIBCAPSTONE_LDFLAGS := -L$(LIBCAPSTONE_DIR)/
188endif
189FEATURE_CHECK_CFLAGS-libcapstone := $(LIBCAPSTONE_CFLAGS)
190FEATURE_CHECK_LDFLAGS-libcapstone := $(LIBCAPSTONE_LDFLAGS) -lcapstone
191
192ifdef LIBZSTD_DIR
193  LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
194  LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
195endif
196FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
197FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
198
199# for linking with debug library, run like:
200# make DEBUG=1 PKG_CONFIG_PATH=/opt/libtraceevent/(lib|lib64)/pkgconfig
201
202ifneq ($(NO_LIBTRACEEVENT),1)
203  ifeq ($(call get-executable,$(PKG_CONFIG)),)
204    $(error Error: $(PKG_CONFIG) needed by libtraceevent is missing on this system, please install it)
205  endif
206endif
207
208FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
209# include ARCH specific config
210-include $(src-perf)/arch/$(SRCARCH)/Makefile
211
212include $(srctree)/tools/scripts/utilities.mak
213
214ifeq ($(call get-executable,$(FLEX)),)
215  $(error Error: $(FLEX) is missing on this system, please install it)
216endif
217
218ifeq ($(call get-executable,$(BISON)),)
219  $(error Error: $(BISON) is missing on this system, please install it)
220endif
221
222ifneq ($(OUTPUT),)
223  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
224    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
225  endif
226endif
227
228# Treat warnings as errors unless directed not to
229ifneq ($(WERROR),0)
230  CORE_CFLAGS += -Werror
231  CXXFLAGS += -Werror
232  HOSTCFLAGS += -Werror
233endif
234
235ifndef DEBUG
236  DEBUG := 0
237endif
238
239ifeq ($(DEBUG),0)
240CORE_CFLAGS += -DNDEBUG=1
241CORE_CFLAGS += -O3
242else
243  CORE_CFLAGS += -g
244  CXXFLAGS += -g
245endif
246
247ifdef PARSER_DEBUG
248  PARSER_DEBUG_BISON := -t
249  PARSER_DEBUG_FLEX  := -d
250  CFLAGS             += -DPARSER_DEBUG
251  $(call detected_var,PARSER_DEBUG_BISON)
252  $(call detected_var,PARSER_DEBUG_FLEX)
253endif
254
255ifdef LTO
256  CORE_CFLAGS += -flto
257  CXXFLAGS += -flto
258endif
259
260# Try different combinations to accommodate systems that only have
261# python[2][3]-config in weird combinations in the following order of
262# priority from lowest to highest:
263#   * python2-config as per pep-0394.
264#   * python-config
265#   * python3-config
266#   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
267#
268PYTHON_AUTO := python-config
269PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
270PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
271PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
272
273# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
274# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
275ifdef PYTHON
276  ifndef PYTHON_CONFIG
277    PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
278    PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
279                          $(call $(error $(PYTHON)-config not found)))
280  endif
281endif
282
283# Select either auto detected python and python-config or use user supplied values if they are
284# defined. get-executable-or-default fails with an error if the first argument is supplied but
285# doesn't exist.
286override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
287override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
288
289grep-libs  = $(filter -l%,$(1))
290strip-libs  = $(filter-out -l%,$(1))
291
292PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
293
294# Python 3.8 changed the output of `python-config --ldflags` to not include the
295# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
296# libpython fails if that flag is not included in LDFLAGS
297ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
298  PYTHON_CONFIG_LDFLAGS := --ldflags --embed
299else
300  PYTHON_CONFIG_LDFLAGS := --ldflags
301endif
302
303ifdef PYTHON_CONFIG
304  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
305  # Update the python flags for cross compilation
306  ifdef CROSS_COMPILE
307    PYTHON_NATIVE := $(shell echo $(PYTHON_EMBED_LDOPTS) | sed 's/\(-L.*\/\)\(.*-linux-gnu\).*/\2/')
308    PYTHON_EMBED_LDOPTS := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EMBED_LDOPTS))
309  endif
310  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
311  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
312  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
313  FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
314  ifeq ($(CC_NO_CLANG), 0)
315    PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
316  endif
317endif
318
319FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
320FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
321
322FEATURE_CHECK_LDFLAGS-libaio = -lrt
323
324FEATURE_CHECK_LDFLAGS-disassembler-four-args = -lbfd -lopcodes -ldl
325FEATURE_CHECK_LDFLAGS-disassembler-init-styled = -lbfd -lopcodes -ldl
326
327CORE_CFLAGS += -fno-omit-frame-pointer
328CORE_CFLAGS += -Wall
329CORE_CFLAGS += -Wextra
330CORE_CFLAGS += -std=gnu11
331
332CXXFLAGS += -std=gnu++17 -fno-exceptions -fno-rtti
333CXXFLAGS += -Wall
334CXXFLAGS += -Wextra
335CXXFLAGS += -fno-omit-frame-pointer
336
337HOSTCFLAGS += -Wall
338HOSTCFLAGS += -Wextra
339
340# Enforce a non-executable stack, as we may regress (again) in the future by
341# adding assembler files missing the .GNU-stack linker note.
342LDFLAGS += -Wl,-z,noexecstack
343
344EXTLIBS = -lpthread -lrt -lm -ldl
345
346ifneq ($(TCMALLOC),)
347  CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
348  EXTLIBS += -ltcmalloc
349endif
350
351ifeq ($(FEATURES_DUMP),)
352# We will display at the end of this Makefile.config, using $(call feature_display_entries)
353# As we may retry some feature detection here, see the disassembler-four-args case, for instance
354  FEATURE_DISPLAY_DEFERRED := 1
355include $(srctree)/tools/build/Makefile.feature
356else
357include $(FEATURES_DUMP)
358endif
359
360ifeq ($(feature-stackprotector-all), 1)
361  CORE_CFLAGS += -fstack-protector-all
362endif
363
364ifeq ($(DEBUG),0)
365  ifeq ($(feature-fortify-source), 1)
366    CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
367  endif
368endif
369
370INC_FLAGS += -I$(src-perf)/util/include
371INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
372INC_FLAGS += -I$(srctree)/tools/include/
373INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
374INC_FLAGS += -I$(srctree)/tools/include/uapi
375INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
376INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
377
378# $(obj-perf)      for generated common-cmds.h
379# $(obj-perf)/util for generated bison/flex headers
380ifneq ($(OUTPUT),)
381INC_FLAGS += -I$(obj-perf)/util
382INC_FLAGS += -I$(obj-perf)
383endif
384
385INC_FLAGS += -I$(src-perf)/util
386INC_FLAGS += -I$(src-perf)
387
388CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
389
390CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
391CXXFLAGS += $(INC_FLAGS)
392
393LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
394
395ifeq ($(feature-pthread-attr-setaffinity-np), 1)
396  CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
397endif
398
399ifeq ($(feature-pthread-barrier), 1)
400  CFLAGS += -DHAVE_PTHREAD_BARRIER
401endif
402
403ifndef NO_BIONIC
404  $(call feature_check,bionic)
405  ifeq ($(feature-bionic), 1)
406    BIONIC := 1
407    CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
408    CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
409    EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
410    EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
411  endif
412endif
413
414ifeq ($(feature-eventfd), 1)
415  CFLAGS += -DHAVE_EVENTFD_SUPPORT
416endif
417
418ifeq ($(feature-get_current_dir_name), 1)
419  CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
420endif
421
422ifeq ($(feature-gettid), 1)
423  CFLAGS += -DHAVE_GETTID
424endif
425
426ifeq ($(feature-file-handle), 1)
427  CFLAGS += -DHAVE_FILE_HANDLE
428endif
429
430ifdef NO_LIBELF
431  NO_LIBDW := 1
432  NO_LIBUNWIND := 1
433  NO_LIBDW_DWARF_UNWIND := 1
434  NO_LIBBPF := 1
435  NO_JVMTI := 1
436else
437  ifeq ($(feature-libelf), 0)
438    ifeq ($(feature-glibc), 1)
439      LIBC_SUPPORT := 1
440    endif
441    ifeq ($(BIONIC),1)
442      LIBC_SUPPORT := 1
443    endif
444    ifeq ($(LIBC_SUPPORT),1)
445      $(error ERROR: No libelf found. Disables 'probe' tool, jvmti and BPF support. Please install libelf-dev, libelf-devel, elfutils-libelf-devel or build with NO_LIBELF=1.)
446    else
447      ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
448        ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
449          $(error No libasan found, please install libasan)
450        endif
451      endif
452
453      ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
454        ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
455          $(error No libubsan found, please install libubsan)
456        endif
457      endif
458
459      ifneq ($(filter s% -static%,$(LDFLAGS),),)
460        $(error No static glibc found, please install glibc-static)
461      else
462        $(error No gnu/libc-version.h found, please install glibc-dev[el])
463      endif
464    endif
465  else
466    ifneq ($(feature-libdw), 1)
467      ifndef NO_LIBDW
468        $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.157, disables dwarf support. Please install new elfutils-devel/libdw-dev)
469        NO_LIBDW := 1
470      endif
471    endif # Dwarf support
472  endif # libelf support
473endif # NO_LIBELF
474
475ifeq ($(feature-libaio), 1)
476  ifndef NO_AIO
477    CFLAGS += -DHAVE_AIO_SUPPORT
478  endif
479endif
480
481ifdef NO_LIBDW
482  NO_LIBDW_DWARF_UNWIND := 1
483endif
484
485ifeq ($(feature-scandirat), 1)
486  # Ignore having scandirat with memory sanitizer that lacks an interceptor.
487  ifeq ($(filter s% -fsanitize=memory%,$(EXTRA_CFLAGS),),)
488    CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
489  endif
490endif
491
492ifeq ($(feature-sched_getcpu), 1)
493  CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
494endif
495
496ifeq ($(feature-setns), 1)
497  CFLAGS += -DHAVE_SETNS_SUPPORT
498  $(call detected,CONFIG_SETNS)
499endif
500
501ifeq ($(feature-reallocarray), 0)
502  CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
503endif
504
505ifdef CORESIGHT
506  $(call feature_check,libopencsd)
507  ifeq ($(feature-libopencsd), 1)
508    CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
509    LDFLAGS += $(LIBOPENCSD_LDFLAGS)
510    EXTLIBS += $(OPENCSDLIBS)
511    $(call detected,CONFIG_LIBOPENCSD)
512    ifdef CSTRACE_RAW
513      CFLAGS += -DCS_DEBUG_RAW
514      ifeq (${CSTRACE_RAW}, packed)
515        CFLAGS += -DCS_RAW_PACKED
516      endif
517    endif
518  else
519    $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
520  endif
521endif
522
523ifndef NO_ZLIB
524  ifeq ($(feature-zlib), 1)
525    CFLAGS += -DHAVE_ZLIB_SUPPORT
526    EXTLIBS += -lz
527    $(call detected,CONFIG_ZLIB)
528  else
529    NO_ZLIB := 1
530  endif
531endif
532
533ifndef NO_LIBELF
534  CFLAGS += -DHAVE_LIBELF_SUPPORT
535  EXTLIBS += -lelf
536  $(call detected,CONFIG_LIBELF)
537
538  ifeq ($(feature-libelf-getphdrnum), 1)
539    CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
540  endif
541
542  ifeq ($(feature-libelf-gelf_getnote), 1)
543    CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
544  else
545    $(warning gelf_getnote() not found on libelf, SDT support disabled)
546  endif
547
548  ifeq ($(feature-libelf-getshdrstrndx), 1)
549    CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
550  endif
551
552  ifeq ($(feature-libelf-zstd), 1)
553    ifdef NO_LIBZSTD
554      $(error Error: libzstd is required by libelf, please do not set NO_LIBZSTD)
555    endif
556  endif
557
558  ifndef NO_LIBDEBUGINFOD
559    $(call feature_check,libdebuginfod)
560    ifeq ($(feature-libdebuginfod), 1)
561      CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
562      EXTLIBS += -ldebuginfod
563    endif
564  endif
565
566  ifndef NO_LIBDW
567    CFLAGS += -DHAVE_LIBDW_SUPPORT $(LIBDW_CFLAGS)
568    LDFLAGS += $(LIBDW_LDFLAGS)
569    EXTLIBS += ${DWARFLIBS}
570    $(call detected,CONFIG_LIBDW)
571  endif # NO_LIBDW
572
573  ifndef NO_LIBBPF
574    ifeq ($(feature-bpf), 1)
575      # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
576      $(call feature_check,libbpf)
577
578      ifdef LIBBPF_DYNAMIC
579        ifeq ($(feature-libbpf), 1)
580          EXTLIBS += -lbpf
581          CFLAGS += -DHAVE_LIBBPF_SUPPORT
582          $(call detected,CONFIG_LIBBPF)
583          $(call detected,CONFIG_LIBBPF_DYNAMIC)
584        else
585          $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel)
586        endif
587      else
588        ifeq ($(NO_ZLIB), 1)
589          $(warning Warning: Statically building libbpf not possible as zlib is missing)
590          NO_LIBBPF := 1
591        else
592          # Libbpf will be built as a static library from tools/lib/bpf.
593          LIBBPF_STATIC := 1
594          $(call detected,CONFIG_LIBBPF)
595          CFLAGS += -DHAVE_LIBBPF_SUPPORT
596        endif
597      endif
598    endif
599  endif # NO_LIBBPF
600endif # NO_LIBELF
601
602ifndef NO_SDT
603  ifneq ($(feature-sdt), 1)
604    $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev)
605    NO_SDT := 1;
606  else
607    CFLAGS += -DHAVE_SDT_EVENT
608    $(call detected,CONFIG_SDT_EVENT)
609  endif
610endif
611
612ifdef PERF_HAVE_JITDUMP
613  ifndef NO_LIBELF
614    $(call detected,CONFIG_JITDUMP)
615    CFLAGS += -DHAVE_JITDUMP
616  endif
617endif
618
619ifeq ($(SRCARCH),powerpc)
620  ifndef NO_LIBDW
621    CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
622  endif
623endif
624
625ifndef NO_LIBUNWIND
626  have_libunwind :=
627
628  $(call feature_check,libunwind-x86)
629  ifeq ($(feature-libunwind-x86), 1)
630    $(call detected,CONFIG_LIBUNWIND_X86)
631    CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
632    LDFLAGS += -lunwind-x86
633    EXTLIBS_LIBUNWIND += -lunwind-x86
634    have_libunwind = 1
635  endif
636
637  $(call feature_check,libunwind-aarch64)
638  ifeq ($(feature-libunwind-aarch64), 1)
639    $(call detected,CONFIG_LIBUNWIND_AARCH64)
640    CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
641    LDFLAGS += -lunwind-aarch64
642    EXTLIBS_LIBUNWIND += -lunwind-aarch64
643    have_libunwind = 1
644    $(call feature_check,libunwind-debug-frame-aarch64)
645    ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
646      $(warning No debug_frame support found in libunwind-aarch64)
647      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
648    endif
649  endif
650
651  ifneq ($(feature-libunwind), 1)
652    $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR)
653    NO_LOCAL_LIBUNWIND := 1
654  else
655    have_libunwind := 1
656    $(call detected,CONFIG_LOCAL_LIBUNWIND)
657  endif
658
659  ifneq ($(have_libunwind), 1)
660    NO_LIBUNWIND := 1
661  endif
662else
663  NO_LOCAL_LIBUNWIND := 1
664endif
665
666ifndef NO_LIBBPF
667  ifneq ($(feature-bpf), 1)
668    $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
669    NO_LIBBPF := 1
670  endif
671endif
672
673ifndef BUILD_BPF_SKEL
674  # BPF skeletons control a large number of perf features, by default
675  # they are enabled.
676  BUILD_BPF_SKEL := 1
677endif
678
679ifeq ($(BUILD_BPF_SKEL),1)
680  ifeq ($(filter -DHAVE_LIBELF_SUPPORT, $(CFLAGS)),)
681    $(warning Warning: Disabled BPF skeletons as libelf is required by bpftool)
682    BUILD_BPF_SKEL := 0
683  else ifeq ($(filter -DHAVE_ZLIB_SUPPORT, $(CFLAGS)),)
684    $(warning Warning: Disabled BPF skeletons as zlib is required by bpftool)
685    BUILD_BPF_SKEL := 0
686  else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
687    $(warning Warning: Disabled BPF skeletons as libbpf is required)
688    BUILD_BPF_SKEL := 0
689  else ifeq ($(call get-executable,$(CLANG)),)
690    $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing)
691    BUILD_BPF_SKEL := 0
692  else
693    CLANG_VERSION := $(shell $(CLANG) --version | head -1 | sed 's/.*clang version \([[:digit:]]\+.[[:digit:]]\+.[[:digit:]]\+\).*/\1/g')
694    ifeq ($(call version-lt3,$(CLANG_VERSION),12.0.1),1)
695      $(warning Warning: Disabled BPF skeletons as reliable BTF generation needs at least $(CLANG) version 12.0.1)
696      BUILD_BPF_SKEL := 0
697    endif
698  endif
699  ifeq ($(BUILD_BPF_SKEL),1)
700    $(call feature_check,clang-bpf-co-re)
701    ifeq ($(feature-clang-bpf-co-re), 0)
702      $(warning Warning: Disabled BPF skeletons as clang is too old)
703      BUILD_BPF_SKEL := 0
704    endif
705  endif
706  ifeq ($(BUILD_BPF_SKEL),1)
707    $(call detected,CONFIG_PERF_BPF_SKEL)
708    CFLAGS += -DHAVE_BPF_SKEL
709  endif
710endif
711
712ifndef GEN_VMLINUX_H
713  VMLINUX_H=$(src-perf)/util/bpf_skel/vmlinux/vmlinux.h
714endif
715
716dwarf-post-unwind := 1
717dwarf-post-unwind-text := BUG
718
719# setup DWARF post unwinder
720ifdef NO_LIBUNWIND
721  ifdef NO_LIBDW_DWARF_UNWIND
722    $(warning Disabling post unwind, no support found.)
723    dwarf-post-unwind := 0
724  else
725    dwarf-post-unwind-text := libdw
726    $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
727  endif
728else
729  dwarf-post-unwind-text := libunwind
730  $(call detected,CONFIG_LIBUNWIND)
731  # Enable libunwind support by default.
732  ifndef NO_LIBDW_DWARF_UNWIND
733    NO_LIBDW_DWARF_UNWIND := 1
734  endif
735endif
736
737ifeq ($(dwarf-post-unwind),1)
738  CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
739  $(call detected,CONFIG_DWARF_UNWIND)
740endif
741
742ifndef NO_LIBUNWIND
743  ifndef NO_LOCAL_LIBUNWIND
744    ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
745      $(call feature_check,libunwind-debug-frame)
746      ifneq ($(feature-libunwind-debug-frame), 1)
747        $(warning No debug_frame support found in libunwind)
748        CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
749      endif
750    else
751      # non-ARM has no dwarf_find_debug_frame() function:
752      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
753    endif
754    EXTLIBS += $(LIBUNWIND_LIBS)
755    LDFLAGS += $(LIBUNWIND_LIBS)
756  endif
757  ifeq ($(findstring -static,${LDFLAGS}),-static)
758    # gcc -static links libgcc_eh which contans piece of libunwind
759    LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
760  endif
761  CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
762  CFLAGS  += $(LIBUNWIND_CFLAGS)
763  LDFLAGS += $(LIBUNWIND_LDFLAGS)
764  EXTLIBS += $(EXTLIBS_LIBUNWIND)
765endif
766
767ifneq ($(NO_LIBTRACEEVENT),1)
768  $(call detected,CONFIG_TRACE)
769endif
770
771ifndef NO_LIBCRYPTO
772  ifneq ($(feature-libcrypto), 1)
773    $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev)
774    NO_LIBCRYPTO := 1
775  else
776    CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
777    EXTLIBS += -lcrypto
778    $(call detected,CONFIG_CRYPTO)
779  endif
780endif
781
782ifndef NO_SLANG
783  ifneq ($(feature-libslang), 1)
784    ifneq ($(feature-libslang-include-subdir), 1)
785      $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev)
786      NO_SLANG := 1
787    else
788      CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
789    endif
790  endif
791  ifndef NO_SLANG
792    # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
793    CFLAGS += -DHAVE_SLANG_SUPPORT
794    EXTLIBS += -lslang
795    $(call detected,CONFIG_SLANG)
796  endif
797endif
798
799ifdef GTK2
800  FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
801  $(call feature_check,gtk2)
802  ifneq ($(feature-gtk2), 1)
803    $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev)
804    NO_GTK2 := 1
805  else
806    $(call feature_check,gtk2-infobar)
807    ifeq ($(feature-gtk2-infobar), 1)
808      GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
809    endif
810    CFLAGS += -DHAVE_GTK2_SUPPORT
811    GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
812    GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
813    EXTLIBS += -ldl
814  endif
815endif
816
817ifdef NO_LIBPERL
818  CFLAGS += -DNO_LIBPERL
819else
820  PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
821  PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
822  PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
823  PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
824  PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
825  PERL_EMBED_CCOPTS := $(filter-out -flto% -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
826  PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
827  FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
828
829  ifneq ($(feature-libperl), 1)
830    CFLAGS += -DNO_LIBPERL
831    NO_LIBPERL := 1
832    $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev)
833  else
834    LDFLAGS += $(PERL_EMBED_LDFLAGS)
835    EXTLIBS += $(PERL_EMBED_LIBADD)
836    CFLAGS += -DHAVE_LIBPERL_SUPPORT
837    ifeq ($(CC_NO_CLANG), 0)
838      CFLAGS += -Wno-compound-token-split-by-macro
839    endif
840    $(call detected,CONFIG_LIBPERL)
841  endif
842endif
843
844ifeq ($(feature-timerfd), 1)
845  CFLAGS += -DHAVE_TIMERFD_SUPPORT
846else
847  $(warning No timerfd support. Disables 'perf kvm stat live')
848endif
849
850disable-python = $(eval $(disable-python_code))
851define disable-python_code
852  CFLAGS += -DNO_LIBPYTHON
853  $(warning $1)
854  NO_LIBPYTHON := 1
855endef
856
857PYTHON_EXTENSION_SUFFIX := '.so'
858ifdef NO_LIBPYTHON
859  $(call disable-python,Python support disabled by user)
860else
861
862  ifndef PYTHON
863    $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
864  else
865    PYTHON_WORD := $(call shell-wordify,$(PYTHON))
866
867    ifndef PYTHON_CONFIG
868      $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
869    else
870
871      ifneq ($(feature-libpython), 1)
872        $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
873      else
874         LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
875         EXTLIBS += $(PYTHON_EMBED_LIBADD)
876         PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
877         ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
878           PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
879           ifdef CROSS_COMPILE
880             PYTHON_EXTENSION_SUFFIX := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EXTENSION_SUFFIX))
881           endif
882           LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
883	 else
884           $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent)
885         endif
886         CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
887         $(call detected,CONFIG_LIBPYTHON)
888         ifeq ($(filter -fPIC,$(CFLAGS)),)
889           # Building a shared library requires position independent code.
890           CFLAGS += -fPIC
891           CXXFLAGS += -fPIC
892         endif
893      endif
894    endif
895  endif
896endif
897
898ifneq ($(NO_JEVENTS),1)
899  ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
900    NO_JEVENTS := 1
901  endif
902endif
903ifneq ($(NO_JEVENTS),1)
904  NO_JEVENTS := 0
905  ifndef PYTHON
906    $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
907  else
908    # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
909    JEVENTS_PYTHON_GOOD := $(shell $(PYTHON) -c 'import sys;print("1" if(sys.version_info.major >= 3 and sys.version_info.minor >= 6) else "0")' 2> /dev/null)
910    ifneq ($(JEVENTS_PYTHON_GOOD), 1)
911      $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
912    endif
913  endif
914endif
915
916ifdef BUILD_NONDISTRO
917  ifeq ($(feature-libbfd), 1)
918    EXTLIBS += -lbfd -lopcodes
919  else
920    # we are on a system that requires -liberty and (maybe) -lz
921    # to link against -lbfd; test each case individually here
922
923    # call all detections now so we get correct
924    # status in VF output
925    $(call feature_check,libbfd-liberty)
926    $(call feature_check,libbfd-liberty-z)
927
928    ifeq ($(feature-libbfd-liberty), 1)
929      EXTLIBS += -lbfd -lopcodes -liberty
930      FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -ldl
931      FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -ldl
932    else
933      ifeq ($(feature-libbfd-liberty-z), 1)
934        EXTLIBS += -lbfd -lopcodes -liberty -lz
935        FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -lz -ldl
936        FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -lz -ldl
937      endif
938    endif
939    $(call feature_check,disassembler-four-args)
940    $(call feature_check,disassembler-init-styled)
941  endif
942
943  CFLAGS += -DHAVE_LIBBFD_SUPPORT
944  CXXFLAGS += -DHAVE_LIBBFD_SUPPORT
945  ifeq ($(feature-libbfd-buildid), 1)
946    CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
947  else
948    $(warning Old version of libbfd/binutils things like PE executable profiling will not be available)
949  endif
950endif
951
952ifndef NO_LIBLLVM
953  $(call feature_check,llvm-perf)
954  ifeq ($(feature-llvm-perf), 1)
955    CFLAGS += -DHAVE_LIBLLVM_SUPPORT
956    CFLAGS += $(shell $(LLVM_CONFIG) --cflags)
957    CXXFLAGS += -DHAVE_LIBLLVM_SUPPORT
958    CXXFLAGS += $(shell $(LLVM_CONFIG) --cxxflags)
959    LIBLLVM = $(shell $(LLVM_CONFIG) --libs all) $(shell $(LLVM_CONFIG) --system-libs)
960    EXTLIBS += -L$(shell $(LLVM_CONFIG) --libdir) $(LIBLLVM)
961    EXTLIBS += -lstdc++
962    $(call detected,CONFIG_LIBLLVM)
963  else
964    $(warning No libllvm 13+ found, slower source file resolution, please install llvm-devel/llvm-dev)
965    NO_LIBLLVM := 1
966  endif
967endif
968
969ifndef NO_DEMANGLE
970  $(call feature_check,cxa-demangle)
971  ifeq ($(feature-cxa-demangle), 1)
972    EXTLIBS += -lstdc++
973    CFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
974    CXXFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
975    $(call detected,CONFIG_CXX_DEMANGLE)
976  endif
977  ifdef BUILD_NONDISTRO
978    ifeq ($(filter -liberty,$(EXTLIBS)),)
979      $(call feature_check,cplus-demangle)
980      ifeq ($(feature-cplus-demangle), 1)
981        EXTLIBS += -liberty
982      endif
983    endif
984    ifneq ($(filter -liberty,$(EXTLIBS)),)
985      CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
986      CXXFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
987    endif
988  endif
989endif
990
991ifndef NO_LZMA
992  ifeq ($(feature-lzma), 1)
993    CFLAGS += -DHAVE_LZMA_SUPPORT
994    EXTLIBS += -llzma
995    $(call detected,CONFIG_LZMA)
996  else
997    $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev)
998    NO_LZMA := 1
999  endif
1000endif
1001
1002ifndef NO_LIBZSTD
1003  ifeq ($(feature-libzstd), 1)
1004    CFLAGS += -DHAVE_ZSTD_SUPPORT
1005    CFLAGS += $(LIBZSTD_CFLAGS)
1006    LDFLAGS += $(LIBZSTD_LDFLAGS)
1007    EXTLIBS += -lzstd
1008    $(call detected,CONFIG_ZSTD)
1009  else
1010    $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR)
1011    NO_LIBZSTD := 1
1012  endif
1013endif
1014
1015ifndef NO_BACKTRACE
1016  ifeq ($(feature-backtrace), 1)
1017    CFLAGS += -DHAVE_BACKTRACE_SUPPORT
1018  endif
1019endif
1020
1021ifndef NO_LIBNUMA
1022  ifeq ($(feature-libnuma), 0)
1023    $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev)
1024    NO_LIBNUMA := 1
1025  else
1026    ifeq ($(feature-numa_num_possible_cpus), 0)
1027      $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8)
1028      NO_LIBNUMA := 1
1029    else
1030      CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1031      EXTLIBS += -lnuma
1032      $(call detected,CONFIG_NUMA)
1033    endif
1034  endif
1035endif
1036
1037ifdef HAVE_KVM_STAT_SUPPORT
1038    CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1039endif
1040
1041ifeq ($(feature-disassembler-four-args), 1)
1042    CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
1043endif
1044
1045ifeq ($(feature-disassembler-init-styled), 1)
1046    CFLAGS += -DDISASM_INIT_STYLED
1047endif
1048
1049ifeq (${IS_64_BIT}, 1)
1050  ifndef NO_PERF_READ_VDSO32
1051    $(call feature_check,compile-32)
1052    ifeq ($(feature-compile-32), 1)
1053      CFLAGS += -DHAVE_PERF_READ_VDSO32
1054    else
1055      NO_PERF_READ_VDSO32 := 1
1056    endif
1057  endif
1058  ifneq ($(SRCARCH), x86)
1059    NO_PERF_READ_VDSOX32 := 1
1060  endif
1061  ifndef NO_PERF_READ_VDSOX32
1062    $(call feature_check,compile-x32)
1063    ifeq ($(feature-compile-x32), 1)
1064      CFLAGS += -DHAVE_PERF_READ_VDSOX32
1065    else
1066      NO_PERF_READ_VDSOX32 := 1
1067    endif
1068  endif
1069else
1070  NO_PERF_READ_VDSO32 := 1
1071  NO_PERF_READ_VDSOX32 := 1
1072endif
1073
1074ifndef NO_LIBBABELTRACE
1075  $(call feature_check,libbabeltrace)
1076  ifeq ($(feature-libbabeltrace), 1)
1077    CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1078    LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1079    EXTLIBS += -lbabeltrace-ctf
1080    $(call detected,CONFIG_LIBBABELTRACE)
1081  else
1082    $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev)
1083  endif
1084endif
1085
1086ifndef NO_CAPSTONE
1087  $(call feature_check,libcapstone)
1088  ifeq ($(feature-libcapstone), 1)
1089    CFLAGS += -DHAVE_LIBCAPSTONE_SUPPORT $(LIBCAPSTONE_CFLAGS)
1090    LDFLAGS += $(LICAPSTONE_LDFLAGS)
1091    EXTLIBS += -lcapstone
1092    $(call detected,CONFIG_LIBCAPSTONE)
1093  else
1094    msg := $(warning No libcapstone found, disables disasm engine support for 'perf script', please install libcapstone-dev/capstone-devel);
1095  endif
1096endif
1097
1098ifndef NO_AUXTRACE
1099  ifeq ($(SRCARCH),x86)
1100    ifeq ($(feature-get_cpuid), 0)
1101      $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc)
1102      NO_AUXTRACE := 1
1103    endif
1104  endif
1105  ifndef NO_AUXTRACE
1106    $(call detected,CONFIG_AUXTRACE)
1107    CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1108  endif
1109endif
1110
1111ifdef EXTRA_TESTS
1112    $(call detected,CONFIG_EXTRA_TESTS)
1113    CFLAGS += -DHAVE_EXTRA_TESTS
1114endif
1115
1116ifndef NO_JVMTI
1117  ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1118    JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1119  else
1120    ifneq (,$(wildcard /usr/sbin/alternatives))
1121      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1122    endif
1123  endif
1124  ifndef JDIR
1125    $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1126    NO_JVMTI := 1
1127  endif
1128endif
1129
1130ifndef NO_JVMTI
1131  FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1132  $(call feature_check,jvmti)
1133  ifeq ($(feature-jvmti), 1)
1134    $(call detected_var,JDIR)
1135    ifndef NO_JVMTI_CMLR
1136      FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1137      $(call feature_check,jvmti-cmlr)
1138      ifeq ($(feature-jvmti-cmlr), 1)
1139        CFLAGS += -DHAVE_JVMTI_CMLR
1140      endif
1141    endif # NO_JVMTI_CMLR
1142  else
1143    $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1144    NO_JVMTI := 1
1145  endif
1146endif
1147
1148ifndef NO_LIBPFM4
1149  $(call feature_check,libpfm4)
1150  ifeq ($(feature-libpfm4), 1)
1151    CFLAGS += -DHAVE_LIBPFM
1152    EXTLIBS += -lpfm
1153    ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1154    $(call detected,CONFIG_LIBPFM4)
1155  else
1156    $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev)
1157  endif
1158endif
1159
1160# libtraceevent is a recommended dependency picked up from the system.
1161ifneq ($(NO_LIBTRACEEVENT),1)
1162  ifeq ($(feature-libtraceevent), 1)
1163    CFLAGS += -DHAVE_LIBTRACEEVENT $(shell $(PKG_CONFIG) --cflags libtraceevent)
1164    LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtraceevent)
1165    EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtraceevent)
1166    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent).0.0
1167    LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1168    LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1169    LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1170    LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1171    CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1172    $(call detected,CONFIG_LIBTRACEEVENT)
1173  else
1174    $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel and/or set LIBTRACEEVENT_DIR or build with NO_LIBTRACEEVENT=1)
1175  endif
1176
1177  ifeq ($(feature-libtracefs), 1)
1178    CFLAGS +=  $(shell $(PKG_CONFIG) --cflags libtracefs)
1179    LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtracefs)
1180    EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtracefs)
1181    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs).0.0
1182    LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1183    LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1184    LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1185    LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1186    CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1187  else
1188    $(warning libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
1189  endif
1190endif
1191
1192# Among the variables below, these:
1193#   perfexecdir
1194#   libbpf_include_dir
1195#   perf_examples_dir
1196#   template_dir
1197#   mandir
1198#   infodir
1199#   htmldir
1200#   ETC_PERFCONFIG (but not sysconfdir)
1201# can be specified as a relative path some/where/else;
1202# this is interpreted as relative to $(prefix) and "perf" at
1203# runtime figures out where they are based on the path to the executable.
1204# This can help installing the suite in a relocatable way.
1205
1206# Make the path relative to DESTDIR, not to prefix
1207ifndef DESTDIR
1208prefix ?= $(HOME)
1209endif
1210bindir_relative = bin
1211bindir = $(abspath $(prefix)/$(bindir_relative))
1212includedir_relative = include
1213includedir = $(abspath $(prefix)/$(includedir_relative))
1214mandir = share/man
1215infodir = share/info
1216perfexecdir = libexec/perf-core
1217# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
1218libbpf_include_dir = /usr/include
1219perf_examples_dir = lib/perf/examples
1220sharedir = $(prefix)/share
1221template_dir = share/perf-core/templates
1222STRACE_GROUPS_DIR = share/perf-core/strace/groups
1223htmldir = share/doc/perf-doc
1224tipdir = share/doc/perf-tip
1225srcdir = $(srctree)/tools/perf
1226ifeq ($(prefix),/usr)
1227sysconfdir = /etc
1228ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1229else
1230sysconfdir = $(prefix)/etc
1231ETC_PERFCONFIG = etc/perfconfig
1232endif
1233ifndef lib
1234ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1235lib = lib64
1236else
1237lib = lib
1238endif
1239endif # lib
1240libdir = $(prefix)/$(lib)
1241
1242# Shell quote (do not use $(call) to accommodate ancient setups);
1243ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1244STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1245DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1246bindir_SQ = $(subst ','\'',$(bindir))
1247includedir_SQ = $(subst ','\'',$(includedir))
1248mandir_SQ = $(subst ','\'',$(mandir))
1249infodir_SQ = $(subst ','\'',$(infodir))
1250perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1251libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
1252perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1253template_dir_SQ = $(subst ','\'',$(template_dir))
1254htmldir_SQ = $(subst ','\'',$(htmldir))
1255tipdir_SQ = $(subst ','\'',$(tipdir))
1256prefix_SQ = $(subst ','\'',$(prefix))
1257sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1258libdir_SQ = $(subst ','\'',$(libdir))
1259srcdir_SQ = $(subst ','\'',$(srcdir))
1260
1261ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1262perfexec_instdir = $(perfexecdir)
1263perf_include_instdir = $(libbpf_include_dir)
1264perf_examples_instdir = $(perf_examples_dir)
1265STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1266tip_instdir = $(tipdir)
1267else
1268perfexec_instdir = $(prefix)/$(perfexecdir)
1269perf_include_instdir = $(prefix)/$(libbpf_include_dir)
1270perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1271STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1272tip_instdir = $(prefix)/$(tipdir)
1273endif
1274perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1275perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1276perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1277STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1278tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1279
1280export perfexec_instdir_SQ
1281
1282print_var = $(eval $(print_var_code)) $(info $(MSG))
1283define print_var_code
1284    MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
1285endef
1286
1287ifeq ($(feature_display),1)
1288  $(call feature_display_entries)
1289endif
1290
1291ifeq ($(VF),1)
1292  # Display EXTRA features which are detected manualy
1293  # from here with feature_check call and thus cannot
1294  # be partof global state output.
1295  $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
1296  $(call print_var,prefix)
1297  $(call print_var,bindir)
1298  $(call print_var,libdir)
1299  $(call print_var,sysconfdir)
1300  $(call print_var,LIBUNWIND_DIR)
1301  $(call print_var,LIBDW_DIR)
1302  $(call print_var,JDIR)
1303
1304  ifeq ($(dwarf-post-unwind),1)
1305    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
1306  endif
1307endif
1308
1309$(info )
1310
1311$(call detected_var,bindir_SQ)
1312$(call detected_var,PYTHON_WORD)
1313ifneq ($(OUTPUT),)
1314$(call detected_var,OUTPUT)
1315endif
1316$(call detected_var,htmldir_SQ)
1317$(call detected_var,infodir_SQ)
1318$(call detected_var,mandir_SQ)
1319$(call detected_var,ETC_PERFCONFIG_SQ)
1320$(call detected_var,STRACE_GROUPS_DIR_SQ)
1321$(call detected_var,prefix_SQ)
1322$(call detected_var,perfexecdir_SQ)
1323$(call detected_var,libbpf_include_dir_SQ)
1324$(call detected_var,perf_examples_dir_SQ)
1325$(call detected_var,tipdir_SQ)
1326$(call detected_var,srcdir_SQ)
1327$(call detected_var,LIBDIR)
1328$(call detected_var,GTK_CFLAGS)
1329$(call detected_var,PERL_EMBED_CCOPTS)
1330$(call detected_var,PYTHON_EMBED_CCOPTS)
1331ifneq ($(BISON_FILE_PREFIX_MAP),)
1332$(call detected_var,BISON_FILE_PREFIX_MAP)
1333endif
1334
1335# re-generate FEATURE-DUMP as we may have called feature_check, found out
1336# extra libraries to add to LDFLAGS of some other test and then redo those
1337# tests, see the block about libbfd, disassembler-four-args, for instance.
1338$(shell rm -f $(FEATURE_DUMP_FILENAME))
1339$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
1340