tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0-only
2
3ifeq ($(src-perf),)
4src-perf := $(srctree)/tools/perf
5endif
6
7ifeq ($(obj-perf),)
8obj-perf := $(OUTPUT)
9endif
10
11ifneq ($(obj-perf),)
12obj-perf := $(abspath $(obj-perf))/
13endif
14
15$(shell printf "" > $(OUTPUT).config-detected)
16detected = $(shell echo "$(1)=y" >> $(OUTPUT).config-detected)
17detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
18
19CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
20HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
21
22# Enabled Wthread-safety analysis for clang builds.
23ifeq ($(CC_NO_CLANG), 0)
24 CFLAGS += -Wthread-safety
25endif
26
27include $(srctree)/tools/scripts/Makefile.arch
28
29$(call detected_var,SRCARCH)
30
31ifneq ($(NO_SYSCALL_TABLE),1)
32 NO_SYSCALL_TABLE := 1
33
34 ifeq ($(SRCARCH),x86)
35 ifeq (${IS_64_BIT}, 1)
36 NO_SYSCALL_TABLE := 0
37 endif
38 else
39 ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips loongarch))
40 NO_SYSCALL_TABLE := 0
41 endif
42 endif
43
44 ifneq ($(NO_SYSCALL_TABLE),1)
45 CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
46 endif
47endif
48
49# Additional ARCH settings for ppc
50ifeq ($(SRCARCH),powerpc)
51 CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
52 LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
53endif
54
55# Additional ARCH settings for x86
56ifeq ($(SRCARCH),x86)
57 $(call detected,CONFIG_X86)
58 ifeq (${IS_64_BIT}, 1)
59 CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
60 ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
61 LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
62 $(call detected,CONFIG_X86_64)
63 else
64 LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
65 endif
66endif
67
68ifeq ($(SRCARCH),arm)
69 LIBUNWIND_LIBS = -lunwind -lunwind-arm
70endif
71
72ifeq ($(SRCARCH),arm64)
73 CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
74 LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
75endif
76
77ifeq ($(SRCARCH),loongarch)
78 CFLAGS += -I$(OUTPUT)arch/loongarch/include/generated
79 LIBUNWIND_LIBS = -lunwind -lunwind-loongarch64
80endif
81
82ifeq ($(ARCH),s390)
83 CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
84endif
85
86ifeq ($(ARCH),mips)
87 CFLAGS += -I$(OUTPUT)arch/mips/include/generated
88 LIBUNWIND_LIBS = -lunwind -lunwind-mips
89endif
90
91# So far there's only x86 and arm libdw unwind support merged in perf.
92# Disable it on all other architectures in case libdw unwind
93# support is detected in system. Add supported architectures
94# to the check.
95ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv loongarch))
96 NO_LIBDW_DWARF_UNWIND := 1
97endif
98
99ifeq ($(LIBUNWIND_LIBS),)
100 NO_LIBUNWIND := 1
101endif
102#
103# For linking with debug library, run like:
104#
105# make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
106#
107
108libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
109define libunwind_arch_set_flags_code
110 FEATURE_CHECK_CFLAGS-libunwind-$(1) = -I$(LIBUNWIND_DIR)/include
111 FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
112endef
113
114ifdef LIBUNWIND_DIR
115 LIBUNWIND_CFLAGS = -I$(LIBUNWIND_DIR)/include
116 LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
117 LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64 loongarch
118 $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
119endif
120
121# Set per-feature check compilation flags
122FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
123FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
124FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
125FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
126
127FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
128FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
129FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
130FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
131
132FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
133
134ifdef CSINCLUDES
135 LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
136endif
137OPENCSDLIBS := -lopencsd_c_api -lopencsd
138ifeq ($(findstring -static,${LDFLAGS}),-static)
139 OPENCSDLIBS += -lstdc++
140endif
141ifdef CSLIBS
142 LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
143endif
144FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
145FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
146
147# for linking with debug library, run like:
148# make DEBUG=1 LIBDW_DIR=/opt/libdw/
149ifdef LIBDW_DIR
150 LIBDW_CFLAGS := -I$(LIBDW_DIR)/include
151 LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
152endif
153DWARFLIBS := -ldw
154ifeq ($(findstring -static,${LDFLAGS}),-static)
155 DWARFLIBS += -lelf -ldl -lz -llzma -lbz2 -lzstd
156
157 LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw)
158 LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION)))
159 LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION)))
160
161 # Elfutils merged libebl.a into libdw.a starting from version 0.177,
162 # Link libebl.a only if libdw is older than this version.
163 ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0)
164 DWARFLIBS += -lebl
165 endif
166endif
167FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
168FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
169
170# for linking with debug library, run like:
171# make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
172ifdef LIBBABELTRACE_DIR
173 LIBBABELTRACE_CFLAGS := -I$(LIBBABELTRACE_DIR)/include
174 LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
175endif
176FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
177FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
178
179# for linking with debug library, run like:
180# make DEBUG=1 LIBCAPSTONE_DIR=/opt/capstone/
181ifdef LIBCAPSTONE_DIR
182 LIBCAPSTONE_CFLAGS := -I$(LIBCAPSTONE_DIR)/include
183 LIBCAPSTONE_LDFLAGS := -L$(LIBCAPSTONE_DIR)/
184endif
185FEATURE_CHECK_CFLAGS-libcapstone := $(LIBCAPSTONE_CFLAGS)
186FEATURE_CHECK_LDFLAGS-libcapstone := $(LIBCAPSTONE_LDFLAGS) -lcapstone
187
188ifdef LIBZSTD_DIR
189 LIBZSTD_CFLAGS := -I$(LIBZSTD_DIR)/lib
190 LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
191endif
192FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
193FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
194
195# for linking with debug library, run like:
196# make DEBUG=1 PKG_CONFIG_PATH=/opt/libtraceevent/(lib|lib64)/pkgconfig
197
198ifneq ($(NO_LIBTRACEEVENT),1)
199 ifeq ($(call get-executable,$(PKG_CONFIG)),)
200 $(error Error: $(PKG_CONFIG) needed by libtraceevent is missing on this system, please install it)
201 endif
202endif
203
204FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
205# include ARCH specific config
206-include $(src-perf)/arch/$(SRCARCH)/Makefile
207
208ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
209 CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
210endif
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 ($(DEBUG),0)
240CORE_CFLAGS += -DNDEBUG=1
241ifeq ($(CC_NO_CLANG), 0)
242 CORE_CFLAGS += -O3
243else
244 CORE_CFLAGS += -O6
245endif
246else
247 CORE_CFLAGS += -g
248 CXXFLAGS += -g
249endif
250
251ifdef PARSER_DEBUG
252 PARSER_DEBUG_BISON := -t
253 PARSER_DEBUG_FLEX := -d
254 CFLAGS += -DPARSER_DEBUG
255 $(call detected_var,PARSER_DEBUG_BISON)
256 $(call detected_var,PARSER_DEBUG_FLEX)
257endif
258
259ifdef LTO
260 CORE_CFLAGS += -flto
261 CXXFLAGS += -flto
262endif
263
264# Try different combinations to accommodate systems that only have
265# python[2][3]-config in weird combinations in the following order of
266# priority from lowest to highest:
267# * python2-config as per pep-0394.
268# * python-config
269# * python3-config
270# * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
271#
272PYTHON_AUTO := python-config
273PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
274PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
275PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
276
277# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
278# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
279ifdef PYTHON
280 ifndef PYTHON_CONFIG
281 PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
282 PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
283 $(call $(error $(PYTHON)-config not found)))
284 endif
285endif
286
287# Select either auto detected python and python-config or use user supplied values if they are
288# defined. get-executable-or-default fails with an error if the first argument is supplied but
289# doesn't exist.
290override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
291override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
292
293grep-libs = $(filter -l%,$(1))
294strip-libs = $(filter-out -l%,$(1))
295
296PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
297
298# Python 3.8 changed the output of `python-config --ldflags` to not include the
299# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
300# libpython fails if that flag is not included in LDFLAGS
301ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
302 PYTHON_CONFIG_LDFLAGS := --ldflags --embed
303else
304 PYTHON_CONFIG_LDFLAGS := --ldflags
305endif
306
307ifdef PYTHON_CONFIG
308 PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
309 # Update the python flags for cross compilation
310 ifdef CROSS_COMPILE
311 PYTHON_NATIVE := $(shell echo $(PYTHON_EMBED_LDOPTS) | sed 's/\(-L.*\/\)\(.*-linux-gnu\).*/\2/')
312 PYTHON_EMBED_LDOPTS := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EMBED_LDOPTS))
313 endif
314 PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
315 PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
316 PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
317 FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
318 ifeq ($(CC_NO_CLANG), 0)
319 PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
320 endif
321endif
322
323FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
324FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
325
326FEATURE_CHECK_LDFLAGS-libaio = -lrt
327
328FEATURE_CHECK_LDFLAGS-disassembler-four-args = -lbfd -lopcodes -ldl
329FEATURE_CHECK_LDFLAGS-disassembler-init-styled = -lbfd -lopcodes -ldl
330
331CORE_CFLAGS += -fno-omit-frame-pointer
332CORE_CFLAGS += -Wall
333CORE_CFLAGS += -Wextra
334CORE_CFLAGS += -std=gnu11
335
336CXXFLAGS += -std=gnu++17 -fno-exceptions -fno-rtti
337CXXFLAGS += -Wall
338CXXFLAGS += -Wextra
339CXXFLAGS += -fno-omit-frame-pointer
340
341HOSTCFLAGS += -Wall
342HOSTCFLAGS += -Wextra
343
344# Enforce a non-executable stack, as we may regress (again) in the future by
345# adding assembler files missing the .GNU-stack linker note.
346LDFLAGS += -Wl,-z,noexecstack
347
348EXTLIBS = -lpthread -lrt -lm -ldl
349
350ifneq ($(TCMALLOC),)
351 CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
352 EXTLIBS += -ltcmalloc
353endif
354
355ifeq ($(FEATURES_DUMP),)
356# We will display at the end of this Makefile.config, using $(call feature_display_entries)
357# As we may retry some feature detection here, see the disassembler-four-args case, for instance
358 FEATURE_DISPLAY_DEFERRED := 1
359include $(srctree)/tools/build/Makefile.feature
360else
361include $(FEATURES_DUMP)
362endif
363
364ifeq ($(feature-stackprotector-all), 1)
365 CORE_CFLAGS += -fstack-protector-all
366endif
367
368ifeq ($(DEBUG),0)
369 ifeq ($(feature-fortify-source), 1)
370 CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
371 endif
372endif
373
374INC_FLAGS += -I$(src-perf)/util/include
375INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
376INC_FLAGS += -I$(srctree)/tools/include/
377INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
378INC_FLAGS += -I$(srctree)/tools/include/uapi
379INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
380INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
381
382# $(obj-perf) for generated common-cmds.h
383# $(obj-perf)/util for generated bison/flex headers
384ifneq ($(OUTPUT),)
385INC_FLAGS += -I$(obj-perf)/util
386INC_FLAGS += -I$(obj-perf)
387endif
388
389INC_FLAGS += -I$(src-perf)/util
390INC_FLAGS += -I$(src-perf)
391
392CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
393
394CFLAGS += $(CORE_CFLAGS) $(INC_FLAGS)
395CXXFLAGS += $(INC_FLAGS)
396
397LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
398
399ifeq ($(feature-pthread-attr-setaffinity-np), 1)
400 CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
401endif
402
403ifeq ($(feature-pthread-barrier), 1)
404 CFLAGS += -DHAVE_PTHREAD_BARRIER
405endif
406
407ifndef NO_BIONIC
408 $(call feature_check,bionic)
409 ifeq ($(feature-bionic), 1)
410 BIONIC := 1
411 CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
412 CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
413 EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
414 EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
415 endif
416endif
417
418ifeq ($(feature-eventfd), 1)
419 CFLAGS += -DHAVE_EVENTFD_SUPPORT
420endif
421
422ifeq ($(feature-get_current_dir_name), 1)
423 CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
424endif
425
426ifeq ($(feature-gettid), 1)
427 CFLAGS += -DHAVE_GETTID
428endif
429
430ifeq ($(feature-file-handle), 1)
431 CFLAGS += -DHAVE_FILE_HANDLE
432endif
433
434ifdef NO_LIBELF
435 NO_DWARF := 1
436 NO_LIBUNWIND := 1
437 NO_LIBDW_DWARF_UNWIND := 1
438 NO_LIBBPF := 1
439 NO_JVMTI := 1
440else
441 ifeq ($(feature-libelf), 0)
442 ifeq ($(feature-glibc), 1)
443 LIBC_SUPPORT := 1
444 endif
445 ifeq ($(BIONIC),1)
446 LIBC_SUPPORT := 1
447 endif
448 ifeq ($(LIBC_SUPPORT),1)
449 $(error ERROR: No libelf found. Disables 'probe' tool, jvmti and BPF support. Please install libelf-dev, libelf-devel, elfutils-libelf-devel or build with NO_LIBELF=1.)
450 else
451 ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
452 ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
453 $(error No libasan found, please install libasan)
454 endif
455 endif
456
457 ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
458 ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
459 $(error No libubsan found, please install libubsan)
460 endif
461 endif
462
463 ifneq ($(filter s% -static%,$(LDFLAGS),),)
464 $(error No static glibc found, please install glibc-static)
465 else
466 $(error No gnu/libc-version.h found, please install glibc-dev[el])
467 endif
468 endif
469 else
470 ifndef NO_LIBDW_DWARF_UNWIND
471 ifneq ($(feature-libdw-dwarf-unwind),1)
472 NO_LIBDW_DWARF_UNWIND := 1
473 $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR)
474 endif
475 endif
476 ifneq ($(feature-dwarf), 1)
477 ifndef NO_DWARF
478 $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev)
479 NO_DWARF := 1
480 endif
481 else
482 ifneq ($(feature-dwarf_getlocations), 1)
483 $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157)
484 else
485 CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
486 endif # dwarf_getlocations
487 ifneq ($(feature-dwarf_getcfi), 1)
488 $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.142)
489 else
490 CFLAGS += -DHAVE_DWARF_CFI_SUPPORT
491 endif # dwarf_getcfi
492 endif # Dwarf support
493 endif # libelf support
494endif # NO_LIBELF
495
496ifeq ($(feature-libaio), 1)
497 ifndef NO_AIO
498 CFLAGS += -DHAVE_AIO_SUPPORT
499 endif
500endif
501
502ifdef NO_DWARF
503 NO_LIBDW_DWARF_UNWIND := 1
504endif
505
506ifeq ($(feature-scandirat), 1)
507 # Ignore having scandirat with memory sanitizer that lacks an interceptor.
508 ifeq ($(filter s% -fsanitize=memory%,$(EXTRA_CFLAGS),),)
509 CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
510 endif
511endif
512
513ifeq ($(feature-sched_getcpu), 1)
514 CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
515endif
516
517ifeq ($(feature-setns), 1)
518 CFLAGS += -DHAVE_SETNS_SUPPORT
519 $(call detected,CONFIG_SETNS)
520endif
521
522ifdef CORESIGHT
523 $(call feature_check,libopencsd)
524 ifeq ($(feature-libopencsd), 1)
525 CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
526 ifeq ($(feature-reallocarray), 0)
527 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
528 endif
529 LDFLAGS += $(LIBOPENCSD_LDFLAGS)
530 EXTLIBS += $(OPENCSDLIBS)
531 $(call detected,CONFIG_LIBOPENCSD)
532 ifdef CSTRACE_RAW
533 CFLAGS += -DCS_DEBUG_RAW
534 ifeq (${CSTRACE_RAW}, packed)
535 CFLAGS += -DCS_RAW_PACKED
536 endif
537 endif
538 else
539 $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
540 endif
541endif
542
543ifndef NO_ZLIB
544 ifeq ($(feature-zlib), 1)
545 CFLAGS += -DHAVE_ZLIB_SUPPORT
546 EXTLIBS += -lz
547 $(call detected,CONFIG_ZLIB)
548 else
549 NO_ZLIB := 1
550 endif
551endif
552
553ifndef NO_LIBELF
554 CFLAGS += -DHAVE_LIBELF_SUPPORT
555 EXTLIBS += -lelf
556 $(call detected,CONFIG_LIBELF)
557
558 ifeq ($(feature-libelf-getphdrnum), 1)
559 CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
560 endif
561
562 ifeq ($(feature-libelf-gelf_getnote), 1)
563 CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
564 else
565 $(warning gelf_getnote() not found on libelf, SDT support disabled)
566 endif
567
568 ifeq ($(feature-libelf-getshdrstrndx), 1)
569 CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
570 endif
571
572 ifndef NO_LIBDEBUGINFOD
573 $(call feature_check,libdebuginfod)
574 ifeq ($(feature-libdebuginfod), 1)
575 CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
576 EXTLIBS += -ldebuginfod
577 endif
578 endif
579
580 ifndef NO_DWARF
581 ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
582 $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled)
583 NO_DWARF := 1
584 else
585 CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
586 LDFLAGS += $(LIBDW_LDFLAGS)
587 EXTLIBS += ${DWARFLIBS}
588 $(call detected,CONFIG_DWARF)
589 endif # PERF_HAVE_DWARF_REGS
590 endif # NO_DWARF
591
592 ifndef NO_LIBBPF
593 ifeq ($(feature-bpf), 1)
594 # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
595 $(call feature_check,libbpf)
596
597 ifdef LIBBPF_DYNAMIC
598 ifeq ($(feature-libbpf), 1)
599 EXTLIBS += -lbpf
600 CFLAGS += -DHAVE_LIBBPF_SUPPORT
601 $(call detected,CONFIG_LIBBPF)
602 $(call detected,CONFIG_LIBBPF_DYNAMIC)
603 else
604 $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel)
605 endif
606 else
607 ifeq ($(NO_ZLIB), 1)
608 $(warning Warning: Statically building libbpf not possible as zlib is missing)
609 NO_LIBBPF := 1
610 else
611 # Libbpf will be built as a static library from tools/lib/bpf.
612 LIBBPF_STATIC := 1
613 $(call detected,CONFIG_LIBBPF)
614 CFLAGS += -DHAVE_LIBBPF_SUPPORT
615 endif
616 endif
617 endif
618 endif # NO_LIBBPF
619endif # NO_LIBELF
620
621ifndef NO_SDT
622 ifneq ($(feature-sdt), 1)
623 $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev)
624 NO_SDT := 1;
625 else
626 CFLAGS += -DHAVE_SDT_EVENT
627 $(call detected,CONFIG_SDT_EVENT)
628 endif
629endif
630
631ifdef PERF_HAVE_JITDUMP
632 ifndef NO_LIBELF
633 $(call detected,CONFIG_JITDUMP)
634 CFLAGS += -DHAVE_JITDUMP
635 endif
636endif
637
638ifeq ($(SRCARCH),powerpc)
639 ifndef NO_DWARF
640 CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
641 endif
642endif
643
644ifndef NO_LIBUNWIND
645 have_libunwind :=
646
647 $(call feature_check,libunwind-x86)
648 ifeq ($(feature-libunwind-x86), 1)
649 $(call detected,CONFIG_LIBUNWIND_X86)
650 CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
651 LDFLAGS += -lunwind-x86
652 EXTLIBS_LIBUNWIND += -lunwind-x86
653 have_libunwind = 1
654 endif
655
656 $(call feature_check,libunwind-aarch64)
657 ifeq ($(feature-libunwind-aarch64), 1)
658 $(call detected,CONFIG_LIBUNWIND_AARCH64)
659 CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
660 LDFLAGS += -lunwind-aarch64
661 EXTLIBS_LIBUNWIND += -lunwind-aarch64
662 have_libunwind = 1
663 $(call feature_check,libunwind-debug-frame-aarch64)
664 ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
665 $(warning No debug_frame support found in libunwind-aarch64)
666 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
667 endif
668 endif
669
670 ifneq ($(feature-libunwind), 1)
671 $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR)
672 NO_LOCAL_LIBUNWIND := 1
673 else
674 have_libunwind := 1
675 $(call detected,CONFIG_LOCAL_LIBUNWIND)
676 endif
677
678 ifneq ($(have_libunwind), 1)
679 NO_LIBUNWIND := 1
680 endif
681else
682 NO_LOCAL_LIBUNWIND := 1
683endif
684
685ifndef NO_LIBBPF
686 ifneq ($(feature-bpf), 1)
687 $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
688 NO_LIBBPF := 1
689 endif
690endif
691
692ifndef BUILD_BPF_SKEL
693 # BPF skeletons control a large number of perf features, by default
694 # they are enabled.
695 BUILD_BPF_SKEL := 1
696endif
697
698ifeq ($(BUILD_BPF_SKEL),1)
699 ifeq ($(filter -DHAVE_LIBELF_SUPPORT, $(CFLAGS)),)
700 $(warning Warning: Disabled BPF skeletons as libelf is required by bpftool)
701 BUILD_BPF_SKEL := 0
702 else ifeq ($(filter -DHAVE_ZLIB_SUPPORT, $(CFLAGS)),)
703 $(warning Warning: Disabled BPF skeletons as zlib is required by bpftool)
704 BUILD_BPF_SKEL := 0
705 else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
706 $(warning Warning: Disabled BPF skeletons as libbpf is required)
707 BUILD_BPF_SKEL := 0
708 else ifeq ($(call get-executable,$(CLANG)),)
709 $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing)
710 BUILD_BPF_SKEL := 0
711 else
712 CLANG_VERSION := $(shell $(CLANG) --version | head -1 | sed 's/.*clang version \([[:digit:]]\+.[[:digit:]]\+.[[:digit:]]\+\).*/\1/g')
713 ifeq ($(call version-lt3,$(CLANG_VERSION),12.0.1),1)
714 $(warning Warning: Disabled BPF skeletons as reliable BTF generation needs at least $(CLANG) version 12.0.1)
715 BUILD_BPF_SKEL := 0
716 endif
717 endif
718 ifeq ($(BUILD_BPF_SKEL),1)
719 $(call feature_check,clang-bpf-co-re)
720 ifeq ($(feature-clang-bpf-co-re), 0)
721 $(warning Warning: Disabled BPF skeletons as clang is too old)
722 BUILD_BPF_SKEL := 0
723 endif
724 endif
725 ifeq ($(BUILD_BPF_SKEL),1)
726 $(call detected,CONFIG_PERF_BPF_SKEL)
727 CFLAGS += -DHAVE_BPF_SKEL
728 endif
729endif
730
731ifndef GEN_VMLINUX_H
732 VMLINUX_H=$(src-perf)/util/bpf_skel/vmlinux/vmlinux.h
733endif
734
735dwarf-post-unwind := 1
736dwarf-post-unwind-text := BUG
737
738# setup DWARF post unwinder
739ifdef NO_LIBUNWIND
740 ifdef NO_LIBDW_DWARF_UNWIND
741 $(warning Disabling post unwind, no support found.)
742 dwarf-post-unwind := 0
743 else
744 dwarf-post-unwind-text := libdw
745 $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
746 endif
747else
748 dwarf-post-unwind-text := libunwind
749 $(call detected,CONFIG_LIBUNWIND)
750 # Enable libunwind support by default.
751 ifndef NO_LIBDW_DWARF_UNWIND
752 NO_LIBDW_DWARF_UNWIND := 1
753 endif
754endif
755
756ifeq ($(dwarf-post-unwind),1)
757 CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
758 $(call detected,CONFIG_DWARF_UNWIND)
759else
760 NO_DWARF_UNWIND := 1
761endif
762
763ifndef NO_LOCAL_LIBUNWIND
764 ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
765 $(call feature_check,libunwind-debug-frame)
766 ifneq ($(feature-libunwind-debug-frame), 1)
767 $(warning No debug_frame support found in libunwind)
768 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
769 endif
770 else
771 # non-ARM has no dwarf_find_debug_frame() function:
772 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
773 endif
774 EXTLIBS += $(LIBUNWIND_LIBS)
775 LDFLAGS += $(LIBUNWIND_LIBS)
776endif
777ifeq ($(findstring -static,${LDFLAGS}),-static)
778 # gcc -static links libgcc_eh which contans piece of libunwind
779 LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
780endif
781
782ifndef NO_LIBUNWIND
783 CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
784 CFLAGS += $(LIBUNWIND_CFLAGS)
785 LDFLAGS += $(LIBUNWIND_LDFLAGS)
786 EXTLIBS += $(EXTLIBS_LIBUNWIND)
787endif
788
789ifneq ($(NO_LIBTRACEEVENT),1)
790 ifeq ($(NO_SYSCALL_TABLE),0)
791 $(call detected,CONFIG_TRACE)
792 else
793 ifndef NO_LIBAUDIT
794 $(call feature_check,libaudit)
795 ifneq ($(feature-libaudit), 1)
796 $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev)
797 NO_LIBAUDIT := 1
798 else
799 CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
800 EXTLIBS += -laudit
801 $(call detected,CONFIG_TRACE)
802 endif
803 endif
804 endif
805endif
806
807ifndef NO_LIBCRYPTO
808 ifneq ($(feature-libcrypto), 1)
809 $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev)
810 NO_LIBCRYPTO := 1
811 else
812 CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
813 EXTLIBS += -lcrypto
814 $(call detected,CONFIG_CRYPTO)
815 endif
816endif
817
818ifndef NO_SLANG
819 ifneq ($(feature-libslang), 1)
820 ifneq ($(feature-libslang-include-subdir), 1)
821 $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev)
822 NO_SLANG := 1
823 else
824 CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
825 endif
826 endif
827 ifndef NO_SLANG
828 # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
829 CFLAGS += -DHAVE_SLANG_SUPPORT
830 EXTLIBS += -lslang
831 $(call detected,CONFIG_SLANG)
832 endif
833endif
834
835ifdef GTK2
836 FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
837 $(call feature_check,gtk2)
838 ifneq ($(feature-gtk2), 1)
839 $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev)
840 NO_GTK2 := 1
841 else
842 $(call feature_check,gtk2-infobar)
843 ifeq ($(feature-gtk2-infobar), 1)
844 GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
845 endif
846 CFLAGS += -DHAVE_GTK2_SUPPORT
847 GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
848 GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
849 EXTLIBS += -ldl
850 endif
851endif
852
853ifdef NO_LIBPERL
854 CFLAGS += -DNO_LIBPERL
855else
856 PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
857 PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
858 PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
859 PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
860 PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
861 PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
862 PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
863 FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
864
865 ifneq ($(feature-libperl), 1)
866 CFLAGS += -DNO_LIBPERL
867 NO_LIBPERL := 1
868 $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev)
869 else
870 LDFLAGS += $(PERL_EMBED_LDFLAGS)
871 EXTLIBS += $(PERL_EMBED_LIBADD)
872 CFLAGS += -DHAVE_LIBPERL_SUPPORT
873 ifeq ($(CC_NO_CLANG), 0)
874 CFLAGS += -Wno-compound-token-split-by-macro
875 endif
876 $(call detected,CONFIG_LIBPERL)
877 endif
878endif
879
880ifeq ($(feature-timerfd), 1)
881 CFLAGS += -DHAVE_TIMERFD_SUPPORT
882else
883 $(warning No timerfd support. Disables 'perf kvm stat live')
884endif
885
886disable-python = $(eval $(disable-python_code))
887define disable-python_code
888 CFLAGS += -DNO_LIBPYTHON
889 $(warning $1)
890 NO_LIBPYTHON := 1
891endef
892
893PYTHON_EXTENSION_SUFFIX := '.so'
894ifdef NO_LIBPYTHON
895 $(call disable-python,Python support disabled by user)
896else
897
898 ifndef PYTHON
899 $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
900 else
901 PYTHON_WORD := $(call shell-wordify,$(PYTHON))
902
903 ifndef PYTHON_CONFIG
904 $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
905 else
906
907 ifneq ($(feature-libpython), 1)
908 $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
909 else
910 LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
911 EXTLIBS += $(PYTHON_EMBED_LIBADD)
912 PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
913 ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
914 PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
915 ifdef CROSS_COMPILE
916 PYTHON_EXTENSION_SUFFIX := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EXTENSION_SUFFIX))
917 endif
918 LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
919 else
920 $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent)
921 endif
922 CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
923 $(call detected,CONFIG_LIBPYTHON)
924 ifeq ($(filter -fPIC,$(CFLAGS)),)
925 # Building a shared library requires position independent code.
926 CFLAGS += -fPIC
927 CXXFLAGS += -fPIC
928 endif
929 endif
930 endif
931 endif
932endif
933
934ifneq ($(NO_JEVENTS),1)
935 ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
936 NO_JEVENTS := 1
937 endif
938endif
939ifneq ($(NO_JEVENTS),1)
940 NO_JEVENTS := 0
941 ifndef PYTHON
942 $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
943 else
944 # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
945 JEVENTS_PYTHON_GOOD := $(shell $(PYTHON) -c 'import sys;print("1" if(sys.version_info.major >= 3 and sys.version_info.minor >= 6) else "0")' 2> /dev/null)
946 ifneq ($(JEVENTS_PYTHON_GOOD), 1)
947 $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
948 endif
949 endif
950endif
951
952ifdef BUILD_NONDISTRO
953 ifeq ($(feature-libbfd), 1)
954 EXTLIBS += -lbfd -lopcodes
955 else
956 # we are on a system that requires -liberty and (maybe) -lz
957 # to link against -lbfd; test each case individually here
958
959 # call all detections now so we get correct
960 # status in VF output
961 $(call feature_check,libbfd-liberty)
962 $(call feature_check,libbfd-liberty-z)
963
964 ifeq ($(feature-libbfd-liberty), 1)
965 EXTLIBS += -lbfd -lopcodes -liberty
966 FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -ldl
967 FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -ldl
968 else
969 ifeq ($(feature-libbfd-liberty-z), 1)
970 EXTLIBS += -lbfd -lopcodes -liberty -lz
971 FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -lz -ldl
972 FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -lz -ldl
973 endif
974 endif
975 $(call feature_check,disassembler-four-args)
976 $(call feature_check,disassembler-init-styled)
977 endif
978
979 CFLAGS += -DHAVE_LIBBFD_SUPPORT
980 CXXFLAGS += -DHAVE_LIBBFD_SUPPORT
981 ifeq ($(feature-libbfd-buildid), 1)
982 CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
983 else
984 $(warning Old version of libbfd/binutils things like PE executable profiling will not be available)
985 endif
986endif
987
988ifndef NO_DEMANGLE
989 $(call feature_check,cxa-demangle)
990 ifeq ($(feature-cxa-demangle), 1)
991 EXTLIBS += -lstdc++
992 CFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
993 CXXFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
994 $(call detected,CONFIG_CXX_DEMANGLE)
995 endif
996 ifdef BUILD_NONDISTRO
997 ifeq ($(filter -liberty,$(EXTLIBS)),)
998 $(call feature_check,cplus-demangle)
999 ifeq ($(feature-cplus-demangle), 1)
1000 EXTLIBS += -liberty
1001 endif
1002 endif
1003 ifneq ($(filter -liberty,$(EXTLIBS)),)
1004 CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
1005 CXXFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
1006 endif
1007 endif
1008endif
1009
1010ifndef NO_LZMA
1011 ifeq ($(feature-lzma), 1)
1012 CFLAGS += -DHAVE_LZMA_SUPPORT
1013 EXTLIBS += -llzma
1014 $(call detected,CONFIG_LZMA)
1015 else
1016 $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev)
1017 NO_LZMA := 1
1018 endif
1019endif
1020
1021ifndef NO_LIBZSTD
1022 ifeq ($(feature-libzstd), 1)
1023 CFLAGS += -DHAVE_ZSTD_SUPPORT
1024 CFLAGS += $(LIBZSTD_CFLAGS)
1025 LDFLAGS += $(LIBZSTD_LDFLAGS)
1026 EXTLIBS += -lzstd
1027 $(call detected,CONFIG_ZSTD)
1028 else
1029 $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR)
1030 NO_LIBZSTD := 1
1031 endif
1032endif
1033
1034ifndef NO_LIBCAP
1035 ifeq ($(feature-libcap), 1)
1036 CFLAGS += -DHAVE_LIBCAP_SUPPORT
1037 EXTLIBS += -lcap
1038 $(call detected,CONFIG_LIBCAP)
1039 else
1040 $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev)
1041 NO_LIBCAP := 1
1042 endif
1043endif
1044
1045ifndef NO_BACKTRACE
1046 ifeq ($(feature-backtrace), 1)
1047 CFLAGS += -DHAVE_BACKTRACE_SUPPORT
1048 endif
1049endif
1050
1051ifndef NO_LIBNUMA
1052 ifeq ($(feature-libnuma), 0)
1053 $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev)
1054 NO_LIBNUMA := 1
1055 else
1056 ifeq ($(feature-numa_num_possible_cpus), 0)
1057 $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8)
1058 NO_LIBNUMA := 1
1059 else
1060 CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1061 EXTLIBS += -lnuma
1062 $(call detected,CONFIG_NUMA)
1063 endif
1064 endif
1065endif
1066
1067ifdef HAVE_KVM_STAT_SUPPORT
1068 CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1069endif
1070
1071ifeq ($(feature-disassembler-four-args), 1)
1072 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
1073endif
1074
1075ifeq ($(feature-disassembler-init-styled), 1)
1076 CFLAGS += -DDISASM_INIT_STYLED
1077endif
1078
1079ifeq (${IS_64_BIT}, 1)
1080 ifndef NO_PERF_READ_VDSO32
1081 $(call feature_check,compile-32)
1082 ifeq ($(feature-compile-32), 1)
1083 CFLAGS += -DHAVE_PERF_READ_VDSO32
1084 else
1085 NO_PERF_READ_VDSO32 := 1
1086 endif
1087 endif
1088 ifneq ($(SRCARCH), x86)
1089 NO_PERF_READ_VDSOX32 := 1
1090 endif
1091 ifndef NO_PERF_READ_VDSOX32
1092 $(call feature_check,compile-x32)
1093 ifeq ($(feature-compile-x32), 1)
1094 CFLAGS += -DHAVE_PERF_READ_VDSOX32
1095 else
1096 NO_PERF_READ_VDSOX32 := 1
1097 endif
1098 endif
1099else
1100 NO_PERF_READ_VDSO32 := 1
1101 NO_PERF_READ_VDSOX32 := 1
1102endif
1103
1104ifndef NO_LIBBABELTRACE
1105 $(call feature_check,libbabeltrace)
1106 ifeq ($(feature-libbabeltrace), 1)
1107 CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1108 LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1109 EXTLIBS += -lbabeltrace-ctf
1110 $(call detected,CONFIG_LIBBABELTRACE)
1111 else
1112 $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev)
1113 endif
1114endif
1115
1116ifndef NO_CAPSTONE
1117 $(call feature_check,libcapstone)
1118 ifeq ($(feature-libcapstone), 1)
1119 CFLAGS += -DHAVE_LIBCAPSTONE_SUPPORT $(LIBCAPSTONE_CFLAGS)
1120 LDFLAGS += $(LICAPSTONE_LDFLAGS)
1121 EXTLIBS += -lcapstone
1122 $(call detected,CONFIG_LIBCAPSTONE)
1123 else
1124 msg := $(warning No libcapstone found, disables disasm engine support for 'perf script', please install libcapstone-dev/capstone-devel);
1125 endif
1126endif
1127
1128ifndef NO_AUXTRACE
1129 ifeq ($(SRCARCH),x86)
1130 ifeq ($(feature-get_cpuid), 0)
1131 $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc)
1132 NO_AUXTRACE := 1
1133 endif
1134 endif
1135 ifndef NO_AUXTRACE
1136 $(call detected,CONFIG_AUXTRACE)
1137 CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1138 ifeq ($(feature-reallocarray), 0)
1139 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
1140 endif
1141 endif
1142endif
1143
1144ifdef EXTRA_TESTS
1145 $(call detected,CONFIG_EXTRA_TESTS)
1146 CFLAGS += -DHAVE_EXTRA_TESTS
1147endif
1148
1149ifndef NO_JVMTI
1150 ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1151 JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1152 else
1153 ifneq (,$(wildcard /usr/sbin/alternatives))
1154 JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1155 endif
1156 endif
1157 ifndef JDIR
1158 $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1159 NO_JVMTI := 1
1160 endif
1161endif
1162
1163ifndef NO_JVMTI
1164 FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1165 $(call feature_check,jvmti)
1166 ifeq ($(feature-jvmti), 1)
1167 $(call detected_var,JDIR)
1168 ifndef NO_JVMTI_CMLR
1169 FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1170 $(call feature_check,jvmti-cmlr)
1171 ifeq ($(feature-jvmti-cmlr), 1)
1172 CFLAGS += -DHAVE_JVMTI_CMLR
1173 endif
1174 endif # NO_JVMTI_CMLR
1175 else
1176 $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1177 NO_JVMTI := 1
1178 endif
1179endif
1180
1181ifndef NO_LIBPFM4
1182 $(call feature_check,libpfm4)
1183 ifeq ($(feature-libpfm4), 1)
1184 CFLAGS += -DHAVE_LIBPFM
1185 EXTLIBS += -lpfm
1186 ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1187 $(call detected,CONFIG_LIBPFM4)
1188 else
1189 $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev)
1190 endif
1191endif
1192
1193# libtraceevent is a recommended dependency picked up from the system.
1194ifneq ($(NO_LIBTRACEEVENT),1)
1195 $(call feature_check,libtraceevent)
1196 ifeq ($(feature-libtraceevent), 1)
1197 CFLAGS += -DHAVE_LIBTRACEEVENT
1198 LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtraceevent)
1199 EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtraceevent)
1200 LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent).0.0
1201 LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1202 LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1203 LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1204 LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1205 CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1206 $(call detected,CONFIG_LIBTRACEEVENT)
1207 else
1208 $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel and/or set LIBTRACEEVENT_DIR or build with NO_LIBTRACEEVENT=1)
1209 endif
1210
1211 $(call feature_check,libtracefs)
1212 ifeq ($(feature-libtracefs), 1)
1213 CFLAGS += $(shell $(PKG_CONFIG) --cflags libtracefs)
1214 LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtracefs)
1215 EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtracefs)
1216 LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs).0.0
1217 LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1218 LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1219 LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1220 LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1221 CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1222 else
1223 $(warning libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
1224 endif
1225endif
1226
1227# Among the variables below, these:
1228# perfexecdir
1229# libbpf_include_dir
1230# perf_examples_dir
1231# template_dir
1232# mandir
1233# infodir
1234# htmldir
1235# ETC_PERFCONFIG (but not sysconfdir)
1236# can be specified as a relative path some/where/else;
1237# this is interpreted as relative to $(prefix) and "perf" at
1238# runtime figures out where they are based on the path to the executable.
1239# This can help installing the suite in a relocatable way.
1240
1241# Make the path relative to DESTDIR, not to prefix
1242ifndef DESTDIR
1243prefix ?= $(HOME)
1244endif
1245bindir_relative = bin
1246bindir = $(abspath $(prefix)/$(bindir_relative))
1247includedir_relative = include
1248includedir = $(abspath $(prefix)/$(includedir_relative))
1249mandir = share/man
1250infodir = share/info
1251perfexecdir = libexec/perf-core
1252# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
1253libbpf_include_dir = /usr/include
1254perf_examples_dir = lib/perf/examples
1255sharedir = $(prefix)/share
1256template_dir = share/perf-core/templates
1257STRACE_GROUPS_DIR = share/perf-core/strace/groups
1258htmldir = share/doc/perf-doc
1259tipdir = share/doc/perf-tip
1260srcdir = $(srctree)/tools/perf
1261ifeq ($(prefix),/usr)
1262sysconfdir = /etc
1263ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1264else
1265sysconfdir = $(prefix)/etc
1266ETC_PERFCONFIG = etc/perfconfig
1267endif
1268ifndef lib
1269ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1270lib = lib64
1271else
1272lib = lib
1273endif
1274endif # lib
1275libdir = $(prefix)/$(lib)
1276
1277# Shell quote (do not use $(call) to accommodate ancient setups);
1278ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1279STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1280DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1281bindir_SQ = $(subst ','\'',$(bindir))
1282includedir_SQ = $(subst ','\'',$(includedir))
1283mandir_SQ = $(subst ','\'',$(mandir))
1284infodir_SQ = $(subst ','\'',$(infodir))
1285perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1286libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
1287perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1288template_dir_SQ = $(subst ','\'',$(template_dir))
1289htmldir_SQ = $(subst ','\'',$(htmldir))
1290tipdir_SQ = $(subst ','\'',$(tipdir))
1291prefix_SQ = $(subst ','\'',$(prefix))
1292sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1293libdir_SQ = $(subst ','\'',$(libdir))
1294srcdir_SQ = $(subst ','\'',$(srcdir))
1295
1296ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1297perfexec_instdir = $(perfexecdir)
1298perf_include_instdir = $(libbpf_include_dir)
1299perf_examples_instdir = $(perf_examples_dir)
1300STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1301tip_instdir = $(tipdir)
1302else
1303perfexec_instdir = $(prefix)/$(perfexecdir)
1304perf_include_instdir = $(prefix)/$(libbpf_include_dir)
1305perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1306STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1307tip_instdir = $(prefix)/$(tipdir)
1308endif
1309perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1310perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1311perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1312STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1313tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1314
1315export perfexec_instdir_SQ
1316
1317print_var = $(eval $(print_var_code)) $(info $(MSG))
1318define print_var_code
1319 MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
1320endef
1321
1322ifeq ($(feature_display),1)
1323 $(call feature_display_entries)
1324endif
1325
1326ifeq ($(VF),1)
1327 # Display EXTRA features which are detected manualy
1328 # from here with feature_check call and thus cannot
1329 # be partof global state output.
1330 $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
1331 $(call print_var,prefix)
1332 $(call print_var,bindir)
1333 $(call print_var,libdir)
1334 $(call print_var,sysconfdir)
1335 $(call print_var,LIBUNWIND_DIR)
1336 $(call print_var,LIBDW_DIR)
1337 $(call print_var,JDIR)
1338
1339 ifeq ($(dwarf-post-unwind),1)
1340 $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
1341 endif
1342endif
1343
1344$(info )
1345
1346$(call detected_var,bindir_SQ)
1347$(call detected_var,PYTHON_WORD)
1348ifneq ($(OUTPUT),)
1349$(call detected_var,OUTPUT)
1350endif
1351$(call detected_var,htmldir_SQ)
1352$(call detected_var,infodir_SQ)
1353$(call detected_var,mandir_SQ)
1354$(call detected_var,ETC_PERFCONFIG_SQ)
1355$(call detected_var,STRACE_GROUPS_DIR_SQ)
1356$(call detected_var,prefix_SQ)
1357$(call detected_var,perfexecdir_SQ)
1358$(call detected_var,libbpf_include_dir_SQ)
1359$(call detected_var,perf_examples_dir_SQ)
1360$(call detected_var,tipdir_SQ)
1361$(call detected_var,srcdir_SQ)
1362$(call detected_var,LIBDIR)
1363$(call detected_var,GTK_CFLAGS)
1364$(call detected_var,PERL_EMBED_CCOPTS)
1365$(call detected_var,PYTHON_EMBED_CCOPTS)
1366ifneq ($(BISON_FILE_PREFIX_MAP),)
1367$(call detected_var,BISON_FILE_PREFIX_MAP)
1368endif
1369
1370# re-generate FEATURE-DUMP as we may have called feature_check, found out
1371# extra libraries to add to LDFLAGS of some other test and then redo those
1372# tests, see the block about libbfd, disassembler-four-args, for instance.
1373$(shell rm -f $(FEATURE_DUMP_FILENAME))
1374$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))