1 # SPDX-License-Identifier: GPL-2.0-only
4 src-perf := $(srctree)/tools/perf
12 obj-perf := $(abspath $(obj-perf))/
15 $(shell printf "" > $(OUTPUT).config-detected)
16 detected = $(shell echo "$(1)=y" >> $(OUTPUT).config-detected)
17 detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
19 CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
20 HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
22 include $(srctree)/tools/scripts/Makefile.arch
24 $(call detected_var,SRCARCH)
28 ifneq ($(NO_SYSCALL_TABLE),1)
32 ifeq (${IS_64_BIT}, 1)
36 ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips))
41 ifneq ($(NO_SYSCALL_TABLE),1)
42 CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
46 # Additional ARCH settings for ppc
47 ifeq ($(SRCARCH),powerpc)
49 CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
50 LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
53 # Additional ARCH settings for x86
55 $(call detected,CONFIG_X86)
56 ifeq (${IS_64_BIT}, 1)
57 CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
58 ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
59 LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
60 $(call detected,CONFIG_X86_64)
62 LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
69 LIBUNWIND_LIBS = -lunwind -lunwind-arm
72 ifeq ($(SRCARCH),arm64)
74 CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
75 LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
78 ifeq ($(SRCARCH),riscv)
82 ifeq ($(SRCARCH),csky)
88 CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
93 CFLAGS += -I$(OUTPUT)arch/mips/include/generated
94 LIBUNWIND_LIBS = -lunwind -lunwind-mips
97 ifeq ($(NO_PERF_REGS),0)
98 $(call detected,CONFIG_PERF_REGS)
101 # So far there's only x86 and arm libdw unwind support merged in perf.
102 # Disable it on all other architectures in case libdw unwind
103 # support is detected in system. Add supported architectures
105 ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv))
106 NO_LIBDW_DWARF_UNWIND := 1
109 ifeq ($(LIBUNWIND_LIBS),)
113 # For linking with debug library, run like:
115 # make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
118 libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
119 define libunwind_arch_set_flags_code
120 FEATURE_CHECK_CFLAGS-libunwind-$(1) = -I$(LIBUNWIND_DIR)/include
121 FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
125 LIBUNWIND_CFLAGS = -I$(LIBUNWIND_DIR)/include
126 LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
127 LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64
128 $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
131 # Set per-feature check compilation flags
132 FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
133 FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
134 FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
135 FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
137 FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
138 FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
139 FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
140 FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
142 FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
145 LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
147 OPENCSDLIBS := -lopencsd_c_api
148 ifeq ($(findstring -static,${LDFLAGS}),-static)
149 OPENCSDLIBS += -lopencsd -lstdc++
152 LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
154 FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
155 FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
157 ifeq ($(NO_PERF_REGS),0)
158 CFLAGS += -DHAVE_PERF_REGS_SUPPORT
161 # for linking with debug library, run like:
162 # make DEBUG=1 LIBDW_DIR=/opt/libdw/
164 LIBDW_CFLAGS := -I$(LIBDW_DIR)/include
165 LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
168 ifeq ($(findstring -static,${LDFLAGS}),-static)
169 DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
171 FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
172 FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
174 # for linking with debug library, run like:
175 # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
176 ifdef LIBBABELTRACE_DIR
177 LIBBABELTRACE_CFLAGS := -I$(LIBBABELTRACE_DIR)/include
178 LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
180 FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
181 FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
184 LIBZSTD_CFLAGS := -I$(LIBZSTD_DIR)/lib
185 LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
187 FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
188 FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
190 FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
191 # include ARCH specific config
192 -include $(src-perf)/arch/$(SRCARCH)/Makefile
194 ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
195 CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
198 include $(srctree)/tools/scripts/utilities.mak
200 ifeq ($(call get-executable,$(FLEX)),)
201 dummy := $(error Error: $(FLEX) is missing on this system, please install it)
204 ifeq ($(call get-executable,$(BISON)),)
205 dummy := $(error Error: $(BISON) is missing on this system, please install it)
209 ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
210 BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
214 # Treat warnings as errors unless directed not to
216 CORE_CFLAGS += -Werror
218 HOSTCFLAGS += -Werror
226 ifeq ($(CC_NO_CLANG), 0)
234 PARSER_DEBUG_BISON := -t
235 PARSER_DEBUG_FLEX := -d
236 CFLAGS += -DPARSER_DEBUG
237 $(call detected_var,PARSER_DEBUG_BISON)
238 $(call detected_var,PARSER_DEBUG_FLEX)
241 # Try different combinations to accommodate systems that only have
242 # python[2][-config] in weird combinations but always preferring
243 # python2 and python2-config as per pep-0394. If python2 or python
244 # aren't found, then python3 is used.
245 PYTHON_AUTO := python
246 PYTHON_AUTO := $(if $(call get-executable,python3),python3,$(PYTHON_AUTO))
247 PYTHON_AUTO := $(if $(call get-executable,python),python,$(PYTHON_AUTO))
248 PYTHON_AUTO := $(if $(call get-executable,python2),python2,$(PYTHON_AUTO))
249 override PYTHON := $(call get-executable-or-default,PYTHON,$(PYTHON_AUTO))
250 PYTHON_AUTO_CONFIG := \
251 $(if $(call get-executable,$(PYTHON)-config),$(PYTHON)-config,python-config)
252 override PYTHON_CONFIG := \
253 $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO_CONFIG))
255 grep-libs = $(filter -l%,$(1))
256 strip-libs = $(filter-out -l%,$(1))
258 PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
260 # Python 3.8 changed the output of `python-config --ldflags` to not include the
261 # '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
262 # libpython fails if that flag is not included in LDFLAGS
263 ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
264 PYTHON_CONFIG_LDFLAGS := --ldflags --embed
266 PYTHON_CONFIG_LDFLAGS := --ldflags
270 PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
271 PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
272 PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
273 PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
274 FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
277 FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
278 FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
280 FEATURE_CHECK_LDFLAGS-libaio = -lrt
282 FEATURE_CHECK_LDFLAGS-disassembler-four-args = -lbfd -lopcodes -ldl
284 CORE_CFLAGS += -fno-omit-frame-pointer
285 CORE_CFLAGS += -ggdb3
286 CORE_CFLAGS += -funwind-tables
288 CORE_CFLAGS += -Wextra
289 CORE_CFLAGS += -std=gnu99
291 CXXFLAGS += -std=gnu++14 -fno-exceptions -fno-rtti
293 CXXFLAGS += -fno-omit-frame-pointer
295 CXXFLAGS += -funwind-tables
296 CXXFLAGS += -Wno-strict-aliasing
299 HOSTCFLAGS += -Wextra
301 # Enforce a non-executable stack, as we may regress (again) in the future by
302 # adding assembler files missing the .GNU-stack linker note.
303 LDFLAGS += -Wl,-z,noexecstack
305 EXTLIBS = -lpthread -lrt -lm -ldl
308 CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
309 EXTLIBS += -ltcmalloc
312 ifeq ($(FEATURES_DUMP),)
313 # We will display at the end of this Makefile.config, using $(call feature_display_entries)
314 # As we may retry some feature detection here, see the disassembler-four-args case, for instance
315 FEATURE_DISPLAY_DEFERRED := 1
316 include $(srctree)/tools/build/Makefile.feature
318 include $(FEATURES_DUMP)
321 ifeq ($(feature-stackprotector-all), 1)
322 CORE_CFLAGS += -fstack-protector-all
326 ifeq ($(feature-fortify-source), 1)
327 CORE_CFLAGS += -D_FORTIFY_SOURCE=2
331 INC_FLAGS += -I$(srctree)/tools/lib/perf/include
332 INC_FLAGS += -I$(src-perf)/util/include
333 INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
334 INC_FLAGS += -I$(srctree)/tools/include/
335 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
336 INC_FLAGS += -I$(srctree)/tools/include/uapi
337 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
338 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
340 # $(obj-perf) for generated common-cmds.h
341 # $(obj-perf)/util for generated bison/flex headers
343 INC_FLAGS += -I$(obj-perf)/util
344 INC_FLAGS += -I$(obj-perf)
347 INC_FLAGS += -I$(src-perf)/util
348 INC_FLAGS += -I$(src-perf)
349 INC_FLAGS += -I$(srctree)/tools/lib/
351 CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
353 CFLAGS += $(CORE_CFLAGS) $(INC_FLAGS)
354 CXXFLAGS += $(INC_FLAGS)
356 LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
358 ifeq ($(feature-pthread-attr-setaffinity-np), 1)
359 CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
362 ifeq ($(feature-pthread-barrier), 1)
363 CFLAGS += -DHAVE_PTHREAD_BARRIER
367 $(call feature_check,bionic)
368 ifeq ($(feature-bionic), 1)
370 CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
371 CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
372 EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
373 EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
377 ifeq ($(feature-eventfd), 1)
378 CFLAGS += -DHAVE_EVENTFD_SUPPORT
381 ifeq ($(feature-get_current_dir_name), 1)
382 CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
385 ifeq ($(feature-gettid), 1)
386 CFLAGS += -DHAVE_GETTID
389 ifeq ($(feature-file-handle), 1)
390 CFLAGS += -DHAVE_FILE_HANDLE
397 NO_LIBDW_DWARF_UNWIND := 1
401 ifeq ($(feature-libelf), 0)
402 ifeq ($(feature-glibc), 1)
408 ifeq ($(LIBC_SUPPORT),1)
409 msg := $(warning No libelf found. Disables 'probe' tool, jvmti and BPF support in 'perf record'. Please install libelf-dev, libelf-devel or elfutils-libelf-devel);
415 NO_LIBDW_DWARF_UNWIND := 1
419 ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
420 ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
421 msg := $(error No libasan found, please install libasan);
425 ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
426 ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
427 msg := $(error No libubsan found, please install libubsan);
431 ifneq ($(filter s% -static%,$(LDFLAGS),),)
432 msg := $(error No static glibc found, please install glibc-static);
434 msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
438 ifndef NO_LIBDW_DWARF_UNWIND
439 ifneq ($(feature-libdw-dwarf-unwind),1)
440 NO_LIBDW_DWARF_UNWIND := 1
441 msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
444 ifneq ($(feature-dwarf), 1)
446 msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
450 ifneq ($(feature-dwarf_getlocations), 1)
451 msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
453 CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
454 endif # dwarf_getlocations
455 endif # Dwarf support
456 endif # libelf support
459 ifeq ($(feature-glibc), 1)
460 CFLAGS += -DHAVE_GLIBC_SUPPORT
463 ifeq ($(feature-libaio), 1)
465 CFLAGS += -DHAVE_AIO_SUPPORT
470 NO_LIBDW_DWARF_UNWIND := 1
473 ifeq ($(feature-sched_getcpu), 1)
474 CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
477 ifeq ($(feature-setns), 1)
478 CFLAGS += -DHAVE_SETNS_SUPPORT
479 $(call detected,CONFIG_SETNS)
483 $(call feature_check,libopencsd)
484 ifeq ($(feature-libopencsd), 1)
485 CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
486 ifeq ($(feature-reallocarray), 0)
487 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
489 LDFLAGS += $(LIBOPENCSD_LDFLAGS)
490 EXTLIBS += $(OPENCSDLIBS)
491 $(call detected,CONFIG_LIBOPENCSD)
493 CFLAGS += -DCS_DEBUG_RAW
494 ifeq (${CSTRACE_RAW}, packed)
495 CFLAGS += -DCS_RAW_PACKED
499 dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
504 CFLAGS += -DHAVE_LIBELF_SUPPORT
506 $(call detected,CONFIG_LIBELF)
508 ifeq ($(feature-libelf-getphdrnum), 1)
509 CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
512 ifeq ($(feature-libelf-gelf_getnote), 1)
513 CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
515 msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
518 ifeq ($(feature-libelf-getshdrstrndx), 1)
519 CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
522 ifndef NO_LIBDEBUGINFOD
523 $(call feature_check,libdebuginfod)
524 ifeq ($(feature-libdebuginfod), 1)
525 CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
526 EXTLIBS += -ldebuginfod
531 ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
532 msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
535 CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
536 LDFLAGS += $(LIBDW_LDFLAGS)
537 EXTLIBS += ${DWARFLIBS}
538 $(call detected,CONFIG_DWARF)
539 endif # PERF_HAVE_DWARF_REGS
543 ifeq ($(feature-bpf), 1)
544 CFLAGS += -DHAVE_LIBBPF_SUPPORT
545 $(call detected,CONFIG_LIBBPF)
547 # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
548 $(call feature_check,libbpf)
550 ifeq ($(feature-libbpf), 1)
552 $(call detected,CONFIG_LIBBPF_DYNAMIC)
554 dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
560 ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
561 CFLAGS += -DHAVE_BPF_PROLOGUE
562 $(call detected,CONFIG_BPF_PROLOGUE)
564 msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
567 msg := $(warning DWARF support is off, BPF prologue is disabled);
574 ifneq ($(feature-sdt), 1)
575 msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
578 CFLAGS += -DHAVE_SDT_EVENT
579 $(call detected,CONFIG_SDT_EVENT)
583 ifdef PERF_HAVE_JITDUMP
585 $(call detected,CONFIG_JITDUMP)
586 CFLAGS += -DHAVE_JITDUMP
590 ifeq ($(SRCARCH),powerpc)
592 CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
599 $(call feature_check,libunwind-x86)
600 ifeq ($(feature-libunwind-x86), 1)
601 $(call detected,CONFIG_LIBUNWIND_X86)
602 CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
603 LDFLAGS += -lunwind-x86
604 EXTLIBS_LIBUNWIND += -lunwind-x86
608 $(call feature_check,libunwind-aarch64)
609 ifeq ($(feature-libunwind-aarch64), 1)
610 $(call detected,CONFIG_LIBUNWIND_AARCH64)
611 CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
612 LDFLAGS += -lunwind-aarch64
613 EXTLIBS_LIBUNWIND += -lunwind-aarch64
615 $(call feature_check,libunwind-debug-frame-aarch64)
616 ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
617 msg := $(warning No debug_frame support found in libunwind-aarch64);
618 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
622 ifneq ($(feature-libunwind), 1)
623 msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
624 NO_LOCAL_LIBUNWIND := 1
627 $(call detected,CONFIG_LOCAL_LIBUNWIND)
630 ifneq ($(have_libunwind), 1)
634 NO_LOCAL_LIBUNWIND := 1
638 ifneq ($(feature-bpf), 1)
639 msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
645 $(call feature_check,clang-bpf-co-re)
646 ifeq ($(feature-clang-bpf-co-re), 0)
647 dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
649 $(call detected,CONFIG_PERF_BPF_SKEL)
650 CFLAGS += -DHAVE_BPF_SKEL
653 dwarf-post-unwind := 1
654 dwarf-post-unwind-text := BUG
656 # setup DWARF post unwinder
658 ifdef NO_LIBDW_DWARF_UNWIND
659 msg := $(warning Disabling post unwind, no support found.);
660 dwarf-post-unwind := 0
662 dwarf-post-unwind-text := libdw
663 $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
666 dwarf-post-unwind-text := libunwind
667 $(call detected,CONFIG_LIBUNWIND)
668 # Enable libunwind support by default.
669 ifndef NO_LIBDW_DWARF_UNWIND
670 NO_LIBDW_DWARF_UNWIND := 1
674 ifeq ($(dwarf-post-unwind),1)
675 CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
676 $(call detected,CONFIG_DWARF_UNWIND)
681 ifndef NO_LOCAL_LIBUNWIND
682 ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
683 $(call feature_check,libunwind-debug-frame)
684 ifneq ($(feature-libunwind-debug-frame), 1)
685 msg := $(warning No debug_frame support found in libunwind);
686 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
689 # non-ARM has no dwarf_find_debug_frame() function:
690 CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
692 EXTLIBS += $(LIBUNWIND_LIBS)
693 LDFLAGS += $(LIBUNWIND_LIBS)
695 ifeq ($(findstring -static,${LDFLAGS}),-static)
696 # gcc -static links libgcc_eh which contans piece of libunwind
697 LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
701 CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
702 CFLAGS += $(LIBUNWIND_CFLAGS)
703 LDFLAGS += $(LIBUNWIND_LDFLAGS)
704 EXTLIBS += $(EXTLIBS_LIBUNWIND)
707 ifeq ($(NO_SYSCALL_TABLE),0)
708 $(call detected,CONFIG_TRACE)
711 $(call feature_check,libaudit)
712 ifneq ($(feature-libaudit), 1)
713 msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
716 CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
718 $(call detected,CONFIG_TRACE)
724 ifneq ($(feature-libcrypto), 1)
725 msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
728 CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
730 $(call detected,CONFIG_CRYPTO)
739 ifneq ($(feature-libslang), 1)
740 ifneq ($(feature-libslang-include-subdir), 1)
741 msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
744 CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
748 # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
749 CFLAGS += -DHAVE_SLANG_SUPPORT
751 $(call detected,CONFIG_SLANG)
756 FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
757 $(call feature_check,gtk2)
758 ifneq ($(feature-gtk2), 1)
759 msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
762 $(call feature_check,gtk2-infobar)
763 ifeq ($(feature-gtk2-infobar), 1)
764 GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
766 CFLAGS += -DHAVE_GTK2_SUPPORT
767 GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
768 GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
774 CFLAGS += -DNO_LIBPERL
776 PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
777 PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
778 PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
779 PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
780 PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
781 PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
782 PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
783 FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
785 ifneq ($(feature-libperl), 1)
786 CFLAGS += -DNO_LIBPERL
788 msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
790 LDFLAGS += $(PERL_EMBED_LDFLAGS)
791 EXTLIBS += $(PERL_EMBED_LIBADD)
792 CFLAGS += -DHAVE_LIBPERL_SUPPORT
793 $(call detected,CONFIG_LIBPERL)
797 ifeq ($(feature-timerfd), 1)
798 CFLAGS += -DHAVE_TIMERFD_SUPPORT
800 msg := $(warning No timerfd support. Disables 'perf kvm stat live');
803 disable-python = $(eval $(disable-python_code))
804 define disable-python_code
805 CFLAGS += -DNO_LIBPYTHON
811 $(call disable-python,Python support disabled by user)
815 $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
817 PYTHON_WORD := $(call shell-wordify,$(PYTHON))
820 $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
823 ifneq ($(feature-libpython), 1)
824 $(call disable-python,No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev)
826 LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
827 EXTLIBS += $(PYTHON_EMBED_LIBADD)
828 LANG_BINDINGS += $(obj-perf)python/perf.so
829 CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
830 $(call detected,CONFIG_LIBPYTHON)
838 ifeq ($(feature-libbfd), 1)
839 EXTLIBS += -lbfd -lopcodes
841 # we are on a system that requires -liberty and (maybe) -lz
842 # to link against -lbfd; test each case individually here
844 # call all detections now so we get correct
845 # status in VF output
846 $(call feature_check,libbfd-liberty)
847 $(call feature_check,libbfd-liberty-z)
849 ifeq ($(feature-libbfd-liberty), 1)
850 EXTLIBS += -lbfd -lopcodes -liberty
851 FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -ldl
853 ifeq ($(feature-libbfd-liberty-z), 1)
854 EXTLIBS += -lbfd -lopcodes -liberty -lz
855 FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -lz -ldl
858 $(call feature_check,disassembler-four-args)
861 ifeq ($(feature-libbfd-buildid), 1)
862 CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
864 msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
869 CFLAGS += -DNO_DEMANGLE
871 ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
874 ifeq ($(filter -liberty,$(EXTLIBS)),)
875 $(call feature_check,cplus-demangle)
877 # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT
878 # or any of 'bfd iberty z' trinity
879 ifeq ($(feature-cplus-demangle), 1)
882 msg := $(warning No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling)
883 CFLAGS += -DNO_DEMANGLE
888 ifneq ($(filter -liberty,$(EXTLIBS)),)
889 CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
893 ifneq ($(filter -lbfd,$(EXTLIBS)),)
894 CFLAGS += -DHAVE_LIBBFD_SUPPORT
898 ifeq ($(feature-zlib), 1)
899 CFLAGS += -DHAVE_ZLIB_SUPPORT
901 $(call detected,CONFIG_ZLIB)
908 ifeq ($(feature-lzma), 1)
909 CFLAGS += -DHAVE_LZMA_SUPPORT
911 $(call detected,CONFIG_LZMA)
913 msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
919 ifeq ($(feature-libzstd), 1)
920 CFLAGS += -DHAVE_ZSTD_SUPPORT
921 CFLAGS += $(LIBZSTD_CFLAGS)
922 LDFLAGS += $(LIBZSTD_LDFLAGS)
924 $(call detected,CONFIG_ZSTD)
926 msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
932 ifeq ($(feature-libcap), 1)
933 CFLAGS += -DHAVE_LIBCAP_SUPPORT
935 $(call detected,CONFIG_LIBCAP)
937 msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
943 ifeq ($(feature-backtrace), 1)
944 CFLAGS += -DHAVE_BACKTRACE_SUPPORT
949 ifeq ($(feature-libnuma), 0)
950 msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
953 ifeq ($(feature-numa_num_possible_cpus), 0)
954 msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
957 CFLAGS += -DHAVE_LIBNUMA_SUPPORT
959 $(call detected,CONFIG_NUMA)
964 ifdef HAVE_KVM_STAT_SUPPORT
965 CFLAGS += -DHAVE_KVM_STAT_SUPPORT
968 ifeq ($(feature-disassembler-four-args), 1)
969 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
972 ifeq (${IS_64_BIT}, 1)
973 ifndef NO_PERF_READ_VDSO32
974 $(call feature_check,compile-32)
975 ifeq ($(feature-compile-32), 1)
976 CFLAGS += -DHAVE_PERF_READ_VDSO32
978 NO_PERF_READ_VDSO32 := 1
981 ifneq ($(SRCARCH), x86)
982 NO_PERF_READ_VDSOX32 := 1
984 ifndef NO_PERF_READ_VDSOX32
985 $(call feature_check,compile-x32)
986 ifeq ($(feature-compile-x32), 1)
987 CFLAGS += -DHAVE_PERF_READ_VDSOX32
989 NO_PERF_READ_VDSOX32 := 1
993 NO_PERF_READ_VDSO32 := 1
994 NO_PERF_READ_VDSOX32 := 1
997 ifndef NO_LIBBABELTRACE
998 $(call feature_check,libbabeltrace)
999 ifeq ($(feature-libbabeltrace), 1)
1000 CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1001 LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1002 EXTLIBS += -lbabeltrace-ctf
1003 $(call detected,CONFIG_LIBBABELTRACE)
1005 msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
1010 ifeq ($(SRCARCH),x86)
1011 ifeq ($(feature-get_cpuid), 0)
1012 msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
1017 $(call detected,CONFIG_AUXTRACE)
1018 CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1019 ifeq ($(feature-reallocarray), 0)
1020 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
1026 ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1027 JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1029 ifneq (,$(wildcard /usr/sbin/alternatives))
1030 JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1034 $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1040 FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1041 $(call feature_check,jvmti)
1042 ifeq ($(feature-jvmti), 1)
1043 $(call detected_var,JDIR)
1044 ifndef NO_JVMTI_CMLR
1045 FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1046 $(call feature_check,jvmti-cmlr)
1047 ifeq ($(feature-jvmti-cmlr), 1)
1048 CFLAGS += -DHAVE_JVMTI_CMLR
1050 endif # NO_JVMTI_CMLR
1052 $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1060 $(call feature_check,cxx)
1061 ifneq ($(feature-cxx), 1)
1062 msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
1064 $(call feature_check,llvm)
1065 $(call feature_check,llvm-version)
1066 ifneq ($(feature-llvm), 1)
1067 msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
1069 $(call feature_check,clang)
1070 ifneq ($(feature-clang), 1)
1071 msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
1073 CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
1074 CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
1075 $(call detected,CONFIG_CXX)
1076 $(call detected,CONFIG_CLANGLLVM)
1080 ifneq ($(feature-llvm-version),1)
1081 msg := $(warning This version of LLVM is not tested. May cause build errors)
1089 $(call feature_check,libpfm4)
1090 ifeq ($(feature-libpfm4), 1)
1091 CFLAGS += -DHAVE_LIBPFM
1093 ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1094 $(call detected,CONFIG_LIBPFM4)
1096 msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
1101 ifdef LIBTRACEEVENT_DYNAMIC
1102 $(call feature_check,libtraceevent)
1103 ifeq ($(feature-libtraceevent), 1)
1104 EXTLIBS += -ltraceevent
1105 LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
1106 LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1107 LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1108 LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1109 LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1110 CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1112 dummy := $(error Error: No libtraceevent devel library found, please install libtraceevent-devel);
1116 ifdef LIBTRACEFS_DYNAMIC
1117 $(call feature_check,libtracefs)
1118 ifeq ($(feature-libtracefs), 1)
1119 EXTLIBS += -ltracefs
1120 LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
1121 LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1122 LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1123 LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1124 LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1125 CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1127 dummy := $(error Error: No libtracefs devel library found, please install libtracefs-dev);
1131 # Among the variables below, these:
1139 # ETC_PERFCONFIG (but not sysconfdir)
1140 # can be specified as a relative path some/where/else;
1141 # this is interpreted as relative to $(prefix) and "perf" at
1142 # runtime figures out where they are based on the path to the executable.
1143 # This can help installing the suite in a relocatable way.
1145 # Make the path relative to DESTDIR, not to prefix
1149 bindir_relative = bin
1150 bindir = $(abspath $(prefix)/$(bindir_relative))
1151 includedir_relative = include
1152 includedir = $(abspath $(prefix)/$(includedir_relative))
1154 infodir = share/info
1155 perfexecdir = libexec/perf-core
1156 perf_include_dir = lib/perf/include
1157 perf_examples_dir = lib/perf/examples
1158 sharedir = $(prefix)/share
1159 template_dir = share/perf-core/templates
1160 STRACE_GROUPS_DIR = share/perf-core/strace/groups
1161 htmldir = share/doc/perf-doc
1162 tipdir = share/doc/perf-tip
1163 srcdir = $(srctree)/tools/perf
1164 ifeq ($(prefix),/usr)
1166 ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1168 sysconfdir = $(prefix)/etc
1169 ETC_PERFCONFIG = etc/perfconfig
1172 ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1178 libdir = $(prefix)/$(lib)
1180 # Shell quote (do not use $(call) to accommodate ancient setups);
1181 ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1182 STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1183 DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1184 bindir_SQ = $(subst ','\'',$(bindir))
1185 includedir_SQ = $(subst ','\'',$(includedir))
1186 mandir_SQ = $(subst ','\'',$(mandir))
1187 infodir_SQ = $(subst ','\'',$(infodir))
1188 perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1189 perf_include_dir_SQ = $(subst ','\'',$(perf_include_dir))
1190 perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1191 template_dir_SQ = $(subst ','\'',$(template_dir))
1192 htmldir_SQ = $(subst ','\'',$(htmldir))
1193 tipdir_SQ = $(subst ','\'',$(tipdir))
1194 prefix_SQ = $(subst ','\'',$(prefix))
1195 sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1196 libdir_SQ = $(subst ','\'',$(libdir))
1197 srcdir_SQ = $(subst ','\'',$(srcdir))
1199 ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1200 perfexec_instdir = $(perfexecdir)
1201 perf_include_instdir = $(perf_include_dir)
1202 perf_examples_instdir = $(perf_examples_dir)
1203 STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1204 tip_instdir = $(tipdir)
1206 perfexec_instdir = $(prefix)/$(perfexecdir)
1207 perf_include_instdir = $(prefix)/$(perf_include_dir)
1208 perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1209 STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1210 tip_instdir = $(prefix)/$(tipdir)
1212 perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1213 perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1214 perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1215 STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1216 tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1218 # If we install to $(HOME) we keep the traceevent default:
1219 # $(HOME)/.traceevent/plugins
1220 # Otherwise we install plugins into the global $(libdir).
1222 plugindir=$(libdir)/traceevent/plugins
1223 plugindir_SQ= $(subst ','\'',$(plugindir))
1226 print_var = $(eval $(print_var_code)) $(info $(MSG))
1227 define print_var_code
1228 MSG = $(shell printf '...%30s: %s' $(1) $($(1)))
1232 # Display EXTRA features which are detected manualy
1233 # from here with feature_check call and thus cannot
1234 # be partof global state output.
1235 $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),))
1236 $(call print_var,prefix)
1237 $(call print_var,bindir)
1238 $(call print_var,libdir)
1239 $(call print_var,sysconfdir)
1240 $(call print_var,LIBUNWIND_DIR)
1241 $(call print_var,LIBDW_DIR)
1242 $(call print_var,JDIR)
1244 ifeq ($(dwarf-post-unwind),1)
1245 $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
1250 $(call detected_var,bindir_SQ)
1251 $(call detected_var,PYTHON_WORD)
1253 $(call detected_var,OUTPUT)
1255 $(call detected_var,htmldir_SQ)
1256 $(call detected_var,infodir_SQ)
1257 $(call detected_var,mandir_SQ)
1258 $(call detected_var,ETC_PERFCONFIG_SQ)
1259 $(call detected_var,STRACE_GROUPS_DIR_SQ)
1260 $(call detected_var,prefix_SQ)
1261 $(call detected_var,perfexecdir_SQ)
1262 $(call detected_var,perf_include_dir_SQ)
1263 $(call detected_var,perf_examples_dir_SQ)
1264 $(call detected_var,tipdir_SQ)
1265 $(call detected_var,srcdir_SQ)
1266 $(call detected_var,LIBDIR)
1267 $(call detected_var,GTK_CFLAGS)
1268 $(call detected_var,PERL_EMBED_CCOPTS)
1269 $(call detected_var,PYTHON_EMBED_CCOPTS)
1270 ifneq ($(BISON_FILE_PREFIX_MAP),)
1271 $(call detected_var,BISON_FILE_PREFIX_MAP)
1274 # re-generate FEATURE-DUMP as we may have called feature_check, found out
1275 # extra libraries to add to LDFLAGS of some other test and then redo those
1276 # tests, see the block about libbfd, disassembler-four-args, for instance.
1277 $(shell rm -f $(FEATURE_DUMP_FILENAME))
1278 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
1280 ifeq ($(feature_display),1)
1281 $(call feature_display_entries)