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b0063dbfb0
The auxtrace code needed by Intel PT uses the __get_cpuid() gcc builtin,
that is not present in old systems, breaking the build.
Add a test to check for that builtin and disable AUXTRACE in those
systems.
[acme@rhel5 linux]$ make NO_LIBPERL=1 -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory `/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j2' parallel build
Auto-detecting system features:
<SNIP>
... lzma: [ on ]
... get_cpuid: [ OFF ]
<SNIP>
config/Makefile:630: Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc
MKDIR /tmp/build/perf/util/
<SNIP>
This fixes the build on old systems such as RHEL/CentOS 5.11.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Victor Kamensky <victor.kamensky@linaro.org>
Cc: Vinson Lee <vlee@twopensource.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-d4puslul0jltoodzpx9r4sje@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
176 lines
4.6 KiB
Gherkin
176 lines
4.6 KiB
Gherkin
feature_dir := $(srctree)/tools/build/feature
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ifneq ($(OUTPUT),)
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OUTPUT_FEATURES = $(OUTPUT)feature/
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$(shell mkdir -p $(OUTPUT_FEATURES))
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endif
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feature_check = $(eval $(feature_check_code))
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define feature_check_code
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feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
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endef
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feature_set = $(eval $(feature_set_code))
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define feature_set_code
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feature-$(1) := 1
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endef
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#
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# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
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#
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#
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# Note that this is not a complete list of all feature tests, just
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# those that are typically built on a fully configured system.
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#
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# [ Feature tests not mentioned here have to be built explicitly in
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# the rule that uses them - an example for that is the 'bionic'
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# feature check. ]
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#
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FEATURE_TESTS ?= \
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backtrace \
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dwarf \
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fortify-source \
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sync-compare-and-swap \
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glibc \
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gtk2 \
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gtk2-infobar \
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libaudit \
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libbfd \
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libelf \
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libelf-getphdrnum \
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libelf-mmap \
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libnuma \
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numa_num_possible_cpus \
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libperl \
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libpython \
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libpython-version \
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libslang \
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libunwind \
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pthread-attr-setaffinity-np \
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stackprotector-all \
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timerfd \
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libdw-dwarf-unwind \
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zlib \
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lzma \
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get_cpuid
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FEATURE_DISPLAY ?= \
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dwarf \
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glibc \
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gtk2 \
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libaudit \
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libbfd \
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libelf \
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libnuma \
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numa_num_possible_cpus \
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libperl \
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libpython \
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libslang \
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libunwind \
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libdw-dwarf-unwind \
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zlib \
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lzma \
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get_cpuid
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# Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
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# If in the future we need per-feature checks/flags for features not
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# mentioned in this list we need to refactor this ;-).
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set_test_all_flags = $(eval $(set_test_all_flags_code))
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define set_test_all_flags_code
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FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
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FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
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endef
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$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
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#
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# Special fast-path for the 'all features are available' case:
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#
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$(call feature_check,all,$(MSG))
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#
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# Just in case the build freshly failed, make sure we print the
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# feature matrix:
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#
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ifeq ($(feature-all), 1)
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#
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# test-all.c passed - just set all the core feature flags to 1:
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#
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$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
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else
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$(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C $(feature_dir) $(addsuffix .bin,$(FEATURE_TESTS)) >/dev/null 2>&1)
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$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
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endif
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#
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# Print the result of the feature test:
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#
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feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
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define feature_print_status_code
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ifeq ($(feature-$(1)), 1)
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MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
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else
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MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
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endif
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endef
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feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
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define feature_print_text_code
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MSG = $(shell printf '...%30s: %s' $(1) $(2))
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endef
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FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat))))
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FEATURE_DUMP_FILE := $(shell touch $(OUTPUT)FEATURE-DUMP; cat $(OUTPUT)FEATURE-DUMP)
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ifeq ($(dwarf-post-unwind),1)
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FEATURE_DUMP += dwarf-post-unwind($(dwarf-post-unwind-text))
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endif
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# The $(feature_display) controls the default detection message
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# output. It's set if:
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# - detected features differes from stored features from
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# last build (in FEATURE-DUMP file)
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# - one of the $(FEATURE_DISPLAY) is not detected
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# - VF is enabled
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ifneq ("$(FEATURE_DUMP)","$(FEATURE_DUMP_FILE)")
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$(shell echo "$(FEATURE_DUMP)" > $(OUTPUT)FEATURE-DUMP)
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feature_display := 1
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endif
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feature_display_check = $(eval $(feature_check_code))
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define feature_display_check_code
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ifneq ($(feature-$(1)), 1)
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feature_display := 1
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endif
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endef
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$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
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ifeq ($(VF),1)
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feature_display := 1
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feature_verbose := 1
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endif
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ifeq ($(feature_display),1)
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$(info )
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$(info Auto-detecting system features:)
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$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
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ifeq ($(dwarf-post-unwind),1)
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$(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
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endif
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ifneq ($(feature_verbose),1)
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$(info )
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endif
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endif
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ifeq ($(feature_verbose),1)
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TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
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$(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
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$(info )
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endif
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