Re: [PATCH v2 00/10] perf parse-events: enable more flex/bison warnings

From: Ian Rogers
Date: Fri Jun 19 2020 - 11:16:09 EST

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In reply to: Arnaldo Carvalho de Melo: "Re: [PATCH v2 00/10] perf parse-events: enable more flex/bison warnings"
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On Fri, Jun 19, 2020 at 5:20 AM Arnaldo Carvalho de Melo
<acme@xxxxxxxxxx> wrote:
>
> Em Fri, Jun 19, 2020 at 09:15:57AM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Thu, Jun 18, 2020 at 09:33:46PM -0700, Ian Rogers escreveu:
> > > All C compiler warnings are disabled are disabled by -w. This change
> > > removes the -w from flex and bison targets. To avoid implicit
> > > declarations header files are declared as targets and included.
> > >
> > > Tested with GCC 9.3.0 and clang 9.0.1.
> > >
> > > v2. predicates disabling the warnings on more recent bison and flex
> > > versions (3.5.3 and 2.6.4 respectively). An alternative would be
> > > to disabled a large number of warnings to cover the warnings
> > > generated in older distributions:
> > > flex_flags := -Wno-switch-enum -Wno-switch-default -Wno-unused-function \
> > > -Wno-redundant-decls -Wno-sign-compare -Wno-unused-parameter \
> > > -Wno-missing-prototypes -Wno-misleading-indentation
> > > bison_flags := -DYYENABLE_NLS=0 -Wno-unused-parameter -Wno-nested-externs \
> > > -Wno-implicit-function-declaration -Wno-switch-enum
> >
> > So, it is failing with older versions of alpine Linux, but then at
> > alpine 3.8 I noticed that the problem is happening only when building
> > with this following set of options, and when building with gcc, building
> > with clang, i.e. adding CC=clang to the following make command line
> > works.
>
> I'll also check if this isn't because these container tests do multiple
> make calls, with different sets of options (NO_LIBBPF=1, another with
> NO_LIBELF=1, the one with LIBCLANGLLVM=1, etc) and perhaps the stuff
> from previous builds pollute a subsequent build, i.e. will try adding a
> rm -rf to the O= directory if missing.

Thanks! I don't have a good explanation as to why this would fail.
Sorry about the Acked-by. Let me know if I should do anything more.

Ian

> > + make 'ARCH=' 'CROSS_COMPILE=' 'EXTRA_CFLAGS=' 'LIBCLANGLLVM=1' -C /git/linux/tools/perf 'O=/tmp/build/perf'
> > make: Entering directory '/git/linux/tools/perf'
> > BUILD: Doing 'make -j8' parallel build
> > HOSTCC /tmp/build/perf/fixdep.o
> > HOSTLD /tmp/build/perf/fixdep-in.o
> > LINK /tmp/build/perf/fixdep
> >
> > Auto-detecting system features:
> > ... dwarf: [ OFF ]
> > ... dwarf_getlocations: [ OFF ]
> > ... glibc: [ OFF ]
> > ... gtk2: [ on ]
> > ... libbfd: [ on ]
> > ... libcap: [ on ]
> > ... libelf: [ on ]
> > ... libnuma: [ OFF ]
> > ... numa_num_possible_cpus: [ OFF ]
> > ... libperl: [ on ]
> > ... libpython: [ on ]
> > ... libcrypto: [ on ]
> > ... libunwind: [ on ]
> > ... libdw-dwarf-unwind: [ OFF ]
> > ... zlib: [ on ]
> > ... lzma: [ on ]
> > ... get_cpuid: [ on ]
> > ... bpf: [ on ]
> > ... libaio: [ on ]
> > ... libzstd: [ on ]
> > ... disassembler-four-args: [ on ]
> >
> > Makefile.config:409: No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR
> > Makefile.config:414: 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
> > Makefile.config:485: gelf_getnote() not found on libelf, SDT support disabled
> > Makefile.config:528: DWARF support is off, BPF prologue is disabled
> > Makefile.config:536: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev
> > Makefile.config:890: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev
> > Makefile.config:945: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
> > Makefile.config:971: No alternatives command found, you need to set JDIR= to point to the root of your Java directory
> > Makefile.config:1008: No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0)
> > GEN /tmp/build/perf/common-cmds.h
> > sort: unrecognized option: V
> > BusyBox v1.28.4 (2018-12-31 18:05:13 UTC) multi-call binary.
> > PERF_VERSION = 5.7.g6f01af8176af
> >
> > Usage: sort [-nrugMcszbdfiokt] [-o FILE] [-k start[.offset][opts][,end[.offset][opts]] [-t CHAR] [FILE]...
> >
> > Sort lines of text
> >
> > -o FILE Output to FILE
> > -c Check whether input is sorted
> > -b Ignore leading blanks
> > -f Ignore case
> > -i Ignore unprintable characters
> > -d Dictionary order (blank or alphanumeric only)
> > -g General numerical sort
> > -M Sort month
> > -n Sort numbers
> > -t CHAR Field separator
> > -k N[,M] Sort by Nth field
> > -r Reverse sort order
> > -s Stable (don't sort ties alphabetically)
> > -u Suppress duplicate lines
> > -z Lines are terminated by NUL, not newline
> > CC /tmp/build/perf/exec-cmd.o
> > CC /tmp/build/perf/event-parse.o
> > MKDIR /tmp/build/perf/fd/
> > CC /tmp/build/perf/fd/array.o
> > GEN /tmp/build/perf/bpf_helper_defs.h
> > CC /tmp/build/perf/event-plugin.o
> > CC /tmp/build/perf/core.o
> > LD /tmp/build/perf/fd/libapi-in.o
> > MKDIR /tmp/build/perf/fs/
> > CC /tmp/build/perf/fs/fs.o
> > CC /tmp/build/perf/cpumap.o
> > CC /tmp/build/perf/trace-seq.o
> > CC /tmp/build/perf/threadmap.o
> > CC /tmp/build/perf/help.o
> > MKDIR /tmp/build/perf/staticobjs/
> > CC /tmp/build/perf/staticobjs/libbpf.o
> > MKDIR /tmp/build/perf/staticobjs/
> > CC /tmp/build/perf/staticobjs/bpf.o
> > CC /tmp/build/perf/cpu.o
> > CC /tmp/build/perf/parse-filter.o
> > CC /tmp/build/perf/evsel.o
> > CC /tmp/build/perf/evlist.o
> > CC /tmp/build/perf/pager.o
> > CC /tmp/build/perf/parse-options.o
> > CC /tmp/build/perf/parse-utils.o
> > CC /tmp/build/perf/mmap.o
> > CC /tmp/build/perf/kbuffer-parse.o
> > CC /tmp/build/perf/zalloc.o
> > CC /tmp/build/perf/tep_strerror.o
> > CC /tmp/build/perf/xyarray.o
> > CC /tmp/build/perf/event-parse-api.o
> > CC /tmp/build/perf/run-command.o
> > CC /tmp/build/perf/sigchain.o
> > LD /tmp/build/perf/libtraceevent-in.o
> > LINK /tmp/build/perf/libtraceevent.a
> > MKDIR /tmp/build/perf/fs/
> > CC /tmp/build/perf/fs/tracing_path.o
> > CC /tmp/build/perf/debug.o
> > CC /tmp/build/perf/str_error_r.o
> > CC /tmp/build/perf/fs/cgroup.o
> > CC /tmp/build/perf/subcmd-config.o
> > CC /tmp/build/perf/lib.o
> > CC /tmp/build/perf/staticobjs/nlattr.o
> > CC /tmp/build/perf/staticobjs/btf.o
> > CC /tmp/build/perf/staticobjs/libbpf_errno.o
> > LD /tmp/build/perf/fs/libapi-in.o
> > CC /tmp/build/perf/staticobjs/str_error.o
> > CC /tmp/build/perf/staticobjs/netlink.o
> > LD /tmp/build/perf/libapi-in.o
> > AR /tmp/build/perf/libapi.a
> > CC /tmp/build/perf/staticobjs/bpf_prog_linfo.o
> > LD /tmp/build/perf/libperf-in.o
> > AR /tmp/build/perf/libperf.a
> > CC /tmp/build/perf/staticobjs/libbpf_probes.o
> > CC /tmp/build/perf/staticobjs/xsk.o
> > LD /tmp/build/perf/libsubcmd-in.o
> > CC /tmp/build/perf/staticobjs/hashmap.o
> > AR /tmp/build/perf/libsubcmd.a
> > CC /tmp/build/perf/staticobjs/btf_dump.o
> > CC /tmp/build/perf/staticobjs/ringbuf.o
> > MKDIR /tmp/build/perf/pmu-events/
> > GEN perf-archive
> > HOSTCC /tmp/build/perf/pmu-events/json.o
> > GEN perf-with-kcore
> > MKDIR /tmp/build/perf/ui/gtk/
> > MKDIR /tmp/build/perf/pmu-events/
> > CC /tmp/build/perf/ui/gtk/browser.o
> > HOSTCC /tmp/build/perf/pmu-events/jsmn.o
> > HOSTCC /tmp/build/perf/pmu-events/jevents.o
> > CC /tmp/build/perf/plugin_jbd2.o
> > CC /tmp/build/perf/plugin_hrtimer.o
> > CC /tmp/build/perf/plugin_kmem.o
> > CC /tmp/build/perf/plugin_kvm.o
> > LD /tmp/build/perf/plugin_hrtimer-in.o
> > LD /tmp/build/perf/plugin_jbd2-in.o
> > LD /tmp/build/perf/plugin_kmem-in.o
> > CC /tmp/build/perf/plugin_mac80211.o
> > CC /tmp/build/perf/plugin_sched_switch.o
> > CC /tmp/build/perf/plugin_function.o
> > LD /tmp/build/perf/plugin_kvm-in.o
> > LD /tmp/build/perf/plugin_mac80211-in.o
> > MKDIR /tmp/build/perf/ui/gtk/
> > CC /tmp/build/perf/plugin_xen.o
> > CC /tmp/build/perf/ui/gtk/hists.o
> > LD /tmp/build/perf/plugin_sched_switch-in.o
> > LD /tmp/build/perf/staticobjs/libbpf-in.o
> > LD /tmp/build/perf/plugin_xen-in.o
> > LINK /tmp/build/perf/libbpf.a
> > CC /tmp/build/perf/plugin_scsi.o
> > LD /tmp/build/perf/plugin_function-in.o
> > CC /tmp/build/perf/plugin_cfg80211.o
> > HOSTLD /tmp/build/perf/pmu-events/jevents-in.o
> > CC /tmp/build/perf/ui/gtk/setup.o
> > LINK /tmp/build/perf/plugin_jbd2.so
> > LINK /tmp/build/perf/pmu-events/jevents
> > GEN /tmp/build/perf/pmu-events/pmu-events.c
> > LINK /tmp/build/perf/plugin_hrtimer.so
> > LD /tmp/build/perf/plugin_cfg80211-in.o
> > LD /tmp/build/perf/plugin_scsi-in.o
> > LINK /tmp/build/perf/plugin_kmem.so
> > LINK /tmp/build/perf/plugin_kvm.so
> > CC /tmp/build/perf/ui/gtk/util.o
> > LINK /tmp/build/perf/plugin_mac80211.so
> > LINK /tmp/build/perf/plugin_sched_switch.so
> > LINK /tmp/build/perf/plugin_function.so
> > LINK /tmp/build/perf/plugin_xen.so
> > LINK /tmp/build/perf/plugin_scsi.so
> > LINK /tmp/build/perf/plugin_cfg80211.so
> > CC /tmp/build/perf/ui/gtk/helpline.o
> > GEN /tmp/build/perf/libtraceevent-dynamic-list
> > GEN /tmp/build/perf/python/perf.so
> > CC /tmp/build/perf/ui/gtk/progress.o
> > CC /tmp/build/perf/pmu-events/pmu-events.o
> > CC /tmp/build/perf/ui/gtk/annotate.o
> > CC /tmp/build/perf/builtin-bench.o
> > CC /tmp/build/perf/ui/gtk/zalloc.o
> > CC /tmp/build/perf/builtin-annotate.o
> > CC /tmp/build/perf/builtin-config.o
> > CC /tmp/build/perf/builtin-diff.o
> > CC /tmp/build/perf/builtin-evlist.o
> > CC /tmp/build/perf/builtin-ftrace.o
> > CC /tmp/build/perf/builtin-help.o
> > CC /tmp/build/perf/builtin-sched.o
> > CC /tmp/build/perf/builtin-buildid-list.o
> > LD /tmp/build/perf/pmu-events/pmu-events-in.o
> > LD /tmp/build/perf/ui/gtk/gtk-in.o
> > CC /tmp/build/perf/builtin-buildid-cache.o
> > CC /tmp/build/perf/builtin-kallsyms.o
> > CC /tmp/build/perf/builtin-list.o
> > CC /tmp/build/perf/builtin-record.o
> > CC /tmp/build/perf/builtin-report.o
> > LD /tmp/build/perf/gtk-in.o
> > LINK /tmp/build/perf/libperf-gtk.so
> > CC /tmp/build/perf/builtin-stat.o
> > CC /tmp/build/perf/builtin-timechart.o
> > CC /tmp/build/perf/builtin-top.o
> > CC /tmp/build/perf/builtin-script.o
> > CC /tmp/build/perf/builtin-kmem.o
> > CC /tmp/build/perf/builtin-lock.o
> > CC /tmp/build/perf/builtin-kvm.o
> > CC /tmp/build/perf/builtin-inject.o
> > CC /tmp/build/perf/builtin-mem.o
> > CC /tmp/build/perf/builtin-data.o
> > CC /tmp/build/perf/builtin-version.o
> > CC /tmp/build/perf/builtin-c2c.o
> > CC /tmp/build/perf/builtin-trace.o
> > CC /tmp/build/perf/builtin-probe.o
> > MKDIR /tmp/build/perf/bench/
> > CC /tmp/build/perf/bench/sched-messaging.o
> > MKDIR /tmp/build/perf/tests/
> > CC /tmp/build/perf/tests/builtin-test.o
> > MKDIR /tmp/build/perf/bench/
> > CC /tmp/build/perf/bench/sched-pipe.o
> > MKDIR /tmp/build/perf/util/
> > CC /tmp/build/perf/util/annotate.o
> > CC /tmp/build/perf/bench/mem-functions.o
> > CC /tmp/build/perf/arch/common.o
> > MKDIR /tmp/build/perf/tests/
> > MKDIR /tmp/build/perf/arch/x86/util/
> > CC /tmp/build/perf/arch/x86/util/header.o
> > CC /tmp/build/perf/bench/futex-hash.o
> > CC /tmp/build/perf/tests/parse-events.o
> > CC /tmp/build/perf/bench/futex-wake.o
> > MKDIR /tmp/build/perf/arch/x86/util/
> > CC /tmp/build/perf/arch/x86/util/tsc.o
> > CC /tmp/build/perf/arch/x86/util/pmu.o
> > CC /tmp/build/perf/arch/x86/util/kvm-stat.o
> > CC /tmp/build/perf/bench/futex-wake-parallel.o
> > CC /tmp/build/perf/arch/x86/util/perf_regs.o
> > CC /tmp/build/perf/bench/futex-requeue.o
> > CC /tmp/build/perf/bench/futex-lock-pi.o
> > CC /tmp/build/perf/arch/x86/util/group.o
> > CC /tmp/build/perf/arch/x86/util/machine.o
> > CC /tmp/build/perf/arch/x86/util/event.o
> > CC /tmp/build/perf/arch/x86/util/unwind-libunwind.o
> > CC /tmp/build/perf/arch/x86/util/auxtrace.o
> > CC /tmp/build/perf/bench/epoll-wait.o
> > MKDIR /tmp/build/perf/arch/x86/tests/
> > CC /tmp/build/perf/arch/x86/tests/regs_load.o
> > MKDIR /tmp/build/perf/util/
> > CC /tmp/build/perf/util/block-info.o
> > MKDIR /tmp/build/perf/arch/x86/tests/
> > CC /tmp/build/perf/arch/x86/tests/dwarf-unwind.o
> > CC /tmp/build/perf/arch/x86/util/archinsn.o
> > CC /tmp/build/perf/arch/x86/tests/arch-tests.o
> > CC /tmp/build/perf/bench/epoll-ctl.o
> > CC /tmp/build/perf/arch/x86/tests/rdpmc.o
> > CC /tmp/build/perf/tests/dso-data.o
> > CC /tmp/build/perf/arch/x86/util/intel-pt.o
> > CC /tmp/build/perf/arch/x86/tests/perf-time-to-tsc.o
> > CC /tmp/build/perf/bench/synthesize.o
> > CC /tmp/build/perf/util/block-range.o
> > CC /tmp/build/perf/bench/kallsyms-parse.o
> > CC /tmp/build/perf/arch/x86/tests/insn-x86.o
> > CC /tmp/build/perf/util/build-id.o
> > CC /tmp/build/perf/util/cacheline.o
> > CC /tmp/build/perf/bench/mem-memcpy-x86-64-lib.o
> > CC /tmp/build/perf/tests/attr.o
> > CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
> > CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o
> > CC /tmp/build/perf/util/config.o
> > CC /tmp/build/perf/arch/x86/util/intel-bts.o
> > LD /tmp/build/perf/bench/perf-in.o
> > CC /tmp/build/perf/arch/x86/tests/intel-pt-pkt-decoder-test.o
> > CC /tmp/build/perf/ui/setup.o
> > CC /tmp/build/perf/tests/vmlinux-kallsyms.o
> > CC /tmp/build/perf/arch/x86/tests/bp-modify.o
> > CC /tmp/build/perf/ui/helpline.o
> > LD /tmp/build/perf/arch/x86/util/perf-in.o
> > CC /tmp/build/perf/ui/progress.o
> > CC /tmp/build/perf/tests/openat-syscall.o
> > LD /tmp/build/perf/arch/x86/tests/perf-in.o
> > CC /tmp/build/perf/tests/openat-syscall-all-cpus.o
> > LD /tmp/build/perf/arch/x86/perf-in.o
> > LD /tmp/build/perf/arch/perf-in.o
> > CC /tmp/build/perf/tests/openat-syscall-tp-fields.o
> > CC /tmp/build/perf/ui/util.o
> > CC /tmp/build/perf/ui/hist.o
> > CC /tmp/build/perf/util/copyfile.o
> > CC /tmp/build/perf/tests/mmap-basic.o
> > MKDIR /tmp/build/perf/ui/stdio/
> > CC /tmp/build/perf/ui/stdio/hist.o
> > CC /tmp/build/perf/tests/perf-record.o
> > CC /tmp/build/perf/util/ctype.o
> > CC /tmp/build/perf/util/db-export.o
> > CC /tmp/build/perf/tests/evsel-roundtrip-name.o
> > CC /tmp/build/perf/tests/evsel-tp-sched.o
> > MKDIR /tmp/build/perf/scripts/perl/Perf-Trace-Util/
> > CC /tmp/build/perf/scripts/perl/Perf-Trace-Util/Context.o
> > CC /tmp/build/perf/tests/fdarray.o
> > CC /tmp/build/perf/tests/pmu.o
> > CC /tmp/build/perf/tests/pmu-events.o
> > CC /tmp/build/perf/tests/hists_common.o
> > CC /tmp/build/perf/tests/hists_link.o
> > LD /tmp/build/perf/scripts/perl/Perf-Trace-Util/perf-in.o
> > MKDIR /tmp/build/perf/scripts/python/Perf-Trace-Util/
> > CC /tmp/build/perf/ui/browser.o
> > CC /tmp/build/perf/scripts/python/Perf-Trace-Util/Context.o
> > CC /tmp/build/perf/tests/hists_filter.o
> > CC /tmp/build/perf/util/env.o
> > CC /tmp/build/perf/tests/hists_output.o
> > CC /tmp/build/perf/tests/hists_cumulate.o
> > LD /tmp/build/perf/scripts/python/Perf-Trace-Util/perf-in.o
> > LD /tmp/build/perf/scripts/perf-in.o
> > CC /tmp/build/perf/trace/beauty/clone.o
> > CC /tmp/build/perf/perf.o
> > CC /tmp/build/perf/trace/beauty/fcntl.o
> > MKDIR /tmp/build/perf/ui/browsers/
> > CC /tmp/build/perf/ui/browsers/annotate.o
> > CC /tmp/build/perf/util/event.o
> > CC /tmp/build/perf/tests/python-use.o
> > CC /tmp/build/perf/trace/beauty/flock.o
> > CC /tmp/build/perf/trace/beauty/fsmount.o
> > CC /tmp/build/perf/trace/beauty/fspick.o
> > CC /tmp/build/perf/trace/beauty/ioctl.o
> > CC /tmp/build/perf/trace/beauty/kcmp.o
> > CC /tmp/build/perf/tests/bp_signal.o
> > CC /tmp/build/perf/tests/bp_signal_overflow.o
> > CC /tmp/build/perf/trace/beauty/mount_flags.o
> > CC /tmp/build/perf/trace/beauty/move_mount.o
> > CC /tmp/build/perf/trace/beauty/pkey_alloc.o
> > CC /tmp/build/perf/trace/beauty/arch_prctl.o
> > CC /tmp/build/perf/trace/beauty/prctl.o
> > CC /tmp/build/perf/tests/bp_account.o
> > CC /tmp/build/perf/trace/beauty/renameat.o
> > CC /tmp/build/perf/tests/wp.o
> > CC /tmp/build/perf/tests/task-exit.o
> > CC /tmp/build/perf/util/evlist.o
> > CC /tmp/build/perf/trace/beauty/sockaddr.o
> > CC /tmp/build/perf/trace/beauty/socket.o
> > CC /tmp/build/perf/trace/beauty/statx.o
> > CC /tmp/build/perf/trace/beauty/sync_file_range.o
> > CC /tmp/build/perf/util/sideband_evlist.o
> > MKDIR /tmp/build/perf/ui/browsers/
> > CC /tmp/build/perf/ui/browsers/hists.o
> > CC /tmp/build/perf/ui/browsers/map.o
> > MKDIR /tmp/build/perf/trace/beauty/tracepoints/
> > CC /tmp/build/perf/trace/beauty/tracepoints/x86_irq_vectors.o
> > MKDIR /tmp/build/perf/trace/beauty/tracepoints/
> > CC /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
> > CC /tmp/build/perf/util/evsel.o
> > LD /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
> > LD /tmp/build/perf/trace/beauty/perf-in.o
> > CC /tmp/build/perf/tests/sw-clock.o
> > CC /tmp/build/perf/util/evsel_fprintf.o
> > CC /tmp/build/perf/util/perf_event_attr_fprintf.o
> > CC /tmp/build/perf/tests/mmap-thread-lookup.o
> > CC /tmp/build/perf/util/evswitch.o
> > CC /tmp/build/perf/tests/thread-maps-share.o
> > CC /tmp/build/perf/tests/switch-tracking.o
> > CC /tmp/build/perf/util/find_bit.o
> > CC /tmp/build/perf/util/get_current_dir_name.o
> > CC /tmp/build/perf/util/kallsyms.o
> > MKDIR /tmp/build/perf/ui/tui/
> > CC /tmp/build/perf/tests/keep-tracking.o
> > CC /tmp/build/perf/ui/tui/setup.o
> > CC /tmp/build/perf/util/levenshtein.o
> > CC /tmp/build/perf/util/llvm-utils.o
> > CC /tmp/build/perf/util/mmap.o
> > CC /tmp/build/perf/util/memswap.o
> > MKDIR /tmp/build/perf/ui/tui/
> > CC /tmp/build/perf/ui/tui/util.o
> > CC /tmp/build/perf/tests/code-reading.o
> > CC /tmp/build/perf/tests/sample-parsing.o
> > CC /tmp/build/perf/ui/tui/helpline.o
> > CC /tmp/build/perf/tests/parse-no-sample-id-all.o
> > CC /tmp/build/perf/ui/tui/progress.o
> > CC /tmp/build/perf/tests/kmod-path.o
> > CC /tmp/build/perf/tests/thread-map.o
> > LD /tmp/build/perf/ui/tui/perf-in.o
> > CC /tmp/build/perf/tests/llvm.o
> > CC /tmp/build/perf/tests/bpf.o
> > CC /tmp/build/perf/tests/topology.o
> > CC /tmp/build/perf/tests/mem.o
> > CC /tmp/build/perf/tests/cpumap.o
> > CC /tmp/build/perf/tests/stat.o
> > CC /tmp/build/perf/tests/event_update.o
> > CC /tmp/build/perf/ui/browsers/scripts.o
> > CC /tmp/build/perf/ui/browsers/header.o
> > CC /tmp/build/perf/tests/event-times.o
> > CC /tmp/build/perf/ui/browsers/res_sample.o
> > CC /tmp/build/perf/tests/expr.o
> > CC /tmp/build/perf/tests/backward-ring-buffer.o
> > CC /tmp/build/perf/tests/sdt.o
> > CC /tmp/build/perf/tests/is_printable_array.o
> > CC /tmp/build/perf/tests/bitmap.o
> > BISON /tmp/build/perf/util/parse-events-bison.c
> > CC /tmp/build/perf/tests/perf-hooks.o
> > CC /tmp/build/perf/tests/clang.o
> > CC /tmp/build/perf/util/perf_regs.o
> > CC /tmp/build/perf/tests/unit_number__scnprintf.o
> > CC /tmp/build/perf/tests/mem2node.o
> > CC /tmp/build/perf/tests/maps.o
> > CC /tmp/build/perf/tests/time-utils-test.o
> > CC /tmp/build/perf/tests/genelf.o
> > CC /tmp/build/perf/tests/api-io.o
> > CC /tmp/build/perf/tests/demangle-java-test.o
> > CC /tmp/build/perf/util/path.o
> > CC /tmp/build/perf/util/print_binary.o
> > CC /tmp/build/perf/tests/pfm.o
> > CC /tmp/build/perf/tests/parse-metric.o
> > CC /tmp/build/perf/util/rlimit.o
> > CC /tmp/build/perf/tests/dwarf-unwind.o
> > CC /tmp/build/perf/util/argv_split.o
> > CC /tmp/build/perf/util/rbtree.o
> > CC /tmp/build/perf/util/libstring.o
> > CC /tmp/build/perf/util/bitmap.o
> > CC /tmp/build/perf/tests/llvm-src-base.o
> > CC /tmp/build/perf/tests/llvm-src-kbuild.o
> > CC /tmp/build/perf/tests/llvm-src-prologue.o
> > CC /tmp/build/perf/tests/llvm-src-relocation.o
> > CC /tmp/build/perf/util/hweight.o
> > CC /tmp/build/perf/util/smt.o
> > CC /tmp/build/perf/util/strbuf.o
> > CC /tmp/build/perf/util/string.o
> > LD /tmp/build/perf/tests/perf-in.o
> > CC /tmp/build/perf/util/strlist.o
> > CC /tmp/build/perf/util/strfilter.o
> > CC /tmp/build/perf/util/top.o
> > CC /tmp/build/perf/util/usage.o
> > CC /tmp/build/perf/util/dso.o
> > CC /tmp/build/perf/util/dsos.o
> > CC /tmp/build/perf/util/symbol.o
> > CC /tmp/build/perf/util/symbol_fprintf.o
> > CC /tmp/build/perf/util/color.o
> > CC /tmp/build/perf/util/color_config.o
> > CC /tmp/build/perf/util/metricgroup.o
> > CC /tmp/build/perf/util/header.o
> > LD /tmp/build/perf/ui/browsers/perf-in.o
> > CC /tmp/build/perf/util/callchain.o
> > LD /tmp/build/perf/ui/perf-in.o
> > CC /tmp/build/perf/util/values.o
> > CC /tmp/build/perf/util/debug.o
> > CC /tmp/build/perf/util/fncache.o
> > CC /tmp/build/perf/util/machine.o
> > CC /tmp/build/perf/util/map.o
> > CC /tmp/build/perf/util/pstack.o
> > CC /tmp/build/perf/util/session.o
> > CC /tmp/build/perf/util/sample-raw.o
> > CC /tmp/build/perf/util/s390-sample-raw.o
> > CC /tmp/build/perf/util/syscalltbl.o
> > CC /tmp/build/perf/util/ordered-events.o
> > CC /tmp/build/perf/util/namespaces.o
> > CC /tmp/build/perf/util/comm.o
> > CC /tmp/build/perf/util/thread.o
> > CC /tmp/build/perf/util/thread_map.o
> > CC /tmp/build/perf/util/trace-event-parse.o
> > FLEX /tmp/build/perf/util/parse-events-flex.h
> > BISON /tmp/build/perf/util/pmu-bison.c
> > CC /tmp/build/perf/util/trace-event-read.o
> > CC /tmp/build/perf/util/trace-event-info.o
> > CC /tmp/build/perf/util/trace-event-scripting.o
> > CC /tmp/build/perf/util/trace-event.o
> > CC /tmp/build/perf/util/svghelper.o
> > CC /tmp/build/perf/util/sort.o
> > CC /tmp/build/perf/util/hist.o
> > CC /tmp/build/perf/util/util.o
> > CC /tmp/build/perf/util/cpumap.o
> > CC /tmp/build/perf/util/affinity.o
> > CC /tmp/build/perf/util/cputopo.o
> > CC /tmp/build/perf/util/cgroup.o
> > CC /tmp/build/perf/util/target.o
> > CC /tmp/build/perf/util/rblist.o
> > CC /tmp/build/perf/util/intlist.o
> > CC /tmp/build/perf/util/vdso.o
> > CC /tmp/build/perf/util/counts.o
> > CC /tmp/build/perf/util/stat.o
> > CC /tmp/build/perf/util/stat-shadow.o
> > CC /tmp/build/perf/util/stat-display.o
> > CC /tmp/build/perf/util/perf_api_probe.o
> > CC /tmp/build/perf/util/record.o
> > CC /tmp/build/perf/util/srcline.o
> > CC /tmp/build/perf/util/srccode.o
> > CC /tmp/build/perf/util/synthetic-events.o
> > CC /tmp/build/perf/util/data.o
> > CC /tmp/build/perf/util/tsc.o
> > CC /tmp/build/perf/util/cloexec.o
> > CC /tmp/build/perf/util/call-path.o
> > CC /tmp/build/perf/util/rwsem.o
> > CC /tmp/build/perf/util/thread-stack.o
> > CC /tmp/build/perf/util/spark.o
> > CC /tmp/build/perf/util/auxtrace.o
> > MKDIR /tmp/build/perf/util/intel-pt-decoder/
> > CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o
> > MKDIR /tmp/build/perf/util/intel-pt-decoder/
> > GEN /tmp/build/perf/util/intel-pt-decoder/inat-tables.c
> > MKDIR /tmp/build/perf/util/arm-spe-decoder/
> > CC /tmp/build/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.o
> > MKDIR /tmp/build/perf/util/scripting-engines/
> > CC /tmp/build/perf/util/scripting-engines/trace-event-perl.o
> > CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-log.o
> > CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o
> > MKDIR /tmp/build/perf/util/arm-spe-decoder/
> > MKDIR /tmp/build/perf/util/scripting-engines/
> > CC /tmp/build/perf/util/arm-spe-decoder/arm-spe-decoder.o
> > CC /tmp/build/perf/util/scripting-engines/trace-event-python.o
> > LD /tmp/build/perf/util/arm-spe-decoder/perf-in.o
> > CC /tmp/build/perf/util/intel-pt.o
> > CC /tmp/build/perf/util/intel-bts.o
> > CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-insn-decoder.o
> > CC /tmp/build/perf/util/arm-spe.o
> > CC /tmp/build/perf/util/s390-cpumsf.o
> > CC /tmp/build/perf/util/parse-branch-options.o
> > CC /tmp/build/perf/util/dump-insn.o
> > CC /tmp/build/perf/util/parse-regs-options.o
> > CC /tmp/build/perf/util/term.o
> > CC /tmp/build/perf/util/help-unknown-cmd.o
> > CC /tmp/build/perf/util/mem-events.o
> > CC /tmp/build/perf/util/vsprintf.o
> > CC /tmp/build/perf/util/units.o
> > CC /tmp/build/perf/util/time-utils.o
> > BISON /tmp/build/perf/util/expr-bison.c
> > CC /tmp/build/perf/util/branch.o
> > CC /tmp/build/perf/util/mem2node.o
> > CC /tmp/build/perf/util/bpf-loader.o
> > CC /tmp/build/perf/util/bpf_map.o
> > LD /tmp/build/perf/util/intel-pt-decoder/perf-in.o
> > LD /tmp/build/perf/util/scripting-engines/perf-in.o
> > CC /tmp/build/perf/util/symbol-elf.o
> > CC /tmp/build/perf/util/probe-file.o
> > CC /tmp/build/perf/util/probe-event.o
> > CC /tmp/build/perf/util/unwind-libunwind-local.o
> > CC /tmp/build/perf/util/unwind-libunwind.o
> > CC /tmp/build/perf/util/zlib.o
> > CC /tmp/build/perf/util/lzma.o
> > CC /tmp/build/perf/util/zstd.o
> > CC /tmp/build/perf/util/cap.o
> > CC /tmp/build/perf/util/demangle-java.o
> > CC /tmp/build/perf/util/demangle-rust.o
> > CC /tmp/build/perf/util/jitdump.o
> > CC /tmp/build/perf/util/genelf.o
> > CC /tmp/build/perf/util/perf-hooks.o
> > CC /tmp/build/perf/util/bpf-event.o
> > FLEX /tmp/build/perf/util/parse-events-flex.c
> > CC /tmp/build/perf/util/parse-events-bison.o
> > FLEX /tmp/build/perf/util/pmu-flex.c
> > CC /tmp/build/perf/util/pmu-bison.o
> > FLEX /tmp/build/perf/util/expr-flex.c
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:546:0: error: unterminated #else
> > #ifndef YY_READ_BUF_SIZE
> >
> > /tmp/build/perf/util/parse-events-flex.h:545:0: error: unterminated #ifndef
> > /* Amount of stuff to slurp up with each read. */
> >
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:1:0: error: unterminated #ifndef
> > #ifndef parse_events_HEADER_H
> >
> > mv: can't rename '/tmp/build/perf/util/.parse-events-bison.o.tmp': No such file or directory
> > make[4]: *** [/git/linux/tools/build/Makefile.build:96: /tmp/build/perf/util/parse-events-bison.o] Error 1
> > make[4]: *** Waiting for unfinished jobs....
> > make[3]: *** [/git/linux/tools/build/Makefile.build:139: util] Error 2
> > make[2]: *** [Makefile.perf:625: /tmp/build/perf/perf-in.o] Error 2
> > make[1]: *** [Makefile.perf:231: sub-make] Error 2
> > make: *** [Makefile:70: all] Error 2
> > make: Leaving directory '/git/linux/tools/perf'
> >
> >
> > 1 alpine:3.4 : FAIL gcc (Alpine 5.3.0) 5.3.0, clang version 3.8.0 (tags/RELEASE_380/final)
> > 2 alpine:3.5 : FAIL gcc (Alpine 6.2.1) 6.2.1 20160822, clang version 3.8.1 (tags/RELEASE_381/final)
> >
> > CC /tmp/build/perf/util/parse-events-bison.o
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:323:0: error: unterminated #ifndef
> > #ifndef YY_DECL
> > ^
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:1:0: error: unterminated #ifndef
> > #ifndef parse_events_HEADER_H
> > ^
> > mv: can't rename '/tmp/build/perf/util/.parse-events-bison.o.tmp': No such file or directory
> > /git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/util/parse-events-bison.o' failed
> > make[4]: *** [/tmp/build/perf/util/parse-events-bison.o] Error 1
> > make[4]: *** Waiting for unfinished jobs....
> > LD /tmp/build/perf/util/intel-pt-decoder/perf-in.o
> > /git/linux/tools/build/Makefile.build:139: recipe for target 'util' failed
> >
> > Slightly different:
> >
> > 3 alpine:3.6 : FAIL gcc (Alpine 6.3.0) 6.3.0, clang version 4.0.0 (tags/RELEASE_400/final)
> >
> > CC /tmp/build/perf/util/perf-hooks.o
> > FLEX /tmp/build/perf/util/parse-events-flex.c
> > CC /tmp/build/perf/util/parse-events-bison.o
> > FLEX /tmp/build/perf/util/pmu-flex.c
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:1:0: error: unterminated #ifndef
> > #ifndef parse_events_HEADER_H
> >
> > mv: can't rename '/tmp/build/perf/util/.parse-events-bison.o.tmp': No such file or directory
> > make[4]: *** [/git/linux/tools/build/Makefile.build:97: /tmp/build/perf/util/parse-events-bison.o] Error 1
> > make[4]: *** Waiting for unfinished jobs....
> >
> >
> > 4 alpine:3.7 : FAIL gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.0 (tags/RELEASE_500/final) (based on LLVM 5.0.0)
> >
> > CC /tmp/build/perf/util/pmu-bison.o
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:546:0: error: unterminated #else
> > #ifndef YY_READ_BUF_SIZE
> >
> > /tmp/build/perf/util/parse-events-flex.h:545:0: error: unterminated #ifndef
> > /* Amount of stuff to slurp up with each read. */
> >
> > In file included from util/parse-events.y:20:0:
> > /tmp/build/perf/util/parse-events-flex.h:1:0: error: unterminated #ifndef
> > #ifndef parse_events_HEADER_H
> >
> > FLEX /tmp/build/perf/util/expr-flex.c
> > mv: can't rename '/tmp/build/perf/util/.parse-events-bison.o.tmp': No such file or directory
> > make[4]: *** [/git/linux/tools/build/Makefile.build:96: /tmp/build/perf/util/parse-events-bison.o] Error 1
> >
> >
>
> --
>
> - Arnaldo

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