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    SubjectRe: [PATCH v1 02/13] perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL
    Em Fri, Mar 10, 2023 at 10:57:42PM -0800, Ian Rogers escreveu:
    > BPF skeleton support is now key to a number of perf features. Rather
    > than making it so that BPF support must be enabled for the build, make
    > this the default and error if the build lacks a clang and libbpf that
    > are sufficient. To avoid the error and build without BPF skeletons the
    > NO_BPF_SKEL=1 flag can be used. Add a build-options flag to 'perf
    > version' to enable detection of the BPF skeleton support and use this
    > in the offcpu shell test.

    Checking this:

    cd . && make LIBBPF_DYNAMIC=1 FEATURES_DUMP=/var/home/acme/git/perf-tools-next/tools/perf/BUILD_TEST_FEATURE_DUMP -j32 O=/tmp/tmp.Rr5xDuXo13 DESTDIR=/tmp/tmp.cYdDvy09eY
    BUILD: Doing 'make -j32' parallel build
    HOSTCC /tmp/tmp.Rr5xDuXo13/fixdep.o
    HOSTLD /tmp/tmp.Rr5xDuXo13/fixdep-in.o
    LINK /tmp/tmp.Rr5xDuXo13/fixdep
    Warning: Kernel ABI header at 'tools/include/uapi/linux/in.h' differs from latest version at 'include/uapi/linux/in.h'
    diff -u tools/include/uapi/linux/in.h include/uapi/linux/in.h
    Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
    diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h
    Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/perf_regs.h' differs from latest version at 'arch/arm64/include/uapi/asm/perf_regs.h'
    diff -u tools/arch/arm64/include/uapi/asm/perf_regs.h arch/arm64/include/uapi/asm/perf_regs.h
    Warning: Kernel ABI header at 'tools/include/linux/coresight-pmu.h' differs from latest version at 'include/linux/coresight-pmu.h'
    diff -u tools/include/linux/coresight-pmu.h include/linux/coresight-pmu.h
    Makefile.config:1130: No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel

    GEN /tmp/tmp.Rr5xDuXo13/common-cmds.h
    CC /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-test-api-v0.o
    CC /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-show-cycles.o
    LINK /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-test-api-v0.so
    LINK /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-show-cycles.so
    INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/exec-cmd.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/help.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/pager.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/parse-options.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/run-command.h
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/exec-cmd.o
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/help.o
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/pager.o
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/parse-options.o
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/run-command.o
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/sigchain.o
    CC /tmp/tmp.Rr5xDuXo13/libsubcmd/subcmd-config.o
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/
    INSTALL libsubcmd_headers
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/hashmap.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/relo_core.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_internal.h
    PERF_VERSION = 6.3.rc1.g0b82b38b7b56
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/bpf_perf.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/core.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/cpumap.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/threadmap.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libsymbol/include/symbol/kallsyms.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/cpu.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/evlist.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/debug.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/evsel.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/io.h
    GEN perf-archive
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/event.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/fd/array.h
    GEN perf-iostat
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/mmap.h
    CC /tmp/tmp.Rr5xDuXo13/libperf/core.o
    CC /tmp/tmp.Rr5xDuXo13/libsymbol/kallsyms.o
    CC /tmp/tmp.Rr5xDuXo13/libapi/cpu.o
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/cpumap.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/fs/fs.h
    INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/fs/tracing_path.h
    MKDIR /tmp/tmp.Rr5xDuXo13/libapi/fd/
    CC /tmp/tmp.Rr5xDuXo13/libapi/debug.o
    CC /tmp/tmp.Rr5xDuXo13/libapi/str_error_r.o
    CC /tmp/tmp.Rr5xDuXo13/libperf/cpumap.o
    INSTALL libsymbol_headers
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/evlist.h
    CC /tmp/tmp.Rr5xDuXo13/libperf/threadmap.o
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/evsel.h
    CC /tmp/tmp.Rr5xDuXo13/libperf/evsel.o
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/lib.h
    CC /tmp/tmp.Rr5xDuXo13/libperf/evlist.o
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/mmap.h
    MKDIR /tmp/tmp.Rr5xDuXo13/libapi/fs/
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/threadmap.h
    CC /tmp/tmp.Rr5xDuXo13/libapi/fd/array.o
    MKDIR /tmp/tmp.Rr5xDuXo13/libapi/fs/
    CC /tmp/tmp.Rr5xDuXo13/libperf/mmap.o
    INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/xyarray.h
    CC /tmp/tmp.Rr5xDuXo13/libapi/fs/fs.o
    CC /tmp/tmp.Rr5xDuXo13/libperf/zalloc.o
    CC /tmp/tmp.Rr5xDuXo13/libperf/xyarray.o
    CC /tmp/tmp.Rr5xDuXo13/libapi/fs/cgroup.o
    CC /tmp/tmp.Rr5xDuXo13/libperf/lib.o
    INSTALL libapi_headers
    CC /tmp/tmp.Rr5xDuXo13/libapi/fs/tracing_path.o
    INSTALL libperf_headers
    GEN /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/bpf_helper_defs.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/btf.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_common.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_legacy.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_helpers.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_tracing.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_endian.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_core_read.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/skel_internal.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/libbpf_version.h
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/usdt.bpf.h
    LD /tmp/tmp.Rr5xDuXo13/libapi/fd/libapi-in.o
    LD /tmp/tmp.Rr5xDuXo13/libsymbol/libsymbol-in.o
    AR /tmp/tmp.Rr5xDuXo13/libsymbol/libsymbol.a
    LD /tmp/tmp.Rr5xDuXo13/libapi/fs/libapi-in.o
    INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include/bpf/bpf_helper_defs.h
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    INSTALL libbpf_headers
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    LD /tmp/tmp.Rr5xDuXo13/libapi/libapi-in.o
    MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/bpf.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf_probes.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/hashmap.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/nlattr.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/btf_dump.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/btf.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf_errno.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/str_error.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/netlink.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ringbuf.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/bpf_prog_linfo.o
    LD /tmp/tmp.Rr5xDuXo13/libperf/libperf-in.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/strset.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/linker.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/gen_loader.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/relo_core.o
    AR /tmp/tmp.Rr5xDuXo13/libapi/libapi.a
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/usdt.o
    AR /tmp/tmp.Rr5xDuXo13/libperf/libperf.a
    LD /tmp/tmp.Rr5xDuXo13/libsubcmd/libsubcmd-in.o
    AR /tmp/tmp.Rr5xDuXo13/libsubcmd/libsubcmd.a
    GEN /tmp/tmp.Rr5xDuXo13/python/perf.cpython-311-x86_64-linux-gnu.so
    LD /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf-in.o
    LINK /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/libbpf.a
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/main.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/common.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/json_writer.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/gen.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/btf.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/xlated_dumper.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/btf_dumper.o
    CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/disasm.o
    LINK /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/bpftool
    GEN /tmp/tmp.Rr5xDuXo13/util/bpf_skel/vmlinux.h
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bpf_prog_profiler.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_leader.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_follower.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_cgroup.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/func_latency.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/off_cpu.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/lock_contention.bpf.o
    CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/kwork_trace.bpf.o
    util/bpf_skel/lock_contention.bpf.c:192:7: error: call to undeclared function 'bpf_core_type_matches'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
    if (bpf_core_type_matches(struct rw_semaphore___old)) {
    ^
    util/bpf_skel/lock_contention.bpf.c:192:29: error: expected expression
    if (bpf_core_type_matches(struct rw_semaphore___old)) {
    ^
    util/bpf_skel/lock_contention.bpf.c:195:36: error: expected expression
    } else if (bpf_core_type_matches(struct rw_semaphore___new)) {
    ^
    3 errors generated.
    /usr/bin/ld: bpf architecture of input file `/tmp/bperf_follower-74fba5.o' is incompatible with i386:x86-64 output
    /usr/bin/ld: bpf architecture of input file `/tmp/bperf_leader-b2ec61.o' is incompatible with i386:x86-64 output
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    collect2: error: ld returned 1 exit status
    collect2: error: ld returned 1 exit status
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    /usr/bin/ld: bpf architecture of input file `/tmp/func_latency-70b7d4.o' is incompatible with i386:x86-64 output
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/lock_contention.bpf.o] Error 1
    make[4]: *** Waiting for unfinished jobs....
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_follower.bpf.o] Error 1
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_leader.bpf.o] Error 1
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    collect2: error: ld returned 1 exit status
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/func_latency.bpf.o] Error 1
    /usr/bin/ld: bpf architecture of input file `/tmp/bpf_prog_profiler-6e9720.o' is incompatible with i386:x86-64 output
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    collect2: error: ld returned 1 exit status
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bpf_prog_profiler.bpf.o] Error 1
    /usr/bin/ld: bpf architecture of input file `/tmp/kwork_trace-8d5b4e.o' is incompatible with i386:x86-64 output
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    collect2: error: ld returned 1 exit status
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/kwork_trace.bpf.o] Error 1
    /usr/bin/ld: bpf architecture of input file `/tmp/off_cpu-1cb75d.o' is incompatible with i386:x86-64 output
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    collect2: error: ld returned 1 exit status
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/off_cpu.bpf.o] Error 1
    /usr/bin/ld: bpf architecture of input file `/tmp/bperf_cgroup-45eb44.o' is incompatible with i386:x86-64 output
    /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o: in function `_start':
    (.text+0x1b): undefined reference to `main'
    /usr/bin/ld: final link failed: file in wrong format
    collect2: error: ld returned 1 exit status
    clang-15: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_cgroup.bpf.o] Error 1
    make[3]: *** [Makefile.perf:236: sub-make] Error 2
    make[2]: *** [Makefile:70: all] Error 2
    make[1]: *** [tests/make:326: make_libbpf_dynamic_O] Error 1
    make: *** [Makefile:103: build-test] Error 2
    make: Leaving directory '/var/home/acme/git/perf-tools-next/tools/perf'

    real 5m55.192s
    user 62m31.596s
    sys 14m30.828s
    ⬢[acme@toolbox perf-tools-next]$


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