Em Mon, Aug 31, 2015 at 02:09:41PM +0000, Wang Nan escreveu: > Cross compiling perf to other platform failed due to missing symbol:
Adrian, I think this one covers what you would resend, no? If it does, can I have your Acked-by? - Arnaldo > ... > AR /pathofperf/libperf.a > LD /pathofperf/tests/perf-in.o > LD /pathofperf/perf-in.o > LINK /pathofperf/perf > /pathofperf/libperf.a(libperf-in.o): In function > `intel_pt_synth_branch_sample': > /usr/src/kernel/tools/perf/util/intel-pt.c:899: undefined reference to > `tsc_to_perf_time' > /pathofperf/libperf.a(libperf-in.o): In function > `intel_pt_synth_transaction_sample': > /usr/src/kernel/tools/perf/util/intel-pt.c:992: undefined reference to > `tsc_to_perf_time' > /pathofperf/libperf.a(libperf-in.o): In function > `intel_pt_synth_instruction_sample': > /usr/src/kernel/tools/perf/util/intel-pt.c:943: undefined reference to > `tsc_to_perf_time' > ... > > This is because we allow newly introduced intel-pt-decoder to be > compiled to not only X86, but tsc.c which required by it is compiled > for x86 only. > > This patch fix the compiling error by allow tsc.c to be compiled if > CONFIG_AUXTRACE is set, no matter the target platform. > > Comment from Arnaldo: > > There were some changes in this area, i.e. x86 needs tsc, and auxtrace > as well, so both should express that via: > > libperf-$(CONFIG_X86) += tsc.o > libperf-$(CONFIG_AUXTRACE) += tsc.o > > Because on !x86 we want to process perf.data files containing Intel PT. > > Signed-off-by: Wang Nan <wangn...@huawei.com> > Cc: Arnaldo Carvalho de Melo <a...@redhat.com> > --- > tools/perf/util/Build | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/tools/perf/util/Build b/tools/perf/util/Build > index fd2f084..e712311 100644 > --- a/tools/perf/util/Build > +++ b/tools/perf/util/Build > @@ -75,6 +75,7 @@ libperf-y += record.o > libperf-y += srcline.o > libperf-y += data.o > libperf-$(CONFIG_X86) += tsc.o > +libperf-$(CONFIG_AUXTRACE) += tsc.o > libperf-y += cloexec.o > libperf-y += thread-stack.o > libperf-$(CONFIG_AUXTRACE) += auxtrace.o > -- > 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
