linux-kernel - Re: [PATCH 1/2] perf tools: check libasan and libubsan in Makefile.config

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Message-ID: <35e55bec-1f8a-0e8f-798b-bab51ad30797@loongson.cn>
Date:   Wed, 3 Jun 2020 10:01:27 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH 1/2] perf tools: check libasan and libubsan in
 Makefile.config

On 06/02/2020 10:15 PM, Jiri Olsa wrote:
> On Tue, Jun 02, 2020 at 12:15:03PM +0800, Tiezhu Yang wrote:
>> When build perf with ASan or UBSan, if libasan or libubsan can not find,
>> the feature-glibc is 0 and there exists the following error log which is
>> wrong, because we can find gnu/libc-version.h in /usr/include, glibc-devel
>> is also installed.
>>
>> [yangtiezhu@...ux perf]$ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address'
>>    BUILD:   Doing 'make -j4' parallel build
>>    HOSTCC   fixdep.o
>>    HOSTLD   fixdep-in.o
>>    LINK     fixdep
>> <stdin>:1:0: warning: -fsanitize=address and -fsanitize=kernel-address are not supported for this target
>> <stdin>:1:0: warning: -fsanitize=address not supported for this target
>>
>> Auto-detecting system features:
>> ...                         dwarf: [ OFF ]
>> ...            dwarf_getlocations: [ OFF ]
>> ...                         glibc: [ OFF ]
>> ...                          gtk2: [ OFF ]
>> ...                      libaudit: [ OFF ]
>> ...                        libbfd: [ OFF ]
>> ...                        libcap: [ OFF ]
>> ...                        libelf: [ OFF ]
>> ...                       libnuma: [ OFF ]
>> ...        numa_num_possible_cpus: [ OFF ]
>> ...                       libperl: [ OFF ]
>> ...                     libpython: [ OFF ]
>> ...                     libcrypto: [ OFF ]
>> ...                     libunwind: [ OFF ]
>> ...            libdw-dwarf-unwind: [ OFF ]
>> ...                          zlib: [ OFF ]
>> ...                          lzma: [ OFF ]
>> ...                     get_cpuid: [ OFF ]
>> ...                           bpf: [ OFF ]
>> ...                        libaio: [ OFF ]
>> ...                       libzstd: [ OFF ]
>> ...        disassembler-four-args: [ OFF ]
>>
>> Makefile.config:393: *** No gnu/libc-version.h found, please install glibc-dev[el].  Stop.
>> Makefile.perf:224: recipe for target 'sub-make' failed
>> make[1]: *** [sub-make] Error 2
>> Makefile:69: recipe for target 'all' failed
>> make: *** [all] Error 2
>> [yangtiezhu@...ux perf]$ ls /usr/include/gnu/libc-version.h
>> /usr/include/gnu/libc-version.h
>>
>> After install libasan and libubsan, the feature-glibc is 1 and the build
>> process is success, so the cause is related with libasan or libubsan, we
>> should check them and print an error log to reflect the reality.
>>
>> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
>> ---
>>   tools/perf/Makefile.config | 6 ++++++
>>   1 file changed, 6 insertions(+)
>>
>> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
>> index 12a8204..b699d21 100644
>> --- a/tools/perf/Makefile.config
>> +++ b/tools/perf/Makefile.config
>> @@ -387,6 +387,12 @@ else
>>         NO_LIBBPF := 1
>>         NO_JVMTI := 1
>>       else
>> +      ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
>> +        msg := $(error No libasan found, please install libasan);
>> +      endif
>> +      ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
>> +        msg := $(error No libubsan found, please install libubsan);
>> +      endif
> hum, would it be better to have check for this in tools/build/features?

Hi Jiri,

Thanks for your suggestion.

Do you mean that it is better to add this check at the end of file
tools/build/Makefile.feature?

>
> jirka
>
>>         ifneq ($(filter s% -static%,$(LDFLAGS),),)
>>           msg := $(error No static glibc found, please install glibc-static);
>>         else
>> -- 
>> 2.1.0
>>