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

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Message-ID: <20200602141551.GC1169993@krava>
Date:   Tue, 2 Jun 2020 16:15:51 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
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 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?

jirka

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