Re: [PATCH v2] tools build: Check libasan and libubsan in Makefile.feature

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Mon, Jun 15, 2020 at 10:20:10AM +0800, Tiezhu Yang escreveu:
> On 06/03/2020 07:32 PM, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Jun 03, 2020 at 02:10:04PM +0800, Tiezhu Yang escreveu:
> > > 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@linux 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@linux 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@loongson.cn>
> > > ---
> > > 
> > > v2:
> > >    - Check libasan and libubsan in tools/build/Makefile.feature
> > >    - Modify the patch subject
> > > 
> > >   tools/build/Makefile.feature | 7 +++++++
> > >   1 file changed, 7 insertions(+)
> > > 
> > > diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
> > > index 3abd431..e147c17 100644
> > > --- a/tools/build/Makefile.feature
> > > +++ b/tools/build/Makefile.feature
> > > @@ -252,3 +252,10 @@ ifeq ($(feature_verbose),1)
> > >     $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
> > >     $(info )
> > >   endif
> > > +
> > > +ifneq ($(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
> > Hey, we need to only do that if -fsanitize=address is in EXTRA_CFLAGS,
> > right?
> 
> Sorry for the late reply.
> Maybe -fsanitize=undefined is also needed.
> Please reference tools/perf/Documentation/Build.txt

Can you send an updated patch then?
 
> > 
> > I applied it and got:
> > 
> >    $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf
> >    $ make O=/tmp/build/perf -C tools/perf install-bin
> >    make: Entering directory '/home/acme/git/perf/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
> >    Warning: Kernel ABI header at 'tools/perf/util/hashmap.h' differs from latest version at 'tools/lib/bpf/hashmap.h'
> >    diff -u tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h
> >    Warning: Kernel ABI header at 'tools/perf/util/hashmap.c' differs from latest version at 'tools/lib/bpf/hashmap.c'
> >    diff -u tools/perf/util/hashmap.c tools/lib/bpf/hashmap.c
> >    Auto-detecting system features:
> >    ...                         dwarf: [ on  ]
> >    ...            dwarf_getlocations: [ on  ]
> >    ...                         glibc: [ on  ]
> >    ...                          gtk2: [ on  ]
> >    ...                        libbfd: [ on  ]
> >    ...                        libcap: [ on  ]
> >    ...                        libelf: [ on  ]
> >    ...                       libnuma: [ on  ]
> >    ...        numa_num_possible_cpus: [ on  ]
> >    ...                       libperl: [ on  ]
> >    ...                     libpython: [ on  ]
> >    ...                     libcrypto: [ on  ]
> >    ...                     libunwind: [ on  ]
> >    ...            libdw-dwarf-unwind: [ on  ]
> >    ...                          zlib: [ on  ]
> >    ...                          lzma: [ on  ]
> >    ...                     get_cpuid: [ on  ]
> >    ...                           bpf: [ on  ]
> >    ...                        libaio: [ on  ]
> >    ...                       libzstd: [ on  ]
> >    ...        disassembler-four-args: [ on  ]
> >    /home/acme/git/perf/tools/build/Makefile.feature:255: *** No libasan found, please install libasan.  Stop.
> >    make[1]: *** [Makefile.perf:231: sub-make] Error 2
> >    make: *** [Makefile:110: install-bin] Error 2
> >    make: Leaving directory '/home/acme/git/perf/tools/perf'
> >    $
> > 
> > Something enclosed in:
> > 
> > 	ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
> > 
> > Right Jiri?
> > 
> > - Arnaldo
> 

-- 

- Arnaldo