linux-kernel - Re: [PATCH] tools build: Add missing libcap to test-all.bin target

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Date:   Fri, 4 Dec 2020 09:24:30 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH] tools build: Add missing libcap to test-all.bin target

Em Fri, Dec 04, 2020 at 12:08:36AM +0100, Jiri Olsa escreveu:
> We're missing -lcap in test-all.bin target, so in case it's
> the only library missing (if more are missing test-all.bin
> fails anyway), we will falsely claim that we detected it and
> fail build, like:

Thanks, applied.

- Arnaldo

 
>   $ make
>   ...
>   Auto-detecting system features:
>   ...                         dwarf: [ on  ]
>   ...            dwarf_getlocations: [ on  ]
>   ...                         glibc: [ on  ]
>   ...                        libbfd: [ on  ]
>   ...                libbfd-buildid: [ 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  ]
> 
>   ...
> 
>     CC       builtin-ftrace.o
> 
>   In file included from builtin-ftrace.c:29:
>   util/cap.h:11:10: fatal error: sys/capability.h: No such file or directory
>      11 | #include <sys/capability.h>
>         |          ^~~~~~~~~~~~~~~~~~
>   compilation terminated.
> 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/build/feature/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
> index cdde783f3018..89ba522e377d 100644
> --- a/tools/build/feature/Makefile
> +++ b/tools/build/feature/Makefile
> @@ -90,7 +90,7 @@ __BUILDXX = $(CXX) $(CXXFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(
>  ###############################
>  
>  $(OUTPUT)test-all.bin:
> -	$(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -I/usr/include/slang -lslang $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -llzma -lzstd
> +	$(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -I/usr/include/slang -lslang $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -llzma -lzstd -lcap
>  
>  $(OUTPUT)test-hello.bin:
>  	$(BUILD)
> -- 
> 2.26.2
> 

-- 

- Arnaldo