Bug#876787: afl: FTBFS /usr/bin/ld: unrecognized option '--no-keep-files-mapped'

[Sylvestre Ledru]

Le 26/09/2017 à 01:24, Adrian Bunk a écrit :
> Control: reassign -1 clang-3.9 1:3.9.1-16
> Control: affects -1 src:afl
> Control: clone -1 -2 -3
> Control: reassign -2 clang-4.0 1:4.0.1-5
> Control: reassign -3 clang-5.0 1:5.0-2
>
> On Mon, Sep 25, 2017 at 10:47:22PM +0200, Daniel Stender wrote:
>> Package: src:afl
>> Version: 2.50b-1
>> Severity: serious
>> Justification: fails to build from source (but built successfully in the past)
>> Control: block 873404 by -1
>>
>> AFL begun to FTBFS recently with a clang error:
>>
>> <cut>
>> [+] All set and ready to build.
>> clang-3.9  -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DAFL_PATH=\"/usr/lib/afl\" -DBIN_PATH=\"/usr/bin\" -DVERSION=\"2.50b\"  afl-clang-fast.c -o ../afl-clang-fast -Wl,-z,relro -Wl,-z,now
>> ln -sf afl-clang-fast ../afl-clang-fast++
>> clang++-3.9 `llvm-config-3.9 --cxxflags` -fno-rtti -fpic  -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign -DVERSION=\"2.50b\" -Wno-variadic-macros -shared afl-llvm-pass.so.cc -o ../afl-llvm-pass.so `llvm-config-3.9 --ldflags` -Wl,-z,relro -Wl,-z,now
>> warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
>> 1 warning generated.
>> /usr/bin/ld: unrecognized option '--no-keep-files-mapped'
>> /usr/bin/ld: use the --help option for usage information
>> clang: error: linker command failed with exit code 1 (use -v to see invocation)
>> Makefile:83: recipe for target '../afl-llvm-pass.so' failed
>> </cut>
>>
>> This seems to be a problem in the build toolchain (this is going to be
>> reassigned). The same error appears also with clang-4.0 and clang-5.0, thus
>> blocking the llvm-toolchain update of AFL.
> The trigger is:
>
> llvm-toolchain-3.9 (1:3.9.1-16) unstable; urgency=medium
> ...
>   [ Matthias Klose ]
>   * Link with --no-keep-files-mapped --no-map-whole-files when using gold.
> ...
>  -- Sylvestre Ledru <sylvestre at debian.org>  Fri, 08 Sep 2017 11:57:07 +0200
>
>
> But the actual bug is older:
> 	CXXFLAGS_EXTRA += -Wl,-fuse-ld=gold -Wl,--no-keep-files-mapped -Wl,--no-map-whole-files
>
> -Wl,-fuse-ld=gold is wrong, this should be -fuse-ld=gold
> (it cannot work to tell the linker which linker to use).

ok, well spoted.


llvm-config exports the flags which has been used to build llvm.


Thanks,
S

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