clang sparc: generated .o file incompatible with elf64-x86-64

suyash singh suyashsingh234 at gmail.com
Mon May 4 16:24:16 UTC 2020 

>
> Have you seen that?
>
> https://stackoverflow.com/questions/19118854/unable-to-cross-compile-to-sparc-using-clang
> I’m not sure sparc backend is well supported by clang/llvm. Try with
> riscv.


Yes I saw. It is old post, I have clang 11 and it is detecting sparc as a
target so I thought clang supports sparc

I am trying with riscv, clang riscv files are missing so I need to fix. I
got same issue with UBSan initially and fixed it by pasting UBSan files in
correct location(clang puts them in wrong location)

I am documenting everything here
https://github.com/suyashsingh234/rtems-notes/blob/master/README.md

On Mon, May 4, 2020 at 9:41 PM suyash singh <suyashsingh234 at gmail.com>
wrote:

> with sparc-unknown-rtems5
>
> clang version 11.0.0 (https://github.com/llvm/llvm-project.git
> 05606329e2353e37492bcf567ab4a4b27bceb65c)
> Target: sparc-unknown-rtems5
> Thread model: posix
> InstalledDir: /home/suyash/Desktop/clanganalyzer/llvm-project/build2/bin
>  "/home/suyash/Desktop/clanganalyzer/llvm-project/build2/bin/clang-11"
> -cc1 -triple sparc-unknown-rtems5 -emit-obj -mrelax-all -disable-free
> -main-file-name test1.c -mrelocation-model static -mthread-model posix
> -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases
> -mfloat-abi hard -dwarf-column-info -fno-split-dwarf-inlining
> -debugger-tuning=gdb -v -resource-dir
> /home/suyash/Desktop/clanganalyzer/llvm-project/build2/lib/clang/11.0.0
> -fdebug-compilation-dir /home/suyash/Desktop/clangtest -ferror-limit 19
> -fmessage-length 0
> -fsanitize=alignment,array-bounds,bool,builtin,enum,float-cast-overflow,integer-divide-by-zero,nonnull-attribute,null,pointer-overflow,return,returns-nonnull-attribute,shift-base,shift-exponent,signed-integer-overflow,unreachable,vla-bound
> -fsanitize-recover=alignment,array-bounds,bool,builtin,enum,float-cast-overflow,integer-divide-by-zero,nonnull-attribute,null,pointer-overflow,returns-nonnull-attribute,shift-base,shift-exponent,signed-integer-overflow,vla-bound
> -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fdiagnostics-show-option
> -fcolor-diagnostics -faddrsig -o /tmp/test1-ffe267.o -x c test1.c
> clang -cc1 version 11.0.0 based upon LLVM 11.0.0git default target
> x86_64-unknown-linux-gnu
> #include "..." search starts here:
> #include <...> search starts here:
>  /usr/local/include
>
>  /home/suyash/Desktop/clanganalyzer/llvm-project/build2/lib/clang/11.0.0/include
> End of search list.
>  "/usr/bin/gcc" -fuse-ld=lld -fsanitize=undefined -v -o a.out
> /tmp/test1-ffe267.o
> Using built-in specs.
> COLLECT_GCC=/usr/bin/gcc
> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
> OFFLOAD_TARGET_NAMES=nvptx-none
> OFFLOAD_TARGET_DEFAULT=1
> Target: x86_64-linux-gnu
> Configured with: ../src/configure -v --with-pkgversion='Ubuntu
> 7.5.0-3ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
> --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
> --with-gcc-major-version-only --program-suffix=-7
> --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
> --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
> --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
> --enable-libstdcxx-debug --enable-libstdcxx-time=yes
> --with-default-libstdcxx-abi=new --enable-gnu-unique-object
> --disable-vtable-verify --enable-libmpx --enable-plugin
> --enable-default-pie --with-system-zlib --with-target-system-zlib
> --enable-objc-gc=auto --enable-multiarch --disable-werror
> --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
> --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none
> --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu
> --host=x86_64-linux-gnu --target=x86_64-linux-gnu
> Thread model: posix
> gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
>
> COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/
>
> LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../:/lib/:/usr/lib/
> COLLECT_GCC_OPTIONS='-fuse-ld=lld' '-fsanitize=undefined' '-v' '-o'
> 'a.out' '-mtune=generic' '-march=x86-64'
>  /usr/lib/gcc/x86_64-linux-gnu/7/collect2 -plugin
> /usr/lib/gcc/x86_64-linux-gnu/7/liblto_plugin.so
> -plugin-opt=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
> -plugin-opt=-fresolution=/tmp/ccJfTl2s.res -plugin-opt=-pass-through=-lgcc
> -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc
> -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s
> --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed
> -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -z now -fuse-ld=lld -z
> relro -o a.out
> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/Scrt1.o
> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crti.o
> /usr/lib/gcc/x86_64-linux-gnu/7/crtbeginS.o
> -L/usr/lib/gcc/x86_64-linux-gnu/7
> -L/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu
> -L/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib -L/lib/x86_64-linux-gnu
> -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib
> -L/usr/lib/gcc/x86_64-linux-gnu/7/../../.. /tmp/test1-ffe267.o --push-state
> --no-as-needed -lubsan --pop-state -lgcc --push-state --as-needed -lgcc_s
> --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state
> /usr/lib/gcc/x86_64-linux-gnu/7/crtendS.o
> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crtn.o
> ld.lld: error: /tmp/test1-ffe267.o is incompatible with elf64-x86-64
> collect2: error: ld returned 1 exit status
> clang-11: error: linker (via gcc) command failed with exit code 1 (use -v
> to see invocation)
>
> On Mon, May 4, 2020 at 9:40 PM suyash singh <suyashsingh234 at gmail.com>
> wrote:
>
>> Also can you add -v and send the output?
>>
>>
>> clang version 11.0.0 (https://github.com/llvm/llvm-project.git
>> 05606329e2353e37492bcf567ab4a4b27bceb65c)
>> Target: sparc
>> Thread model: posix
>> InstalledDir: /home/suyash/Desktop/clanganalyzer/llvm-project/build2/bin
>>  "/home/suyash/Desktop/clanganalyzer/llvm-project/build2/bin/clang-11"
>> -cc1 -triple sparc -emit-obj -mrelax-all -disable-free -main-file-name
>> test1.c -mrelocation-model static -mthread-model posix -mframe-pointer=all
>> -fmath-errno -fno-rounding-math -mconstructor-aliases -mfloat-abi hard
>> -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -v
>> -resource-dir
>> /home/suyash/Desktop/clanganalyzer/llvm-project/build2/lib/clang/11.0.0
>> -fdebug-compilation-dir /home/suyash/Desktop/clangtest -ferror-limit 19
>> -fmessage-length 0
>> -fsanitize=alignment,array-bounds,bool,builtin,enum,float-cast-overflow,integer-divide-by-zero,nonnull-attribute,null,pointer-overflow,return,returns-nonnull-attribute,shift-base,shift-exponent,signed-integer-overflow,unreachable,vla-bound
>> -fsanitize-recover=alignment,array-bounds,bool,builtin,enum,float-cast-overflow,integer-divide-by-zero,nonnull-attribute,null,pointer-overflow,returns-nonnull-attribute,shift-base,shift-exponent,signed-integer-overflow,vla-bound
>> -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fdiagnostics-show-option
>> -fcolor-diagnostics -faddrsig -o /tmp/test1-6da71f.o -x c test1.c
>> clang -cc1 version 11.0.0 based upon LLVM 11.0.0git default target
>> x86_64-unknown-linux-gnu
>> #include "..." search starts here:
>> #include <...> search starts here:
>>  /usr/local/include
>>
>>  /home/suyash/Desktop/clanganalyzer/llvm-project/build2/lib/clang/11.0.0/include
>>  /usr/include
>> End of search list.
>>  "/usr/bin/gcc" -fuse-ld=lld -fsanitize=undefined -v -o a.out
>> /tmp/test1-6da71f.o
>> Using built-in specs.
>> COLLECT_GCC=/usr/bin/gcc
>> COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
>> OFFLOAD_TARGET_NAMES=nvptx-none
>> OFFLOAD_TARGET_DEFAULT=1
>> Target: x86_64-linux-gnu
>> Configured with: ../src/configure -v --with-pkgversion='Ubuntu
>> 7.5.0-3ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
>> --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
>> --with-gcc-major-version-only --program-suffix=-7
>> --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
>> --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
>> --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
>> --enable-libstdcxx-debug --enable-libstdcxx-time=yes
>> --with-default-libstdcxx-abi=new --enable-gnu-unique-object
>> --disable-vtable-verify --enable-libmpx --enable-plugin
>> --enable-default-pie --with-system-zlib --with-target-system-zlib
>> --enable-objc-gc=auto --enable-multiarch --disable-werror
>> --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
>> --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none
>> --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu
>> --host=x86_64-linux-gnu --target=x86_64-linux-gnu
>> Thread model: posix
>> gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)
>>
>> COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/
>>
>> LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/7/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/7/../../../:/lib/:/usr/lib/
>> COLLECT_GCC_OPTIONS='-fuse-ld=lld' '-fsanitize=undefined' '-v' '-o'
>> 'a.out' '-mtune=generic' '-march=x86-64'
>>  /usr/lib/gcc/x86_64-linux-gnu/7/collect2 -plugin
>> /usr/lib/gcc/x86_64-linux-gnu/7/liblto_plugin.so
>> -plugin-opt=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
>> -plugin-opt=-fresolution=/tmp/ccrvaAg0.res -plugin-opt=-pass-through=-lgcc
>> -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc
>> -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s
>> --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed
>> -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -z now -fuse-ld=lld -z
>> relro -o a.out
>> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/Scrt1.o
>> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crti.o
>> /usr/lib/gcc/x86_64-linux-gnu/7/crtbeginS.o
>> -L/usr/lib/gcc/x86_64-linux-gnu/7
>> -L/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu
>> -L/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib -L/lib/x86_64-linux-gnu
>> -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib
>> -L/usr/lib/gcc/x86_64-linux-gnu/7/../../.. /tmp/test1-6da71f.o --push-state
>> --no-as-needed -lubsan --pop-state -lgcc --push-state --as-needed -lgcc_s
>> --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state
>> /usr/lib/gcc/x86_64-linux-gnu/7/crtendS.o
>> /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crtn.o
>> ld.lld: error: /tmp/test1-6da71f.o is incompatible with elf64-x86-64
>> collect2: error: ld returned 1 exit status
>> clang-11: error: linker (via gcc) command failed with exit code 1 (use -v
>> to see invocation)
>>
>> On Mon, May 4, 2020 at 6:26 PM Hesham Almatary <
>> hesham.almatary at cl.cam.ac.uk> wrote:
>>
>>> Have you seen that?
>>>
>>> https://stackoverflow.com/questions/19118854/unable-to-cross-compile-to-sparc-using-clang
>>>
>>> I’m not sure sparc backend is well supported by clang/llvm. Try with
>>> riscv.
>>>
>>> On Mon, 4 May 2020 at 13:34, Hesham Almatary <
>>> hesham.almatary at cl.cam.ac.uk> wrote:
>>>
>>>>
>>>>
>>>> On Mon, 4 May 2020 at 13:19, Joel Sherrill <joel at rtems.org> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Mon, May 4, 2020, 7:16 AM suyash singh <suyashsingh234 at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> I am trying to cross compile with clang and run Undefined Behavior
>>>>>> Sanitizer for .c file
>>>>>>
>>>>>> *Command I am running*
>>>>>>
>>>>>> clang -target sparc -integrated-as -fuse-ld=lld -fsanitize=undefined test1.c
>>>>>>
>>>>>> clang is the cross compiler
>>>>>>
>>>>>> sparc is the target architecture.
>>>>>>
>>>>>> -integrated-as to use the llvm assembler
>>>>>>
>>>>>> -fuse-ld=lld to use lld linker
>>>>>>
>>>>>> -fsanitize=undefined to run UBSan
>>>>>>
>>>>>> *Error*
>>>>>>
>>>>>> ld.lld: error: /tmp/test1-43c7c0.o is incompatible with elf64-x86-64
>>>>>>
>>>>>> collect2: error: ld returned 1 exit status
>>>>>>
>>>>>> clang-11: error: linker (via gcc) command failed with exit code 1
>>>>>> (use -v to see invocation)
>>>>>>
>>>>>> *My system*
>>>>>>
>>>>>> Ubuntu 18.04
>>>>>>
>>>>>> x86_64
>>>>>>
>>>>>> command executed on ubuntu terminal
>>>>>>
>>>>>> without -target sparc on a file.c which does not contain sparc
>>>>>> assembly the clang works fine
>>>>>>
>>>>>
>>>>> This is the same problem you had with as. You need to properly specify
>>>>> the target and have the target as and ld in your PATH.
>>>>>
>>>>
>>>> Also can you add -v and send the output?
>>>>
>>>>>
>>>>> --joel
>>>>>
>>>>>> _______________________________________________
>>>>>> devel mailing list
>>>>>> devel at rtems.org
>>>>>> http://lists.rtems.org/mailman/listinfo/devel
>>>>>
>>>>> _______________________________________________
>>>>> devel mailing list
>>>>> devel at rtems.org
>>>>> http://lists.rtems.org/mailman/listinfo/devel
>>>>
>>>> _______________________________________________
>>> devel mailing list
>>> devel at rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>>
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