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

suyash singh suyashsingh234 at gmail.com
Mon May 4 16:10:10 UTC 2020 

>
> 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
>>
>> _______________________________________________
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