[LLVMdev] [cfe-dev] use of undeclared identifier '__NR_*' error while building clang

[Alexey Samsonov]

Hi!


On Mon, Jun 9, 2014 at 6:16 PM, Sandeep K Chaudhary <
babbusandy2006 at gmail.com> wrote:

> Hi Alexey !
>
> Thanks for the reply !
>
> Below is the output of 'uname -a'
>
> sandeep at ubuntu:/usr/include$ uname -a
> Linux ubuntu 3.13.0-29-generic #53-Ubuntu SMP Wed Jun 4 21:00:20 UTC 2014
> x86_64 x86_64 x86_64 GNU/Linux
>
> I recently upgraded my Linux version (to Ubuntu 14.04). Could the issue be
> because of that?
>
> So to drop compiler-rt, I can just delete the whole directory and do an
> incremental build? The reason I'm asking this is - it takes more than a
> couple of hours for the build on my system. It would be great if I can
> avoid it. Please let me know.
>

No, I think you would need to re-configure your build after deleting
compiler-rt.


>
> Thanks and regards,
> Sandeep.
>
>
> On Mon, Jun 9, 2014 at 8:38 PM, Alexey Samsonov <vonosmas at gmail.com>
> wrote:
>
>> Hi,
>>
>> Can you provide details about your system (uname -a)? It is weird that
>> you don't have __NR_open defined in your system headers.
>> As a workaround, you may drop compiler-rt repository from your checkout,
>> it's possible to build Clang without it.
>>
>> On Mon, Jun 9, 2014 at 5:08 PM, Sandeep K Chaudhary <
>> babbusandy2006 at gmail.com> wrote:
>>
>>> Hi guys,
>>>
>>> I am following this[1] tutorial to install clang. However, I have made a
>>> small change in the configure command, and I am running it with
>>> '--enable-optimized' option to avoid the debug build.
>>>
>>> I am getting the errors (given at the end) related to *undeclared
>>> identifiers '__NR_*'*. Can someone please provide some input about how
>>> to tackle this issue?
>>>
>>> On my other machine, I followed the same guide[1] (without the
>>> --enable-optimized option), and everything built successfully.
>>>
>>> [1] http://clang.llvm.org/get_started.html
>>>
>>> ====================
>>> warning: clang_darwin.mk: dropping arch 'x86_64h' from lib 'ubsan_osx'
>>> (ld does not support it)
>>>  make[5]: Entering directory
>>> `/home/sandeep/llvm_clang/llvm/projects/compiler-rt'
>>>   COMPILE:   clang_linux/san-i386/i386:
>>> /home/sandeep/llvm_clang/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
>>> /home/sandeep/llvm_clang/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc:123:27:
>>> error: use of undeclared identifier '__NR_open'
>>>   return internal_syscall(SYSCALL(open), (uptr)filename, flags);
>>>                           ^
>>> /home/sandeep/llvm_clang/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc:17:24:
>>> note: expanded from macro 'SYSCALL'
>>> # define SYSCALL(name) __NR_ ## name
>>>                        ^
>>> <scratch space>:62:1: note: expanded from here
>>> __NR_open
>>> ^
>>> /home/sandeep/llvm_clang/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc:132:27:
>>> error: use of undeclared identifier '__NR_open'
>>>   return internal_syscall(SYSCALL(open), (uptr)filename, flags, mode);
>>>                           ^
>>> --------------
>>>
>>> /home/sandeep/llvm_clang/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc:516:27:
>>> error: use of undeclared identifier '__NR_fork'
>>>   return internal_syscall(SYSCALL(fork));
>>>                           ^
>>> /home/sandeep/llvm_clang/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc:17:24:
>>> note: expanded from macro 'SYSCALL'
>>> # define SYSCALL(name) __NR_ ## name
>>>                        ^
>>> <scratch space>:62:1: note: expanded from here
>>> __NR_fork
>>> ^
>>> 12 errors generated.
>>> make[5]: ***
>>> [/home/sandeep/llvm_clang/build/tools/clang/runtime/compiler-rt/clang_linux/san-i386/i386/SubDir.lib__sanitizer_common/sanitizer_linux.o]
>>> Error 1
>>> make[5]: Leaving directory
>>> `/home/sandeep/llvm_clang/llvm/projects/compiler-rt'
>>> make[4]: *** [BuildRuntimeLibraries] Error 2
>>> make[4]: Leaving directory
>>> `/home/sandeep/llvm_clang/build/tools/clang/runtime/compiler-rt'
>>> make[3]: *** [compiler-rt/.makeall] Error 2
>>> make[3]: Leaving directory
>>> `/home/sandeep/llvm_clang/build/tools/clang/runtime'
>>> make[2]: *** [all] Error 1
>>> make[2]: Leaving directory `/home/sandeep/llvm_clang/build/tools/clang'
>>> make[1]: *** [clang/.makeall] Error 2
>>> make[1]: Leaving directory `/home/sandeep/llvm_clang/build/tools'
>>> make: *** [all] Error 1
>>>
>>> Thanks and regards,
>>> Sandeep.
>>>
>>>
>>> _______________________________________________
>>> cfe-dev mailing list
>>> cfe-dev at cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>>>
>>>
>>
>>
>> --
>> Alexey Samsonov
>> vonosmas at gmail.com
>>
>
>
>
> --
> Thanks and regards,
> Sandeep K Chaudhary.
>



-- 
Alexey Samsonov
vonosmas at gmail.com
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