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

[Sandeep K Chaudhary]

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.

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.
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