[cfe-dev] make error compiling libc++

[Dimitry Andric]

This was caused by r185229, which also broke a number of other buildbots.  Timur Iskhodzhanov reverted it here: http://llvm.org/viewvc/llvm-project?rev=185256&view=rev

So please update your sources, and try building again.

-Dimitry

On Jun 29, 2013, at 15:19, Silmarieni <silmarieni at yahoo.com> wrote:

> Hello,
> 
> I'm trying to compile libc++ as indicated in 'Build on Linux using CMake and libsupc++ (http://libcxx.llvm.org) and I get the errors below when using make.
> This is on a suse 12 maching with self compiled clang 3.4.
> Any ideas how to fix the problem?
> 
> Thanks!
> 
> linux-od30:~/llvmsrc/buildlibcxx # make
> Scanning dependencies of target abilib_headers
> [  3%] Generating include/cxxabi.h
> [  6%] Generating include/bits/c++config.h
> [ 10%] Generating include/bits/os_defines.h
> [ 13%] Generating include/bits/cpu_defines.h
> [ 16%] Generating include/bits/cxxabi_tweaks.h
> [ 20%] Generating include/bits/cxxabi_forced.h
> [ 20%] Built target abilib_headers
> Scanning dependencies of target cxx
> [ 23%] Building CXX object lib/CMakeFiles/cxx.dir/__/src/strstream.cpp.o
> [ 26%] Building CXX object lib/CMakeFiles/cxx.dir/__/src/algorithm.cpp.o
> In file included from /root/llvmsrc/libcxx/src/algorithm.cpp:11:
> In file included from /root/llvmsrc/libcxx/include/random:1647:
> /root/llvmsrc/libcxx/include/cmath:401:1: error: declaration of 'isinf' in global
>       scope conflicts with declaration with C language linkage
> isinf(_A1 __x) _NOEXCEPT
> ^
> /usr/include/bits/mathcalls.h:202:19: note: declared with C language linkage here
> __MATHDECL_1 (int,isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
>                   ^
> /usr/include/math.h:64:31: note: expanded from macro '__MATHDECL_1'
>   extern type __MATH_PRECNAME(function,suffix) args __THROW
>                               ^
> /usr/include/math.h:67:42: note: expanded from macro '__MATH_PRECNAME'
> #define __MATH_PRECNAME(name,r) __CONCAT(name,r)
>                                          ^
> /usr/include/sys/cdefs.h:89:23: note: expanded from macro '__CONCAT'
> #define __CONCAT(x,y)   x ## y
>                         ^
> In file included from /root/llvmsrc/libcxx/src/algorithm.cpp:11:
> In file included from /root/llvmsrc/libcxx/include/random:1647:
> /root/llvmsrc/libcxx/include/cmath:425:1: error: declaration of 'isnan' in global
>       scope conflicts with declaration with C language linkage
> isnan(_A1 __x) _NOEXCEPT
> ^
> /usr/include/bits/mathcalls.h:235:19: note: declared with C language linkage here
> __MATHDECL_1 (int,isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
>                   ^
> /usr/include/math.h:64:31: note: expanded from macro '__MATHDECL_1'
>   extern type __MATH_PRECNAME(function,suffix) args __THROW
>                               ^
> /usr/include/math.h:67:42: note: expanded from macro '__MATH_PRECNAME'
> #define __MATH_PRECNAME(name,r) __CONCAT(name,r)
>                                          ^
> /usr/include/sys/cdefs.h:89:23: note: expanded from macro '__CONCAT'
> #define __CONCAT(x,y)   x ## y
>                         ^
> 2 errors generated.
> make[2]: *** [lib/CMakeFiles/cxx.dir/__/src/algorithm.cpp.o] Error 1
> make[1]: *** [lib/CMakeFiles/cxx.dir/all] Error 2
> make: *** [all] Error 2
>  
>                                                                                       
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