[cfe-dev] Building libc++ with libsupc++ puts "bits/" headers in the wrong spot(?)

[Eric Fiselier]

Hi Jim,

Thanks for the report. There is a bug report for this already. I'll make it
higher priority.

http://llvm.org/bugs/show_bug.cgi?id=20936

/Eric

On Fri, Sep 19, 2014 at 3:34 PM, Jim Porter <jvp4846 at g.rit.edu> wrote:

> I tried building libc++ with libsupc++ as described in the documentation*,
> and while most of the stuff works, I can't #include <cxxabi.h>. It's
> possible I'm just doing something dumb, but it looks like libc++ is copying
> over some files from libsupc++ and putting them in the include directory
> along with the rest of libc++, instead of in a "bits/" subdirectory like
> cxxabi.h assumes (namely bits/c++config.h, bits/cxxabi_tweaks.h, and
> bits/cxxabi_forced.h).
>
> Is this a bug in libc++? I can't really tell what CMakeLists.txt is doing,
> since I'm not an expert on CMake, but it seems like it's copying the files
> and not making appropriate subdirectories for them. Of course, if I'm just
> doing this wrong, let me know so I can fix it on my end. :)
>
> - Jim
>
> * Here's the command I used to build:
>
> CC=clang CXX=clang++ cmake -G "Unix Makefiles" -DLIBCXX_CXX_ABI=libsupc++
> -DLIBCXX_LIBSUPCXX_INCLUDE_PATHS="/usr/include/c++/4.8/;/
> usr/include/x86_64-linux-gnu/c++/4.8/" -DCMAKE_BUILD_TYPE=Release
> -DCMAKE_INSTALL_PREFIX=$INSTALL_DIR $SRC_DIR
>
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