Re: [Boost-users] How to compile boost with non-standard clang installations.

Subject: Re: [Boost-users] How to compile boost with non-standard clang installations.
From: Bill White (bill.white_at_[hidden])
Date: 2014-02-11 13:49:20

Please ignore my message.  I think figured it out.  The problem went away
when I didn't specify -std=c++11.

Sorry for the spam.

On Mon, Feb 10, 2014 at 6:29 PM, Bill White <bill.white_at_[hidden]> wrote:
> I am trying to build boost using clang.  I know there are many sources of
> advice for doing this, but I can't seem to find a description of my exact
> system, and my attempts to adapt them have not been notably successful.
>
> Here are my configuration constraints:
> 1.) Clang is not the system compiler.  It is compiled in installed in
> separately,
>     with prefix $a/clang.  So, $a/clang/bin/clang++ is the C++
> compiler, and so forth.
>     I am using the tip of the llvm/clang tree.
> 2.) I want to use libc++, which is installed in
> $a/clang/lib/libc++.so.  I also want
>     to use the libc++ abi, which is installed in $a/clang/lib/libcxxabi.so.
> 3.) The libc++ standard library include files are installed in
> $a/include/c++/v1.
>
> For most programs I compile with the options
>   -nostdinc++ -isystem $a/clang/include/c++/v1 -std=c++11
> and link with
>   -stdlib=libc++ -L$a/clang/lib -lcxxabi
>
> This seems to work pretty well for most circumstances.  However, I
> can't figure out
> how to translate this to boost 1.55.0.  I tried:
>   ./bootstrap.sh --with-toolset=clang --prefix=$a/clang
>   ./b2 toolset=clang \
>         cxxflags="-std=c++11 -nostdinc++ -isystem
> $a/clang/include/c++/v1 -stdlib=libc++"  \
>         linkflags="-stdlib=c++ -L$a/clang/lib" \
>         --prefix=$a/clang -j10 define=BOOST_SYSTEM_NO_DEPRECATED stage release
>
> However, the compilations failed.  They all seemed to fail compiling
> type_traits.  A typical
> failure is:
>
> clang-linux.compile.c++.without-pth
> bin.v2/libs/regex/build/clang-linux-3.0/release/threading-multi/icu.o
> In file included from libs/regex/build/../src/icu.cpp:20:
> In file included from ./boost/regex/config.hpp:43:
> In file included from ./boost/config.hpp:40:
> In file included from ./boost/config/select_stdlib_config.hpp:37:
> In file included from ./boost/config/no_tr1/utility.hpp:21:
> In file included from
> /local/billw/arch/glnxa64/clang/include/c++/v1/utility:157:
> In file included from /local/billw/arch/glnxa64/clang/include/c++/v1/__tuple:16:
> /local/billw/arch/glnxa64/clang/include/c++/v1/type_traits:3308:31:
> error: expected expression
>     static const bool value = decltype(__test<_Tp>(nullptr))::value;
>                               ^
> 1 error generated.
>
>   "clang++" -c -x c++ -std=c++11 -nostdinc++ -isystem
> /local/billw/arch/glnxa64/clang/include/c++/v1 -O3 -finline-functions
> -Wno-inline -Wall -pedantic -pthread -fPIC -std=c++11 -nostdinc++
> -isystem /local/billw/arch/glnxa64/clang/include/c++/v1
> -DBOOST_ALL_NO_LIB=1 -DBOOST_REGEX_DYN_LINK=1
> -DBOOST_SYSTEM_NO_DEPRECATED -DNDEBUG -I"." -o
> "bin.v2/libs/regex/build/clang-linux-3.0/release/threading-multi/icu.o"
> "libs/regex/build/../src/icu.cpp"
>
> ...failed clang-linux.compile.c++.without-pth
> bin.v2/libs/regex/build/clang-linux-3.0/release/threading-multi/icu.o...
>
> (Here $a is /local/billw/arch/glnxa64.)
>
> I apologize for the length of this, but I didn't know what to leave out.
>
> Thanks in advance.