[lldb-dev] How to compile lldb?

[Siva Chandra]

On Fri, Nov 21, 2014 at 1:01 AM, Arne Schmitz <arne.schmitz at aixigo.de> wrote:
> Hi everybody,
>
> I am still trying to build lldb on Debian Stable. I configured cmake like
> this:
>
> cmake -DCMAKE_BUILD_TYPE="Release"
> -DCMAKE_C_COMPILER=/export/source/clang/bin/clang
> -DCMAKE_CXX_COMPILER=/export/source/clang/bin/clang++
> -DCMAKE_INSTALL_PREFIX=/export/source/clang ..
>
> However, I think that the build tries to use my c++ stdlib provided by the
> system gcc 4.7, and that this is the cause of the error:
>
> [ 91%] Building CXX object
> tools/lldb/source/Plugins/Process/Linux/CMakeFiles/lldbPluginProcessLinux.dir/ThreadStateCoordinator.cpp.o
> In file included from
> /export/source/git/llvm/tools/lldb/source/Plugins/Process/Linux/ThreadStateCoordinator.cpp:17:
> In file included from
> /export/source/git/llvm/tools/lldb/source/Plugins/Process/Linux/ThreadStateCoordinator.h:13:
> In file included from
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/condition_variable:38:
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/chrono:540:6:
> error: no matching constructor for initialization of 'duration' (aka
>       'std::chrono::duration<long, std::ratio<1, 1000000> >')
>           : __d(__t.time_since_epoch())
>             ^   ~~~~~~~~~~~~~~~~~~~~~~
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/condition_variable:111:42:
> note: in instantiation of function template specialization
>       'std::chrono::time_point<std::chrono::system_clock,
> std::chrono::duration<long, std::ratio<1, 1000000> >
>       >::time_point<std::chrono::duration<long, std::ratio<1, 1000000000> >
>>' requested here
>         const __clock_t::time_point __s_atime = __s_entry + __delta;
>                                                 ^
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/chrono:234:12:
> note: candidate constructor not viable: no known conversion from
>       'duration<[...], ratio<[...], 1000000000>>' to 'const duration<[...],
> ratio<[...], 1000000>>' for 1st argument
>         constexpr duration(const duration&) = default;
>                   ^
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/chrono:237:19:
> note: candidate template ignored: disabled by 'enable_if' [with _Rep2 =
>       std::chrono::duration<long, std::ratio<1, 1000000000> >]
>                enable_if<is_convertible<_Rep2, rep>::value
>                          ^
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/chrono:244:19:
> note: candidate template ignored: disabled by 'enable_if' [with _Rep2 =
>       long, _Period2 = std::ratio<1, 1000000000>]
> enable_if<treat_as_floating_point<rep>::value
>                          ^
> /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/chrono:232:12:
> note: candidate constructor not viable: requires 0 arguments, but 1 was
>       provided
>         constexpr duration() : __r() { }
>                   ^
> 1 error generated.
> make[2]: ***
> [tools/lldb/source/Plugins/Process/Linux/CMakeFiles/lldbPluginProcessLinux.dir/ThreadStateCoordinator.cpp.o]
> Error 1
> make[1]: ***
> [tools/lldb/source/Plugins/Process/Linux/CMakeFiles/lldbPluginProcessLinux.dir/all]
> Error 2
> make: *** [all] Error 2
>
> I also compiled and installed libcxx, so maybe I should switch to that? How
> do I do that?

I have never tried this, but may be add -DCMAKE_CXX_FLAGS=-stdlib=libstdc++?