获取 Chrono C++库（Boost::sandbox）可以工作

发布于 2024-10-06 21:29:42 字数 850 浏览 5 评论 0原文

我想从 Boost 沙箱尝试 Chrono 。它似乎支持很多东西并且应该稳定。

我的系统上安装了 Boost 1.44 版本（包括所需的 boost_system lib）并采用了沙箱版本（下载版本较旧，并且缺少例如ratio.hpp 文件）。

但它没有编译。尝试编译文档中的简单示例，并链接 boost_system （在 scons 中使用 LIBS=['boost_system']），每次都会发生以下错误：

obj/main.o: In function `main':
/home/***/src/main.cpp:34: undefined reference to `boost::chrono::system_clock::now()'
scons: building terminated because of errors.

这似乎是链接器错误。我做错了什么？我在 1.44 版本中链接了 boost_system（通过 scons），并且已经尝试与旧版本 1.40 进行相同的操作。

有什么建议吗？您是如何设置 chrono 的使用的？

谢谢。

sascha

编辑： 此帖子，这是在谈论兼容性问题，让我认为沙盒版本的 Chrono 应该能够与 boost 1.44 一起工作。

原文

i wanted to try out Chrono from the Boost sandbox. It seems to support a lot of stuff and should be stable.

I have Boost in version 1.44 installed on my system (incl. boost_system lib which is needed) and took the sandbox version (the download-version is older and misses for example the ratio.hpp file).

But it isn't compiling. Trying to compile the simple example from the documentation, with linking boost_system (in scons with LIBS=['boost_system']), the following error is occurring every time:

obj/main.o: In function `main':
/home/***/src/main.cpp:34: undefined reference to `boost::chrono::system_clock::now()'
scons: building terminated because of errors.

That seems to be a linker error. What did i do wrong? I have boost_system in version 1.44 linked (trough scons) and already tried the same with the older version 1.40.

Any tips? How did you setup your use of chrono?

Thanks.

sascha

Edit: This thread, which is talking about compatibility issues, let me think that the sandbox version of Chrono should be able to work with boost 1.44.

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泪冰清 2024-10-13 21:29:42

如安装 Chrono 文档，您需要构建并链接 Chrono 库，或者定义 BOOST_CHRONO_INLINED。

我在从 trunk checkout 构建 Chrono 时遇到了问题，但这可能与 Chrono 文档中提到的 type_traits 不兼容有关。

我能够使用以下 SConstruct 构建示例程序（修复命名空间错误后）：

env = Environment(
    CPPDEFINES = ['BOOST_CHRONO_INLINED'],
    CPPPATH = ['/.../boost_1_44_0', ],
    LIBPATH = ['/.../boost_1_44_0/stage/lib', ],
    LIBS = ['boost_system'],
)

env.Program('chrono-test', 'main.cpp')

As described in the Installing Chrono documentation, you either need to build and link the Chrono library, or define BOOST_CHRONO_INLINED.

I had problems building Chrono from the trunk checkout, but it's probably related to the type_traits incompatibility mentioned in the Chrono docs.

I was able to build the example program with the following SConstruct (after fixing namespace errors):

env = Environment(
    CPPDEFINES = ['BOOST_CHRONO_INLINED'],
    CPPPATH = ['/.../boost_1_44_0', ],
    LIBPATH = ['/.../boost_1_44_0/stage/lib', ],
    LIBS = ['boost_system'],
)

env.Program('chrono-test', 'main.cpp')

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